/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-lit/gj2007.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-e106359-m [2022-04-15 06:12:58,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-15 06:12:58,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-15 06:12:58,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-15 06:12:58,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-15 06:12:58,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-15 06:12:58,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-15 06:12:58,699 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-15 06:12:58,709 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-15 06:12:58,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-15 06:12:58,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-15 06:12:58,710 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-15 06:12:58,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-15 06:12:58,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-15 06:12:58,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-15 06:12:58,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-15 06:12:58,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-15 06:12:58,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-15 06:12:58,727 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-15 06:12:58,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-15 06:12:58,728 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-15 06:12:58,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-15 06:12:58,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-15 06:12:58,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-15 06:12:58,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-15 06:12:58,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-15 06:12:58,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 06:12:58,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-15 06:12:58,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-15 06:12:58,729 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-15 06:12:58,729 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-15 06:12:58,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-15 06:12:58,729 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-15 06:12:58,729 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-15 06:12:59,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-15 06:12:59,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-15 06:12:59,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-15 06:12:59,164 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-15 06:12:59,165 INFO L275 PluginConnector]: CDTParser initialized [2022-04-15 06:12:59,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007.i [2022-04-15 06:12:59,262 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82d4461c0/3934970f4f64442aa46db7e6507d7c87/FLAG36d493c14 [2022-04-15 06:12:59,888 INFO L306 CDTParser]: Found 1 translation units. [2022-04-15 06:12:59,888 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.i [2022-04-15 06:12:59,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82d4461c0/3934970f4f64442aa46db7e6507d7c87/FLAG36d493c14 [2022-04-15 06:12:59,909 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82d4461c0/3934970f4f64442aa46db7e6507d7c87 [2022-04-15 06:12:59,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-15 06:12:59,913 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-15 06:12:59,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-15 06:12:59,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-15 06:12:59,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-15 06:12:59,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 06:12:59" (1/1) ... [2022-04-15 06:12:59,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fc84b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 06:12:59, skipping insertion in model container [2022-04-15 06:12:59,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 06:12:59" (1/1) ... [2022-04-15 06:12:59,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-15 06:12:59,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-15 06:13:00,121 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.i[895,908] [2022-04-15 06:13:00,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 06:13:00,136 INFO L203 MainTranslator]: Completed pre-run [2022-04-15 06:13:00,149 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.i[895,908] [2022-04-15 06:13:00,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 06:13:00,162 INFO L208 MainTranslator]: Completed translation [2022-04-15 06:13:00,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 06:13:00 WrapperNode [2022-04-15 06:13:00,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-15 06:13:00,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-15 06:13:00,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-15 06:13:00,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-15 06:13:00,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 06:13:00" (1/1) ... [2022-04-15 06:13:00,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 06:13:00" (1/1) ... [2022-04-15 06:13:00,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 06:13:00" (1/1) ... [2022-04-15 06:13:00,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 06:13:00" (1/1) ... [2022-04-15 06:13:00,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 06:13:00" (1/1) ... [2022-04-15 06:13:00,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 06:13:00" (1/1) ... [2022-04-15 06:13:00,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 06:13:00" (1/1) ... [2022-04-15 06:13:00,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-15 06:13:00,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-15 06:13:00,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-15 06:13:00,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-15 06:13:00,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 06:13:00" (1/1) ... [2022-04-15 06:13:00,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 06:13:00,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:13:00,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-15 06:13:00,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-15 06:13:00,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-15 06:13:00,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-15 06:13:00,270 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-15 06:13:00,270 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-15 06:13:00,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-15 06:13:00,270 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-15 06:13:00,271 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-15 06:13:00,271 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-15 06:13:00,271 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-15 06:13:00,272 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-15 06:13:00,272 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-15 06:13:00,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-15 06:13:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-15 06:13:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-15 06:13:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-15 06:13:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-15 06:13:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-15 06:13:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-15 06:13:00,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-15 06:13:00,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-15 06:13:00,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-15 06:13:00,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-15 06:13:00,332 INFO L234 CfgBuilder]: Building ICFG [2022-04-15 06:13:00,333 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-15 06:13:00,446 INFO L275 CfgBuilder]: Performing block encoding [2022-04-15 06:13:00,451 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-15 06:13:00,452 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-15 06:13:00,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 06:13:00 BoogieIcfgContainer [2022-04-15 06:13:00,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-15 06:13:00,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-15 06:13:00,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-15 06:13:00,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-15 06:13:00,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.04 06:12:59" (1/3) ... [2022-04-15 06:13:00,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba23570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 06:13:00, skipping insertion in model container [2022-04-15 06:13:00,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 06:13:00" (2/3) ... [2022-04-15 06:13:00,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba23570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 06:13:00, skipping insertion in model container [2022-04-15 06:13:00,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 06:13:00" (3/3) ... [2022-04-15 06:13:00,469 INFO L111 eAbstractionObserver]: Analyzing ICFG gj2007.i [2022-04-15 06:13:00,473 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-15 06:13:00,474 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-15 06:13:00,552 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-15 06:13:00,560 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-15 06:13:00,561 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-15 06:13:00,581 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-15 06:13:00,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-15 06:13:00,586 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:13:00,586 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:13:00,587 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:13:00,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:13:00,595 INFO L85 PathProgramCache]: Analyzing trace with hash -242008288, now seen corresponding path program 1 times [2022-04-15 06:13:00,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:13:00,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1276093391] [2022-04-15 06:13:00,613 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 06:13:00,613 INFO L85 PathProgramCache]: Analyzing trace with hash -242008288, now seen corresponding path program 2 times [2022-04-15 06:13:00,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:13:00,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713006474] [2022-04-15 06:13:00,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:13:00,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:13:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:00,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:13:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:00,809 INFO L290 TraceCheckUtils]: 0: Hoare triple {28#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {23#true} is VALID [2022-04-15 06:13:00,809 INFO L290 TraceCheckUtils]: 1: Hoare triple {23#true} assume true; {23#true} is VALID [2022-04-15 06:13:00,810 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {23#true} {23#true} #56#return; {23#true} is VALID [2022-04-15 06:13:00,814 INFO L272 TraceCheckUtils]: 0: Hoare triple {23#true} call ULTIMATE.init(); {28#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:13:00,815 INFO L290 TraceCheckUtils]: 1: Hoare triple {28#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {23#true} is VALID [2022-04-15 06:13:00,815 INFO L290 TraceCheckUtils]: 2: Hoare triple {23#true} assume true; {23#true} is VALID [2022-04-15 06:13:00,815 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {23#true} {23#true} #56#return; {23#true} is VALID [2022-04-15 06:13:00,815 INFO L272 TraceCheckUtils]: 4: Hoare triple {23#true} call #t~ret1 := main(); {23#true} is VALID [2022-04-15 06:13:00,815 INFO L290 TraceCheckUtils]: 5: Hoare triple {23#true} ~x~0 := 0;~y~0 := 50; {23#true} is VALID [2022-04-15 06:13:00,817 INFO L290 TraceCheckUtils]: 6: Hoare triple {23#true} assume !true; {24#false} is VALID [2022-04-15 06:13:00,817 INFO L272 TraceCheckUtils]: 7: Hoare triple {24#false} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {24#false} is VALID [2022-04-15 06:13:00,817 INFO L290 TraceCheckUtils]: 8: Hoare triple {24#false} ~cond := #in~cond; {24#false} is VALID [2022-04-15 06:13:00,817 INFO L290 TraceCheckUtils]: 9: Hoare triple {24#false} assume 0 == ~cond; {24#false} is VALID [2022-04-15 06:13:00,818 INFO L290 TraceCheckUtils]: 10: Hoare triple {24#false} assume !false; {24#false} is VALID [2022-04-15 06:13:00,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:00,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:13:00,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713006474] [2022-04-15 06:13:00,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713006474] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:13:00,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:13:00,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-15 06:13:00,823 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:13:00,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1276093391] [2022-04-15 06:13:00,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1276093391] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:13:00,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:13:00,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-15 06:13:00,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592552720] [2022-04-15 06:13:00,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:13:00,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-15 06:13:00,831 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:13:00,834 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:00,860 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:00,861 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-15 06:13:00,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:13:00,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-15 06:13:00,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-15 06:13:00,885 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:00,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:00,966 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2022-04-15 06:13:00,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-15 06:13:00,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-15 06:13:00,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:13:00,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:00,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 36 transitions. [2022-04-15 06:13:00,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:00,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 36 transitions. [2022-04-15 06:13:00,986 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 36 transitions. [2022-04-15 06:13:01,036 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:01,043 INFO L225 Difference]: With dead ends: 32 [2022-04-15 06:13:01,043 INFO L226 Difference]: Without dead ends: 13 [2022-04-15 06:13:01,045 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-15 06:13:01,048 INFO L913 BasicCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 06:13:01,049 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 23 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 06:13:01,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-04-15 06:13:01,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-04-15 06:13:01,080 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:13:01,081 INFO L82 GeneralOperation]: Start isEquivalent. First operand 13 states. Second operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:01,081 INFO L74 IsIncluded]: Start isIncluded. First operand 13 states. Second operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:01,082 INFO L87 Difference]: Start difference. First operand 13 states. Second operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:01,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:01,088 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2022-04-15 06:13:01,088 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-04-15 06:13:01,088 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:13:01,088 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:13:01,089 INFO L74 IsIncluded]: Start isIncluded. First operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 13 states. [2022-04-15 06:13:01,090 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 13 states. [2022-04-15 06:13:01,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:01,092 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2022-04-15 06:13:01,092 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-04-15 06:13:01,092 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:13:01,092 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:13:01,092 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:13:01,092 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:13:01,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:01,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-04-15 06:13:01,095 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2022-04-15 06:13:01,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:13:01,095 INFO L478 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-04-15 06:13:01,096 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:01,096 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 13 states and 14 transitions. [2022-04-15 06:13:01,111 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:01,111 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-04-15 06:13:01,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-15 06:13:01,112 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:13:01,112 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:13:01,112 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-15 06:13:01,113 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:13:01,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:13:01,113 INFO L85 PathProgramCache]: Analyzing trace with hash -251243498, now seen corresponding path program 1 times [2022-04-15 06:13:01,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:13:01,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [758282112] [2022-04-15 06:13:01,114 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 06:13:01,114 INFO L85 PathProgramCache]: Analyzing trace with hash -251243498, now seen corresponding path program 2 times [2022-04-15 06:13:01,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:13:01,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55554828] [2022-04-15 06:13:01,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:13:01,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:13:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:01,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:13:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:01,157 INFO L290 TraceCheckUtils]: 0: Hoare triple {153#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {147#true} is VALID [2022-04-15 06:13:01,158 INFO L290 TraceCheckUtils]: 1: Hoare triple {147#true} assume true; {147#true} is VALID [2022-04-15 06:13:01,158 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {147#true} {147#true} #56#return; {147#true} is VALID [2022-04-15 06:13:01,159 INFO L272 TraceCheckUtils]: 0: Hoare triple {147#true} call ULTIMATE.init(); {153#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:13:01,159 INFO L290 TraceCheckUtils]: 1: Hoare triple {153#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {147#true} is VALID [2022-04-15 06:13:01,159 INFO L290 TraceCheckUtils]: 2: Hoare triple {147#true} assume true; {147#true} is VALID [2022-04-15 06:13:01,159 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {147#true} {147#true} #56#return; {147#true} is VALID [2022-04-15 06:13:01,159 INFO L272 TraceCheckUtils]: 4: Hoare triple {147#true} call #t~ret1 := main(); {147#true} is VALID [2022-04-15 06:13:01,160 INFO L290 TraceCheckUtils]: 5: Hoare triple {147#true} ~x~0 := 0;~y~0 := 50; {152#(= main_~x~0 0)} is VALID [2022-04-15 06:13:01,162 INFO L290 TraceCheckUtils]: 6: Hoare triple {152#(= main_~x~0 0)} assume !(~x~0 < 100); {148#false} is VALID [2022-04-15 06:13:01,162 INFO L272 TraceCheckUtils]: 7: Hoare triple {148#false} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {148#false} is VALID [2022-04-15 06:13:01,163 INFO L290 TraceCheckUtils]: 8: Hoare triple {148#false} ~cond := #in~cond; {148#false} is VALID [2022-04-15 06:13:01,163 INFO L290 TraceCheckUtils]: 9: Hoare triple {148#false} assume 0 == ~cond; {148#false} is VALID [2022-04-15 06:13:01,163 INFO L290 TraceCheckUtils]: 10: Hoare triple {148#false} assume !false; {148#false} is VALID [2022-04-15 06:13:01,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:01,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:13:01,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55554828] [2022-04-15 06:13:01,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55554828] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:13:01,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:13:01,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-15 06:13:01,164 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:13:01,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [758282112] [2022-04-15 06:13:01,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [758282112] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:13:01,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:13:01,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-15 06:13:01,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256292503] [2022-04-15 06:13:01,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:13:01,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-15 06:13:01,166 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:13:01,166 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:01,178 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:01,179 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-15 06:13:01,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:13:01,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-15 06:13:01,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-15 06:13:01,180 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:01,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:01,279 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2022-04-15 06:13:01,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-15 06:13:01,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-15 06:13:01,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:13:01,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:01,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 26 transitions. [2022-04-15 06:13:01,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:01,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 26 transitions. [2022-04-15 06:13:01,283 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 26 transitions. [2022-04-15 06:13:01,322 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:01,324 INFO L225 Difference]: With dead ends: 22 [2022-04-15 06:13:01,324 INFO L226 Difference]: Without dead ends: 15 [2022-04-15 06:13:01,324 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-15 06:13:01,325 INFO L913 BasicCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 06:13:01,326 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 19 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 06:13:01,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-04-15 06:13:01,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-04-15 06:13:01,329 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:13:01,329 INFO L82 GeneralOperation]: Start isEquivalent. First operand 15 states. Second operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:01,329 INFO L74 IsIncluded]: Start isIncluded. First operand 15 states. Second operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:01,330 INFO L87 Difference]: Start difference. First operand 15 states. Second operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:01,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:01,331 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2022-04-15 06:13:01,331 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-04-15 06:13:01,331 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:13:01,331 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:13:01,339 INFO L74 IsIncluded]: Start isIncluded. First operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 15 states. [2022-04-15 06:13:01,339 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 15 states. [2022-04-15 06:13:01,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:01,340 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2022-04-15 06:13:01,340 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-04-15 06:13:01,341 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:13:01,341 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:13:01,341 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:13:01,341 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:13:01,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:01,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-04-15 06:13:01,342 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2022-04-15 06:13:01,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:13:01,342 INFO L478 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-04-15 06:13:01,342 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:01,343 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 15 states and 16 transitions. [2022-04-15 06:13:01,415 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:01,416 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-04-15 06:13:01,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-04-15 06:13:01,416 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:13:01,416 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:13:01,416 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-15 06:13:01,417 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:13:01,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:13:01,417 INFO L85 PathProgramCache]: Analyzing trace with hash 85580979, now seen corresponding path program 1 times [2022-04-15 06:13:01,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:13:01,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [356984812] [2022-04-15 06:13:03,764 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:13:03,766 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:13:03,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1895159821, now seen corresponding path program 1 times [2022-04-15 06:13:03,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:13:03,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049190594] [2022-04-15 06:13:03,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:13:03,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:13:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:03,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:13:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:03,852 INFO L290 TraceCheckUtils]: 0: Hoare triple {269#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {262#true} is VALID [2022-04-15 06:13:03,852 INFO L290 TraceCheckUtils]: 1: Hoare triple {262#true} assume true; {262#true} is VALID [2022-04-15 06:13:03,852 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {262#true} {262#true} #56#return; {262#true} is VALID [2022-04-15 06:13:03,853 INFO L272 TraceCheckUtils]: 0: Hoare triple {262#true} call ULTIMATE.init(); {269#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:13:03,853 INFO L290 TraceCheckUtils]: 1: Hoare triple {269#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {262#true} is VALID [2022-04-15 06:13:03,853 INFO L290 TraceCheckUtils]: 2: Hoare triple {262#true} assume true; {262#true} is VALID [2022-04-15 06:13:03,854 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {262#true} {262#true} #56#return; {262#true} is VALID [2022-04-15 06:13:03,854 INFO L272 TraceCheckUtils]: 4: Hoare triple {262#true} call #t~ret1 := main(); {262#true} is VALID [2022-04-15 06:13:03,854 INFO L290 TraceCheckUtils]: 5: Hoare triple {262#true} ~x~0 := 0;~y~0 := 50; {267#(= main_~x~0 0)} is VALID [2022-04-15 06:13:03,855 INFO L290 TraceCheckUtils]: 6: Hoare triple {267#(= main_~x~0 0)} [60] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_9 v_main_~x~0_8))) (or (and .cse0 (<= 50 v_main_~x~0_9)) .cse0 (and (< v_main_~x~0_8 51) (< v_main_~x~0_9 v_main_~x~0_8)))) InVars {main_~x~0=v_main_~x~0_9} OutVars{main_~x~0=v_main_~x~0_8} AuxVars[] AssignedVars[main_~x~0] {268#(<= main_~x~0 50)} is VALID [2022-04-15 06:13:03,856 INFO L290 TraceCheckUtils]: 7: Hoare triple {268#(<= main_~x~0 50)} [59] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {263#false} is VALID [2022-04-15 06:13:03,856 INFO L272 TraceCheckUtils]: 8: Hoare triple {263#false} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {263#false} is VALID [2022-04-15 06:13:03,856 INFO L290 TraceCheckUtils]: 9: Hoare triple {263#false} ~cond := #in~cond; {263#false} is VALID [2022-04-15 06:13:03,856 INFO L290 TraceCheckUtils]: 10: Hoare triple {263#false} assume 0 == ~cond; {263#false} is VALID [2022-04-15 06:13:03,857 INFO L290 TraceCheckUtils]: 11: Hoare triple {263#false} assume !false; {263#false} is VALID [2022-04-15 06:13:03,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:03,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:13:03,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049190594] [2022-04-15 06:13:03,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049190594] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:13:03,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:13:03,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-15 06:13:03,935 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:13:03,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [356984812] [2022-04-15 06:13:03,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [356984812] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:13:03,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:13:03,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-15 06:13:03,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934707519] [2022-04-15 06:13:03,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:13:03,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-04-15 06:13:03,937 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:13:03,937 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:03,950 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:03,950 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-15 06:13:03,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:13:03,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-15 06:13:03,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-04-15 06:13:03,952 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:04,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:04,056 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-04-15 06:13:04,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-15 06:13:04,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-04-15 06:13:04,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:13:04,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:04,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 24 transitions. [2022-04-15 06:13:04,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:04,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 24 transitions. [2022-04-15 06:13:04,067 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 24 transitions. [2022-04-15 06:13:04,089 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:04,090 INFO L225 Difference]: With dead ends: 22 [2022-04-15 06:13:04,090 INFO L226 Difference]: Without dead ends: 17 [2022-04-15 06:13:04,091 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-04-15 06:13:04,092 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 06:13:04,092 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 23 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 06:13:04,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-04-15 06:13:04,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-04-15 06:13:04,100 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:13:04,101 INFO L82 GeneralOperation]: Start isEquivalent. First operand 17 states. Second operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:04,101 INFO L74 IsIncluded]: Start isIncluded. First operand 17 states. Second operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:04,101 INFO L87 Difference]: Start difference. First operand 17 states. Second operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:04,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:04,102 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-04-15 06:13:04,102 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-15 06:13:04,103 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:13:04,103 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:13:04,105 INFO L74 IsIncluded]: Start isIncluded. First operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 17 states. [2022-04-15 06:13:04,105 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 17 states. [2022-04-15 06:13:04,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:04,108 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-04-15 06:13:04,108 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-15 06:13:04,108 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:13:04,108 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:13:04,108 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:13:04,109 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:13:04,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:04,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-04-15 06:13:04,111 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2022-04-15 06:13:04,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:13:04,111 INFO L478 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-04-15 06:13:04,112 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:04,112 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 17 states and 19 transitions. [2022-04-15 06:13:04,131 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:04,131 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-15 06:13:04,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-04-15 06:13:04,132 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:13:04,132 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:13:04,132 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-15 06:13:04,132 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:13:04,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:13:04,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1708614478, now seen corresponding path program 1 times [2022-04-15 06:13:04,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:13:04,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [212650999] [2022-04-15 06:13:04,330 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:13:04,666 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:13:04,667 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:13:04,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1039142196, now seen corresponding path program 1 times [2022-04-15 06:13:04,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:13:04,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112103625] [2022-04-15 06:13:04,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:13:04,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:13:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:04,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:13:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:04,852 INFO L290 TraceCheckUtils]: 0: Hoare triple {401#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {390#true} is VALID [2022-04-15 06:13:04,852 INFO L290 TraceCheckUtils]: 1: Hoare triple {390#true} assume true; {390#true} is VALID [2022-04-15 06:13:04,852 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {390#true} {390#true} #56#return; {390#true} is VALID [2022-04-15 06:13:04,853 INFO L272 TraceCheckUtils]: 0: Hoare triple {390#true} call ULTIMATE.init(); {401#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:13:04,853 INFO L290 TraceCheckUtils]: 1: Hoare triple {401#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {390#true} is VALID [2022-04-15 06:13:04,854 INFO L290 TraceCheckUtils]: 2: Hoare triple {390#true} assume true; {390#true} is VALID [2022-04-15 06:13:04,854 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {390#true} {390#true} #56#return; {390#true} is VALID [2022-04-15 06:13:04,854 INFO L272 TraceCheckUtils]: 4: Hoare triple {390#true} call #t~ret1 := main(); {390#true} is VALID [2022-04-15 06:13:04,857 INFO L290 TraceCheckUtils]: 5: Hoare triple {390#true} ~x~0 := 0;~y~0 := 50; {395#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:04,858 INFO L290 TraceCheckUtils]: 6: Hoare triple {395#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [62] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_16 v_main_~x~0_15))) (or (and (< v_main_~x~0_15 51) (< v_main_~x~0_16 v_main_~x~0_15)) (and (not (< v_main_~x~0_16 50)) .cse0) .cse0)) InVars {main_~x~0=v_main_~x~0_16} OutVars{main_~x~0=v_main_~x~0_15} AuxVars[] AssignedVars[main_~x~0] {396#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:04,859 INFO L290 TraceCheckUtils]: 7: Hoare triple {396#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [63] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {396#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:04,860 INFO L290 TraceCheckUtils]: 8: Hoare triple {396#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [64] L28-2-->L27-2_primed: Formula: (let ((.cse1 (= v_main_~x~0_18 v_main_~x~0_17)) (.cse2 (= v_main_~y~0_7 v_main_~y~0_6)) (.cse0 (<= 50 v_main_~x~0_18))) (or (and (= (+ v_main_~x~0_17 v_main_~y~0_7) (+ v_main_~x~0_18 v_main_~y~0_6)) (< v_main_~x~0_17 101) (< v_main_~x~0_18 v_main_~x~0_17) .cse0) (and .cse1 .cse2) (and .cse1 .cse2 (or (not (< v_main_~x~0_18 100)) (not .cse0))))) InVars {main_~x~0=v_main_~x~0_18, main_~y~0=v_main_~y~0_7} OutVars{main_~x~0=v_main_~x~0_17, main_~y~0=v_main_~y~0_6} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {397#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:13:04,861 INFO L290 TraceCheckUtils]: 9: Hoare triple {397#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [61] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {398#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:04,862 INFO L272 TraceCheckUtils]: 10: Hoare triple {398#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {399#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:13:04,862 INFO L290 TraceCheckUtils]: 11: Hoare triple {399#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {400#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:13:04,863 INFO L290 TraceCheckUtils]: 12: Hoare triple {400#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {391#false} is VALID [2022-04-15 06:13:04,863 INFO L290 TraceCheckUtils]: 13: Hoare triple {391#false} assume !false; {391#false} is VALID [2022-04-15 06:13:04,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:04,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:13:04,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112103625] [2022-04-15 06:13:04,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112103625] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:13:04,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864387321] [2022-04-15 06:13:04,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:13:04,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:13:04,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:13:04,867 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:13:04,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-15 06:13:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:04,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:13:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:04,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:13:05,434 INFO L272 TraceCheckUtils]: 0: Hoare triple {390#true} call ULTIMATE.init(); {390#true} is VALID [2022-04-15 06:13:05,434 INFO L290 TraceCheckUtils]: 1: Hoare triple {390#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {390#true} is VALID [2022-04-15 06:13:05,434 INFO L290 TraceCheckUtils]: 2: Hoare triple {390#true} assume true; {390#true} is VALID [2022-04-15 06:13:05,435 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {390#true} {390#true} #56#return; {390#true} is VALID [2022-04-15 06:13:05,435 INFO L272 TraceCheckUtils]: 4: Hoare triple {390#true} call #t~ret1 := main(); {390#true} is VALID [2022-04-15 06:13:05,439 INFO L290 TraceCheckUtils]: 5: Hoare triple {390#true} ~x~0 := 0;~y~0 := 50; {420#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:13:05,439 INFO L290 TraceCheckUtils]: 6: Hoare triple {420#(and (<= main_~x~0 0) (= main_~y~0 50))} [62] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_16 v_main_~x~0_15))) (or (and (< v_main_~x~0_15 51) (< v_main_~x~0_16 v_main_~x~0_15)) (and (not (< v_main_~x~0_16 50)) .cse0) .cse0)) InVars {main_~x~0=v_main_~x~0_16} OutVars{main_~x~0=v_main_~x~0_15} AuxVars[] AssignedVars[main_~x~0] {424#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:13:05,440 INFO L290 TraceCheckUtils]: 7: Hoare triple {424#(and (= main_~y~0 50) (< main_~x~0 51))} [63] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {424#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:13:05,441 INFO L290 TraceCheckUtils]: 8: Hoare triple {424#(and (= main_~y~0 50) (< main_~x~0 51))} [64] L28-2-->L27-2_primed: Formula: (let ((.cse1 (= v_main_~x~0_18 v_main_~x~0_17)) (.cse2 (= v_main_~y~0_7 v_main_~y~0_6)) (.cse0 (<= 50 v_main_~x~0_18))) (or (and (= (+ v_main_~x~0_17 v_main_~y~0_7) (+ v_main_~x~0_18 v_main_~y~0_6)) (< v_main_~x~0_17 101) (< v_main_~x~0_18 v_main_~x~0_17) .cse0) (and .cse1 .cse2) (and .cse1 .cse2 (or (not (< v_main_~x~0_18 100)) (not .cse0))))) InVars {main_~x~0=v_main_~x~0_18, main_~y~0=v_main_~y~0_7} OutVars{main_~x~0=v_main_~x~0_17, main_~y~0=v_main_~y~0_6} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {431#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:13:05,442 INFO L290 TraceCheckUtils]: 9: Hoare triple {431#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [61] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {398#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:05,443 INFO L272 TraceCheckUtils]: 10: Hoare triple {398#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {438#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:13:05,443 INFO L290 TraceCheckUtils]: 11: Hoare triple {438#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {442#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:13:05,444 INFO L290 TraceCheckUtils]: 12: Hoare triple {442#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {391#false} is VALID [2022-04-15 06:13:05,444 INFO L290 TraceCheckUtils]: 13: Hoare triple {391#false} assume !false; {391#false} is VALID [2022-04-15 06:13:05,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:05,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:13:06,089 INFO L290 TraceCheckUtils]: 13: Hoare triple {391#false} assume !false; {391#false} is VALID [2022-04-15 06:13:06,090 INFO L290 TraceCheckUtils]: 12: Hoare triple {442#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {391#false} is VALID [2022-04-15 06:13:06,090 INFO L290 TraceCheckUtils]: 11: Hoare triple {438#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {442#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:13:06,092 INFO L272 TraceCheckUtils]: 10: Hoare triple {398#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {438#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:13:06,093 INFO L290 TraceCheckUtils]: 9: Hoare triple {461#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [61] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {398#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:06,094 INFO L290 TraceCheckUtils]: 8: Hoare triple {465#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [64] L28-2-->L27-2_primed: Formula: (let ((.cse1 (= v_main_~x~0_18 v_main_~x~0_17)) (.cse2 (= v_main_~y~0_7 v_main_~y~0_6)) (.cse0 (<= 50 v_main_~x~0_18))) (or (and (= (+ v_main_~x~0_17 v_main_~y~0_7) (+ v_main_~x~0_18 v_main_~y~0_6)) (< v_main_~x~0_17 101) (< v_main_~x~0_18 v_main_~x~0_17) .cse0) (and .cse1 .cse2) (and .cse1 .cse2 (or (not (< v_main_~x~0_18 100)) (not .cse0))))) InVars {main_~x~0=v_main_~x~0_18, main_~y~0=v_main_~y~0_7} OutVars{main_~x~0=v_main_~x~0_17, main_~y~0=v_main_~y~0_6} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {461#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:13:06,094 INFO L290 TraceCheckUtils]: 7: Hoare triple {465#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [63] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {465#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:13:06,096 INFO L290 TraceCheckUtils]: 6: Hoare triple {472#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= 50 main_~y~0) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [62] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_16 v_main_~x~0_15))) (or (and (< v_main_~x~0_15 51) (< v_main_~x~0_16 v_main_~x~0_15)) (and (not (< v_main_~x~0_16 50)) .cse0) .cse0)) InVars {main_~x~0=v_main_~x~0_16} OutVars{main_~x~0=v_main_~x~0_15} AuxVars[] AssignedVars[main_~x~0] {465#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:13:06,096 INFO L290 TraceCheckUtils]: 5: Hoare triple {390#true} ~x~0 := 0;~y~0 := 50; {472#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= 50 main_~y~0) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:13:06,096 INFO L272 TraceCheckUtils]: 4: Hoare triple {390#true} call #t~ret1 := main(); {390#true} is VALID [2022-04-15 06:13:06,096 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {390#true} {390#true} #56#return; {390#true} is VALID [2022-04-15 06:13:06,097 INFO L290 TraceCheckUtils]: 2: Hoare triple {390#true} assume true; {390#true} is VALID [2022-04-15 06:13:06,097 INFO L290 TraceCheckUtils]: 1: Hoare triple {390#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {390#true} is VALID [2022-04-15 06:13:06,097 INFO L272 TraceCheckUtils]: 0: Hoare triple {390#true} call ULTIMATE.init(); {390#true} is VALID [2022-04-15 06:13:06,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:06,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864387321] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:13:06,098 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:13:06,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:13:06,275 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:13:06,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [212650999] [2022-04-15 06:13:06,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [212650999] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:13:06,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:13:06,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-15 06:13:06,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898396347] [2022-04-15 06:13:06,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:13:06,276 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-04-15 06:13:06,277 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:13:06,277 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 9 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:06,291 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:06,291 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-15 06:13:06,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:13:06,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-15 06:13:06,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2022-04-15 06:13:06,292 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:06,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:06,585 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2022-04-15 06:13:06,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-15 06:13:06,586 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-04-15 06:13:06,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:13:06,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:06,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 31 transitions. [2022-04-15 06:13:06,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:06,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 31 transitions. [2022-04-15 06:13:06,588 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 31 transitions. [2022-04-15 06:13:06,619 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:06,620 INFO L225 Difference]: With dead ends: 26 [2022-04-15 06:13:06,620 INFO L226 Difference]: Without dead ends: 19 [2022-04-15 06:13:06,620 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2022-04-15 06:13:06,621 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-15 06:13:06,621 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 43 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-15 06:13:06,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-04-15 06:13:06,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-04-15 06:13:06,640 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:13:06,640 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:06,640 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:06,640 INFO L87 Difference]: Start difference. First operand 19 states. Second operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:06,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:06,641 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-15 06:13:06,641 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-15 06:13:06,642 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:13:06,642 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:13:06,642 INFO L74 IsIncluded]: Start isIncluded. First operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 19 states. [2022-04-15 06:13:06,642 INFO L87 Difference]: Start difference. First operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 19 states. [2022-04-15 06:13:06,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:06,643 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-15 06:13:06,643 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-15 06:13:06,643 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:13:06,644 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:13:06,644 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:13:06,644 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:13:06,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:06,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-04-15 06:13:06,645 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2022-04-15 06:13:06,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:13:06,645 INFO L478 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-04-15 06:13:06,645 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:06,645 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 19 states and 21 transitions. [2022-04-15 06:13:06,670 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 21 edges. 21 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:06,670 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-15 06:13:06,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-15 06:13:06,670 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:13:06,670 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:13:06,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-15 06:13:06,895 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:13:06,895 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:13:06,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:13:06,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1924288727, now seen corresponding path program 2 times [2022-04-15 06:13:06,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:13:06,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1074233750] [2022-04-15 06:13:11,401 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-15 06:13:11,672 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:13:12,067 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:13:12,068 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:13:12,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1010389964, now seen corresponding path program 1 times [2022-04-15 06:13:12,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:13:12,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551987804] [2022-04-15 06:13:12,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:13:12,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:13:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:12,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:13:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:12,239 INFO L290 TraceCheckUtils]: 0: Hoare triple {641#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {630#true} is VALID [2022-04-15 06:13:12,239 INFO L290 TraceCheckUtils]: 1: Hoare triple {630#true} assume true; {630#true} is VALID [2022-04-15 06:13:12,240 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {630#true} {630#true} #56#return; {630#true} is VALID [2022-04-15 06:13:12,240 INFO L272 TraceCheckUtils]: 0: Hoare triple {630#true} call ULTIMATE.init(); {641#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:13:12,241 INFO L290 TraceCheckUtils]: 1: Hoare triple {641#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {630#true} is VALID [2022-04-15 06:13:12,242 INFO L290 TraceCheckUtils]: 2: Hoare triple {630#true} assume true; {630#true} is VALID [2022-04-15 06:13:12,242 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {630#true} {630#true} #56#return; {630#true} is VALID [2022-04-15 06:13:12,242 INFO L272 TraceCheckUtils]: 4: Hoare triple {630#true} call #t~ret1 := main(); {630#true} is VALID [2022-04-15 06:13:12,243 INFO L290 TraceCheckUtils]: 5: Hoare triple {630#true} ~x~0 := 0;~y~0 := 50; {635#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:12,244 INFO L290 TraceCheckUtils]: 6: Hoare triple {635#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [66] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_35 v_main_~x~0_34))) (or (and (< v_main_~x~0_34 51) (< v_main_~x~0_35 v_main_~x~0_34)) (and (not (< v_main_~x~0_35 50)) .cse0) .cse0)) InVars {main_~x~0=v_main_~x~0_35} OutVars{main_~x~0=v_main_~x~0_34} AuxVars[] AssignedVars[main_~x~0] {636#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:12,244 INFO L290 TraceCheckUtils]: 7: Hoare triple {636#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [67] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {636#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:12,245 INFO L290 TraceCheckUtils]: 8: Hoare triple {636#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [68] L28-2-->L27-2_primed: Formula: (let ((.cse1 (<= 50 v_main_~x~0_37)) (.cse2 (= v_main_~x~0_37 v_main_~x~0_36)) (.cse3 (= v_main_~y~0_17 v_main_~y~0_16))) (or (let ((.cse0 (+ v_main_~x~0_37 v_main_~y~0_16))) (and (< v_main_~y~0_17 v_main_~y~0_16) (= (+ v_main_~x~0_36 v_main_~y~0_17) .cse0) (< .cse0 (+ 101 v_main_~y~0_17)) .cse1)) (and .cse2 .cse3) (and (or (not .cse1) (not (< v_main_~x~0_37 100))) .cse2 .cse3))) InVars {main_~x~0=v_main_~x~0_37, main_~y~0=v_main_~y~0_17} OutVars{main_~x~0=v_main_~x~0_36, main_~y~0=v_main_~y~0_16} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {637#(or (and (or (< 99 main_~y~0) (<= main_~x~0 main_~y~0)) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:13:12,246 INFO L290 TraceCheckUtils]: 9: Hoare triple {637#(or (and (or (< 99 main_~y~0) (<= main_~x~0 main_~y~0)) (<= main_~y~0 100)) (<= main_~x~0 50))} [65] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {638#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:12,247 INFO L272 TraceCheckUtils]: 10: Hoare triple {638#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {639#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:13:12,251 INFO L290 TraceCheckUtils]: 11: Hoare triple {639#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {640#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:13:12,251 INFO L290 TraceCheckUtils]: 12: Hoare triple {640#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {631#false} is VALID [2022-04-15 06:13:12,252 INFO L290 TraceCheckUtils]: 13: Hoare triple {631#false} assume !false; {631#false} is VALID [2022-04-15 06:13:12,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:12,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:13:12,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551987804] [2022-04-15 06:13:12,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551987804] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:13:12,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450622524] [2022-04-15 06:13:12,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:13:12,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:13:12,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:13:12,254 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:13:12,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-15 06:13:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:12,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:13:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:12,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:13:12,666 INFO L272 TraceCheckUtils]: 0: Hoare triple {630#true} call ULTIMATE.init(); {630#true} is VALID [2022-04-15 06:13:12,667 INFO L290 TraceCheckUtils]: 1: Hoare triple {630#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {630#true} is VALID [2022-04-15 06:13:12,667 INFO L290 TraceCheckUtils]: 2: Hoare triple {630#true} assume true; {630#true} is VALID [2022-04-15 06:13:12,667 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {630#true} {630#true} #56#return; {630#true} is VALID [2022-04-15 06:13:12,667 INFO L272 TraceCheckUtils]: 4: Hoare triple {630#true} call #t~ret1 := main(); {630#true} is VALID [2022-04-15 06:13:12,668 INFO L290 TraceCheckUtils]: 5: Hoare triple {630#true} ~x~0 := 0;~y~0 := 50; {660#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:13:12,669 INFO L290 TraceCheckUtils]: 6: Hoare triple {660#(and (<= main_~x~0 0) (= main_~y~0 50))} [66] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_35 v_main_~x~0_34))) (or (and (< v_main_~x~0_34 51) (< v_main_~x~0_35 v_main_~x~0_34)) (and (not (< v_main_~x~0_35 50)) .cse0) .cse0)) InVars {main_~x~0=v_main_~x~0_35} OutVars{main_~x~0=v_main_~x~0_34} AuxVars[] AssignedVars[main_~x~0] {664#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:13:12,670 INFO L290 TraceCheckUtils]: 7: Hoare triple {664#(and (= main_~y~0 50) (< main_~x~0 51))} [67] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {664#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:13:12,675 INFO L290 TraceCheckUtils]: 8: Hoare triple {664#(and (= main_~y~0 50) (< main_~x~0 51))} [68] L28-2-->L27-2_primed: Formula: (let ((.cse1 (<= 50 v_main_~x~0_37)) (.cse2 (= v_main_~x~0_37 v_main_~x~0_36)) (.cse3 (= v_main_~y~0_17 v_main_~y~0_16))) (or (let ((.cse0 (+ v_main_~x~0_37 v_main_~y~0_16))) (and (< v_main_~y~0_17 v_main_~y~0_16) (= (+ v_main_~x~0_36 v_main_~y~0_17) .cse0) (< .cse0 (+ 101 v_main_~y~0_17)) .cse1)) (and .cse2 .cse3) (and (or (not .cse1) (not (< v_main_~x~0_37 100))) .cse2 .cse3))) InVars {main_~x~0=v_main_~x~0_37, main_~y~0=v_main_~y~0_17} OutVars{main_~x~0=v_main_~x~0_36, main_~y~0=v_main_~y~0_16} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {671#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:13:12,676 INFO L290 TraceCheckUtils]: 9: Hoare triple {671#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [65] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {638#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:12,677 INFO L272 TraceCheckUtils]: 10: Hoare triple {638#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {678#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:13:12,687 INFO L290 TraceCheckUtils]: 11: Hoare triple {678#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {682#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:13:12,688 INFO L290 TraceCheckUtils]: 12: Hoare triple {682#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {631#false} is VALID [2022-04-15 06:13:12,688 INFO L290 TraceCheckUtils]: 13: Hoare triple {631#false} assume !false; {631#false} is VALID [2022-04-15 06:13:12,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:12,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:13:13,348 INFO L290 TraceCheckUtils]: 13: Hoare triple {631#false} assume !false; {631#false} is VALID [2022-04-15 06:13:13,351 INFO L290 TraceCheckUtils]: 12: Hoare triple {682#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {631#false} is VALID [2022-04-15 06:13:13,351 INFO L290 TraceCheckUtils]: 11: Hoare triple {678#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {682#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:13:13,353 INFO L272 TraceCheckUtils]: 10: Hoare triple {638#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {678#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:13:13,354 INFO L290 TraceCheckUtils]: 9: Hoare triple {701#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [65] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {638#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:13,356 INFO L290 TraceCheckUtils]: 8: Hoare triple {705#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [68] L28-2-->L27-2_primed: Formula: (let ((.cse1 (<= 50 v_main_~x~0_37)) (.cse2 (= v_main_~x~0_37 v_main_~x~0_36)) (.cse3 (= v_main_~y~0_17 v_main_~y~0_16))) (or (let ((.cse0 (+ v_main_~x~0_37 v_main_~y~0_16))) (and (< v_main_~y~0_17 v_main_~y~0_16) (= (+ v_main_~x~0_36 v_main_~y~0_17) .cse0) (< .cse0 (+ 101 v_main_~y~0_17)) .cse1)) (and .cse2 .cse3) (and (or (not .cse1) (not (< v_main_~x~0_37 100))) .cse2 .cse3))) InVars {main_~x~0=v_main_~x~0_37, main_~y~0=v_main_~y~0_17} OutVars{main_~x~0=v_main_~x~0_36, main_~y~0=v_main_~y~0_16} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {701#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:13:13,356 INFO L290 TraceCheckUtils]: 7: Hoare triple {705#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [67] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {705#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:13:13,357 INFO L290 TraceCheckUtils]: 6: Hoare triple {712#(and (<= 50 main_~y~0) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [66] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_35 v_main_~x~0_34))) (or (and (< v_main_~x~0_34 51) (< v_main_~x~0_35 v_main_~x~0_34)) (and (not (< v_main_~x~0_35 50)) .cse0) .cse0)) InVars {main_~x~0=v_main_~x~0_35} OutVars{main_~x~0=v_main_~x~0_34} AuxVars[] AssignedVars[main_~x~0] {705#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:13:13,358 INFO L290 TraceCheckUtils]: 5: Hoare triple {630#true} ~x~0 := 0;~y~0 := 50; {712#(and (<= 50 main_~y~0) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:13:13,358 INFO L272 TraceCheckUtils]: 4: Hoare triple {630#true} call #t~ret1 := main(); {630#true} is VALID [2022-04-15 06:13:13,359 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {630#true} {630#true} #56#return; {630#true} is VALID [2022-04-15 06:13:13,360 INFO L290 TraceCheckUtils]: 2: Hoare triple {630#true} assume true; {630#true} is VALID [2022-04-15 06:13:13,360 INFO L290 TraceCheckUtils]: 1: Hoare triple {630#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {630#true} is VALID [2022-04-15 06:13:13,360 INFO L272 TraceCheckUtils]: 0: Hoare triple {630#true} call ULTIMATE.init(); {630#true} is VALID [2022-04-15 06:13:13,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:13,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450622524] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:13:13,361 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:13:13,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:13:13,626 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:13:13,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1074233750] [2022-04-15 06:13:13,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1074233750] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:13:13,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:13:13,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-15 06:13:13,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649882175] [2022-04-15 06:13:13,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:13:13,629 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-04-15 06:13:13,629 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:13:13,629 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:13,648 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:13,648 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-15 06:13:13,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:13:13,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-15 06:13:13,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2022-04-15 06:13:13,649 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:13,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:13,962 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2022-04-15 06:13:13,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-15 06:13:13,963 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-04-15 06:13:13,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:13:13,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:13,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 33 transitions. [2022-04-15 06:13:13,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:13,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 33 transitions. [2022-04-15 06:13:13,966 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 33 transitions. [2022-04-15 06:13:13,993 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:13,993 INFO L225 Difference]: With dead ends: 28 [2022-04-15 06:13:13,993 INFO L226 Difference]: Without dead ends: 21 [2022-04-15 06:13:13,994 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2022-04-15 06:13:13,995 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-15 06:13:13,995 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 48 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-15 06:13:13,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-04-15 06:13:14,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-04-15 06:13:14,012 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:13:14,013 INFO L82 GeneralOperation]: Start isEquivalent. First operand 21 states. Second operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:14,013 INFO L74 IsIncluded]: Start isIncluded. First operand 21 states. Second operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:14,013 INFO L87 Difference]: Start difference. First operand 21 states. Second operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:14,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:14,014 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2022-04-15 06:13:14,014 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-04-15 06:13:14,014 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:13:14,014 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:13:14,015 INFO L74 IsIncluded]: Start isIncluded. First operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 21 states. [2022-04-15 06:13:14,015 INFO L87 Difference]: Start difference. First operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 21 states. [2022-04-15 06:13:14,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:14,016 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2022-04-15 06:13:14,016 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-04-15 06:13:14,016 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:13:14,016 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:13:14,016 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:13:14,016 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:13:14,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:14,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-04-15 06:13:14,017 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 17 [2022-04-15 06:13:14,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:13:14,017 INFO L478 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-04-15 06:13:14,018 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:14,018 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 21 states and 23 transitions. [2022-04-15 06:13:14,044 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:14,044 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-04-15 06:13:14,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-04-15 06:13:14,045 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:13:14,045 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:13:14,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-15 06:13:14,255 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:13:14,256 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:13:14,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:13:14,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1335857084, now seen corresponding path program 3 times [2022-04-15 06:13:14,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:13:14,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1477672551] [2022-04-15 06:13:14,414 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:13:14,704 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:13:14,706 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:13:14,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1235045172, now seen corresponding path program 1 times [2022-04-15 06:13:14,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:13:14,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641244681] [2022-04-15 06:13:14,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:13:14,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:13:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:14,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:13:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:14,924 INFO L290 TraceCheckUtils]: 0: Hoare triple {896#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {885#true} is VALID [2022-04-15 06:13:14,925 INFO L290 TraceCheckUtils]: 1: Hoare triple {885#true} assume true; {885#true} is VALID [2022-04-15 06:13:14,925 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {885#true} {885#true} #56#return; {885#true} is VALID [2022-04-15 06:13:14,925 INFO L272 TraceCheckUtils]: 0: Hoare triple {885#true} call ULTIMATE.init(); {896#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:13:14,926 INFO L290 TraceCheckUtils]: 1: Hoare triple {896#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {885#true} is VALID [2022-04-15 06:13:14,926 INFO L290 TraceCheckUtils]: 2: Hoare triple {885#true} assume true; {885#true} is VALID [2022-04-15 06:13:14,926 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {885#true} {885#true} #56#return; {885#true} is VALID [2022-04-15 06:13:14,926 INFO L272 TraceCheckUtils]: 4: Hoare triple {885#true} call #t~ret1 := main(); {885#true} is VALID [2022-04-15 06:13:14,926 INFO L290 TraceCheckUtils]: 5: Hoare triple {885#true} ~x~0 := 0;~y~0 := 50; {890#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:14,928 INFO L290 TraceCheckUtils]: 6: Hoare triple {890#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [70] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_55 v_main_~x~0_54))) (or (and (< v_main_~x~0_54 51) (< v_main_~x~0_55 v_main_~x~0_54)) (and (not (< v_main_~x~0_55 50)) .cse0) .cse0)) InVars {main_~x~0=v_main_~x~0_55} OutVars{main_~x~0=v_main_~x~0_54} AuxVars[] AssignedVars[main_~x~0] {891#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:14,928 INFO L290 TraceCheckUtils]: 7: Hoare triple {891#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [71] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {891#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:14,929 INFO L290 TraceCheckUtils]: 8: Hoare triple {891#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [72] L28-2-->L27-2_primed: Formula: (let ((.cse2 (<= 50 v_main_~x~0_57)) (.cse0 (= v_main_~y~0_28 v_main_~y~0_27)) (.cse1 (= v_main_~x~0_57 v_main_~x~0_56))) (or (and .cse0 .cse1 (or (not .cse2) (not (< v_main_~x~0_57 100)))) (and (< v_main_~x~0_56 101) (= (+ v_main_~x~0_57 v_main_~y~0_27) (+ v_main_~x~0_56 v_main_~y~0_28)) (< v_main_~x~0_57 v_main_~x~0_56) .cse2) (and .cse0 .cse1))) InVars {main_~x~0=v_main_~x~0_57, main_~y~0=v_main_~y~0_28} OutVars{main_~x~0=v_main_~x~0_56, main_~y~0=v_main_~y~0_27} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {892#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:13:14,930 INFO L290 TraceCheckUtils]: 9: Hoare triple {892#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [69] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {893#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:14,930 INFO L272 TraceCheckUtils]: 10: Hoare triple {893#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {894#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:13:14,931 INFO L290 TraceCheckUtils]: 11: Hoare triple {894#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {895#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:13:14,931 INFO L290 TraceCheckUtils]: 12: Hoare triple {895#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {886#false} is VALID [2022-04-15 06:13:14,931 INFO L290 TraceCheckUtils]: 13: Hoare triple {886#false} assume !false; {886#false} is VALID [2022-04-15 06:13:14,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:14,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:13:14,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641244681] [2022-04-15 06:13:14,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641244681] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:13:14,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313719045] [2022-04-15 06:13:14,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:13:14,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:13:14,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:13:14,934 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:13:14,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-15 06:13:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:14,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:13:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:14,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:13:15,413 INFO L272 TraceCheckUtils]: 0: Hoare triple {885#true} call ULTIMATE.init(); {885#true} is VALID [2022-04-15 06:13:15,414 INFO L290 TraceCheckUtils]: 1: Hoare triple {885#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {885#true} is VALID [2022-04-15 06:13:15,414 INFO L290 TraceCheckUtils]: 2: Hoare triple {885#true} assume true; {885#true} is VALID [2022-04-15 06:13:15,414 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {885#true} {885#true} #56#return; {885#true} is VALID [2022-04-15 06:13:15,414 INFO L272 TraceCheckUtils]: 4: Hoare triple {885#true} call #t~ret1 := main(); {885#true} is VALID [2022-04-15 06:13:15,414 INFO L290 TraceCheckUtils]: 5: Hoare triple {885#true} ~x~0 := 0;~y~0 := 50; {915#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:13:15,415 INFO L290 TraceCheckUtils]: 6: Hoare triple {915#(and (<= main_~x~0 0) (= main_~y~0 50))} [70] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_55 v_main_~x~0_54))) (or (and (< v_main_~x~0_54 51) (< v_main_~x~0_55 v_main_~x~0_54)) (and (not (< v_main_~x~0_55 50)) .cse0) .cse0)) InVars {main_~x~0=v_main_~x~0_55} OutVars{main_~x~0=v_main_~x~0_54} AuxVars[] AssignedVars[main_~x~0] {919#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:13:15,419 INFO L290 TraceCheckUtils]: 7: Hoare triple {919#(and (= main_~y~0 50) (< main_~x~0 51))} [71] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {919#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:13:15,420 INFO L290 TraceCheckUtils]: 8: Hoare triple {919#(and (= main_~y~0 50) (< main_~x~0 51))} [72] L28-2-->L27-2_primed: Formula: (let ((.cse2 (<= 50 v_main_~x~0_57)) (.cse0 (= v_main_~y~0_28 v_main_~y~0_27)) (.cse1 (= v_main_~x~0_57 v_main_~x~0_56))) (or (and .cse0 .cse1 (or (not .cse2) (not (< v_main_~x~0_57 100)))) (and (< v_main_~x~0_56 101) (= (+ v_main_~x~0_57 v_main_~y~0_27) (+ v_main_~x~0_56 v_main_~y~0_28)) (< v_main_~x~0_57 v_main_~x~0_56) .cse2) (and .cse0 .cse1))) InVars {main_~x~0=v_main_~x~0_57, main_~y~0=v_main_~y~0_28} OutVars{main_~x~0=v_main_~x~0_56, main_~y~0=v_main_~y~0_27} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {926#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:13:15,421 INFO L290 TraceCheckUtils]: 9: Hoare triple {926#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [69] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {893#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:15,422 INFO L272 TraceCheckUtils]: 10: Hoare triple {893#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {933#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:13:15,422 INFO L290 TraceCheckUtils]: 11: Hoare triple {933#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {937#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:13:15,422 INFO L290 TraceCheckUtils]: 12: Hoare triple {937#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {886#false} is VALID [2022-04-15 06:13:15,423 INFO L290 TraceCheckUtils]: 13: Hoare triple {886#false} assume !false; {886#false} is VALID [2022-04-15 06:13:15,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:15,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:13:15,997 INFO L290 TraceCheckUtils]: 13: Hoare triple {886#false} assume !false; {886#false} is VALID [2022-04-15 06:13:15,997 INFO L290 TraceCheckUtils]: 12: Hoare triple {937#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {886#false} is VALID [2022-04-15 06:13:15,998 INFO L290 TraceCheckUtils]: 11: Hoare triple {933#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {937#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:13:15,998 INFO L272 TraceCheckUtils]: 10: Hoare triple {893#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {933#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:13:15,999 INFO L290 TraceCheckUtils]: 9: Hoare triple {956#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [69] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {893#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:16,000 INFO L290 TraceCheckUtils]: 8: Hoare triple {960#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [72] L28-2-->L27-2_primed: Formula: (let ((.cse2 (<= 50 v_main_~x~0_57)) (.cse0 (= v_main_~y~0_28 v_main_~y~0_27)) (.cse1 (= v_main_~x~0_57 v_main_~x~0_56))) (or (and .cse0 .cse1 (or (not .cse2) (not (< v_main_~x~0_57 100)))) (and (< v_main_~x~0_56 101) (= (+ v_main_~x~0_57 v_main_~y~0_27) (+ v_main_~x~0_56 v_main_~y~0_28)) (< v_main_~x~0_57 v_main_~x~0_56) .cse2) (and .cse0 .cse1))) InVars {main_~x~0=v_main_~x~0_57, main_~y~0=v_main_~y~0_28} OutVars{main_~x~0=v_main_~x~0_56, main_~y~0=v_main_~y~0_27} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {956#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:13:16,000 INFO L290 TraceCheckUtils]: 7: Hoare triple {960#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [71] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {960#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:13:16,001 INFO L290 TraceCheckUtils]: 6: Hoare triple {967#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= 50 main_~y~0) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [70] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_55 v_main_~x~0_54))) (or (and (< v_main_~x~0_54 51) (< v_main_~x~0_55 v_main_~x~0_54)) (and (not (< v_main_~x~0_55 50)) .cse0) .cse0)) InVars {main_~x~0=v_main_~x~0_55} OutVars{main_~x~0=v_main_~x~0_54} AuxVars[] AssignedVars[main_~x~0] {960#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:13:16,002 INFO L290 TraceCheckUtils]: 5: Hoare triple {885#true} ~x~0 := 0;~y~0 := 50; {967#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= 50 main_~y~0) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:13:16,002 INFO L272 TraceCheckUtils]: 4: Hoare triple {885#true} call #t~ret1 := main(); {885#true} is VALID [2022-04-15 06:13:16,002 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {885#true} {885#true} #56#return; {885#true} is VALID [2022-04-15 06:13:16,002 INFO L290 TraceCheckUtils]: 2: Hoare triple {885#true} assume true; {885#true} is VALID [2022-04-15 06:13:16,002 INFO L290 TraceCheckUtils]: 1: Hoare triple {885#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {885#true} is VALID [2022-04-15 06:13:16,002 INFO L272 TraceCheckUtils]: 0: Hoare triple {885#true} call ULTIMATE.init(); {885#true} is VALID [2022-04-15 06:13:16,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:16,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313719045] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:13:16,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:13:16,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:13:16,236 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:13:16,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1477672551] [2022-04-15 06:13:16,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1477672551] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:13:16,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:13:16,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-15 06:13:16,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093868681] [2022-04-15 06:13:16,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:13:16,237 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-04-15 06:13:16,238 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:13:16,238 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 11 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:16,258 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:16,258 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-15 06:13:16,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:13:16,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-15 06:13:16,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2022-04-15 06:13:16,259 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:16,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:16,599 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-04-15 06:13:16,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-15 06:13:16,600 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-04-15 06:13:16,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:13:16,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:16,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 35 transitions. [2022-04-15 06:13:16,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:16,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 35 transitions. [2022-04-15 06:13:16,602 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 8 states and 35 transitions. [2022-04-15 06:13:16,630 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:16,631 INFO L225 Difference]: With dead ends: 30 [2022-04-15 06:13:16,631 INFO L226 Difference]: Without dead ends: 23 [2022-04-15 06:13:16,631 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=541, Unknown=0, NotChecked=0, Total=702 [2022-04-15 06:13:16,632 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-15 06:13:16,632 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 48 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-15 06:13:16,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-04-15 06:13:16,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-04-15 06:13:16,665 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:13:16,665 INFO L82 GeneralOperation]: Start isEquivalent. First operand 23 states. Second operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:16,665 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states. Second operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:16,665 INFO L87 Difference]: Start difference. First operand 23 states. Second operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:16,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:16,666 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-04-15 06:13:16,666 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-04-15 06:13:16,666 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:13:16,666 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:13:16,667 INFO L74 IsIncluded]: Start isIncluded. First operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 23 states. [2022-04-15 06:13:16,667 INFO L87 Difference]: Start difference. First operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 23 states. [2022-04-15 06:13:16,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:16,668 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-04-15 06:13:16,668 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-04-15 06:13:16,668 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:13:16,668 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:13:16,668 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:13:16,668 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:13:16,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:16,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-04-15 06:13:16,669 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 19 [2022-04-15 06:13:16,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:13:16,669 INFO L478 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-04-15 06:13:16,670 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:16,670 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 23 states and 25 transitions. [2022-04-15 06:13:16,689 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 25 edges. 25 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:16,689 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-04-15 06:13:16,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-04-15 06:13:16,690 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:13:16,690 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:13:16,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-15 06:13:16,891 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:13:16,892 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:13:16,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:13:16,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1506236063, now seen corresponding path program 4 times [2022-04-15 06:13:16,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:13:16,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [891182266] [2022-04-15 06:13:20,954 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-15 06:13:21,006 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:13:21,285 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:13:21,287 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:13:21,289 INFO L85 PathProgramCache]: Analyzing trace with hash 814486988, now seen corresponding path program 1 times [2022-04-15 06:13:21,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:13:21,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071229197] [2022-04-15 06:13:21,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:13:21,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:13:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:21,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:13:21,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:21,434 INFO L290 TraceCheckUtils]: 0: Hoare triple {1166#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {1155#true} is VALID [2022-04-15 06:13:21,434 INFO L290 TraceCheckUtils]: 1: Hoare triple {1155#true} assume true; {1155#true} is VALID [2022-04-15 06:13:21,434 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {1155#true} {1155#true} #56#return; {1155#true} is VALID [2022-04-15 06:13:21,435 INFO L272 TraceCheckUtils]: 0: Hoare triple {1155#true} call ULTIMATE.init(); {1166#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:13:21,435 INFO L290 TraceCheckUtils]: 1: Hoare triple {1166#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {1155#true} is VALID [2022-04-15 06:13:21,435 INFO L290 TraceCheckUtils]: 2: Hoare triple {1155#true} assume true; {1155#true} is VALID [2022-04-15 06:13:21,435 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1155#true} {1155#true} #56#return; {1155#true} is VALID [2022-04-15 06:13:21,435 INFO L272 TraceCheckUtils]: 4: Hoare triple {1155#true} call #t~ret1 := main(); {1155#true} is VALID [2022-04-15 06:13:21,436 INFO L290 TraceCheckUtils]: 5: Hoare triple {1155#true} ~x~0 := 0;~y~0 := 50; {1160#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:21,437 INFO L290 TraceCheckUtils]: 6: Hoare triple {1160#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [74] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_76 v_main_~x~0_75))) (or .cse0 (and (< v_main_~x~0_76 v_main_~x~0_75) (< v_main_~x~0_75 51)) (and .cse0 (not (< v_main_~x~0_76 50))))) InVars {main_~x~0=v_main_~x~0_76} OutVars{main_~x~0=v_main_~x~0_75} AuxVars[] AssignedVars[main_~x~0] {1161#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:13:21,437 INFO L290 TraceCheckUtils]: 7: Hoare triple {1161#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [75] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1161#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:13:21,439 INFO L290 TraceCheckUtils]: 8: Hoare triple {1161#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [76] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_78 v_main_~x~0_77)) (.cse1 (<= 50 v_main_~x~0_78))) (or (and .cse0 (= v_main_~y~0_40 v_main_~y~0_39)) (and (= v_main_~y~0_39 v_main_~y~0_40) .cse0 (or (not (< v_main_~x~0_78 100)) (not .cse1))) (let ((.cse2 (+ v_main_~x~0_78 v_main_~y~0_39))) (and (< .cse2 (+ 101 v_main_~y~0_40)) (< v_main_~y~0_40 v_main_~y~0_39) (= (+ v_main_~x~0_77 v_main_~y~0_40) .cse2) .cse1)))) InVars {main_~x~0=v_main_~x~0_78, main_~y~0=v_main_~y~0_40} OutVars{main_~x~0=v_main_~x~0_77, main_~y~0=v_main_~y~0_39} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {1162#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:13:21,439 INFO L290 TraceCheckUtils]: 9: Hoare triple {1162#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [73] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {1163#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:21,440 INFO L272 TraceCheckUtils]: 10: Hoare triple {1163#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {1164#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:13:21,440 INFO L290 TraceCheckUtils]: 11: Hoare triple {1164#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {1165#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:13:21,441 INFO L290 TraceCheckUtils]: 12: Hoare triple {1165#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {1156#false} is VALID [2022-04-15 06:13:21,441 INFO L290 TraceCheckUtils]: 13: Hoare triple {1156#false} assume !false; {1156#false} is VALID [2022-04-15 06:13:21,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:21,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:13:21,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071229197] [2022-04-15 06:13:21,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071229197] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:13:21,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849691984] [2022-04-15 06:13:21,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:13:21,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:13:21,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:13:21,443 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:13:21,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-15 06:13:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:21,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:13:21,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:21,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:13:21,896 INFO L272 TraceCheckUtils]: 0: Hoare triple {1155#true} call ULTIMATE.init(); {1155#true} is VALID [2022-04-15 06:13:21,896 INFO L290 TraceCheckUtils]: 1: Hoare triple {1155#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {1155#true} is VALID [2022-04-15 06:13:21,896 INFO L290 TraceCheckUtils]: 2: Hoare triple {1155#true} assume true; {1155#true} is VALID [2022-04-15 06:13:21,896 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1155#true} {1155#true} #56#return; {1155#true} is VALID [2022-04-15 06:13:21,900 INFO L272 TraceCheckUtils]: 4: Hoare triple {1155#true} call #t~ret1 := main(); {1155#true} is VALID [2022-04-15 06:13:21,901 INFO L290 TraceCheckUtils]: 5: Hoare triple {1155#true} ~x~0 := 0;~y~0 := 50; {1185#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:13:21,902 INFO L290 TraceCheckUtils]: 6: Hoare triple {1185#(and (<= main_~x~0 0) (= main_~y~0 50))} [74] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_76 v_main_~x~0_75))) (or .cse0 (and (< v_main_~x~0_76 v_main_~x~0_75) (< v_main_~x~0_75 51)) (and .cse0 (not (< v_main_~x~0_76 50))))) InVars {main_~x~0=v_main_~x~0_76} OutVars{main_~x~0=v_main_~x~0_75} AuxVars[] AssignedVars[main_~x~0] {1189#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:13:21,902 INFO L290 TraceCheckUtils]: 7: Hoare triple {1189#(and (= main_~y~0 50) (< main_~x~0 51))} [75] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1189#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:13:21,904 INFO L290 TraceCheckUtils]: 8: Hoare triple {1189#(and (= main_~y~0 50) (< main_~x~0 51))} [76] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_78 v_main_~x~0_77)) (.cse1 (<= 50 v_main_~x~0_78))) (or (and .cse0 (= v_main_~y~0_40 v_main_~y~0_39)) (and (= v_main_~y~0_39 v_main_~y~0_40) .cse0 (or (not (< v_main_~x~0_78 100)) (not .cse1))) (let ((.cse2 (+ v_main_~x~0_78 v_main_~y~0_39))) (and (< .cse2 (+ 101 v_main_~y~0_40)) (< v_main_~y~0_40 v_main_~y~0_39) (= (+ v_main_~x~0_77 v_main_~y~0_40) .cse2) .cse1)))) InVars {main_~x~0=v_main_~x~0_78, main_~y~0=v_main_~y~0_40} OutVars{main_~x~0=v_main_~x~0_77, main_~y~0=v_main_~y~0_39} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {1196#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:13:21,904 INFO L290 TraceCheckUtils]: 9: Hoare triple {1196#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [73] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {1163#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:21,905 INFO L272 TraceCheckUtils]: 10: Hoare triple {1163#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {1203#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:13:21,906 INFO L290 TraceCheckUtils]: 11: Hoare triple {1203#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {1207#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:13:21,906 INFO L290 TraceCheckUtils]: 12: Hoare triple {1207#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {1156#false} is VALID [2022-04-15 06:13:21,906 INFO L290 TraceCheckUtils]: 13: Hoare triple {1156#false} assume !false; {1156#false} is VALID [2022-04-15 06:13:21,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:21,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:13:22,480 INFO L290 TraceCheckUtils]: 13: Hoare triple {1156#false} assume !false; {1156#false} is VALID [2022-04-15 06:13:22,481 INFO L290 TraceCheckUtils]: 12: Hoare triple {1207#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {1156#false} is VALID [2022-04-15 06:13:22,481 INFO L290 TraceCheckUtils]: 11: Hoare triple {1203#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {1207#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:13:22,482 INFO L272 TraceCheckUtils]: 10: Hoare triple {1163#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {1203#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:13:22,482 INFO L290 TraceCheckUtils]: 9: Hoare triple {1226#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [73] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {1163#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:22,484 INFO L290 TraceCheckUtils]: 8: Hoare triple {1230#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [76] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_78 v_main_~x~0_77)) (.cse1 (<= 50 v_main_~x~0_78))) (or (and .cse0 (= v_main_~y~0_40 v_main_~y~0_39)) (and (= v_main_~y~0_39 v_main_~y~0_40) .cse0 (or (not (< v_main_~x~0_78 100)) (not .cse1))) (let ((.cse2 (+ v_main_~x~0_78 v_main_~y~0_39))) (and (< .cse2 (+ 101 v_main_~y~0_40)) (< v_main_~y~0_40 v_main_~y~0_39) (= (+ v_main_~x~0_77 v_main_~y~0_40) .cse2) .cse1)))) InVars {main_~x~0=v_main_~x~0_78, main_~y~0=v_main_~y~0_40} OutVars{main_~x~0=v_main_~x~0_77, main_~y~0=v_main_~y~0_39} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {1226#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:13:22,484 INFO L290 TraceCheckUtils]: 7: Hoare triple {1230#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [75] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1230#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:13:22,485 INFO L290 TraceCheckUtils]: 6: Hoare triple {1237#(and (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)) (or (and (< main_~x~0 (+ main_~y~0 1)) (<= 50 main_~y~0)) (<= 99 main_~y~0)))} [74] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_76 v_main_~x~0_75))) (or .cse0 (and (< v_main_~x~0_76 v_main_~x~0_75) (< v_main_~x~0_75 51)) (and .cse0 (not (< v_main_~x~0_76 50))))) InVars {main_~x~0=v_main_~x~0_76} OutVars{main_~x~0=v_main_~x~0_75} AuxVars[] AssignedVars[main_~x~0] {1230#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:13:22,486 INFO L290 TraceCheckUtils]: 5: Hoare triple {1155#true} ~x~0 := 0;~y~0 := 50; {1237#(and (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)) (or (and (< main_~x~0 (+ main_~y~0 1)) (<= 50 main_~y~0)) (<= 99 main_~y~0)))} is VALID [2022-04-15 06:13:22,486 INFO L272 TraceCheckUtils]: 4: Hoare triple {1155#true} call #t~ret1 := main(); {1155#true} is VALID [2022-04-15 06:13:22,486 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1155#true} {1155#true} #56#return; {1155#true} is VALID [2022-04-15 06:13:22,486 INFO L290 TraceCheckUtils]: 2: Hoare triple {1155#true} assume true; {1155#true} is VALID [2022-04-15 06:13:22,487 INFO L290 TraceCheckUtils]: 1: Hoare triple {1155#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {1155#true} is VALID [2022-04-15 06:13:22,487 INFO L272 TraceCheckUtils]: 0: Hoare triple {1155#true} call ULTIMATE.init(); {1155#true} is VALID [2022-04-15 06:13:22,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:22,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849691984] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:13:22,487 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:13:22,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:13:22,741 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:13:22,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [891182266] [2022-04-15 06:13:22,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [891182266] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:13:22,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:13:22,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-15 06:13:22,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634099812] [2022-04-15 06:13:22,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:13:22,742 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-04-15 06:13:22,742 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:13:22,743 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:22,759 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 21 edges. 21 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:22,759 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-15 06:13:22,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:13:22,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-15 06:13:22,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2022-04-15 06:13:22,760 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:23,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:23,182 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2022-04-15 06:13:23,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-15 06:13:23,182 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-04-15 06:13:23,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:13:23,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:23,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 37 transitions. [2022-04-15 06:13:23,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:23,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 37 transitions. [2022-04-15 06:13:23,185 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 9 states and 37 transitions. [2022-04-15 06:13:23,220 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 37 edges. 37 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:23,220 INFO L225 Difference]: With dead ends: 32 [2022-04-15 06:13:23,220 INFO L226 Difference]: Without dead ends: 25 [2022-04-15 06:13:23,221 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=635, Unknown=0, NotChecked=0, Total=812 [2022-04-15 06:13:23,222 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-15 06:13:23,222 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 58 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-15 06:13:23,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-04-15 06:13:23,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-04-15 06:13:23,259 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:13:23,259 INFO L82 GeneralOperation]: Start isEquivalent. First operand 25 states. Second operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:23,260 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:23,260 INFO L87 Difference]: Start difference. First operand 25 states. Second operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:23,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:23,261 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-15 06:13:23,261 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-15 06:13:23,261 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:13:23,261 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:13:23,261 INFO L74 IsIncluded]: Start isIncluded. First operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 25 states. [2022-04-15 06:13:23,261 INFO L87 Difference]: Start difference. First operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 25 states. [2022-04-15 06:13:23,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:23,263 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-15 06:13:23,263 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-15 06:13:23,263 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:13:23,263 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:13:23,263 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:13:23,263 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:13:23,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:23,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-04-15 06:13:23,264 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2022-04-15 06:13:23,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:13:23,264 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-04-15 06:13:23,265 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:23,265 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 25 states and 27 transitions. [2022-04-15 06:13:23,309 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:23,310 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-15 06:13:23,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-15 06:13:23,313 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:13:23,313 INFO L499 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:13:23,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-15 06:13:23,527 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:13:23,527 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:13:23,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:13:23,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1158550074, now seen corresponding path program 5 times [2022-04-15 06:13:23,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:13:23,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1467046795] [2022-04-15 06:13:23,641 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:13:23,998 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:13:24,000 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:13:24,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1430948148, now seen corresponding path program 1 times [2022-04-15 06:13:24,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:13:24,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145602307] [2022-04-15 06:13:24,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:13:24,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:13:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:24,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:13:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:24,140 INFO L290 TraceCheckUtils]: 0: Hoare triple {1451#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {1440#true} is VALID [2022-04-15 06:13:24,140 INFO L290 TraceCheckUtils]: 1: Hoare triple {1440#true} assume true; {1440#true} is VALID [2022-04-15 06:13:24,141 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {1440#true} {1440#true} #56#return; {1440#true} is VALID [2022-04-15 06:13:24,141 INFO L272 TraceCheckUtils]: 0: Hoare triple {1440#true} call ULTIMATE.init(); {1451#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:13:24,141 INFO L290 TraceCheckUtils]: 1: Hoare triple {1451#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {1440#true} is VALID [2022-04-15 06:13:24,141 INFO L290 TraceCheckUtils]: 2: Hoare triple {1440#true} assume true; {1440#true} is VALID [2022-04-15 06:13:24,141 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1440#true} {1440#true} #56#return; {1440#true} is VALID [2022-04-15 06:13:24,142 INFO L272 TraceCheckUtils]: 4: Hoare triple {1440#true} call #t~ret1 := main(); {1440#true} is VALID [2022-04-15 06:13:24,142 INFO L290 TraceCheckUtils]: 5: Hoare triple {1440#true} ~x~0 := 0;~y~0 := 50; {1445#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:24,143 INFO L290 TraceCheckUtils]: 6: Hoare triple {1445#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [78] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_98 v_main_~x~0_97))) (or .cse0 (and .cse0 (<= 50 v_main_~x~0_98)) (and (< v_main_~x~0_97 51) (< v_main_~x~0_98 v_main_~x~0_97)))) InVars {main_~x~0=v_main_~x~0_98} OutVars{main_~x~0=v_main_~x~0_97} AuxVars[] AssignedVars[main_~x~0] {1446#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:24,144 INFO L290 TraceCheckUtils]: 7: Hoare triple {1446#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [79] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1446#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:24,144 INFO L290 TraceCheckUtils]: 8: Hoare triple {1446#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [80] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_53 v_main_~y~0_52)) (.cse1 (= v_main_~x~0_100 v_main_~x~0_99)) (.cse2 (<= 50 v_main_~x~0_100))) (or (and .cse0 .cse1) (and (or (not .cse2) (not (< v_main_~x~0_100 100))) .cse0 .cse1) (and .cse2 (< v_main_~x~0_100 v_main_~x~0_99) (< v_main_~x~0_99 101) (= (+ v_main_~x~0_99 v_main_~y~0_53) (+ v_main_~x~0_100 v_main_~y~0_52))))) InVars {main_~x~0=v_main_~x~0_100, main_~y~0=v_main_~y~0_53} OutVars{main_~x~0=v_main_~x~0_99, main_~y~0=v_main_~y~0_52} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {1447#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:13:24,145 INFO L290 TraceCheckUtils]: 9: Hoare triple {1447#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [77] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {1448#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:24,146 INFO L272 TraceCheckUtils]: 10: Hoare triple {1448#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {1449#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:13:24,146 INFO L290 TraceCheckUtils]: 11: Hoare triple {1449#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {1450#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:13:24,147 INFO L290 TraceCheckUtils]: 12: Hoare triple {1450#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {1441#false} is VALID [2022-04-15 06:13:24,147 INFO L290 TraceCheckUtils]: 13: Hoare triple {1441#false} assume !false; {1441#false} is VALID [2022-04-15 06:13:24,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:24,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:13:24,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145602307] [2022-04-15 06:13:24,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145602307] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:13:24,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000852192] [2022-04-15 06:13:24,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:13:24,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:13:24,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:13:24,152 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:13:24,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-15 06:13:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:24,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:13:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:24,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:13:24,495 INFO L272 TraceCheckUtils]: 0: Hoare triple {1440#true} call ULTIMATE.init(); {1440#true} is VALID [2022-04-15 06:13:24,495 INFO L290 TraceCheckUtils]: 1: Hoare triple {1440#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {1440#true} is VALID [2022-04-15 06:13:24,496 INFO L290 TraceCheckUtils]: 2: Hoare triple {1440#true} assume true; {1440#true} is VALID [2022-04-15 06:13:24,496 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1440#true} {1440#true} #56#return; {1440#true} is VALID [2022-04-15 06:13:24,496 INFO L272 TraceCheckUtils]: 4: Hoare triple {1440#true} call #t~ret1 := main(); {1440#true} is VALID [2022-04-15 06:13:24,501 INFO L290 TraceCheckUtils]: 5: Hoare triple {1440#true} ~x~0 := 0;~y~0 := 50; {1470#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:13:24,502 INFO L290 TraceCheckUtils]: 6: Hoare triple {1470#(and (<= main_~x~0 0) (= main_~y~0 50))} [78] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_98 v_main_~x~0_97))) (or .cse0 (and .cse0 (<= 50 v_main_~x~0_98)) (and (< v_main_~x~0_97 51) (< v_main_~x~0_98 v_main_~x~0_97)))) InVars {main_~x~0=v_main_~x~0_98} OutVars{main_~x~0=v_main_~x~0_97} AuxVars[] AssignedVars[main_~x~0] {1474#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:13:24,502 INFO L290 TraceCheckUtils]: 7: Hoare triple {1474#(and (= main_~y~0 50) (< main_~x~0 51))} [79] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1474#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:13:24,503 INFO L290 TraceCheckUtils]: 8: Hoare triple {1474#(and (= main_~y~0 50) (< main_~x~0 51))} [80] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_53 v_main_~y~0_52)) (.cse1 (= v_main_~x~0_100 v_main_~x~0_99)) (.cse2 (<= 50 v_main_~x~0_100))) (or (and .cse0 .cse1) (and (or (not .cse2) (not (< v_main_~x~0_100 100))) .cse0 .cse1) (and .cse2 (< v_main_~x~0_100 v_main_~x~0_99) (< v_main_~x~0_99 101) (= (+ v_main_~x~0_99 v_main_~y~0_53) (+ v_main_~x~0_100 v_main_~y~0_52))))) InVars {main_~x~0=v_main_~x~0_100, main_~y~0=v_main_~y~0_53} OutVars{main_~x~0=v_main_~x~0_99, main_~y~0=v_main_~y~0_52} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {1481#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:13:24,510 INFO L290 TraceCheckUtils]: 9: Hoare triple {1481#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [77] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {1448#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:24,511 INFO L272 TraceCheckUtils]: 10: Hoare triple {1448#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {1488#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:13:24,512 INFO L290 TraceCheckUtils]: 11: Hoare triple {1488#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {1492#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:13:24,512 INFO L290 TraceCheckUtils]: 12: Hoare triple {1492#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {1441#false} is VALID [2022-04-15 06:13:24,512 INFO L290 TraceCheckUtils]: 13: Hoare triple {1441#false} assume !false; {1441#false} is VALID [2022-04-15 06:13:24,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:24,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:13:25,017 INFO L290 TraceCheckUtils]: 13: Hoare triple {1441#false} assume !false; {1441#false} is VALID [2022-04-15 06:13:25,020 INFO L290 TraceCheckUtils]: 12: Hoare triple {1492#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {1441#false} is VALID [2022-04-15 06:13:25,020 INFO L290 TraceCheckUtils]: 11: Hoare triple {1488#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {1492#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:13:25,021 INFO L272 TraceCheckUtils]: 10: Hoare triple {1448#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {1488#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:13:25,021 INFO L290 TraceCheckUtils]: 9: Hoare triple {1511#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [77] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {1448#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:25,022 INFO L290 TraceCheckUtils]: 8: Hoare triple {1515#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (< main_~x~0 (+ main_~y~0 1)) (not (<= 50 main_~x~0)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [80] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_53 v_main_~y~0_52)) (.cse1 (= v_main_~x~0_100 v_main_~x~0_99)) (.cse2 (<= 50 v_main_~x~0_100))) (or (and .cse0 .cse1) (and (or (not .cse2) (not (< v_main_~x~0_100 100))) .cse0 .cse1) (and .cse2 (< v_main_~x~0_100 v_main_~x~0_99) (< v_main_~x~0_99 101) (= (+ v_main_~x~0_99 v_main_~y~0_53) (+ v_main_~x~0_100 v_main_~y~0_52))))) InVars {main_~x~0=v_main_~x~0_100, main_~y~0=v_main_~y~0_53} OutVars{main_~x~0=v_main_~x~0_99, main_~y~0=v_main_~y~0_52} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {1511#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:13:25,023 INFO L290 TraceCheckUtils]: 7: Hoare triple {1515#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (< main_~x~0 (+ main_~y~0 1)) (not (<= 50 main_~x~0)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [79] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1515#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (< main_~x~0 (+ main_~y~0 1)) (not (<= 50 main_~x~0)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:13:25,024 INFO L290 TraceCheckUtils]: 6: Hoare triple {1522#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= 50 main_~y~0) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [78] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_98 v_main_~x~0_97))) (or .cse0 (and .cse0 (<= 50 v_main_~x~0_98)) (and (< v_main_~x~0_97 51) (< v_main_~x~0_98 v_main_~x~0_97)))) InVars {main_~x~0=v_main_~x~0_98} OutVars{main_~x~0=v_main_~x~0_97} AuxVars[] AssignedVars[main_~x~0] {1515#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (< main_~x~0 (+ main_~y~0 1)) (not (<= 50 main_~x~0)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:13:25,024 INFO L290 TraceCheckUtils]: 5: Hoare triple {1440#true} ~x~0 := 0;~y~0 := 50; {1522#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= 50 main_~y~0) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:13:25,024 INFO L272 TraceCheckUtils]: 4: Hoare triple {1440#true} call #t~ret1 := main(); {1440#true} is VALID [2022-04-15 06:13:25,024 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1440#true} {1440#true} #56#return; {1440#true} is VALID [2022-04-15 06:13:25,024 INFO L290 TraceCheckUtils]: 2: Hoare triple {1440#true} assume true; {1440#true} is VALID [2022-04-15 06:13:25,024 INFO L290 TraceCheckUtils]: 1: Hoare triple {1440#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {1440#true} is VALID [2022-04-15 06:13:25,025 INFO L272 TraceCheckUtils]: 0: Hoare triple {1440#true} call ULTIMATE.init(); {1440#true} is VALID [2022-04-15 06:13:25,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:25,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000852192] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:13:25,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:13:25,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:13:25,282 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:13:25,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1467046795] [2022-04-15 06:13:25,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1467046795] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:13:25,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:13:25,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-15 06:13:25,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688737299] [2022-04-15 06:13:25,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:13:25,283 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 11 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-04-15 06:13:25,283 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:13:25,283 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 13 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 11 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:25,302 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:25,303 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-15 06:13:25,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:13:25,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-15 06:13:25,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2022-04-15 06:13:25,304 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 13 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 11 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:25,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:25,961 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-04-15 06:13:25,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-15 06:13:25,961 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 11 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-04-15 06:13:25,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:13:25,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 11 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:25,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 39 transitions. [2022-04-15 06:13:25,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 11 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:25,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 39 transitions. [2022-04-15 06:13:25,964 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 10 states and 39 transitions. [2022-04-15 06:13:26,000 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 39 edges. 39 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:26,001 INFO L225 Difference]: With dead ends: 34 [2022-04-15 06:13:26,001 INFO L226 Difference]: Without dead ends: 27 [2022-04-15 06:13:26,001 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=193, Invalid=737, Unknown=0, NotChecked=0, Total=930 [2022-04-15 06:13:26,002 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-15 06:13:26,002 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 63 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-15 06:13:26,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-04-15 06:13:26,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-04-15 06:13:26,034 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:13:26,034 INFO L82 GeneralOperation]: Start isEquivalent. First operand 27 states. Second operand has 27 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:26,035 INFO L74 IsIncluded]: Start isIncluded. First operand 27 states. Second operand has 27 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:26,035 INFO L87 Difference]: Start difference. First operand 27 states. Second operand has 27 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:26,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:26,036 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-04-15 06:13:26,036 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2022-04-15 06:13:26,036 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:13:26,036 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:13:26,036 INFO L74 IsIncluded]: Start isIncluded. First operand has 27 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 27 states. [2022-04-15 06:13:26,037 INFO L87 Difference]: Start difference. First operand has 27 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 27 states. [2022-04-15 06:13:26,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:26,037 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-04-15 06:13:26,038 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2022-04-15 06:13:26,038 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:13:26,038 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:13:26,038 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:13:26,038 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:13:26,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:26,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2022-04-15 06:13:26,039 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 23 [2022-04-15 06:13:26,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:13:26,039 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2022-04-15 06:13:26,039 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 11 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:26,039 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 27 states and 29 transitions. [2022-04-15 06:13:26,067 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 29 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:26,068 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2022-04-15 06:13:26,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-04-15 06:13:26,068 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:13:26,068 INFO L499 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:13:26,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-15 06:13:26,269 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:13:26,269 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:13:26,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:13:26,270 INFO L85 PathProgramCache]: Analyzing trace with hash 2039763733, now seen corresponding path program 6 times [2022-04-15 06:13:26,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:13:26,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1727396062] [2022-04-15 06:13:26,400 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:13:26,967 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:13:26,969 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:13:26,971 INFO L85 PathProgramCache]: Analyzing trace with hash 618584012, now seen corresponding path program 1 times [2022-04-15 06:13:26,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:13:26,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935478129] [2022-04-15 06:13:26,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:13:26,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:13:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:27,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:13:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:27,129 INFO L290 TraceCheckUtils]: 0: Hoare triple {1751#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {1740#true} is VALID [2022-04-15 06:13:27,129 INFO L290 TraceCheckUtils]: 1: Hoare triple {1740#true} assume true; {1740#true} is VALID [2022-04-15 06:13:27,130 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {1740#true} {1740#true} #56#return; {1740#true} is VALID [2022-04-15 06:13:27,130 INFO L272 TraceCheckUtils]: 0: Hoare triple {1740#true} call ULTIMATE.init(); {1751#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:13:27,130 INFO L290 TraceCheckUtils]: 1: Hoare triple {1751#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {1740#true} is VALID [2022-04-15 06:13:27,130 INFO L290 TraceCheckUtils]: 2: Hoare triple {1740#true} assume true; {1740#true} is VALID [2022-04-15 06:13:27,130 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1740#true} {1740#true} #56#return; {1740#true} is VALID [2022-04-15 06:13:27,131 INFO L272 TraceCheckUtils]: 4: Hoare triple {1740#true} call #t~ret1 := main(); {1740#true} is VALID [2022-04-15 06:13:27,131 INFO L290 TraceCheckUtils]: 5: Hoare triple {1740#true} ~x~0 := 0;~y~0 := 50; {1745#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:27,132 INFO L290 TraceCheckUtils]: 6: Hoare triple {1745#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [82] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_121 v_main_~x~0_120))) (or (and (not (< v_main_~x~0_121 50)) .cse0) (and (< v_main_~x~0_121 v_main_~x~0_120) (< v_main_~x~0_120 51)) .cse0)) InVars {main_~x~0=v_main_~x~0_121} OutVars{main_~x~0=v_main_~x~0_120} AuxVars[] AssignedVars[main_~x~0] {1746#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:13:27,132 INFO L290 TraceCheckUtils]: 7: Hoare triple {1746#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [83] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1746#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:13:27,134 INFO L290 TraceCheckUtils]: 8: Hoare triple {1746#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [84] L28-2-->L27-2_primed: Formula: (let ((.cse2 (<= 50 v_main_~x~0_123)) (.cse0 (= v_main_~y~0_67 v_main_~y~0_66)) (.cse1 (= v_main_~x~0_123 v_main_~x~0_122))) (or (and .cse0 .cse1 (or (not .cse2) (not (< v_main_~x~0_123 100)))) (and .cse2 (< v_main_~x~0_122 101) (= (+ v_main_~x~0_123 v_main_~y~0_66) (+ v_main_~x~0_122 v_main_~y~0_67)) (< v_main_~x~0_123 v_main_~x~0_122)) (and .cse0 .cse1))) InVars {main_~x~0=v_main_~x~0_123, main_~y~0=v_main_~y~0_67} OutVars{main_~x~0=v_main_~x~0_122, main_~y~0=v_main_~y~0_66} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {1747#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:13:27,134 INFO L290 TraceCheckUtils]: 9: Hoare triple {1747#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [81] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {1748#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:27,135 INFO L272 TraceCheckUtils]: 10: Hoare triple {1748#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {1749#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:13:27,135 INFO L290 TraceCheckUtils]: 11: Hoare triple {1749#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {1750#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:13:27,136 INFO L290 TraceCheckUtils]: 12: Hoare triple {1750#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {1741#false} is VALID [2022-04-15 06:13:27,136 INFO L290 TraceCheckUtils]: 13: Hoare triple {1741#false} assume !false; {1741#false} is VALID [2022-04-15 06:13:27,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:27,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:13:27,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935478129] [2022-04-15 06:13:27,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935478129] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:13:27,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004127414] [2022-04-15 06:13:27,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:13:27,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:13:27,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:13:27,138 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:13:27,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-15 06:13:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:27,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:13:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:27,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:13:27,605 INFO L272 TraceCheckUtils]: 0: Hoare triple {1740#true} call ULTIMATE.init(); {1740#true} is VALID [2022-04-15 06:13:27,606 INFO L290 TraceCheckUtils]: 1: Hoare triple {1740#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {1740#true} is VALID [2022-04-15 06:13:27,606 INFO L290 TraceCheckUtils]: 2: Hoare triple {1740#true} assume true; {1740#true} is VALID [2022-04-15 06:13:27,606 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1740#true} {1740#true} #56#return; {1740#true} is VALID [2022-04-15 06:13:27,606 INFO L272 TraceCheckUtils]: 4: Hoare triple {1740#true} call #t~ret1 := main(); {1740#true} is VALID [2022-04-15 06:13:27,606 INFO L290 TraceCheckUtils]: 5: Hoare triple {1740#true} ~x~0 := 0;~y~0 := 50; {1770#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:13:27,607 INFO L290 TraceCheckUtils]: 6: Hoare triple {1770#(and (<= main_~x~0 0) (= main_~y~0 50))} [82] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_121 v_main_~x~0_120))) (or (and (not (< v_main_~x~0_121 50)) .cse0) (and (< v_main_~x~0_121 v_main_~x~0_120) (< v_main_~x~0_120 51)) .cse0)) InVars {main_~x~0=v_main_~x~0_121} OutVars{main_~x~0=v_main_~x~0_120} AuxVars[] AssignedVars[main_~x~0] {1774#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:13:27,608 INFO L290 TraceCheckUtils]: 7: Hoare triple {1774#(and (= main_~y~0 50) (< main_~x~0 51))} [83] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1774#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:13:27,609 INFO L290 TraceCheckUtils]: 8: Hoare triple {1774#(and (= main_~y~0 50) (< main_~x~0 51))} [84] L28-2-->L27-2_primed: Formula: (let ((.cse2 (<= 50 v_main_~x~0_123)) (.cse0 (= v_main_~y~0_67 v_main_~y~0_66)) (.cse1 (= v_main_~x~0_123 v_main_~x~0_122))) (or (and .cse0 .cse1 (or (not .cse2) (not (< v_main_~x~0_123 100)))) (and .cse2 (< v_main_~x~0_122 101) (= (+ v_main_~x~0_123 v_main_~y~0_66) (+ v_main_~x~0_122 v_main_~y~0_67)) (< v_main_~x~0_123 v_main_~x~0_122)) (and .cse0 .cse1))) InVars {main_~x~0=v_main_~x~0_123, main_~y~0=v_main_~y~0_67} OutVars{main_~x~0=v_main_~x~0_122, main_~y~0=v_main_~y~0_66} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {1781#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:13:27,609 INFO L290 TraceCheckUtils]: 9: Hoare triple {1781#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [81] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {1748#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:27,610 INFO L272 TraceCheckUtils]: 10: Hoare triple {1748#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {1788#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:13:27,611 INFO L290 TraceCheckUtils]: 11: Hoare triple {1788#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {1792#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:13:27,611 INFO L290 TraceCheckUtils]: 12: Hoare triple {1792#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {1741#false} is VALID [2022-04-15 06:13:27,612 INFO L290 TraceCheckUtils]: 13: Hoare triple {1741#false} assume !false; {1741#false} is VALID [2022-04-15 06:13:27,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:27,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:13:28,280 INFO L290 TraceCheckUtils]: 13: Hoare triple {1741#false} assume !false; {1741#false} is VALID [2022-04-15 06:13:28,281 INFO L290 TraceCheckUtils]: 12: Hoare triple {1792#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {1741#false} is VALID [2022-04-15 06:13:28,282 INFO L290 TraceCheckUtils]: 11: Hoare triple {1788#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {1792#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:13:28,282 INFO L272 TraceCheckUtils]: 10: Hoare triple {1748#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {1788#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:13:28,283 INFO L290 TraceCheckUtils]: 9: Hoare triple {1811#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [81] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {1748#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:28,284 INFO L290 TraceCheckUtils]: 8: Hoare triple {1815#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [84] L28-2-->L27-2_primed: Formula: (let ((.cse2 (<= 50 v_main_~x~0_123)) (.cse0 (= v_main_~y~0_67 v_main_~y~0_66)) (.cse1 (= v_main_~x~0_123 v_main_~x~0_122))) (or (and .cse0 .cse1 (or (not .cse2) (not (< v_main_~x~0_123 100)))) (and .cse2 (< v_main_~x~0_122 101) (= (+ v_main_~x~0_123 v_main_~y~0_66) (+ v_main_~x~0_122 v_main_~y~0_67)) (< v_main_~x~0_123 v_main_~x~0_122)) (and .cse0 .cse1))) InVars {main_~x~0=v_main_~x~0_123, main_~y~0=v_main_~y~0_67} OutVars{main_~x~0=v_main_~x~0_122, main_~y~0=v_main_~y~0_66} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {1811#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:13:28,285 INFO L290 TraceCheckUtils]: 7: Hoare triple {1815#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [83] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1815#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:13:28,286 INFO L290 TraceCheckUtils]: 6: Hoare triple {1822#(and (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)) (or (and (< main_~x~0 (+ main_~y~0 1)) (<= 50 main_~y~0)) (<= 99 main_~y~0)))} [82] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_121 v_main_~x~0_120))) (or (and (not (< v_main_~x~0_121 50)) .cse0) (and (< v_main_~x~0_121 v_main_~x~0_120) (< v_main_~x~0_120 51)) .cse0)) InVars {main_~x~0=v_main_~x~0_121} OutVars{main_~x~0=v_main_~x~0_120} AuxVars[] AssignedVars[main_~x~0] {1815#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:13:28,287 INFO L290 TraceCheckUtils]: 5: Hoare triple {1740#true} ~x~0 := 0;~y~0 := 50; {1822#(and (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)) (or (and (< main_~x~0 (+ main_~y~0 1)) (<= 50 main_~y~0)) (<= 99 main_~y~0)))} is VALID [2022-04-15 06:13:28,288 INFO L272 TraceCheckUtils]: 4: Hoare triple {1740#true} call #t~ret1 := main(); {1740#true} is VALID [2022-04-15 06:13:28,288 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1740#true} {1740#true} #56#return; {1740#true} is VALID [2022-04-15 06:13:28,288 INFO L290 TraceCheckUtils]: 2: Hoare triple {1740#true} assume true; {1740#true} is VALID [2022-04-15 06:13:28,288 INFO L290 TraceCheckUtils]: 1: Hoare triple {1740#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {1740#true} is VALID [2022-04-15 06:13:28,288 INFO L272 TraceCheckUtils]: 0: Hoare triple {1740#true} call ULTIMATE.init(); {1740#true} is VALID [2022-04-15 06:13:28,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:28,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004127414] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:13:28,288 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:13:28,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:13:28,673 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:13:28,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1727396062] [2022-04-15 06:13:28,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1727396062] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:13:28,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:13:28,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-15 06:13:28,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892307744] [2022-04-15 06:13:28,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:13:28,674 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-04-15 06:13:28,674 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:13:28,674 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:28,697 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 25 edges. 25 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:28,698 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-15 06:13:28,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:13:28,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-15 06:13:28,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2022-04-15 06:13:28,699 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:29,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:29,584 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-04-15 06:13:29,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-15 06:13:29,585 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-04-15 06:13:29,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:13:29,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:29,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 41 transitions. [2022-04-15 06:13:29,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:29,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 41 transitions. [2022-04-15 06:13:29,588 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 11 states and 41 transitions. [2022-04-15 06:13:29,646 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:29,647 INFO L225 Difference]: With dead ends: 36 [2022-04-15 06:13:29,647 INFO L226 Difference]: Without dead ends: 29 [2022-04-15 06:13:29,647 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=209, Invalid=847, Unknown=0, NotChecked=0, Total=1056 [2022-04-15 06:13:29,648 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-15 06:13:29,648 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 68 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-15 06:13:29,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-04-15 06:13:29,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-04-15 06:13:29,690 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:13:29,690 INFO L82 GeneralOperation]: Start isEquivalent. First operand 29 states. Second operand has 29 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:29,691 INFO L74 IsIncluded]: Start isIncluded. First operand 29 states. Second operand has 29 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:29,691 INFO L87 Difference]: Start difference. First operand 29 states. Second operand has 29 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:29,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:29,692 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2022-04-15 06:13:29,692 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2022-04-15 06:13:29,692 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:13:29,692 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:13:29,692 INFO L74 IsIncluded]: Start isIncluded. First operand has 29 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 29 states. [2022-04-15 06:13:29,692 INFO L87 Difference]: Start difference. First operand has 29 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 29 states. [2022-04-15 06:13:29,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:29,693 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2022-04-15 06:13:29,693 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2022-04-15 06:13:29,693 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:13:29,694 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:13:29,694 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:13:29,694 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:13:29,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:29,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2022-04-15 06:13:29,695 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 25 [2022-04-15 06:13:29,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:13:29,695 INFO L478 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2022-04-15 06:13:29,695 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:29,695 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 29 states and 31 transitions. [2022-04-15 06:13:29,755 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:29,755 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2022-04-15 06:13:29,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-04-15 06:13:29,756 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:13:29,756 INFO L499 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:13:29,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-15 06:13:29,956 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:13:29,957 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:13:29,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:13:29,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1517434576, now seen corresponding path program 7 times [2022-04-15 06:13:29,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:13:29,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1781061005] [2022-04-15 06:13:30,075 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:13:30,363 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:13:30,364 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:13:30,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1626851124, now seen corresponding path program 1 times [2022-04-15 06:13:30,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:13:30,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465798966] [2022-04-15 06:13:30,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:13:30,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:13:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:30,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:13:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:30,528 INFO L290 TraceCheckUtils]: 0: Hoare triple {2066#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {2055#true} is VALID [2022-04-15 06:13:30,528 INFO L290 TraceCheckUtils]: 1: Hoare triple {2055#true} assume true; {2055#true} is VALID [2022-04-15 06:13:30,528 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {2055#true} {2055#true} #56#return; {2055#true} is VALID [2022-04-15 06:13:30,529 INFO L272 TraceCheckUtils]: 0: Hoare triple {2055#true} call ULTIMATE.init(); {2066#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:13:30,529 INFO L290 TraceCheckUtils]: 1: Hoare triple {2066#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {2055#true} is VALID [2022-04-15 06:13:30,529 INFO L290 TraceCheckUtils]: 2: Hoare triple {2055#true} assume true; {2055#true} is VALID [2022-04-15 06:13:30,529 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2055#true} {2055#true} #56#return; {2055#true} is VALID [2022-04-15 06:13:30,529 INFO L272 TraceCheckUtils]: 4: Hoare triple {2055#true} call #t~ret1 := main(); {2055#true} is VALID [2022-04-15 06:13:30,530 INFO L290 TraceCheckUtils]: 5: Hoare triple {2055#true} ~x~0 := 0;~y~0 := 50; {2060#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:30,531 INFO L290 TraceCheckUtils]: 6: Hoare triple {2060#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [86] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_145 v_main_~x~0_144))) (or (and (< v_main_~x~0_145 v_main_~x~0_144) (< v_main_~x~0_144 51)) .cse0 (and .cse0 (not (< v_main_~x~0_145 50))))) InVars {main_~x~0=v_main_~x~0_145} OutVars{main_~x~0=v_main_~x~0_144} AuxVars[] AssignedVars[main_~x~0] {2061#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:30,531 INFO L290 TraceCheckUtils]: 7: Hoare triple {2061#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [87] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2061#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:30,532 INFO L290 TraceCheckUtils]: 8: Hoare triple {2061#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [88] L28-2-->L27-2_primed: Formula: (let ((.cse2 (<= 50 v_main_~x~0_147)) (.cse0 (= v_main_~y~0_82 v_main_~y~0_81)) (.cse1 (= v_main_~x~0_147 v_main_~x~0_146))) (or (and .cse0 .cse1) (and .cse2 (< v_main_~x~0_146 101) (< v_main_~x~0_147 v_main_~x~0_146) (= (+ v_main_~x~0_146 v_main_~y~0_82) (+ v_main_~x~0_147 v_main_~y~0_81))) (and (or (not .cse2) (not (< v_main_~x~0_147 100))) .cse0 .cse1))) InVars {main_~x~0=v_main_~x~0_147, main_~y~0=v_main_~y~0_82} OutVars{main_~x~0=v_main_~x~0_146, main_~y~0=v_main_~y~0_81} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {2062#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:13:30,533 INFO L290 TraceCheckUtils]: 9: Hoare triple {2062#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [85] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {2063#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:30,533 INFO L272 TraceCheckUtils]: 10: Hoare triple {2063#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {2064#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:13:30,534 INFO L290 TraceCheckUtils]: 11: Hoare triple {2064#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {2065#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:13:30,534 INFO L290 TraceCheckUtils]: 12: Hoare triple {2065#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {2056#false} is VALID [2022-04-15 06:13:30,534 INFO L290 TraceCheckUtils]: 13: Hoare triple {2056#false} assume !false; {2056#false} is VALID [2022-04-15 06:13:30,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:30,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:13:30,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465798966] [2022-04-15 06:13:30,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465798966] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:13:30,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523285530] [2022-04-15 06:13:30,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:13:30,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:13:30,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:13:30,537 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:13:30,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-15 06:13:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:30,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:13:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:30,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:13:31,066 INFO L272 TraceCheckUtils]: 0: Hoare triple {2055#true} call ULTIMATE.init(); {2055#true} is VALID [2022-04-15 06:13:31,067 INFO L290 TraceCheckUtils]: 1: Hoare triple {2055#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {2055#true} is VALID [2022-04-15 06:13:31,067 INFO L290 TraceCheckUtils]: 2: Hoare triple {2055#true} assume true; {2055#true} is VALID [2022-04-15 06:13:31,067 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2055#true} {2055#true} #56#return; {2055#true} is VALID [2022-04-15 06:13:31,067 INFO L272 TraceCheckUtils]: 4: Hoare triple {2055#true} call #t~ret1 := main(); {2055#true} is VALID [2022-04-15 06:13:31,070 INFO L290 TraceCheckUtils]: 5: Hoare triple {2055#true} ~x~0 := 0;~y~0 := 50; {2085#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:13:31,071 INFO L290 TraceCheckUtils]: 6: Hoare triple {2085#(and (<= main_~x~0 0) (= main_~y~0 50))} [86] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_145 v_main_~x~0_144))) (or (and (< v_main_~x~0_145 v_main_~x~0_144) (< v_main_~x~0_144 51)) .cse0 (and .cse0 (not (< v_main_~x~0_145 50))))) InVars {main_~x~0=v_main_~x~0_145} OutVars{main_~x~0=v_main_~x~0_144} AuxVars[] AssignedVars[main_~x~0] {2089#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:13:31,071 INFO L290 TraceCheckUtils]: 7: Hoare triple {2089#(and (= main_~y~0 50) (< main_~x~0 51))} [87] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2089#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:13:31,072 INFO L290 TraceCheckUtils]: 8: Hoare triple {2089#(and (= main_~y~0 50) (< main_~x~0 51))} [88] L28-2-->L27-2_primed: Formula: (let ((.cse2 (<= 50 v_main_~x~0_147)) (.cse0 (= v_main_~y~0_82 v_main_~y~0_81)) (.cse1 (= v_main_~x~0_147 v_main_~x~0_146))) (or (and .cse0 .cse1) (and .cse2 (< v_main_~x~0_146 101) (< v_main_~x~0_147 v_main_~x~0_146) (= (+ v_main_~x~0_146 v_main_~y~0_82) (+ v_main_~x~0_147 v_main_~y~0_81))) (and (or (not .cse2) (not (< v_main_~x~0_147 100))) .cse0 .cse1))) InVars {main_~x~0=v_main_~x~0_147, main_~y~0=v_main_~y~0_82} OutVars{main_~x~0=v_main_~x~0_146, main_~y~0=v_main_~y~0_81} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {2096#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:13:31,073 INFO L290 TraceCheckUtils]: 9: Hoare triple {2096#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [85] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {2063#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:31,074 INFO L272 TraceCheckUtils]: 10: Hoare triple {2063#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {2103#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:13:31,074 INFO L290 TraceCheckUtils]: 11: Hoare triple {2103#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {2107#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:13:31,074 INFO L290 TraceCheckUtils]: 12: Hoare triple {2107#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {2056#false} is VALID [2022-04-15 06:13:31,075 INFO L290 TraceCheckUtils]: 13: Hoare triple {2056#false} assume !false; {2056#false} is VALID [2022-04-15 06:13:31,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:31,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:13:31,640 INFO L290 TraceCheckUtils]: 13: Hoare triple {2056#false} assume !false; {2056#false} is VALID [2022-04-15 06:13:31,642 INFO L290 TraceCheckUtils]: 12: Hoare triple {2107#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {2056#false} is VALID [2022-04-15 06:13:31,642 INFO L290 TraceCheckUtils]: 11: Hoare triple {2103#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {2107#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:13:31,643 INFO L272 TraceCheckUtils]: 10: Hoare triple {2063#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {2103#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:13:31,644 INFO L290 TraceCheckUtils]: 9: Hoare triple {2126#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [85] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {2063#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:31,645 INFO L290 TraceCheckUtils]: 8: Hoare triple {2130#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [88] L28-2-->L27-2_primed: Formula: (let ((.cse2 (<= 50 v_main_~x~0_147)) (.cse0 (= v_main_~y~0_82 v_main_~y~0_81)) (.cse1 (= v_main_~x~0_147 v_main_~x~0_146))) (or (and .cse0 .cse1) (and .cse2 (< v_main_~x~0_146 101) (< v_main_~x~0_147 v_main_~x~0_146) (= (+ v_main_~x~0_146 v_main_~y~0_82) (+ v_main_~x~0_147 v_main_~y~0_81))) (and (or (not .cse2) (not (< v_main_~x~0_147 100))) .cse0 .cse1))) InVars {main_~x~0=v_main_~x~0_147, main_~y~0=v_main_~y~0_82} OutVars{main_~x~0=v_main_~x~0_146, main_~y~0=v_main_~y~0_81} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {2126#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:13:31,645 INFO L290 TraceCheckUtils]: 7: Hoare triple {2130#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [87] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2130#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:13:31,646 INFO L290 TraceCheckUtils]: 6: Hoare triple {2137#(and (<= 50 main_~y~0) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [86] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_145 v_main_~x~0_144))) (or (and (< v_main_~x~0_145 v_main_~x~0_144) (< v_main_~x~0_144 51)) .cse0 (and .cse0 (not (< v_main_~x~0_145 50))))) InVars {main_~x~0=v_main_~x~0_145} OutVars{main_~x~0=v_main_~x~0_144} AuxVars[] AssignedVars[main_~x~0] {2130#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:13:31,647 INFO L290 TraceCheckUtils]: 5: Hoare triple {2055#true} ~x~0 := 0;~y~0 := 50; {2137#(and (<= 50 main_~y~0) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:13:31,647 INFO L272 TraceCheckUtils]: 4: Hoare triple {2055#true} call #t~ret1 := main(); {2055#true} is VALID [2022-04-15 06:13:31,647 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2055#true} {2055#true} #56#return; {2055#true} is VALID [2022-04-15 06:13:31,647 INFO L290 TraceCheckUtils]: 2: Hoare triple {2055#true} assume true; {2055#true} is VALID [2022-04-15 06:13:31,647 INFO L290 TraceCheckUtils]: 1: Hoare triple {2055#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {2055#true} is VALID [2022-04-15 06:13:31,647 INFO L272 TraceCheckUtils]: 0: Hoare triple {2055#true} call ULTIMATE.init(); {2055#true} is VALID [2022-04-15 06:13:31,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:31,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523285530] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:13:31,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:13:31,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:13:32,001 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:13:32,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1781061005] [2022-04-15 06:13:32,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1781061005] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:13:32,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:13:32,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-15 06:13:32,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931891025] [2022-04-15 06:13:32,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:13:32,001 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 13 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-04-15 06:13:32,002 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:13:32,002 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 13 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:32,025 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:32,025 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-15 06:13:32,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:13:32,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-15 06:13:32,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2022-04-15 06:13:32,026 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 13 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:32,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:32,787 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2022-04-15 06:13:32,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-15 06:13:32,787 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 13 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-04-15 06:13:32,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:13:32,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 13 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:32,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 43 transitions. [2022-04-15 06:13:32,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 13 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:32,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 43 transitions. [2022-04-15 06:13:32,789 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 12 states and 43 transitions. [2022-04-15 06:13:32,836 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 43 edges. 43 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:32,838 INFO L225 Difference]: With dead ends: 38 [2022-04-15 06:13:32,838 INFO L226 Difference]: Without dead ends: 31 [2022-04-15 06:13:32,838 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=225, Invalid=965, Unknown=0, NotChecked=0, Total=1190 [2022-04-15 06:13:32,839 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 17 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-15 06:13:32,839 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 68 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-15 06:13:32,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-04-15 06:13:32,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-04-15 06:13:32,884 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:13:32,885 INFO L82 GeneralOperation]: Start isEquivalent. First operand 31 states. Second operand has 31 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:32,885 INFO L74 IsIncluded]: Start isIncluded. First operand 31 states. Second operand has 31 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:32,885 INFO L87 Difference]: Start difference. First operand 31 states. Second operand has 31 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:32,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:32,886 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2022-04-15 06:13:32,886 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2022-04-15 06:13:32,886 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:13:32,886 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:13:32,886 INFO L74 IsIncluded]: Start isIncluded. First operand has 31 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 31 states. [2022-04-15 06:13:32,886 INFO L87 Difference]: Start difference. First operand has 31 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 31 states. [2022-04-15 06:13:32,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:32,887 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2022-04-15 06:13:32,887 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2022-04-15 06:13:32,887 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:13:32,887 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:13:32,887 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:13:32,887 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:13:32,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:32,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2022-04-15 06:13:32,888 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 27 [2022-04-15 06:13:32,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:13:32,888 INFO L478 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2022-04-15 06:13:32,889 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 13 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:32,889 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 31 states and 33 transitions. [2022-04-15 06:13:32,940 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:32,940 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2022-04-15 06:13:32,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-04-15 06:13:32,941 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:13:32,941 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:13:32,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-15 06:13:33,141 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:13:33,142 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:13:33,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:13:33,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1191041909, now seen corresponding path program 8 times [2022-04-15 06:13:33,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:13:33,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [830483634] [2022-04-15 06:13:37,237 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-15 06:13:37,291 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:13:39,228 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:13:39,229 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:13:39,232 INFO L85 PathProgramCache]: Analyzing trace with hash 422681036, now seen corresponding path program 1 times [2022-04-15 06:13:39,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:13:39,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214165200] [2022-04-15 06:13:39,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:13:39,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:13:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:39,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:13:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:39,336 INFO L290 TraceCheckUtils]: 0: Hoare triple {2396#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {2385#true} is VALID [2022-04-15 06:13:39,336 INFO L290 TraceCheckUtils]: 1: Hoare triple {2385#true} assume true; {2385#true} is VALID [2022-04-15 06:13:39,337 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {2385#true} {2385#true} #56#return; {2385#true} is VALID [2022-04-15 06:13:39,337 INFO L272 TraceCheckUtils]: 0: Hoare triple {2385#true} call ULTIMATE.init(); {2396#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:13:39,337 INFO L290 TraceCheckUtils]: 1: Hoare triple {2396#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {2385#true} is VALID [2022-04-15 06:13:39,337 INFO L290 TraceCheckUtils]: 2: Hoare triple {2385#true} assume true; {2385#true} is VALID [2022-04-15 06:13:39,338 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2385#true} {2385#true} #56#return; {2385#true} is VALID [2022-04-15 06:13:39,338 INFO L272 TraceCheckUtils]: 4: Hoare triple {2385#true} call #t~ret1 := main(); {2385#true} is VALID [2022-04-15 06:13:39,338 INFO L290 TraceCheckUtils]: 5: Hoare triple {2385#true} ~x~0 := 0;~y~0 := 50; {2390#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:39,339 INFO L290 TraceCheckUtils]: 6: Hoare triple {2390#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [90] L28-2-->L27-2_primed: Formula: (or (and (< v_main_~x~0_169 51) (< v_main_~x~0_170 v_main_~x~0_169)) (and (not (< v_main_~x~0_170 50)) (= v_main_~x~0_169 v_main_~x~0_170)) (= v_main_~x~0_170 v_main_~x~0_169)) InVars {main_~x~0=v_main_~x~0_170} OutVars{main_~x~0=v_main_~x~0_169} AuxVars[] AssignedVars[main_~x~0] {2391#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:39,340 INFO L290 TraceCheckUtils]: 7: Hoare triple {2391#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [91] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2391#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:39,341 INFO L290 TraceCheckUtils]: 8: Hoare triple {2391#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [92] L28-2-->L27-2_primed: Formula: (let ((.cse1 (= v_main_~y~0_98 v_main_~y~0_97)) (.cse0 (<= 50 v_main_~x~0_172)) (.cse2 (= v_main_~x~0_172 v_main_~x~0_171))) (or (and (< v_main_~x~0_171 101) (= (+ v_main_~x~0_171 v_main_~y~0_98) (+ v_main_~x~0_172 v_main_~y~0_97)) .cse0 (< v_main_~x~0_172 v_main_~x~0_171)) (and .cse1 .cse2) (and .cse1 (or (not .cse0) (not (< v_main_~x~0_172 100))) .cse2))) InVars {main_~x~0=v_main_~x~0_172, main_~y~0=v_main_~y~0_98} OutVars{main_~x~0=v_main_~x~0_171, main_~y~0=v_main_~y~0_97} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {2392#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:13:39,341 INFO L290 TraceCheckUtils]: 9: Hoare triple {2392#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [89] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {2393#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:39,342 INFO L272 TraceCheckUtils]: 10: Hoare triple {2393#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {2394#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:13:39,343 INFO L290 TraceCheckUtils]: 11: Hoare triple {2394#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {2395#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:13:39,343 INFO L290 TraceCheckUtils]: 12: Hoare triple {2395#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {2386#false} is VALID [2022-04-15 06:13:39,343 INFO L290 TraceCheckUtils]: 13: Hoare triple {2386#false} assume !false; {2386#false} is VALID [2022-04-15 06:13:39,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:39,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:13:39,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214165200] [2022-04-15 06:13:39,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214165200] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:13:39,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36311873] [2022-04-15 06:13:39,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:13:39,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:13:39,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:13:39,346 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:13:39,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-15 06:13:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:39,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:13:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:39,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:13:39,678 INFO L272 TraceCheckUtils]: 0: Hoare triple {2385#true} call ULTIMATE.init(); {2385#true} is VALID [2022-04-15 06:13:39,678 INFO L290 TraceCheckUtils]: 1: Hoare triple {2385#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {2385#true} is VALID [2022-04-15 06:13:39,680 INFO L290 TraceCheckUtils]: 2: Hoare triple {2385#true} assume true; {2385#true} is VALID [2022-04-15 06:13:39,680 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2385#true} {2385#true} #56#return; {2385#true} is VALID [2022-04-15 06:13:39,680 INFO L272 TraceCheckUtils]: 4: Hoare triple {2385#true} call #t~ret1 := main(); {2385#true} is VALID [2022-04-15 06:13:39,680 INFO L290 TraceCheckUtils]: 5: Hoare triple {2385#true} ~x~0 := 0;~y~0 := 50; {2415#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:13:39,681 INFO L290 TraceCheckUtils]: 6: Hoare triple {2415#(and (<= main_~x~0 0) (= main_~y~0 50))} [90] L28-2-->L27-2_primed: Formula: (or (and (< v_main_~x~0_169 51) (< v_main_~x~0_170 v_main_~x~0_169)) (and (not (< v_main_~x~0_170 50)) (= v_main_~x~0_169 v_main_~x~0_170)) (= v_main_~x~0_170 v_main_~x~0_169)) InVars {main_~x~0=v_main_~x~0_170} OutVars{main_~x~0=v_main_~x~0_169} AuxVars[] AssignedVars[main_~x~0] {2419#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:13:39,682 INFO L290 TraceCheckUtils]: 7: Hoare triple {2419#(and (= main_~y~0 50) (< main_~x~0 51))} [91] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2419#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:13:39,683 INFO L290 TraceCheckUtils]: 8: Hoare triple {2419#(and (= main_~y~0 50) (< main_~x~0 51))} [92] L28-2-->L27-2_primed: Formula: (let ((.cse1 (= v_main_~y~0_98 v_main_~y~0_97)) (.cse0 (<= 50 v_main_~x~0_172)) (.cse2 (= v_main_~x~0_172 v_main_~x~0_171))) (or (and (< v_main_~x~0_171 101) (= (+ v_main_~x~0_171 v_main_~y~0_98) (+ v_main_~x~0_172 v_main_~y~0_97)) .cse0 (< v_main_~x~0_172 v_main_~x~0_171)) (and .cse1 .cse2) (and .cse1 (or (not .cse0) (not (< v_main_~x~0_172 100))) .cse2))) InVars {main_~x~0=v_main_~x~0_172, main_~y~0=v_main_~y~0_98} OutVars{main_~x~0=v_main_~x~0_171, main_~y~0=v_main_~y~0_97} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {2426#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:13:39,684 INFO L290 TraceCheckUtils]: 9: Hoare triple {2426#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [89] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {2393#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:39,684 INFO L272 TraceCheckUtils]: 10: Hoare triple {2393#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {2433#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:13:39,685 INFO L290 TraceCheckUtils]: 11: Hoare triple {2433#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {2437#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:13:39,685 INFO L290 TraceCheckUtils]: 12: Hoare triple {2437#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {2386#false} is VALID [2022-04-15 06:13:39,685 INFO L290 TraceCheckUtils]: 13: Hoare triple {2386#false} assume !false; {2386#false} is VALID [2022-04-15 06:13:39,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:39,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:13:40,206 INFO L290 TraceCheckUtils]: 13: Hoare triple {2386#false} assume !false; {2386#false} is VALID [2022-04-15 06:13:40,208 INFO L290 TraceCheckUtils]: 12: Hoare triple {2437#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {2386#false} is VALID [2022-04-15 06:13:40,208 INFO L290 TraceCheckUtils]: 11: Hoare triple {2433#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {2437#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:13:40,209 INFO L272 TraceCheckUtils]: 10: Hoare triple {2393#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {2433#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:13:40,209 INFO L290 TraceCheckUtils]: 9: Hoare triple {2456#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [89] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {2393#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:40,210 INFO L290 TraceCheckUtils]: 8: Hoare triple {2460#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [92] L28-2-->L27-2_primed: Formula: (let ((.cse1 (= v_main_~y~0_98 v_main_~y~0_97)) (.cse0 (<= 50 v_main_~x~0_172)) (.cse2 (= v_main_~x~0_172 v_main_~x~0_171))) (or (and (< v_main_~x~0_171 101) (= (+ v_main_~x~0_171 v_main_~y~0_98) (+ v_main_~x~0_172 v_main_~y~0_97)) .cse0 (< v_main_~x~0_172 v_main_~x~0_171)) (and .cse1 .cse2) (and .cse1 (or (not .cse0) (not (< v_main_~x~0_172 100))) .cse2))) InVars {main_~x~0=v_main_~x~0_172, main_~y~0=v_main_~y~0_98} OutVars{main_~x~0=v_main_~x~0_171, main_~y~0=v_main_~y~0_97} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {2456#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:13:40,211 INFO L290 TraceCheckUtils]: 7: Hoare triple {2460#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [91] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2460#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:13:40,211 INFO L290 TraceCheckUtils]: 6: Hoare triple {2467#(and (<= 50 main_~y~0) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [90] L28-2-->L27-2_primed: Formula: (or (and (< v_main_~x~0_169 51) (< v_main_~x~0_170 v_main_~x~0_169)) (and (not (< v_main_~x~0_170 50)) (= v_main_~x~0_169 v_main_~x~0_170)) (= v_main_~x~0_170 v_main_~x~0_169)) InVars {main_~x~0=v_main_~x~0_170} OutVars{main_~x~0=v_main_~x~0_169} AuxVars[] AssignedVars[main_~x~0] {2460#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:13:40,212 INFO L290 TraceCheckUtils]: 5: Hoare triple {2385#true} ~x~0 := 0;~y~0 := 50; {2467#(and (<= 50 main_~y~0) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:13:40,212 INFO L272 TraceCheckUtils]: 4: Hoare triple {2385#true} call #t~ret1 := main(); {2385#true} is VALID [2022-04-15 06:13:40,212 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2385#true} {2385#true} #56#return; {2385#true} is VALID [2022-04-15 06:13:40,212 INFO L290 TraceCheckUtils]: 2: Hoare triple {2385#true} assume true; {2385#true} is VALID [2022-04-15 06:13:40,212 INFO L290 TraceCheckUtils]: 1: Hoare triple {2385#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {2385#true} is VALID [2022-04-15 06:13:40,212 INFO L272 TraceCheckUtils]: 0: Hoare triple {2385#true} call ULTIMATE.init(); {2385#true} is VALID [2022-04-15 06:13:40,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:40,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36311873] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:13:40,213 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:13:40,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:13:40,618 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:13:40,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [830483634] [2022-04-15 06:13:40,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [830483634] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:13:40,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:13:40,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-15 06:13:40,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006687605] [2022-04-15 06:13:40,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:13:40,619 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 14 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-04-15 06:13:40,619 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:13:40,619 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 14 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:40,641 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 29 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:40,641 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-15 06:13:40,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:13:40,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-15 06:13:40,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=557, Unknown=0, NotChecked=0, Total=702 [2022-04-15 06:13:40,642 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 14 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:41,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:41,459 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2022-04-15 06:13:41,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-15 06:13:41,460 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 14 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-04-15 06:13:41,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:13:41,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 14 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:41,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 45 transitions. [2022-04-15 06:13:41,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 14 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:41,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 45 transitions. [2022-04-15 06:13:41,462 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 13 states and 45 transitions. [2022-04-15 06:13:41,500 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 45 edges. 45 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:41,501 INFO L225 Difference]: With dead ends: 40 [2022-04-15 06:13:41,501 INFO L226 Difference]: Without dead ends: 33 [2022-04-15 06:13:41,502 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=241, Invalid=1091, Unknown=0, NotChecked=0, Total=1332 [2022-04-15 06:13:41,502 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-15 06:13:41,502 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 78 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-15 06:13:41,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-04-15 06:13:41,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-04-15 06:13:41,543 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:13:41,544 INFO L82 GeneralOperation]: Start isEquivalent. First operand 33 states. Second operand has 33 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:41,544 INFO L74 IsIncluded]: Start isIncluded. First operand 33 states. Second operand has 33 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:41,544 INFO L87 Difference]: Start difference. First operand 33 states. Second operand has 33 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:41,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:41,545 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2022-04-15 06:13:41,545 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-04-15 06:13:41,545 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:13:41,545 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:13:41,545 INFO L74 IsIncluded]: Start isIncluded. First operand has 33 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 33 states. [2022-04-15 06:13:41,545 INFO L87 Difference]: Start difference. First operand has 33 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 33 states. [2022-04-15 06:13:41,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:41,546 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2022-04-15 06:13:41,546 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-04-15 06:13:41,546 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:13:41,546 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:13:41,546 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:13:41,546 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:13:41,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:41,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2022-04-15 06:13:41,547 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 29 [2022-04-15 06:13:41,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:13:41,548 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2022-04-15 06:13:41,548 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 14 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:41,548 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 33 states and 35 transitions. [2022-04-15 06:13:41,581 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:41,581 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-04-15 06:13:41,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-04-15 06:13:41,581 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:13:41,581 INFO L499 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:13:41,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-04-15 06:13:41,782 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-04-15 06:13:41,782 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:13:41,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:13:41,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1060301530, now seen corresponding path program 9 times [2022-04-15 06:13:41,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:13:41,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1784813725] [2022-04-15 06:13:41,930 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:13:44,200 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-15 06:13:44,356 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:13:44,358 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:13:44,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1822754100, now seen corresponding path program 1 times [2022-04-15 06:13:44,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:13:44,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043581391] [2022-04-15 06:13:44,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:13:44,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:13:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:44,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:13:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:44,486 INFO L290 TraceCheckUtils]: 0: Hoare triple {2741#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {2730#true} is VALID [2022-04-15 06:13:44,486 INFO L290 TraceCheckUtils]: 1: Hoare triple {2730#true} assume true; {2730#true} is VALID [2022-04-15 06:13:44,486 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {2730#true} {2730#true} #56#return; {2730#true} is VALID [2022-04-15 06:13:44,487 INFO L272 TraceCheckUtils]: 0: Hoare triple {2730#true} call ULTIMATE.init(); {2741#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:13:44,487 INFO L290 TraceCheckUtils]: 1: Hoare triple {2741#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {2730#true} is VALID [2022-04-15 06:13:44,487 INFO L290 TraceCheckUtils]: 2: Hoare triple {2730#true} assume true; {2730#true} is VALID [2022-04-15 06:13:44,487 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2730#true} {2730#true} #56#return; {2730#true} is VALID [2022-04-15 06:13:44,487 INFO L272 TraceCheckUtils]: 4: Hoare triple {2730#true} call #t~ret1 := main(); {2730#true} is VALID [2022-04-15 06:13:44,488 INFO L290 TraceCheckUtils]: 5: Hoare triple {2730#true} ~x~0 := 0;~y~0 := 50; {2735#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:44,489 INFO L290 TraceCheckUtils]: 6: Hoare triple {2735#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [94] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_196 v_main_~x~0_195))) (or (and (< v_main_~x~0_196 v_main_~x~0_195) (< v_main_~x~0_195 51)) .cse0 (and .cse0 (<= 50 v_main_~x~0_196)))) InVars {main_~x~0=v_main_~x~0_196} OutVars{main_~x~0=v_main_~x~0_195} AuxVars[] AssignedVars[main_~x~0] {2736#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:44,489 INFO L290 TraceCheckUtils]: 7: Hoare triple {2736#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [95] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2736#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:44,490 INFO L290 TraceCheckUtils]: 8: Hoare triple {2736#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [96] L28-2-->L27-2_primed: Formula: (let ((.cse2 (<= 50 v_main_~x~0_198)) (.cse0 (= v_main_~y~0_115 v_main_~y~0_114)) (.cse1 (= v_main_~x~0_198 v_main_~x~0_197))) (or (and .cse0 .cse1) (and (< v_main_~x~0_197 101) (< v_main_~x~0_198 v_main_~x~0_197) .cse2 (= (+ v_main_~x~0_198 v_main_~y~0_114) (+ v_main_~x~0_197 v_main_~y~0_115))) (and (or (not .cse2) (not (< v_main_~x~0_198 100))) .cse0 .cse1))) InVars {main_~x~0=v_main_~x~0_198, main_~y~0=v_main_~y~0_115} OutVars{main_~x~0=v_main_~x~0_197, main_~y~0=v_main_~y~0_114} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {2737#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:13:44,491 INFO L290 TraceCheckUtils]: 9: Hoare triple {2737#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [93] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {2738#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:44,492 INFO L272 TraceCheckUtils]: 10: Hoare triple {2738#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {2739#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:13:44,492 INFO L290 TraceCheckUtils]: 11: Hoare triple {2739#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {2740#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:13:44,492 INFO L290 TraceCheckUtils]: 12: Hoare triple {2740#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {2731#false} is VALID [2022-04-15 06:13:44,492 INFO L290 TraceCheckUtils]: 13: Hoare triple {2731#false} assume !false; {2731#false} is VALID [2022-04-15 06:13:44,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:44,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:13:44,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043581391] [2022-04-15 06:13:44,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043581391] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:13:44,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777969504] [2022-04-15 06:13:44,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:13:44,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:13:44,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:13:44,495 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:13:44,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-04-15 06:13:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:44,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:13:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:44,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:13:44,956 INFO L272 TraceCheckUtils]: 0: Hoare triple {2730#true} call ULTIMATE.init(); {2730#true} is VALID [2022-04-15 06:13:44,956 INFO L290 TraceCheckUtils]: 1: Hoare triple {2730#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {2730#true} is VALID [2022-04-15 06:13:44,956 INFO L290 TraceCheckUtils]: 2: Hoare triple {2730#true} assume true; {2730#true} is VALID [2022-04-15 06:13:44,956 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2730#true} {2730#true} #56#return; {2730#true} is VALID [2022-04-15 06:13:44,956 INFO L272 TraceCheckUtils]: 4: Hoare triple {2730#true} call #t~ret1 := main(); {2730#true} is VALID [2022-04-15 06:13:44,957 INFO L290 TraceCheckUtils]: 5: Hoare triple {2730#true} ~x~0 := 0;~y~0 := 50; {2760#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:13:44,957 INFO L290 TraceCheckUtils]: 6: Hoare triple {2760#(and (<= main_~x~0 0) (= main_~y~0 50))} [94] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_196 v_main_~x~0_195))) (or (and (< v_main_~x~0_196 v_main_~x~0_195) (< v_main_~x~0_195 51)) .cse0 (and .cse0 (<= 50 v_main_~x~0_196)))) InVars {main_~x~0=v_main_~x~0_196} OutVars{main_~x~0=v_main_~x~0_195} AuxVars[] AssignedVars[main_~x~0] {2764#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:13:44,959 INFO L290 TraceCheckUtils]: 7: Hoare triple {2764#(and (= main_~y~0 50) (< main_~x~0 51))} [95] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2764#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:13:44,960 INFO L290 TraceCheckUtils]: 8: Hoare triple {2764#(and (= main_~y~0 50) (< main_~x~0 51))} [96] L28-2-->L27-2_primed: Formula: (let ((.cse2 (<= 50 v_main_~x~0_198)) (.cse0 (= v_main_~y~0_115 v_main_~y~0_114)) (.cse1 (= v_main_~x~0_198 v_main_~x~0_197))) (or (and .cse0 .cse1) (and (< v_main_~x~0_197 101) (< v_main_~x~0_198 v_main_~x~0_197) .cse2 (= (+ v_main_~x~0_198 v_main_~y~0_114) (+ v_main_~x~0_197 v_main_~y~0_115))) (and (or (not .cse2) (not (< v_main_~x~0_198 100))) .cse0 .cse1))) InVars {main_~x~0=v_main_~x~0_198, main_~y~0=v_main_~y~0_115} OutVars{main_~x~0=v_main_~x~0_197, main_~y~0=v_main_~y~0_114} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {2771#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:13:44,961 INFO L290 TraceCheckUtils]: 9: Hoare triple {2771#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [93] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {2738#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:44,961 INFO L272 TraceCheckUtils]: 10: Hoare triple {2738#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {2778#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:13:44,962 INFO L290 TraceCheckUtils]: 11: Hoare triple {2778#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {2782#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:13:44,962 INFO L290 TraceCheckUtils]: 12: Hoare triple {2782#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {2731#false} is VALID [2022-04-15 06:13:44,962 INFO L290 TraceCheckUtils]: 13: Hoare triple {2731#false} assume !false; {2731#false} is VALID [2022-04-15 06:13:44,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:44,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:13:45,552 INFO L290 TraceCheckUtils]: 13: Hoare triple {2731#false} assume !false; {2731#false} is VALID [2022-04-15 06:13:45,553 INFO L290 TraceCheckUtils]: 12: Hoare triple {2782#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {2731#false} is VALID [2022-04-15 06:13:45,553 INFO L290 TraceCheckUtils]: 11: Hoare triple {2778#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {2782#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:13:45,554 INFO L272 TraceCheckUtils]: 10: Hoare triple {2738#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {2778#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:13:45,555 INFO L290 TraceCheckUtils]: 9: Hoare triple {2801#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [93] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {2738#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:45,556 INFO L290 TraceCheckUtils]: 8: Hoare triple {2805#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [96] L28-2-->L27-2_primed: Formula: (let ((.cse2 (<= 50 v_main_~x~0_198)) (.cse0 (= v_main_~y~0_115 v_main_~y~0_114)) (.cse1 (= v_main_~x~0_198 v_main_~x~0_197))) (or (and .cse0 .cse1) (and (< v_main_~x~0_197 101) (< v_main_~x~0_198 v_main_~x~0_197) .cse2 (= (+ v_main_~x~0_198 v_main_~y~0_114) (+ v_main_~x~0_197 v_main_~y~0_115))) (and (or (not .cse2) (not (< v_main_~x~0_198 100))) .cse0 .cse1))) InVars {main_~x~0=v_main_~x~0_198, main_~y~0=v_main_~y~0_115} OutVars{main_~x~0=v_main_~x~0_197, main_~y~0=v_main_~y~0_114} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {2801#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:13:45,556 INFO L290 TraceCheckUtils]: 7: Hoare triple {2805#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [95] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2805#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:13:45,557 INFO L290 TraceCheckUtils]: 6: Hoare triple {2812#(and (<= 50 main_~y~0) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [94] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_196 v_main_~x~0_195))) (or (and (< v_main_~x~0_196 v_main_~x~0_195) (< v_main_~x~0_195 51)) .cse0 (and .cse0 (<= 50 v_main_~x~0_196)))) InVars {main_~x~0=v_main_~x~0_196} OutVars{main_~x~0=v_main_~x~0_195} AuxVars[] AssignedVars[main_~x~0] {2805#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:13:45,558 INFO L290 TraceCheckUtils]: 5: Hoare triple {2730#true} ~x~0 := 0;~y~0 := 50; {2812#(and (<= 50 main_~y~0) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:13:45,558 INFO L272 TraceCheckUtils]: 4: Hoare triple {2730#true} call #t~ret1 := main(); {2730#true} is VALID [2022-04-15 06:13:45,558 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2730#true} {2730#true} #56#return; {2730#true} is VALID [2022-04-15 06:13:45,558 INFO L290 TraceCheckUtils]: 2: Hoare triple {2730#true} assume true; {2730#true} is VALID [2022-04-15 06:13:45,558 INFO L290 TraceCheckUtils]: 1: Hoare triple {2730#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {2730#true} is VALID [2022-04-15 06:13:45,558 INFO L272 TraceCheckUtils]: 0: Hoare triple {2730#true} call ULTIMATE.init(); {2730#true} is VALID [2022-04-15 06:13:45,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:45,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777969504] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:13:45,559 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:13:45,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:13:46,102 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:13:46,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1784813725] [2022-04-15 06:13:46,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1784813725] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:13:46,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:13:46,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-04-15 06:13:46,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570569089] [2022-04-15 06:13:46,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:13:46,103 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 15 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-04-15 06:13:46,103 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:13:46,103 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 17 states, 16 states have (on average 1.6875) internal successors, (27), 15 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:46,130 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:46,130 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-04-15 06:13:46,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:13:46,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-04-15 06:13:46,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2022-04-15 06:13:46,132 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 17 states, 16 states have (on average 1.6875) internal successors, (27), 15 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:47,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:47,164 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2022-04-15 06:13:47,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-15 06:13:47,165 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 15 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-04-15 06:13:47,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:13:47,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.6875) internal successors, (27), 15 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:47,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 47 transitions. [2022-04-15 06:13:47,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.6875) internal successors, (27), 15 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:47,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 47 transitions. [2022-04-15 06:13:47,167 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 14 states and 47 transitions. [2022-04-15 06:13:47,216 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 47 edges. 47 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:47,217 INFO L225 Difference]: With dead ends: 42 [2022-04-15 06:13:47,217 INFO L226 Difference]: Without dead ends: 35 [2022-04-15 06:13:47,218 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=257, Invalid=1225, Unknown=0, NotChecked=0, Total=1482 [2022-04-15 06:13:47,218 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 19 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-15 06:13:47,218 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 83 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-15 06:13:47,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-04-15 06:13:47,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-04-15 06:13:47,285 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:13:47,285 INFO L82 GeneralOperation]: Start isEquivalent. First operand 35 states. Second operand has 35 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:47,286 INFO L74 IsIncluded]: Start isIncluded. First operand 35 states. Second operand has 35 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:47,286 INFO L87 Difference]: Start difference. First operand 35 states. Second operand has 35 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:47,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:47,287 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2022-04-15 06:13:47,287 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2022-04-15 06:13:47,287 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:13:47,287 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:13:47,287 INFO L74 IsIncluded]: Start isIncluded. First operand has 35 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 35 states. [2022-04-15 06:13:47,287 INFO L87 Difference]: Start difference. First operand has 35 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 35 states. [2022-04-15 06:13:47,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:47,288 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2022-04-15 06:13:47,288 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2022-04-15 06:13:47,288 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:13:47,288 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:13:47,288 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:13:47,288 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:13:47,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:47,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2022-04-15 06:13:47,289 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 31 [2022-04-15 06:13:47,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:13:47,289 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2022-04-15 06:13:47,290 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 15 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:47,290 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 35 states and 37 transitions. [2022-04-15 06:13:47,332 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 37 edges. 37 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:47,332 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2022-04-15 06:13:47,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-15 06:13:47,332 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:13:47,332 INFO L499 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:13:47,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-04-15 06:13:47,533 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:13:47,534 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:13:47,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:13:47,534 INFO L85 PathProgramCache]: Analyzing trace with hash 27151105, now seen corresponding path program 10 times [2022-04-15 06:13:47,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:13:47,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [562386377] [2022-04-15 06:13:47,652 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:13:47,938 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:13:47,940 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:13:47,942 INFO L85 PathProgramCache]: Analyzing trace with hash 226778060, now seen corresponding path program 1 times [2022-04-15 06:13:47,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:13:47,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606491676] [2022-04-15 06:13:47,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:13:47,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:13:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:48,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:13:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:48,135 INFO L290 TraceCheckUtils]: 0: Hoare triple {3101#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {3090#true} is VALID [2022-04-15 06:13:48,135 INFO L290 TraceCheckUtils]: 1: Hoare triple {3090#true} assume true; {3090#true} is VALID [2022-04-15 06:13:48,136 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {3090#true} {3090#true} #56#return; {3090#true} is VALID [2022-04-15 06:13:48,136 INFO L272 TraceCheckUtils]: 0: Hoare triple {3090#true} call ULTIMATE.init(); {3101#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:13:48,136 INFO L290 TraceCheckUtils]: 1: Hoare triple {3101#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {3090#true} is VALID [2022-04-15 06:13:48,136 INFO L290 TraceCheckUtils]: 2: Hoare triple {3090#true} assume true; {3090#true} is VALID [2022-04-15 06:13:48,137 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {3090#true} {3090#true} #56#return; {3090#true} is VALID [2022-04-15 06:13:48,137 INFO L272 TraceCheckUtils]: 4: Hoare triple {3090#true} call #t~ret1 := main(); {3090#true} is VALID [2022-04-15 06:13:48,137 INFO L290 TraceCheckUtils]: 5: Hoare triple {3090#true} ~x~0 := 0;~y~0 := 50; {3095#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:48,138 INFO L290 TraceCheckUtils]: 6: Hoare triple {3095#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [98] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_223 v_main_~x~0_222))) (or (and (< v_main_~x~0_223 v_main_~x~0_222) (< v_main_~x~0_222 51)) (and (not (< v_main_~x~0_223 50)) .cse0) .cse0)) InVars {main_~x~0=v_main_~x~0_223} OutVars{main_~x~0=v_main_~x~0_222} AuxVars[] AssignedVars[main_~x~0] {3096#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:48,138 INFO L290 TraceCheckUtils]: 7: Hoare triple {3096#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [99] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3096#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:48,140 INFO L290 TraceCheckUtils]: 8: Hoare triple {3096#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [100] L28-2-->L27-2_primed: Formula: (let ((.cse1 (<= 50 v_main_~x~0_225)) (.cse2 (= v_main_~x~0_225 v_main_~x~0_224)) (.cse3 (= v_main_~y~0_133 v_main_~y~0_132))) (or (let ((.cse0 (+ v_main_~x~0_225 v_main_~y~0_132))) (and (< v_main_~y~0_133 v_main_~y~0_132) (= .cse0 (+ v_main_~x~0_224 v_main_~y~0_133)) .cse1 (< .cse0 (+ 101 v_main_~y~0_133)))) (and (or (not (< v_main_~x~0_225 100)) (not .cse1)) .cse2 .cse3) (and .cse2 .cse3))) InVars {main_~x~0=v_main_~x~0_225, main_~y~0=v_main_~y~0_133} OutVars{main_~x~0=v_main_~x~0_224, main_~y~0=v_main_~y~0_132} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {3097#(or (and (or (< 99 main_~y~0) (<= main_~x~0 main_~y~0)) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:13:48,141 INFO L290 TraceCheckUtils]: 9: Hoare triple {3097#(or (and (or (< 99 main_~y~0) (<= main_~x~0 main_~y~0)) (<= main_~y~0 100)) (<= main_~x~0 50))} [97] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {3098#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:48,141 INFO L272 TraceCheckUtils]: 10: Hoare triple {3098#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {3099#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:13:48,142 INFO L290 TraceCheckUtils]: 11: Hoare triple {3099#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {3100#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:13:48,143 INFO L290 TraceCheckUtils]: 12: Hoare triple {3100#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {3091#false} is VALID [2022-04-15 06:13:48,143 INFO L290 TraceCheckUtils]: 13: Hoare triple {3091#false} assume !false; {3091#false} is VALID [2022-04-15 06:13:48,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:48,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:13:48,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606491676] [2022-04-15 06:13:48,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606491676] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:13:48,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301897209] [2022-04-15 06:13:48,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:13:48,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:13:48,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:13:48,145 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:13:48,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-04-15 06:13:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:48,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:13:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:48,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:13:48,576 INFO L272 TraceCheckUtils]: 0: Hoare triple {3090#true} call ULTIMATE.init(); {3090#true} is VALID [2022-04-15 06:13:48,577 INFO L290 TraceCheckUtils]: 1: Hoare triple {3090#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {3090#true} is VALID [2022-04-15 06:13:48,577 INFO L290 TraceCheckUtils]: 2: Hoare triple {3090#true} assume true; {3090#true} is VALID [2022-04-15 06:13:48,577 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {3090#true} {3090#true} #56#return; {3090#true} is VALID [2022-04-15 06:13:48,577 INFO L272 TraceCheckUtils]: 4: Hoare triple {3090#true} call #t~ret1 := main(); {3090#true} is VALID [2022-04-15 06:13:48,577 INFO L290 TraceCheckUtils]: 5: Hoare triple {3090#true} ~x~0 := 0;~y~0 := 50; {3120#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:13:48,578 INFO L290 TraceCheckUtils]: 6: Hoare triple {3120#(and (<= main_~x~0 0) (= main_~y~0 50))} [98] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_223 v_main_~x~0_222))) (or (and (< v_main_~x~0_223 v_main_~x~0_222) (< v_main_~x~0_222 51)) (and (not (< v_main_~x~0_223 50)) .cse0) .cse0)) InVars {main_~x~0=v_main_~x~0_223} OutVars{main_~x~0=v_main_~x~0_222} AuxVars[] AssignedVars[main_~x~0] {3124#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:13:48,579 INFO L290 TraceCheckUtils]: 7: Hoare triple {3124#(and (= main_~y~0 50) (< main_~x~0 51))} [99] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3124#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:13:48,588 INFO L290 TraceCheckUtils]: 8: Hoare triple {3124#(and (= main_~y~0 50) (< main_~x~0 51))} [100] L28-2-->L27-2_primed: Formula: (let ((.cse1 (<= 50 v_main_~x~0_225)) (.cse2 (= v_main_~x~0_225 v_main_~x~0_224)) (.cse3 (= v_main_~y~0_133 v_main_~y~0_132))) (or (let ((.cse0 (+ v_main_~x~0_225 v_main_~y~0_132))) (and (< v_main_~y~0_133 v_main_~y~0_132) (= .cse0 (+ v_main_~x~0_224 v_main_~y~0_133)) .cse1 (< .cse0 (+ 101 v_main_~y~0_133)))) (and (or (not (< v_main_~x~0_225 100)) (not .cse1)) .cse2 .cse3) (and .cse2 .cse3))) InVars {main_~x~0=v_main_~x~0_225, main_~y~0=v_main_~y~0_133} OutVars{main_~x~0=v_main_~x~0_224, main_~y~0=v_main_~y~0_132} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {3131#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:13:48,589 INFO L290 TraceCheckUtils]: 9: Hoare triple {3131#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [97] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {3098#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:48,590 INFO L272 TraceCheckUtils]: 10: Hoare triple {3098#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {3138#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:13:48,590 INFO L290 TraceCheckUtils]: 11: Hoare triple {3138#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {3142#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:13:48,591 INFO L290 TraceCheckUtils]: 12: Hoare triple {3142#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {3091#false} is VALID [2022-04-15 06:13:48,591 INFO L290 TraceCheckUtils]: 13: Hoare triple {3091#false} assume !false; {3091#false} is VALID [2022-04-15 06:13:48,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:48,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:13:49,373 INFO L290 TraceCheckUtils]: 13: Hoare triple {3091#false} assume !false; {3091#false} is VALID [2022-04-15 06:13:49,373 INFO L290 TraceCheckUtils]: 12: Hoare triple {3142#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {3091#false} is VALID [2022-04-15 06:13:49,374 INFO L290 TraceCheckUtils]: 11: Hoare triple {3138#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {3142#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:13:49,375 INFO L272 TraceCheckUtils]: 10: Hoare triple {3098#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {3138#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:13:49,375 INFO L290 TraceCheckUtils]: 9: Hoare triple {3161#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [97] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {3098#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:49,376 INFO L290 TraceCheckUtils]: 8: Hoare triple {3165#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [100] L28-2-->L27-2_primed: Formula: (let ((.cse1 (<= 50 v_main_~x~0_225)) (.cse2 (= v_main_~x~0_225 v_main_~x~0_224)) (.cse3 (= v_main_~y~0_133 v_main_~y~0_132))) (or (let ((.cse0 (+ v_main_~x~0_225 v_main_~y~0_132))) (and (< v_main_~y~0_133 v_main_~y~0_132) (= .cse0 (+ v_main_~x~0_224 v_main_~y~0_133)) .cse1 (< .cse0 (+ 101 v_main_~y~0_133)))) (and (or (not (< v_main_~x~0_225 100)) (not .cse1)) .cse2 .cse3) (and .cse2 .cse3))) InVars {main_~x~0=v_main_~x~0_225, main_~y~0=v_main_~y~0_133} OutVars{main_~x~0=v_main_~x~0_224, main_~y~0=v_main_~y~0_132} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {3161#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:13:49,377 INFO L290 TraceCheckUtils]: 7: Hoare triple {3165#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [99] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3165#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:13:49,378 INFO L290 TraceCheckUtils]: 6: Hoare triple {3172#(and (<= 50 main_~y~0) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [98] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_223 v_main_~x~0_222))) (or (and (< v_main_~x~0_223 v_main_~x~0_222) (< v_main_~x~0_222 51)) (and (not (< v_main_~x~0_223 50)) .cse0) .cse0)) InVars {main_~x~0=v_main_~x~0_223} OutVars{main_~x~0=v_main_~x~0_222} AuxVars[] AssignedVars[main_~x~0] {3165#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:13:49,379 INFO L290 TraceCheckUtils]: 5: Hoare triple {3090#true} ~x~0 := 0;~y~0 := 50; {3172#(and (<= 50 main_~y~0) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:13:49,379 INFO L272 TraceCheckUtils]: 4: Hoare triple {3090#true} call #t~ret1 := main(); {3090#true} is VALID [2022-04-15 06:13:49,379 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {3090#true} {3090#true} #56#return; {3090#true} is VALID [2022-04-15 06:13:49,379 INFO L290 TraceCheckUtils]: 2: Hoare triple {3090#true} assume true; {3090#true} is VALID [2022-04-15 06:13:49,379 INFO L290 TraceCheckUtils]: 1: Hoare triple {3090#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {3090#true} is VALID [2022-04-15 06:13:49,379 INFO L272 TraceCheckUtils]: 0: Hoare triple {3090#true} call ULTIMATE.init(); {3090#true} is VALID [2022-04-15 06:13:49,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:49,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301897209] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:13:49,380 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:13:49,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:13:49,900 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:13:49,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [562386377] [2022-04-15 06:13:49,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [562386377] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:13:49,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:13:49,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-04-15 06:13:49,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986303426] [2022-04-15 06:13:49,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:13:49,901 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 16 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2022-04-15 06:13:49,901 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:13:49,901 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 18 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 16 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:49,932 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:49,932 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-15 06:13:49,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:13:49,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-15 06:13:49,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2022-04-15 06:13:49,933 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 18 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 16 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:51,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:51,050 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2022-04-15 06:13:51,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-15 06:13:51,050 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 16 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2022-04-15 06:13:51,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:13:51,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 16 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:51,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 49 transitions. [2022-04-15 06:13:51,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 16 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:51,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 49 transitions. [2022-04-15 06:13:51,052 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 15 states and 49 transitions. [2022-04-15 06:13:51,115 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 49 edges. 49 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:51,116 INFO L225 Difference]: With dead ends: 44 [2022-04-15 06:13:51,116 INFO L226 Difference]: Without dead ends: 37 [2022-04-15 06:13:51,116 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=273, Invalid=1367, Unknown=0, NotChecked=0, Total=1640 [2022-04-15 06:13:51,117 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 20 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-15 06:13:51,117 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 83 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-15 06:13:51,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-04-15 06:13:51,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-04-15 06:13:51,169 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:13:51,169 INFO L82 GeneralOperation]: Start isEquivalent. First operand 37 states. Second operand has 37 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:51,169 INFO L74 IsIncluded]: Start isIncluded. First operand 37 states. Second operand has 37 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:51,169 INFO L87 Difference]: Start difference. First operand 37 states. Second operand has 37 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:51,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:51,170 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2022-04-15 06:13:51,170 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2022-04-15 06:13:51,170 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:13:51,170 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:13:51,170 INFO L74 IsIncluded]: Start isIncluded. First operand has 37 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 37 states. [2022-04-15 06:13:51,171 INFO L87 Difference]: Start difference. First operand has 37 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 37 states. [2022-04-15 06:13:51,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:51,171 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2022-04-15 06:13:51,171 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2022-04-15 06:13:51,172 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:13:51,172 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:13:51,172 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:13:51,172 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:13:51,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:51,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2022-04-15 06:13:51,173 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 33 [2022-04-15 06:13:51,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:13:51,173 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2022-04-15 06:13:51,173 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 16 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:51,173 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 37 states and 39 transitions. [2022-04-15 06:13:51,209 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 39 edges. 39 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:51,210 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2022-04-15 06:13:51,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-04-15 06:13:51,210 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:13:51,210 INFO L499 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:13:51,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-04-15 06:13:51,411 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-04-15 06:13:51,411 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:13:51,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:13:51,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1392080412, now seen corresponding path program 11 times [2022-04-15 06:13:51,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:13:51,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1833879849] [2022-04-15 06:13:51,532 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:13:51,780 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:13:51,782 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:13:51,784 INFO L85 PathProgramCache]: Analyzing trace with hash -2018657076, now seen corresponding path program 1 times [2022-04-15 06:13:51,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:13:51,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586400781] [2022-04-15 06:13:51,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:13:51,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:13:51,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:51,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:13:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:52,029 INFO L290 TraceCheckUtils]: 0: Hoare triple {3476#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {3465#true} is VALID [2022-04-15 06:13:52,029 INFO L290 TraceCheckUtils]: 1: Hoare triple {3465#true} assume true; {3465#true} is VALID [2022-04-15 06:13:52,029 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {3465#true} {3465#true} #56#return; {3465#true} is VALID [2022-04-15 06:13:52,030 INFO L272 TraceCheckUtils]: 0: Hoare triple {3465#true} call ULTIMATE.init(); {3476#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:13:52,030 INFO L290 TraceCheckUtils]: 1: Hoare triple {3476#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {3465#true} is VALID [2022-04-15 06:13:52,030 INFO L290 TraceCheckUtils]: 2: Hoare triple {3465#true} assume true; {3465#true} is VALID [2022-04-15 06:13:52,030 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {3465#true} {3465#true} #56#return; {3465#true} is VALID [2022-04-15 06:13:52,030 INFO L272 TraceCheckUtils]: 4: Hoare triple {3465#true} call #t~ret1 := main(); {3465#true} is VALID [2022-04-15 06:13:52,037 INFO L290 TraceCheckUtils]: 5: Hoare triple {3465#true} ~x~0 := 0;~y~0 := 50; {3470#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:52,038 INFO L290 TraceCheckUtils]: 6: Hoare triple {3470#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [102] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_251 v_main_~x~0_250))) (or (and (< v_main_~x~0_251 v_main_~x~0_250) (< v_main_~x~0_250 51)) .cse0 (and (<= 50 v_main_~x~0_251) .cse0))) InVars {main_~x~0=v_main_~x~0_251} OutVars{main_~x~0=v_main_~x~0_250} AuxVars[] AssignedVars[main_~x~0] {3471#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:52,039 INFO L290 TraceCheckUtils]: 7: Hoare triple {3471#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [103] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3471#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:52,041 INFO L290 TraceCheckUtils]: 8: Hoare triple {3471#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [104] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_152 v_main_~y~0_151)) (.cse2 (= v_main_~x~0_253 v_main_~x~0_252)) (.cse1 (<= 50 v_main_~x~0_253))) (or (and .cse0 (or (not .cse1) (not (< v_main_~x~0_253 100))) .cse2) (and .cse0 .cse2) (let ((.cse3 (+ v_main_~x~0_253 v_main_~y~0_151))) (and (= (+ v_main_~x~0_252 v_main_~y~0_152) .cse3) (< .cse3 (+ 101 v_main_~y~0_152)) .cse1 (< v_main_~y~0_152 v_main_~y~0_151))))) InVars {main_~x~0=v_main_~x~0_253, main_~y~0=v_main_~y~0_152} OutVars{main_~x~0=v_main_~x~0_252, main_~y~0=v_main_~y~0_151} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {3472#(or (and (or (< 99 main_~y~0) (<= main_~x~0 main_~y~0)) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:13:52,041 INFO L290 TraceCheckUtils]: 9: Hoare triple {3472#(or (and (or (< 99 main_~y~0) (<= main_~x~0 main_~y~0)) (<= main_~y~0 100)) (<= main_~x~0 50))} [101] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {3473#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:52,042 INFO L272 TraceCheckUtils]: 10: Hoare triple {3473#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {3474#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:13:52,043 INFO L290 TraceCheckUtils]: 11: Hoare triple {3474#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {3475#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:13:52,043 INFO L290 TraceCheckUtils]: 12: Hoare triple {3475#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {3466#false} is VALID [2022-04-15 06:13:52,043 INFO L290 TraceCheckUtils]: 13: Hoare triple {3466#false} assume !false; {3466#false} is VALID [2022-04-15 06:13:52,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:52,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:13:52,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586400781] [2022-04-15 06:13:52,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586400781] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:13:52,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905869693] [2022-04-15 06:13:52,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:13:52,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:13:52,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:13:52,045 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:13:52,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-04-15 06:13:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:52,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:13:52,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:52,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:13:52,498 INFO L272 TraceCheckUtils]: 0: Hoare triple {3465#true} call ULTIMATE.init(); {3465#true} is VALID [2022-04-15 06:13:52,498 INFO L290 TraceCheckUtils]: 1: Hoare triple {3465#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {3465#true} is VALID [2022-04-15 06:13:52,498 INFO L290 TraceCheckUtils]: 2: Hoare triple {3465#true} assume true; {3465#true} is VALID [2022-04-15 06:13:52,498 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {3465#true} {3465#true} #56#return; {3465#true} is VALID [2022-04-15 06:13:52,498 INFO L272 TraceCheckUtils]: 4: Hoare triple {3465#true} call #t~ret1 := main(); {3465#true} is VALID [2022-04-15 06:13:52,499 INFO L290 TraceCheckUtils]: 5: Hoare triple {3465#true} ~x~0 := 0;~y~0 := 50; {3495#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:13:52,499 INFO L290 TraceCheckUtils]: 6: Hoare triple {3495#(and (<= main_~x~0 0) (= main_~y~0 50))} [102] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_251 v_main_~x~0_250))) (or (and (< v_main_~x~0_251 v_main_~x~0_250) (< v_main_~x~0_250 51)) .cse0 (and (<= 50 v_main_~x~0_251) .cse0))) InVars {main_~x~0=v_main_~x~0_251} OutVars{main_~x~0=v_main_~x~0_250} AuxVars[] AssignedVars[main_~x~0] {3499#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:13:52,500 INFO L290 TraceCheckUtils]: 7: Hoare triple {3499#(and (= main_~y~0 50) (< main_~x~0 51))} [103] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3499#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:13:52,501 INFO L290 TraceCheckUtils]: 8: Hoare triple {3499#(and (= main_~y~0 50) (< main_~x~0 51))} [104] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_152 v_main_~y~0_151)) (.cse2 (= v_main_~x~0_253 v_main_~x~0_252)) (.cse1 (<= 50 v_main_~x~0_253))) (or (and .cse0 (or (not .cse1) (not (< v_main_~x~0_253 100))) .cse2) (and .cse0 .cse2) (let ((.cse3 (+ v_main_~x~0_253 v_main_~y~0_151))) (and (= (+ v_main_~x~0_252 v_main_~y~0_152) .cse3) (< .cse3 (+ 101 v_main_~y~0_152)) .cse1 (< v_main_~y~0_152 v_main_~y~0_151))))) InVars {main_~x~0=v_main_~x~0_253, main_~y~0=v_main_~y~0_152} OutVars{main_~x~0=v_main_~x~0_252, main_~y~0=v_main_~y~0_151} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {3506#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:13:52,502 INFO L290 TraceCheckUtils]: 9: Hoare triple {3506#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [101] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {3473#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:52,502 INFO L272 TraceCheckUtils]: 10: Hoare triple {3473#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {3513#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:13:52,503 INFO L290 TraceCheckUtils]: 11: Hoare triple {3513#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {3517#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:13:52,503 INFO L290 TraceCheckUtils]: 12: Hoare triple {3517#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {3466#false} is VALID [2022-04-15 06:13:52,503 INFO L290 TraceCheckUtils]: 13: Hoare triple {3466#false} assume !false; {3466#false} is VALID [2022-04-15 06:13:52,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:52,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:13:53,072 INFO L290 TraceCheckUtils]: 13: Hoare triple {3466#false} assume !false; {3466#false} is VALID [2022-04-15 06:13:53,072 INFO L290 TraceCheckUtils]: 12: Hoare triple {3517#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {3466#false} is VALID [2022-04-15 06:13:53,073 INFO L290 TraceCheckUtils]: 11: Hoare triple {3513#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {3517#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:13:53,073 INFO L272 TraceCheckUtils]: 10: Hoare triple {3473#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {3513#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:13:53,074 INFO L290 TraceCheckUtils]: 9: Hoare triple {3536#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [101] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {3473#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:53,075 INFO L290 TraceCheckUtils]: 8: Hoare triple {3540#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [104] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_152 v_main_~y~0_151)) (.cse2 (= v_main_~x~0_253 v_main_~x~0_252)) (.cse1 (<= 50 v_main_~x~0_253))) (or (and .cse0 (or (not .cse1) (not (< v_main_~x~0_253 100))) .cse2) (and .cse0 .cse2) (let ((.cse3 (+ v_main_~x~0_253 v_main_~y~0_151))) (and (= (+ v_main_~x~0_252 v_main_~y~0_152) .cse3) (< .cse3 (+ 101 v_main_~y~0_152)) .cse1 (< v_main_~y~0_152 v_main_~y~0_151))))) InVars {main_~x~0=v_main_~x~0_253, main_~y~0=v_main_~y~0_152} OutVars{main_~x~0=v_main_~x~0_252, main_~y~0=v_main_~y~0_151} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {3536#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:13:53,076 INFO L290 TraceCheckUtils]: 7: Hoare triple {3540#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [103] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3540#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:13:53,077 INFO L290 TraceCheckUtils]: 6: Hoare triple {3547#(and (<= 50 main_~y~0) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [102] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_251 v_main_~x~0_250))) (or (and (< v_main_~x~0_251 v_main_~x~0_250) (< v_main_~x~0_250 51)) .cse0 (and (<= 50 v_main_~x~0_251) .cse0))) InVars {main_~x~0=v_main_~x~0_251} OutVars{main_~x~0=v_main_~x~0_250} AuxVars[] AssignedVars[main_~x~0] {3540#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:13:53,077 INFO L290 TraceCheckUtils]: 5: Hoare triple {3465#true} ~x~0 := 0;~y~0 := 50; {3547#(and (<= 50 main_~y~0) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:13:53,077 INFO L272 TraceCheckUtils]: 4: Hoare triple {3465#true} call #t~ret1 := main(); {3465#true} is VALID [2022-04-15 06:13:53,078 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {3465#true} {3465#true} #56#return; {3465#true} is VALID [2022-04-15 06:13:53,078 INFO L290 TraceCheckUtils]: 2: Hoare triple {3465#true} assume true; {3465#true} is VALID [2022-04-15 06:13:53,078 INFO L290 TraceCheckUtils]: 1: Hoare triple {3465#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {3465#true} is VALID [2022-04-15 06:13:53,078 INFO L272 TraceCheckUtils]: 0: Hoare triple {3465#true} call ULTIMATE.init(); {3465#true} is VALID [2022-04-15 06:13:53,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:53,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905869693] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:13:53,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:13:53,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:13:53,680 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:13:53,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1833879849] [2022-04-15 06:13:53,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1833879849] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:13:53,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:13:53,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-15 06:13:53,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401818611] [2022-04-15 06:13:53,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:13:53,681 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-04-15 06:13:53,682 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:13:53,682 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:53,714 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:53,714 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-15 06:13:53,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:13:53,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-15 06:13:53,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2022-04-15 06:13:53,715 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:54,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:54,975 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2022-04-15 06:13:54,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-15 06:13:54,975 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-04-15 06:13:54,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:13:54,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:54,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 51 transitions. [2022-04-15 06:13:54,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:54,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 51 transitions. [2022-04-15 06:13:54,977 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 16 states and 51 transitions. [2022-04-15 06:13:55,030 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 51 edges. 51 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:55,031 INFO L225 Difference]: With dead ends: 46 [2022-04-15 06:13:55,031 INFO L226 Difference]: Without dead ends: 39 [2022-04-15 06:13:55,032 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 31 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=289, Invalid=1517, Unknown=0, NotChecked=0, Total=1806 [2022-04-15 06:13:55,032 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 21 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-15 06:13:55,033 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 88 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-15 06:13:55,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-04-15 06:13:55,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-04-15 06:13:55,099 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:13:55,100 INFO L82 GeneralOperation]: Start isEquivalent. First operand 39 states. Second operand has 39 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:55,100 INFO L74 IsIncluded]: Start isIncluded. First operand 39 states. Second operand has 39 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:55,100 INFO L87 Difference]: Start difference. First operand 39 states. Second operand has 39 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:55,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:55,101 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2022-04-15 06:13:55,101 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2022-04-15 06:13:55,101 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:13:55,101 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:13:55,102 INFO L74 IsIncluded]: Start isIncluded. First operand has 39 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 39 states. [2022-04-15 06:13:55,102 INFO L87 Difference]: Start difference. First operand has 39 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 39 states. [2022-04-15 06:13:55,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:55,102 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2022-04-15 06:13:55,103 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2022-04-15 06:13:55,103 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:13:55,103 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:13:55,103 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:13:55,103 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:13:55,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:55,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2022-04-15 06:13:55,104 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 35 [2022-04-15 06:13:55,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:13:55,104 INFO L478 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2022-04-15 06:13:55,104 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:55,104 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 39 states and 41 transitions. [2022-04-15 06:13:55,191 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:55,192 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2022-04-15 06:13:55,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-04-15 06:13:55,192 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:13:55,192 INFO L499 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:13:55,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-04-15 06:13:55,392 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-04-15 06:13:55,393 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:13:55,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:13:55,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1170848137, now seen corresponding path program 12 times [2022-04-15 06:13:55,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:13:55,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1941492794] [2022-04-15 06:13:55,522 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:13:55,973 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:13:55,975 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:13:55,978 INFO L85 PathProgramCache]: Analyzing trace with hash 30875084, now seen corresponding path program 1 times [2022-04-15 06:13:55,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:13:55,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299810061] [2022-04-15 06:13:55,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:13:55,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:13:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:56,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:13:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:56,168 INFO L290 TraceCheckUtils]: 0: Hoare triple {3866#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {3855#true} is VALID [2022-04-15 06:13:56,168 INFO L290 TraceCheckUtils]: 1: Hoare triple {3855#true} assume true; {3855#true} is VALID [2022-04-15 06:13:56,168 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {3855#true} {3855#true} #56#return; {3855#true} is VALID [2022-04-15 06:13:56,169 INFO L272 TraceCheckUtils]: 0: Hoare triple {3855#true} call ULTIMATE.init(); {3866#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:13:56,169 INFO L290 TraceCheckUtils]: 1: Hoare triple {3866#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {3855#true} is VALID [2022-04-15 06:13:56,169 INFO L290 TraceCheckUtils]: 2: Hoare triple {3855#true} assume true; {3855#true} is VALID [2022-04-15 06:13:56,169 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {3855#true} {3855#true} #56#return; {3855#true} is VALID [2022-04-15 06:13:56,169 INFO L272 TraceCheckUtils]: 4: Hoare triple {3855#true} call #t~ret1 := main(); {3855#true} is VALID [2022-04-15 06:13:56,170 INFO L290 TraceCheckUtils]: 5: Hoare triple {3855#true} ~x~0 := 0;~y~0 := 50; {3860#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:56,170 INFO L290 TraceCheckUtils]: 6: Hoare triple {3860#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [106] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_280 v_main_~x~0_279))) (or (and .cse0 (not (< v_main_~x~0_280 50))) (and (< v_main_~x~0_279 51) (< v_main_~x~0_280 v_main_~x~0_279)) .cse0)) InVars {main_~x~0=v_main_~x~0_280} OutVars{main_~x~0=v_main_~x~0_279} AuxVars[] AssignedVars[main_~x~0] {3861#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:56,171 INFO L290 TraceCheckUtils]: 7: Hoare triple {3861#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [107] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3861#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:13:56,172 INFO L290 TraceCheckUtils]: 8: Hoare triple {3861#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [108] L28-2-->L27-2_primed: Formula: (let ((.cse1 (= v_main_~x~0_282 v_main_~x~0_281)) (.cse0 (<= 50 v_main_~x~0_282)) (.cse2 (= v_main_~y~0_172 v_main_~y~0_171))) (or (and (= (+ v_main_~x~0_281 v_main_~y~0_172) (+ v_main_~x~0_282 v_main_~y~0_171)) (< v_main_~x~0_282 v_main_~x~0_281) .cse0 (< v_main_~x~0_281 101)) (and .cse1 .cse2) (and .cse1 (or (not (< v_main_~x~0_282 100)) (not .cse0)) .cse2))) InVars {main_~x~0=v_main_~x~0_282, main_~y~0=v_main_~y~0_172} OutVars{main_~x~0=v_main_~x~0_281, main_~y~0=v_main_~y~0_171} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {3862#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:13:56,172 INFO L290 TraceCheckUtils]: 9: Hoare triple {3862#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [105] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {3863#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:56,173 INFO L272 TraceCheckUtils]: 10: Hoare triple {3863#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {3864#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:13:56,173 INFO L290 TraceCheckUtils]: 11: Hoare triple {3864#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {3865#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:13:56,174 INFO L290 TraceCheckUtils]: 12: Hoare triple {3865#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {3856#false} is VALID [2022-04-15 06:13:56,174 INFO L290 TraceCheckUtils]: 13: Hoare triple {3856#false} assume !false; {3856#false} is VALID [2022-04-15 06:13:56,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:56,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:13:56,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299810061] [2022-04-15 06:13:56,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299810061] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:13:56,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777703836] [2022-04-15 06:13:56,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:13:56,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:13:56,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:13:56,181 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:13:56,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-04-15 06:13:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:56,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:13:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:13:56,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:13:56,773 INFO L272 TraceCheckUtils]: 0: Hoare triple {3855#true} call ULTIMATE.init(); {3855#true} is VALID [2022-04-15 06:13:56,773 INFO L290 TraceCheckUtils]: 1: Hoare triple {3855#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {3855#true} is VALID [2022-04-15 06:13:56,773 INFO L290 TraceCheckUtils]: 2: Hoare triple {3855#true} assume true; {3855#true} is VALID [2022-04-15 06:13:56,774 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {3855#true} {3855#true} #56#return; {3855#true} is VALID [2022-04-15 06:13:56,774 INFO L272 TraceCheckUtils]: 4: Hoare triple {3855#true} call #t~ret1 := main(); {3855#true} is VALID [2022-04-15 06:13:56,774 INFO L290 TraceCheckUtils]: 5: Hoare triple {3855#true} ~x~0 := 0;~y~0 := 50; {3885#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:13:56,775 INFO L290 TraceCheckUtils]: 6: Hoare triple {3885#(and (<= main_~x~0 0) (= main_~y~0 50))} [106] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_280 v_main_~x~0_279))) (or (and .cse0 (not (< v_main_~x~0_280 50))) (and (< v_main_~x~0_279 51) (< v_main_~x~0_280 v_main_~x~0_279)) .cse0)) InVars {main_~x~0=v_main_~x~0_280} OutVars{main_~x~0=v_main_~x~0_279} AuxVars[] AssignedVars[main_~x~0] {3889#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:13:56,775 INFO L290 TraceCheckUtils]: 7: Hoare triple {3889#(and (= main_~y~0 50) (< main_~x~0 51))} [107] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3889#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:13:56,776 INFO L290 TraceCheckUtils]: 8: Hoare triple {3889#(and (= main_~y~0 50) (< main_~x~0 51))} [108] L28-2-->L27-2_primed: Formula: (let ((.cse1 (= v_main_~x~0_282 v_main_~x~0_281)) (.cse0 (<= 50 v_main_~x~0_282)) (.cse2 (= v_main_~y~0_172 v_main_~y~0_171))) (or (and (= (+ v_main_~x~0_281 v_main_~y~0_172) (+ v_main_~x~0_282 v_main_~y~0_171)) (< v_main_~x~0_282 v_main_~x~0_281) .cse0 (< v_main_~x~0_281 101)) (and .cse1 .cse2) (and .cse1 (or (not (< v_main_~x~0_282 100)) (not .cse0)) .cse2))) InVars {main_~x~0=v_main_~x~0_282, main_~y~0=v_main_~y~0_172} OutVars{main_~x~0=v_main_~x~0_281, main_~y~0=v_main_~y~0_171} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {3896#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:13:56,777 INFO L290 TraceCheckUtils]: 9: Hoare triple {3896#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [105] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {3863#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:56,778 INFO L272 TraceCheckUtils]: 10: Hoare triple {3863#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {3903#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:13:56,778 INFO L290 TraceCheckUtils]: 11: Hoare triple {3903#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {3907#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:13:56,778 INFO L290 TraceCheckUtils]: 12: Hoare triple {3907#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {3856#false} is VALID [2022-04-15 06:13:56,778 INFO L290 TraceCheckUtils]: 13: Hoare triple {3856#false} assume !false; {3856#false} is VALID [2022-04-15 06:13:56,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:56,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:13:57,291 INFO L290 TraceCheckUtils]: 13: Hoare triple {3856#false} assume !false; {3856#false} is VALID [2022-04-15 06:13:57,292 INFO L290 TraceCheckUtils]: 12: Hoare triple {3907#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {3856#false} is VALID [2022-04-15 06:13:57,293 INFO L290 TraceCheckUtils]: 11: Hoare triple {3903#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {3907#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:13:57,293 INFO L272 TraceCheckUtils]: 10: Hoare triple {3863#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {3903#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:13:57,294 INFO L290 TraceCheckUtils]: 9: Hoare triple {3926#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [105] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {3863#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:13:57,295 INFO L290 TraceCheckUtils]: 8: Hoare triple {3930#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [108] L28-2-->L27-2_primed: Formula: (let ((.cse1 (= v_main_~x~0_282 v_main_~x~0_281)) (.cse0 (<= 50 v_main_~x~0_282)) (.cse2 (= v_main_~y~0_172 v_main_~y~0_171))) (or (and (= (+ v_main_~x~0_281 v_main_~y~0_172) (+ v_main_~x~0_282 v_main_~y~0_171)) (< v_main_~x~0_282 v_main_~x~0_281) .cse0 (< v_main_~x~0_281 101)) (and .cse1 .cse2) (and .cse1 (or (not (< v_main_~x~0_282 100)) (not .cse0)) .cse2))) InVars {main_~x~0=v_main_~x~0_282, main_~y~0=v_main_~y~0_172} OutVars{main_~x~0=v_main_~x~0_281, main_~y~0=v_main_~y~0_171} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {3926#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:13:57,296 INFO L290 TraceCheckUtils]: 7: Hoare triple {3930#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [107] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3930#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:13:57,297 INFO L290 TraceCheckUtils]: 6: Hoare triple {3937#(and (<= 50 main_~y~0) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [106] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_280 v_main_~x~0_279))) (or (and .cse0 (not (< v_main_~x~0_280 50))) (and (< v_main_~x~0_279 51) (< v_main_~x~0_280 v_main_~x~0_279)) .cse0)) InVars {main_~x~0=v_main_~x~0_280} OutVars{main_~x~0=v_main_~x~0_279} AuxVars[] AssignedVars[main_~x~0] {3930#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:13:57,297 INFO L290 TraceCheckUtils]: 5: Hoare triple {3855#true} ~x~0 := 0;~y~0 := 50; {3937#(and (<= 50 main_~y~0) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:13:57,297 INFO L272 TraceCheckUtils]: 4: Hoare triple {3855#true} call #t~ret1 := main(); {3855#true} is VALID [2022-04-15 06:13:57,297 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {3855#true} {3855#true} #56#return; {3855#true} is VALID [2022-04-15 06:13:57,297 INFO L290 TraceCheckUtils]: 2: Hoare triple {3855#true} assume true; {3855#true} is VALID [2022-04-15 06:13:57,298 INFO L290 TraceCheckUtils]: 1: Hoare triple {3855#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {3855#true} is VALID [2022-04-15 06:13:57,298 INFO L272 TraceCheckUtils]: 0: Hoare triple {3855#true} call ULTIMATE.init(); {3855#true} is VALID [2022-04-15 06:13:57,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:13:57,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777703836] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:13:57,298 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:13:57,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:13:57,894 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:13:57,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1941492794] [2022-04-15 06:13:57,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1941492794] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:13:57,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:13:57,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-04-15 06:13:57,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490903988] [2022-04-15 06:13:57,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:13:57,895 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.736842105263158) internal successors, (33), 18 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2022-04-15 06:13:57,895 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:13:57,895 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 20 states, 19 states have (on average 1.736842105263158) internal successors, (33), 18 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:57,944 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 37 edges. 37 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:57,944 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-15 06:13:57,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:13:57,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-15 06:13:57,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=757, Unknown=0, NotChecked=0, Total=930 [2022-04-15 06:13:57,945 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 20 states, 19 states have (on average 1.736842105263158) internal successors, (33), 18 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:59,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:59,695 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2022-04-15 06:13:59,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-04-15 06:13:59,695 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.736842105263158) internal successors, (33), 18 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2022-04-15 06:13:59,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:13:59,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.736842105263158) internal successors, (33), 18 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:59,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 53 transitions. [2022-04-15 06:13:59,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.736842105263158) internal successors, (33), 18 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:59,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 53 transitions. [2022-04-15 06:13:59,697 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 17 states and 53 transitions. [2022-04-15 06:13:59,775 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 53 edges. 53 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:59,776 INFO L225 Difference]: With dead ends: 48 [2022-04-15 06:13:59,776 INFO L226 Difference]: Without dead ends: 41 [2022-04-15 06:13:59,777 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=305, Invalid=1675, Unknown=0, NotChecked=0, Total=1980 [2022-04-15 06:13:59,778 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 22 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-15 06:13:59,778 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 93 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-15 06:13:59,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-04-15 06:13:59,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-04-15 06:13:59,878 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:13:59,879 INFO L82 GeneralOperation]: Start isEquivalent. First operand 41 states. Second operand has 41 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:59,879 INFO L74 IsIncluded]: Start isIncluded. First operand 41 states. Second operand has 41 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:59,879 INFO L87 Difference]: Start difference. First operand 41 states. Second operand has 41 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:59,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:59,880 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2022-04-15 06:13:59,880 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2022-04-15 06:13:59,880 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:13:59,880 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:13:59,880 INFO L74 IsIncluded]: Start isIncluded. First operand has 41 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 41 states. [2022-04-15 06:13:59,880 INFO L87 Difference]: Start difference. First operand has 41 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 41 states. [2022-04-15 06:13:59,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:13:59,881 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2022-04-15 06:13:59,881 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2022-04-15 06:13:59,881 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:13:59,881 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:13:59,882 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:13:59,882 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:13:59,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:59,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2022-04-15 06:13:59,882 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 37 [2022-04-15 06:13:59,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:13:59,883 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2022-04-15 06:13:59,883 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.736842105263158) internal successors, (33), 18 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:13:59,884 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 41 states and 43 transitions. [2022-04-15 06:13:59,939 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 43 edges. 43 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:13:59,940 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2022-04-15 06:13:59,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-15 06:13:59,940 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:13:59,940 INFO L499 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:13:59,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-04-15 06:14:00,140 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-04-15 06:14:00,141 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:14:00,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:14:00,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1166044178, now seen corresponding path program 13 times [2022-04-15 06:14:00,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:14:00,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [920983217] [2022-04-15 06:14:04,219 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-15 06:14:04,279 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:14:08,467 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-15 06:14:08,598 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:14:08,600 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:14:08,602 INFO L85 PathProgramCache]: Analyzing trace with hash 2080407244, now seen corresponding path program 1 times [2022-04-15 06:14:08,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:14:08,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088126625] [2022-04-15 06:14:08,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:14:08,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:14:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:14:08,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:14:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:14:08,737 INFO L290 TraceCheckUtils]: 0: Hoare triple {4271#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {4260#true} is VALID [2022-04-15 06:14:08,737 INFO L290 TraceCheckUtils]: 1: Hoare triple {4260#true} assume true; {4260#true} is VALID [2022-04-15 06:14:08,737 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {4260#true} {4260#true} #56#return; {4260#true} is VALID [2022-04-15 06:14:08,738 INFO L272 TraceCheckUtils]: 0: Hoare triple {4260#true} call ULTIMATE.init(); {4271#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:14:08,738 INFO L290 TraceCheckUtils]: 1: Hoare triple {4271#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {4260#true} is VALID [2022-04-15 06:14:08,738 INFO L290 TraceCheckUtils]: 2: Hoare triple {4260#true} assume true; {4260#true} is VALID [2022-04-15 06:14:08,738 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {4260#true} {4260#true} #56#return; {4260#true} is VALID [2022-04-15 06:14:08,738 INFO L272 TraceCheckUtils]: 4: Hoare triple {4260#true} call #t~ret1 := main(); {4260#true} is VALID [2022-04-15 06:14:08,738 INFO L290 TraceCheckUtils]: 5: Hoare triple {4260#true} ~x~0 := 0;~y~0 := 50; {4265#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:14:08,739 INFO L290 TraceCheckUtils]: 6: Hoare triple {4265#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [110] L28-2-->L27-2_primed: Formula: (or (and (< v_main_~x~0_309 51) (< v_main_~x~0_310 v_main_~x~0_309)) (and (not (< v_main_~x~0_310 50)) (= v_main_~x~0_309 v_main_~x~0_310)) (= v_main_~x~0_310 v_main_~x~0_309)) InVars {main_~x~0=v_main_~x~0_310} OutVars{main_~x~0=v_main_~x~0_309} AuxVars[] AssignedVars[main_~x~0] {4266#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:14:08,740 INFO L290 TraceCheckUtils]: 7: Hoare triple {4266#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [111] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {4266#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:14:08,741 INFO L290 TraceCheckUtils]: 8: Hoare triple {4266#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [112] L28-2-->L27-2_primed: Formula: (let ((.cse1 (= v_main_~y~0_193 v_main_~y~0_192)) (.cse2 (= v_main_~x~0_312 v_main_~x~0_311)) (.cse0 (<= 50 v_main_~x~0_312))) (or (and .cse0 (< v_main_~x~0_312 v_main_~x~0_311) (= (+ v_main_~x~0_311 v_main_~y~0_193) (+ v_main_~x~0_312 v_main_~y~0_192)) (< v_main_~x~0_311 101)) (and .cse1 .cse2) (and .cse1 .cse2 (or (not (< v_main_~x~0_312 100)) (not .cse0))))) InVars {main_~x~0=v_main_~x~0_312, main_~y~0=v_main_~y~0_193} OutVars{main_~x~0=v_main_~x~0_311, main_~y~0=v_main_~y~0_192} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {4267#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:14:08,741 INFO L290 TraceCheckUtils]: 9: Hoare triple {4267#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [109] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {4268#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:14:08,742 INFO L272 TraceCheckUtils]: 10: Hoare triple {4268#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {4269#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:14:08,742 INFO L290 TraceCheckUtils]: 11: Hoare triple {4269#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {4270#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:14:08,743 INFO L290 TraceCheckUtils]: 12: Hoare triple {4270#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {4261#false} is VALID [2022-04-15 06:14:08,743 INFO L290 TraceCheckUtils]: 13: Hoare triple {4261#false} assume !false; {4261#false} is VALID [2022-04-15 06:14:08,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:14:08,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:14:08,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088126625] [2022-04-15 06:14:08,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088126625] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:14:08,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104742066] [2022-04-15 06:14:08,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:14:08,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:14:08,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:14:08,745 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:14:08,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-04-15 06:14:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:14:08,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:14:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:14:08,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:14:09,137 INFO L272 TraceCheckUtils]: 0: Hoare triple {4260#true} call ULTIMATE.init(); {4260#true} is VALID [2022-04-15 06:14:09,138 INFO L290 TraceCheckUtils]: 1: Hoare triple {4260#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {4260#true} is VALID [2022-04-15 06:14:09,138 INFO L290 TraceCheckUtils]: 2: Hoare triple {4260#true} assume true; {4260#true} is VALID [2022-04-15 06:14:09,138 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {4260#true} {4260#true} #56#return; {4260#true} is VALID [2022-04-15 06:14:09,138 INFO L272 TraceCheckUtils]: 4: Hoare triple {4260#true} call #t~ret1 := main(); {4260#true} is VALID [2022-04-15 06:14:09,138 INFO L290 TraceCheckUtils]: 5: Hoare triple {4260#true} ~x~0 := 0;~y~0 := 50; {4290#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:14:09,139 INFO L290 TraceCheckUtils]: 6: Hoare triple {4290#(and (<= main_~x~0 0) (= main_~y~0 50))} [110] L28-2-->L27-2_primed: Formula: (or (and (< v_main_~x~0_309 51) (< v_main_~x~0_310 v_main_~x~0_309)) (and (not (< v_main_~x~0_310 50)) (= v_main_~x~0_309 v_main_~x~0_310)) (= v_main_~x~0_310 v_main_~x~0_309)) InVars {main_~x~0=v_main_~x~0_310} OutVars{main_~x~0=v_main_~x~0_309} AuxVars[] AssignedVars[main_~x~0] {4294#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:14:09,141 INFO L290 TraceCheckUtils]: 7: Hoare triple {4294#(and (= main_~y~0 50) (< main_~x~0 51))} [111] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {4294#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:14:09,142 INFO L290 TraceCheckUtils]: 8: Hoare triple {4294#(and (= main_~y~0 50) (< main_~x~0 51))} [112] L28-2-->L27-2_primed: Formula: (let ((.cse1 (= v_main_~y~0_193 v_main_~y~0_192)) (.cse2 (= v_main_~x~0_312 v_main_~x~0_311)) (.cse0 (<= 50 v_main_~x~0_312))) (or (and .cse0 (< v_main_~x~0_312 v_main_~x~0_311) (= (+ v_main_~x~0_311 v_main_~y~0_193) (+ v_main_~x~0_312 v_main_~y~0_192)) (< v_main_~x~0_311 101)) (and .cse1 .cse2) (and .cse1 .cse2 (or (not (< v_main_~x~0_312 100)) (not .cse0))))) InVars {main_~x~0=v_main_~x~0_312, main_~y~0=v_main_~y~0_193} OutVars{main_~x~0=v_main_~x~0_311, main_~y~0=v_main_~y~0_192} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {4301#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:14:09,142 INFO L290 TraceCheckUtils]: 9: Hoare triple {4301#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [109] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {4268#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:14:09,143 INFO L272 TraceCheckUtils]: 10: Hoare triple {4268#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {4308#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:14:09,144 INFO L290 TraceCheckUtils]: 11: Hoare triple {4308#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {4312#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:14:09,144 INFO L290 TraceCheckUtils]: 12: Hoare triple {4312#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {4261#false} is VALID [2022-04-15 06:14:09,144 INFO L290 TraceCheckUtils]: 13: Hoare triple {4261#false} assume !false; {4261#false} is VALID [2022-04-15 06:14:09,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:14:09,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:14:09,668 INFO L290 TraceCheckUtils]: 13: Hoare triple {4261#false} assume !false; {4261#false} is VALID [2022-04-15 06:14:09,668 INFO L290 TraceCheckUtils]: 12: Hoare triple {4312#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {4261#false} is VALID [2022-04-15 06:14:09,669 INFO L290 TraceCheckUtils]: 11: Hoare triple {4308#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {4312#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:14:09,669 INFO L272 TraceCheckUtils]: 10: Hoare triple {4268#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {4308#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:14:09,670 INFO L290 TraceCheckUtils]: 9: Hoare triple {4331#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [109] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {4268#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:14:09,671 INFO L290 TraceCheckUtils]: 8: Hoare triple {4335#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [112] L28-2-->L27-2_primed: Formula: (let ((.cse1 (= v_main_~y~0_193 v_main_~y~0_192)) (.cse2 (= v_main_~x~0_312 v_main_~x~0_311)) (.cse0 (<= 50 v_main_~x~0_312))) (or (and .cse0 (< v_main_~x~0_312 v_main_~x~0_311) (= (+ v_main_~x~0_311 v_main_~y~0_193) (+ v_main_~x~0_312 v_main_~y~0_192)) (< v_main_~x~0_311 101)) (and .cse1 .cse2) (and .cse1 .cse2 (or (not (< v_main_~x~0_312 100)) (not .cse0))))) InVars {main_~x~0=v_main_~x~0_312, main_~y~0=v_main_~y~0_193} OutVars{main_~x~0=v_main_~x~0_311, main_~y~0=v_main_~y~0_192} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {4331#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:14:09,672 INFO L290 TraceCheckUtils]: 7: Hoare triple {4335#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [111] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {4335#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:14:09,673 INFO L290 TraceCheckUtils]: 6: Hoare triple {4342#(and (<= 50 main_~y~0) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [110] L28-2-->L27-2_primed: Formula: (or (and (< v_main_~x~0_309 51) (< v_main_~x~0_310 v_main_~x~0_309)) (and (not (< v_main_~x~0_310 50)) (= v_main_~x~0_309 v_main_~x~0_310)) (= v_main_~x~0_310 v_main_~x~0_309)) InVars {main_~x~0=v_main_~x~0_310} OutVars{main_~x~0=v_main_~x~0_309} AuxVars[] AssignedVars[main_~x~0] {4335#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:14:09,673 INFO L290 TraceCheckUtils]: 5: Hoare triple {4260#true} ~x~0 := 0;~y~0 := 50; {4342#(and (<= 50 main_~y~0) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:14:09,674 INFO L272 TraceCheckUtils]: 4: Hoare triple {4260#true} call #t~ret1 := main(); {4260#true} is VALID [2022-04-15 06:14:09,674 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {4260#true} {4260#true} #56#return; {4260#true} is VALID [2022-04-15 06:14:09,674 INFO L290 TraceCheckUtils]: 2: Hoare triple {4260#true} assume true; {4260#true} is VALID [2022-04-15 06:14:09,674 INFO L290 TraceCheckUtils]: 1: Hoare triple {4260#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {4260#true} is VALID [2022-04-15 06:14:09,674 INFO L272 TraceCheckUtils]: 0: Hoare triple {4260#true} call ULTIMATE.init(); {4260#true} is VALID [2022-04-15 06:14:09,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:14:09,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104742066] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:14:09,674 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:14:09,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:14:10,503 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:14:10,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [920983217] [2022-04-15 06:14:10,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [920983217] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:14:10,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:14:10,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-04-15 06:14:10,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296936310] [2022-04-15 06:14:10,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:14:10,504 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.75) internal successors, (35), 19 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2022-04-15 06:14:10,505 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:14:10,505 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 21 states, 20 states have (on average 1.75) internal successors, (35), 19 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:10,545 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 39 edges. 39 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:14:10,545 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-15 06:14:10,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:14:10,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-15 06:14:10,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=812, Unknown=0, NotChecked=0, Total=992 [2022-04-15 06:14:10,547 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 21 states, 20 states have (on average 1.75) internal successors, (35), 19 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:12,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:14:12,167 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2022-04-15 06:14:12,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-15 06:14:12,167 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.75) internal successors, (35), 19 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2022-04-15 06:14:12,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:14:12,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.75) internal successors, (35), 19 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:12,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 55 transitions. [2022-04-15 06:14:12,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.75) internal successors, (35), 19 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:12,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 55 transitions. [2022-04-15 06:14:12,169 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 18 states and 55 transitions. [2022-04-15 06:14:12,238 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 55 edges. 55 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:14:12,239 INFO L225 Difference]: With dead ends: 50 [2022-04-15 06:14:12,239 INFO L226 Difference]: Without dead ends: 43 [2022-04-15 06:14:12,240 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=321, Invalid=1841, Unknown=0, NotChecked=0, Total=2162 [2022-04-15 06:14:12,240 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 23 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-15 06:14:12,241 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 98 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-15 06:14:12,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-04-15 06:14:12,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-04-15 06:14:12,309 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:14:12,310 INFO L82 GeneralOperation]: Start isEquivalent. First operand 43 states. Second operand has 43 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:12,310 INFO L74 IsIncluded]: Start isIncluded. First operand 43 states. Second operand has 43 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:12,310 INFO L87 Difference]: Start difference. First operand 43 states. Second operand has 43 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:12,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:14:12,311 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2022-04-15 06:14:12,311 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2022-04-15 06:14:12,311 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:14:12,311 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:14:12,311 INFO L74 IsIncluded]: Start isIncluded. First operand has 43 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 43 states. [2022-04-15 06:14:12,311 INFO L87 Difference]: Start difference. First operand has 43 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 43 states. [2022-04-15 06:14:12,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:14:12,312 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2022-04-15 06:14:12,312 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2022-04-15 06:14:12,312 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:14:12,312 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:14:12,313 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:14:12,313 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:14:12,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:12,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2022-04-15 06:14:12,313 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 39 [2022-04-15 06:14:12,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:14:12,314 INFO L478 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2022-04-15 06:14:12,314 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.75) internal successors, (35), 19 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:12,314 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 43 states and 45 transitions. [2022-04-15 06:14:12,359 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 45 edges. 45 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:14:12,359 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2022-04-15 06:14:12,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-04-15 06:14:12,360 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:14:12,360 INFO L499 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:14:12,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-04-15 06:14:12,560 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-04-15 06:14:12,561 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:14:12,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:14:12,561 INFO L85 PathProgramCache]: Analyzing trace with hash 651663085, now seen corresponding path program 14 times [2022-04-15 06:14:12,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:14:12,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1248721423] [2022-04-15 06:14:14,691 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:14:14,928 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:14:14,930 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:14:14,932 INFO L85 PathProgramCache]: Analyzing trace with hash -165027892, now seen corresponding path program 1 times [2022-04-15 06:14:14,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:14:14,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136882671] [2022-04-15 06:14:14,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:14:14,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:14:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:14:15,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:14:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:14:15,102 INFO L290 TraceCheckUtils]: 0: Hoare triple {4691#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {4680#true} is VALID [2022-04-15 06:14:15,103 INFO L290 TraceCheckUtils]: 1: Hoare triple {4680#true} assume true; {4680#true} is VALID [2022-04-15 06:14:15,103 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {4680#true} {4680#true} #56#return; {4680#true} is VALID [2022-04-15 06:14:15,104 INFO L272 TraceCheckUtils]: 0: Hoare triple {4680#true} call ULTIMATE.init(); {4691#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:14:15,104 INFO L290 TraceCheckUtils]: 1: Hoare triple {4691#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {4680#true} is VALID [2022-04-15 06:14:15,104 INFO L290 TraceCheckUtils]: 2: Hoare triple {4680#true} assume true; {4680#true} is VALID [2022-04-15 06:14:15,104 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {4680#true} {4680#true} #56#return; {4680#true} is VALID [2022-04-15 06:14:15,104 INFO L272 TraceCheckUtils]: 4: Hoare triple {4680#true} call #t~ret1 := main(); {4680#true} is VALID [2022-04-15 06:14:15,104 INFO L290 TraceCheckUtils]: 5: Hoare triple {4680#true} ~x~0 := 0;~y~0 := 50; {4685#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:14:15,105 INFO L290 TraceCheckUtils]: 6: Hoare triple {4685#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [114] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_341 v_main_~x~0_340))) (or .cse0 (and (< v_main_~x~0_340 51) (< v_main_~x~0_341 v_main_~x~0_340)) (and (not (< v_main_~x~0_341 50)) .cse0))) InVars {main_~x~0=v_main_~x~0_341} OutVars{main_~x~0=v_main_~x~0_340} AuxVars[] AssignedVars[main_~x~0] {4686#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:14:15,106 INFO L290 TraceCheckUtils]: 7: Hoare triple {4686#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [115] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {4686#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:14:15,107 INFO L290 TraceCheckUtils]: 8: Hoare triple {4686#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [116] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_215 v_main_~y~0_214)) (.cse2 (<= 50 v_main_~x~0_343)) (.cse1 (= v_main_~x~0_343 v_main_~x~0_342))) (or (and .cse0 .cse1) (and (= (+ v_main_~x~0_343 v_main_~y~0_214) (+ v_main_~x~0_342 v_main_~y~0_215)) .cse2 (< v_main_~x~0_343 v_main_~x~0_342) (< v_main_~x~0_342 101)) (and .cse0 (or (not (< v_main_~x~0_343 100)) (not .cse2)) .cse1))) InVars {main_~x~0=v_main_~x~0_343, main_~y~0=v_main_~y~0_215} OutVars{main_~x~0=v_main_~x~0_342, main_~y~0=v_main_~y~0_214} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {4687#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:14:15,107 INFO L290 TraceCheckUtils]: 9: Hoare triple {4687#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [113] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {4688#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:14:15,108 INFO L272 TraceCheckUtils]: 10: Hoare triple {4688#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {4689#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:14:15,108 INFO L290 TraceCheckUtils]: 11: Hoare triple {4689#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {4690#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:14:15,109 INFO L290 TraceCheckUtils]: 12: Hoare triple {4690#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {4681#false} is VALID [2022-04-15 06:14:15,109 INFO L290 TraceCheckUtils]: 13: Hoare triple {4681#false} assume !false; {4681#false} is VALID [2022-04-15 06:14:15,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:14:15,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:14:15,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136882671] [2022-04-15 06:14:15,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136882671] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:14:15,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404672114] [2022-04-15 06:14:15,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:14:15,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:14:15,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:14:15,120 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:14:15,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-04-15 06:14:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:14:15,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:14:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:14:15,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:14:15,717 INFO L272 TraceCheckUtils]: 0: Hoare triple {4680#true} call ULTIMATE.init(); {4680#true} is VALID [2022-04-15 06:14:15,717 INFO L290 TraceCheckUtils]: 1: Hoare triple {4680#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {4680#true} is VALID [2022-04-15 06:14:15,717 INFO L290 TraceCheckUtils]: 2: Hoare triple {4680#true} assume true; {4680#true} is VALID [2022-04-15 06:14:15,717 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {4680#true} {4680#true} #56#return; {4680#true} is VALID [2022-04-15 06:14:15,717 INFO L272 TraceCheckUtils]: 4: Hoare triple {4680#true} call #t~ret1 := main(); {4680#true} is VALID [2022-04-15 06:14:15,718 INFO L290 TraceCheckUtils]: 5: Hoare triple {4680#true} ~x~0 := 0;~y~0 := 50; {4710#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:14:15,723 INFO L290 TraceCheckUtils]: 6: Hoare triple {4710#(and (<= main_~x~0 0) (= main_~y~0 50))} [114] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_341 v_main_~x~0_340))) (or .cse0 (and (< v_main_~x~0_340 51) (< v_main_~x~0_341 v_main_~x~0_340)) (and (not (< v_main_~x~0_341 50)) .cse0))) InVars {main_~x~0=v_main_~x~0_341} OutVars{main_~x~0=v_main_~x~0_340} AuxVars[] AssignedVars[main_~x~0] {4714#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:14:15,723 INFO L290 TraceCheckUtils]: 7: Hoare triple {4714#(and (= main_~y~0 50) (< main_~x~0 51))} [115] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {4714#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:14:15,725 INFO L290 TraceCheckUtils]: 8: Hoare triple {4714#(and (= main_~y~0 50) (< main_~x~0 51))} [116] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_215 v_main_~y~0_214)) (.cse2 (<= 50 v_main_~x~0_343)) (.cse1 (= v_main_~x~0_343 v_main_~x~0_342))) (or (and .cse0 .cse1) (and (= (+ v_main_~x~0_343 v_main_~y~0_214) (+ v_main_~x~0_342 v_main_~y~0_215)) .cse2 (< v_main_~x~0_343 v_main_~x~0_342) (< v_main_~x~0_342 101)) (and .cse0 (or (not (< v_main_~x~0_343 100)) (not .cse2)) .cse1))) InVars {main_~x~0=v_main_~x~0_343, main_~y~0=v_main_~y~0_215} OutVars{main_~x~0=v_main_~x~0_342, main_~y~0=v_main_~y~0_214} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {4721#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:14:15,727 INFO L290 TraceCheckUtils]: 9: Hoare triple {4721#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [113] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {4688#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:14:15,727 INFO L272 TraceCheckUtils]: 10: Hoare triple {4688#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {4728#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:14:15,728 INFO L290 TraceCheckUtils]: 11: Hoare triple {4728#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {4732#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:14:15,728 INFO L290 TraceCheckUtils]: 12: Hoare triple {4732#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {4681#false} is VALID [2022-04-15 06:14:15,728 INFO L290 TraceCheckUtils]: 13: Hoare triple {4681#false} assume !false; {4681#false} is VALID [2022-04-15 06:14:15,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:14:15,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:14:16,263 INFO L290 TraceCheckUtils]: 13: Hoare triple {4681#false} assume !false; {4681#false} is VALID [2022-04-15 06:14:16,264 INFO L290 TraceCheckUtils]: 12: Hoare triple {4732#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {4681#false} is VALID [2022-04-15 06:14:16,264 INFO L290 TraceCheckUtils]: 11: Hoare triple {4728#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {4732#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:14:16,265 INFO L272 TraceCheckUtils]: 10: Hoare triple {4688#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {4728#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:14:16,265 INFO L290 TraceCheckUtils]: 9: Hoare triple {4751#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [113] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {4688#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:14:16,267 INFO L290 TraceCheckUtils]: 8: Hoare triple {4755#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [116] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_215 v_main_~y~0_214)) (.cse2 (<= 50 v_main_~x~0_343)) (.cse1 (= v_main_~x~0_343 v_main_~x~0_342))) (or (and .cse0 .cse1) (and (= (+ v_main_~x~0_343 v_main_~y~0_214) (+ v_main_~x~0_342 v_main_~y~0_215)) .cse2 (< v_main_~x~0_343 v_main_~x~0_342) (< v_main_~x~0_342 101)) (and .cse0 (or (not (< v_main_~x~0_343 100)) (not .cse2)) .cse1))) InVars {main_~x~0=v_main_~x~0_343, main_~y~0=v_main_~y~0_215} OutVars{main_~x~0=v_main_~x~0_342, main_~y~0=v_main_~y~0_214} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {4751#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:14:16,267 INFO L290 TraceCheckUtils]: 7: Hoare triple {4755#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [115] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {4755#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:14:16,271 INFO L290 TraceCheckUtils]: 6: Hoare triple {4762#(and (<= 50 main_~y~0) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [114] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_341 v_main_~x~0_340))) (or .cse0 (and (< v_main_~x~0_340 51) (< v_main_~x~0_341 v_main_~x~0_340)) (and (not (< v_main_~x~0_341 50)) .cse0))) InVars {main_~x~0=v_main_~x~0_341} OutVars{main_~x~0=v_main_~x~0_340} AuxVars[] AssignedVars[main_~x~0] {4755#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:14:16,272 INFO L290 TraceCheckUtils]: 5: Hoare triple {4680#true} ~x~0 := 0;~y~0 := 50; {4762#(and (<= 50 main_~y~0) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:14:16,272 INFO L272 TraceCheckUtils]: 4: Hoare triple {4680#true} call #t~ret1 := main(); {4680#true} is VALID [2022-04-15 06:14:16,272 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {4680#true} {4680#true} #56#return; {4680#true} is VALID [2022-04-15 06:14:16,272 INFO L290 TraceCheckUtils]: 2: Hoare triple {4680#true} assume true; {4680#true} is VALID [2022-04-15 06:14:16,272 INFO L290 TraceCheckUtils]: 1: Hoare triple {4680#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {4680#true} is VALID [2022-04-15 06:14:16,272 INFO L272 TraceCheckUtils]: 0: Hoare triple {4680#true} call ULTIMATE.init(); {4680#true} is VALID [2022-04-15 06:14:16,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:14:16,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404672114] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:14:16,273 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:14:16,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:14:17,071 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:14:17,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1248721423] [2022-04-15 06:14:17,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1248721423] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:14:17,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:14:17,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-04-15 06:14:17,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721176808] [2022-04-15 06:14:17,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:14:17,072 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 20 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2022-04-15 06:14:17,072 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:14:17,072 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 22 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 20 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:17,109 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:14:17,109 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-04-15 06:14:17,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:14:17,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-04-15 06:14:17,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=869, Unknown=0, NotChecked=0, Total=1056 [2022-04-15 06:14:17,111 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 22 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 20 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:18,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:14:18,907 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2022-04-15 06:14:18,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-15 06:14:18,907 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 20 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2022-04-15 06:14:18,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:14:18,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 20 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:18,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 57 transitions. [2022-04-15 06:14:18,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 20 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:18,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 57 transitions. [2022-04-15 06:14:18,909 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 19 states and 57 transitions. [2022-04-15 06:14:19,058 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 57 edges. 57 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:14:19,058 INFO L225 Difference]: With dead ends: 52 [2022-04-15 06:14:19,058 INFO L226 Difference]: Without dead ends: 45 [2022-04-15 06:14:19,059 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=337, Invalid=2015, Unknown=0, NotChecked=0, Total=2352 [2022-04-15 06:14:19,060 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 24 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-15 06:14:19,060 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 108 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-15 06:14:19,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-04-15 06:14:19,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-04-15 06:14:19,135 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:14:19,136 INFO L82 GeneralOperation]: Start isEquivalent. First operand 45 states. Second operand has 45 states, 40 states have (on average 1.075) internal successors, (43), 40 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:19,136 INFO L74 IsIncluded]: Start isIncluded. First operand 45 states. Second operand has 45 states, 40 states have (on average 1.075) internal successors, (43), 40 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:19,136 INFO L87 Difference]: Start difference. First operand 45 states. Second operand has 45 states, 40 states have (on average 1.075) internal successors, (43), 40 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:19,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:14:19,137 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2022-04-15 06:14:19,137 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2022-04-15 06:14:19,137 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:14:19,137 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:14:19,137 INFO L74 IsIncluded]: Start isIncluded. First operand has 45 states, 40 states have (on average 1.075) internal successors, (43), 40 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 45 states. [2022-04-15 06:14:19,137 INFO L87 Difference]: Start difference. First operand has 45 states, 40 states have (on average 1.075) internal successors, (43), 40 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 45 states. [2022-04-15 06:14:19,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:14:19,138 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2022-04-15 06:14:19,138 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2022-04-15 06:14:19,138 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:14:19,138 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:14:19,138 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:14:19,139 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:14:19,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.075) internal successors, (43), 40 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:19,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2022-04-15 06:14:19,139 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 41 [2022-04-15 06:14:19,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:14:19,140 INFO L478 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2022-04-15 06:14:19,140 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 20 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:19,140 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 45 states and 47 transitions. [2022-04-15 06:14:19,205 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 47 edges. 47 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:14:19,205 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2022-04-15 06:14:19,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-04-15 06:14:19,206 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:14:19,206 INFO L499 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:14:19,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-04-15 06:14:19,406 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:14:19,406 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:14:19,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:14:19,407 INFO L85 PathProgramCache]: Analyzing trace with hash 252671752, now seen corresponding path program 15 times [2022-04-15 06:14:19,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:14:19,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [738905422] [2022-04-15 06:14:23,477 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-15 06:14:23,577 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:14:23,885 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:14:23,886 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:14:23,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1884504268, now seen corresponding path program 1 times [2022-04-15 06:14:23,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:14:23,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559533498] [2022-04-15 06:14:23,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:14:23,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:14:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:14:24,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:14:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:14:24,020 INFO L290 TraceCheckUtils]: 0: Hoare triple {5126#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {5115#true} is VALID [2022-04-15 06:14:24,021 INFO L290 TraceCheckUtils]: 1: Hoare triple {5115#true} assume true; {5115#true} is VALID [2022-04-15 06:14:24,021 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {5115#true} {5115#true} #56#return; {5115#true} is VALID [2022-04-15 06:14:24,021 INFO L272 TraceCheckUtils]: 0: Hoare triple {5115#true} call ULTIMATE.init(); {5126#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:14:24,022 INFO L290 TraceCheckUtils]: 1: Hoare triple {5126#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {5115#true} is VALID [2022-04-15 06:14:24,022 INFO L290 TraceCheckUtils]: 2: Hoare triple {5115#true} assume true; {5115#true} is VALID [2022-04-15 06:14:24,022 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {5115#true} {5115#true} #56#return; {5115#true} is VALID [2022-04-15 06:14:24,022 INFO L272 TraceCheckUtils]: 4: Hoare triple {5115#true} call #t~ret1 := main(); {5115#true} is VALID [2022-04-15 06:14:24,022 INFO L290 TraceCheckUtils]: 5: Hoare triple {5115#true} ~x~0 := 0;~y~0 := 50; {5120#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:14:24,023 INFO L290 TraceCheckUtils]: 6: Hoare triple {5120#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [118] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_373 v_main_~x~0_372))) (or .cse0 (and .cse0 (not (< v_main_~x~0_373 50))) (and (< v_main_~x~0_373 v_main_~x~0_372) (< v_main_~x~0_372 51)))) InVars {main_~x~0=v_main_~x~0_373} OutVars{main_~x~0=v_main_~x~0_372} AuxVars[] AssignedVars[main_~x~0] {5121#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:14:24,024 INFO L290 TraceCheckUtils]: 7: Hoare triple {5121#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [119] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {5121#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:14:24,025 INFO L290 TraceCheckUtils]: 8: Hoare triple {5121#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [120] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_238 v_main_~y~0_237)) (.cse1 (= v_main_~x~0_375 v_main_~x~0_374)) (.cse2 (<= 50 v_main_~x~0_375))) (or (and .cse0 .cse1 (or (not .cse2) (not (< v_main_~x~0_375 100)))) (and .cse0 .cse1) (let ((.cse3 (+ v_main_~x~0_375 v_main_~y~0_237))) (and (= .cse3 (+ v_main_~x~0_374 v_main_~y~0_238)) .cse2 (< v_main_~y~0_238 v_main_~y~0_237) (< .cse3 (+ 101 v_main_~y~0_238)))))) InVars {main_~x~0=v_main_~x~0_375, main_~y~0=v_main_~y~0_238} OutVars{main_~x~0=v_main_~x~0_374, main_~y~0=v_main_~y~0_237} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {5122#(or (<= main_~x~0 99) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:14:24,025 INFO L290 TraceCheckUtils]: 9: Hoare triple {5122#(or (<= main_~x~0 99) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [117] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {5123#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:14:24,026 INFO L272 TraceCheckUtils]: 10: Hoare triple {5123#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {5124#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:14:24,026 INFO L290 TraceCheckUtils]: 11: Hoare triple {5124#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {5125#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:14:24,027 INFO L290 TraceCheckUtils]: 12: Hoare triple {5125#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {5116#false} is VALID [2022-04-15 06:14:24,027 INFO L290 TraceCheckUtils]: 13: Hoare triple {5116#false} assume !false; {5116#false} is VALID [2022-04-15 06:14:24,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:14:24,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:14:24,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559533498] [2022-04-15 06:14:24,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559533498] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:14:24,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050191913] [2022-04-15 06:14:24,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:14:24,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:14:24,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:14:24,030 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:14:24,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-04-15 06:14:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:14:24,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:14:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:14:24,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:14:24,488 INFO L272 TraceCheckUtils]: 0: Hoare triple {5115#true} call ULTIMATE.init(); {5115#true} is VALID [2022-04-15 06:14:24,488 INFO L290 TraceCheckUtils]: 1: Hoare triple {5115#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {5115#true} is VALID [2022-04-15 06:14:24,488 INFO L290 TraceCheckUtils]: 2: Hoare triple {5115#true} assume true; {5115#true} is VALID [2022-04-15 06:14:24,489 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {5115#true} {5115#true} #56#return; {5115#true} is VALID [2022-04-15 06:14:24,489 INFO L272 TraceCheckUtils]: 4: Hoare triple {5115#true} call #t~ret1 := main(); {5115#true} is VALID [2022-04-15 06:14:24,489 INFO L290 TraceCheckUtils]: 5: Hoare triple {5115#true} ~x~0 := 0;~y~0 := 50; {5145#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:14:24,490 INFO L290 TraceCheckUtils]: 6: Hoare triple {5145#(and (<= main_~x~0 0) (= main_~y~0 50))} [118] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_373 v_main_~x~0_372))) (or .cse0 (and .cse0 (not (< v_main_~x~0_373 50))) (and (< v_main_~x~0_373 v_main_~x~0_372) (< v_main_~x~0_372 51)))) InVars {main_~x~0=v_main_~x~0_373} OutVars{main_~x~0=v_main_~x~0_372} AuxVars[] AssignedVars[main_~x~0] {5149#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:14:24,490 INFO L290 TraceCheckUtils]: 7: Hoare triple {5149#(and (= main_~y~0 50) (< main_~x~0 51))} [119] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {5149#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:14:24,491 INFO L290 TraceCheckUtils]: 8: Hoare triple {5149#(and (= main_~y~0 50) (< main_~x~0 51))} [120] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_238 v_main_~y~0_237)) (.cse1 (= v_main_~x~0_375 v_main_~x~0_374)) (.cse2 (<= 50 v_main_~x~0_375))) (or (and .cse0 .cse1 (or (not .cse2) (not (< v_main_~x~0_375 100)))) (and .cse0 .cse1) (let ((.cse3 (+ v_main_~x~0_375 v_main_~y~0_237))) (and (= .cse3 (+ v_main_~x~0_374 v_main_~y~0_238)) .cse2 (< v_main_~y~0_238 v_main_~y~0_237) (< .cse3 (+ 101 v_main_~y~0_238)))))) InVars {main_~x~0=v_main_~x~0_375, main_~y~0=v_main_~y~0_238} OutVars{main_~x~0=v_main_~x~0_374, main_~y~0=v_main_~y~0_237} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {5156#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:14:24,492 INFO L290 TraceCheckUtils]: 9: Hoare triple {5156#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [117] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {5123#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:14:24,493 INFO L272 TraceCheckUtils]: 10: Hoare triple {5123#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {5163#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:14:24,493 INFO L290 TraceCheckUtils]: 11: Hoare triple {5163#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {5167#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:14:24,494 INFO L290 TraceCheckUtils]: 12: Hoare triple {5167#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {5116#false} is VALID [2022-04-15 06:14:24,494 INFO L290 TraceCheckUtils]: 13: Hoare triple {5116#false} assume !false; {5116#false} is VALID [2022-04-15 06:14:24,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:14:24,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:14:25,297 INFO L290 TraceCheckUtils]: 13: Hoare triple {5116#false} assume !false; {5116#false} is VALID [2022-04-15 06:14:25,298 INFO L290 TraceCheckUtils]: 12: Hoare triple {5167#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {5116#false} is VALID [2022-04-15 06:14:25,298 INFO L290 TraceCheckUtils]: 11: Hoare triple {5163#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {5167#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:14:25,299 INFO L272 TraceCheckUtils]: 10: Hoare triple {5123#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {5163#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:14:25,300 INFO L290 TraceCheckUtils]: 9: Hoare triple {5122#(or (<= main_~x~0 99) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [117] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {5123#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:14:25,301 INFO L290 TraceCheckUtils]: 8: Hoare triple {5189#(and (or (<= main_~x~0 main_~y~0) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (<= main_~x~0 99) (<= main_~y~0 100)) (or (< 99 main_~y~0) (<= main_~x~0 99)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [120] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_238 v_main_~y~0_237)) (.cse1 (= v_main_~x~0_375 v_main_~x~0_374)) (.cse2 (<= 50 v_main_~x~0_375))) (or (and .cse0 .cse1 (or (not .cse2) (not (< v_main_~x~0_375 100)))) (and .cse0 .cse1) (let ((.cse3 (+ v_main_~x~0_375 v_main_~y~0_237))) (and (= .cse3 (+ v_main_~x~0_374 v_main_~y~0_238)) .cse2 (< v_main_~y~0_238 v_main_~y~0_237) (< .cse3 (+ 101 v_main_~y~0_238)))))) InVars {main_~x~0=v_main_~x~0_375, main_~y~0=v_main_~y~0_238} OutVars{main_~x~0=v_main_~x~0_374, main_~y~0=v_main_~y~0_237} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {5122#(or (<= main_~x~0 99) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:14:25,301 INFO L290 TraceCheckUtils]: 7: Hoare triple {5189#(and (or (<= main_~x~0 main_~y~0) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (<= main_~x~0 99) (<= main_~y~0 100)) (or (< 99 main_~y~0) (<= main_~x~0 99)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [119] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {5189#(and (or (<= main_~x~0 main_~y~0) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (<= main_~x~0 99) (<= main_~y~0 100)) (or (< 99 main_~y~0) (<= main_~x~0 99)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:14:25,315 INFO L290 TraceCheckUtils]: 6: Hoare triple {5196#(and (<= 50 main_~y~0) (or (<= main_~x~0 main_~y~0) (<= 100 main_~x~0)) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< 99 main_~y~0) (<= main_~x~0 99)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [118] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_373 v_main_~x~0_372))) (or .cse0 (and .cse0 (not (< v_main_~x~0_373 50))) (and (< v_main_~x~0_373 v_main_~x~0_372) (< v_main_~x~0_372 51)))) InVars {main_~x~0=v_main_~x~0_373} OutVars{main_~x~0=v_main_~x~0_372} AuxVars[] AssignedVars[main_~x~0] {5189#(and (or (<= main_~x~0 main_~y~0) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (<= main_~x~0 99) (<= main_~y~0 100)) (or (< 99 main_~y~0) (<= main_~x~0 99)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:14:25,316 INFO L290 TraceCheckUtils]: 5: Hoare triple {5115#true} ~x~0 := 0;~y~0 := 50; {5196#(and (<= 50 main_~y~0) (or (<= main_~x~0 main_~y~0) (<= 100 main_~x~0)) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< 99 main_~y~0) (<= main_~x~0 99)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:14:25,316 INFO L272 TraceCheckUtils]: 4: Hoare triple {5115#true} call #t~ret1 := main(); {5115#true} is VALID [2022-04-15 06:14:25,316 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {5115#true} {5115#true} #56#return; {5115#true} is VALID [2022-04-15 06:14:25,317 INFO L290 TraceCheckUtils]: 2: Hoare triple {5115#true} assume true; {5115#true} is VALID [2022-04-15 06:14:25,317 INFO L290 TraceCheckUtils]: 1: Hoare triple {5115#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {5115#true} is VALID [2022-04-15 06:14:25,317 INFO L272 TraceCheckUtils]: 0: Hoare triple {5115#true} call ULTIMATE.init(); {5115#true} is VALID [2022-04-15 06:14:25,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:14:25,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050191913] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:14:25,317 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:14:25,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2022-04-15 06:14:26,045 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:14:26,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [738905422] [2022-04-15 06:14:26,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [738905422] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:14:26,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:14:26,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-04-15 06:14:26,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943916257] [2022-04-15 06:14:26,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:14:26,046 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2022-04-15 06:14:26,046 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:14:26,046 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 23 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:26,086 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 43 edges. 43 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:14:26,086 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-04-15 06:14:26,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:14:26,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-04-15 06:14:26,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=890, Unknown=0, NotChecked=0, Total=1056 [2022-04-15 06:14:26,087 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand has 23 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:28,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:14:28,155 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2022-04-15 06:14:28,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-15 06:14:28,155 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2022-04-15 06:14:28,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:14:28,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:28,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 59 transitions. [2022-04-15 06:14:28,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:28,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 59 transitions. [2022-04-15 06:14:28,157 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 20 states and 59 transitions. [2022-04-15 06:14:28,216 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 59 edges. 59 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:14:28,217 INFO L225 Difference]: With dead ends: 54 [2022-04-15 06:14:28,217 INFO L226 Difference]: Without dead ends: 47 [2022-04-15 06:14:28,218 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 35 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=308, Invalid=2142, Unknown=0, NotChecked=0, Total=2450 [2022-04-15 06:14:28,218 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 25 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-15 06:14:28,218 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 108 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-15 06:14:28,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-04-15 06:14:28,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-04-15 06:14:28,301 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:14:28,301 INFO L82 GeneralOperation]: Start isEquivalent. First operand 47 states. Second operand has 47 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:28,302 INFO L74 IsIncluded]: Start isIncluded. First operand 47 states. Second operand has 47 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:28,302 INFO L87 Difference]: Start difference. First operand 47 states. Second operand has 47 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:28,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:14:28,303 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2022-04-15 06:14:28,303 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2022-04-15 06:14:28,303 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:14:28,303 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:14:28,303 INFO L74 IsIncluded]: Start isIncluded. First operand has 47 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 47 states. [2022-04-15 06:14:28,303 INFO L87 Difference]: Start difference. First operand has 47 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 47 states. [2022-04-15 06:14:28,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:14:28,304 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2022-04-15 06:14:28,304 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2022-04-15 06:14:28,304 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:14:28,305 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:14:28,305 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:14:28,305 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:14:28,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:28,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2022-04-15 06:14:28,306 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 43 [2022-04-15 06:14:28,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:14:28,306 INFO L478 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2022-04-15 06:14:28,306 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:28,306 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 47 states and 49 transitions. [2022-04-15 06:14:28,357 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 49 edges. 49 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:14:28,358 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2022-04-15 06:14:28,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-04-15 06:14:28,358 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:14:28,358 INFO L499 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:14:28,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-04-15 06:14:28,558 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-04-15 06:14:28,559 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:14:28,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:14:28,559 INFO L85 PathProgramCache]: Analyzing trace with hash -925909917, now seen corresponding path program 16 times [2022-04-15 06:14:28,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:14:28,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [842242888] [2022-04-15 06:14:28,688 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:14:28,958 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:14:28,959 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:14:28,962 INFO L85 PathProgramCache]: Analyzing trace with hash -360930868, now seen corresponding path program 1 times [2022-04-15 06:14:28,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:14:28,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222229526] [2022-04-15 06:14:28,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:14:28,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:14:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:14:29,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:14:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:14:29,105 INFO L290 TraceCheckUtils]: 0: Hoare triple {5575#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {5564#true} is VALID [2022-04-15 06:14:29,105 INFO L290 TraceCheckUtils]: 1: Hoare triple {5564#true} assume true; {5564#true} is VALID [2022-04-15 06:14:29,105 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {5564#true} {5564#true} #56#return; {5564#true} is VALID [2022-04-15 06:14:29,105 INFO L272 TraceCheckUtils]: 0: Hoare triple {5564#true} call ULTIMATE.init(); {5575#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:14:29,106 INFO L290 TraceCheckUtils]: 1: Hoare triple {5575#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {5564#true} is VALID [2022-04-15 06:14:29,106 INFO L290 TraceCheckUtils]: 2: Hoare triple {5564#true} assume true; {5564#true} is VALID [2022-04-15 06:14:29,106 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {5564#true} {5564#true} #56#return; {5564#true} is VALID [2022-04-15 06:14:29,106 INFO L272 TraceCheckUtils]: 4: Hoare triple {5564#true} call #t~ret1 := main(); {5564#true} is VALID [2022-04-15 06:14:29,106 INFO L290 TraceCheckUtils]: 5: Hoare triple {5564#true} ~x~0 := 0;~y~0 := 50; {5569#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:14:29,107 INFO L290 TraceCheckUtils]: 6: Hoare triple {5569#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [122] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_406 v_main_~x~0_405))) (or (and (<= 50 v_main_~x~0_406) .cse0) (and (< v_main_~x~0_406 v_main_~x~0_405) (< v_main_~x~0_405 51)) .cse0)) InVars {main_~x~0=v_main_~x~0_406} OutVars{main_~x~0=v_main_~x~0_405} AuxVars[] AssignedVars[main_~x~0] {5570#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:14:29,108 INFO L290 TraceCheckUtils]: 7: Hoare triple {5570#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [123] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {5570#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:14:29,109 INFO L290 TraceCheckUtils]: 8: Hoare triple {5570#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [124] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_262 v_main_~y~0_261)) (.cse1 (= v_main_~x~0_408 v_main_~x~0_407)) (.cse2 (<= 50 v_main_~x~0_408))) (or (and .cse0 .cse1) (and .cse0 .cse1 (or (not (< v_main_~x~0_408 100)) (not .cse2))) (let ((.cse3 (+ v_main_~x~0_408 v_main_~y~0_261))) (and (< .cse3 (+ 101 v_main_~y~0_262)) .cse2 (= .cse3 (+ v_main_~x~0_407 v_main_~y~0_262)) (< v_main_~y~0_262 v_main_~y~0_261))))) InVars {main_~x~0=v_main_~x~0_408, main_~y~0=v_main_~y~0_262} OutVars{main_~x~0=v_main_~x~0_407, main_~y~0=v_main_~y~0_261} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {5571#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:14:29,109 INFO L290 TraceCheckUtils]: 9: Hoare triple {5571#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [121] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {5572#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:14:29,110 INFO L272 TraceCheckUtils]: 10: Hoare triple {5572#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {5573#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:14:29,110 INFO L290 TraceCheckUtils]: 11: Hoare triple {5573#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {5574#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:14:29,110 INFO L290 TraceCheckUtils]: 12: Hoare triple {5574#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {5565#false} is VALID [2022-04-15 06:14:29,111 INFO L290 TraceCheckUtils]: 13: Hoare triple {5565#false} assume !false; {5565#false} is VALID [2022-04-15 06:14:29,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:14:29,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:14:29,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222229526] [2022-04-15 06:14:29,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222229526] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:14:29,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372947343] [2022-04-15 06:14:29,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:14:29,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:14:29,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:14:29,136 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:14:29,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-04-15 06:14:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:14:29,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:14:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:14:29,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:14:29,523 INFO L272 TraceCheckUtils]: 0: Hoare triple {5564#true} call ULTIMATE.init(); {5564#true} is VALID [2022-04-15 06:14:29,523 INFO L290 TraceCheckUtils]: 1: Hoare triple {5564#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {5564#true} is VALID [2022-04-15 06:14:29,523 INFO L290 TraceCheckUtils]: 2: Hoare triple {5564#true} assume true; {5564#true} is VALID [2022-04-15 06:14:29,523 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {5564#true} {5564#true} #56#return; {5564#true} is VALID [2022-04-15 06:14:29,523 INFO L272 TraceCheckUtils]: 4: Hoare triple {5564#true} call #t~ret1 := main(); {5564#true} is VALID [2022-04-15 06:14:29,524 INFO L290 TraceCheckUtils]: 5: Hoare triple {5564#true} ~x~0 := 0;~y~0 := 50; {5594#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:14:29,525 INFO L290 TraceCheckUtils]: 6: Hoare triple {5594#(and (<= main_~x~0 0) (= main_~y~0 50))} [122] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_406 v_main_~x~0_405))) (or (and (<= 50 v_main_~x~0_406) .cse0) (and (< v_main_~x~0_406 v_main_~x~0_405) (< v_main_~x~0_405 51)) .cse0)) InVars {main_~x~0=v_main_~x~0_406} OutVars{main_~x~0=v_main_~x~0_405} AuxVars[] AssignedVars[main_~x~0] {5598#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:14:29,525 INFO L290 TraceCheckUtils]: 7: Hoare triple {5598#(and (= main_~y~0 50) (< main_~x~0 51))} [123] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {5598#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:14:29,526 INFO L290 TraceCheckUtils]: 8: Hoare triple {5598#(and (= main_~y~0 50) (< main_~x~0 51))} [124] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_262 v_main_~y~0_261)) (.cse1 (= v_main_~x~0_408 v_main_~x~0_407)) (.cse2 (<= 50 v_main_~x~0_408))) (or (and .cse0 .cse1) (and .cse0 .cse1 (or (not (< v_main_~x~0_408 100)) (not .cse2))) (let ((.cse3 (+ v_main_~x~0_408 v_main_~y~0_261))) (and (< .cse3 (+ 101 v_main_~y~0_262)) .cse2 (= .cse3 (+ v_main_~x~0_407 v_main_~y~0_262)) (< v_main_~y~0_262 v_main_~y~0_261))))) InVars {main_~x~0=v_main_~x~0_408, main_~y~0=v_main_~y~0_262} OutVars{main_~x~0=v_main_~x~0_407, main_~y~0=v_main_~y~0_261} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {5605#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:14:29,527 INFO L290 TraceCheckUtils]: 9: Hoare triple {5605#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [121] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {5572#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:14:29,527 INFO L272 TraceCheckUtils]: 10: Hoare triple {5572#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {5612#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:14:29,528 INFO L290 TraceCheckUtils]: 11: Hoare triple {5612#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {5616#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:14:29,528 INFO L290 TraceCheckUtils]: 12: Hoare triple {5616#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {5565#false} is VALID [2022-04-15 06:14:29,528 INFO L290 TraceCheckUtils]: 13: Hoare triple {5565#false} assume !false; {5565#false} is VALID [2022-04-15 06:14:29,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:14:29,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:14:30,066 INFO L290 TraceCheckUtils]: 13: Hoare triple {5565#false} assume !false; {5565#false} is VALID [2022-04-15 06:14:30,067 INFO L290 TraceCheckUtils]: 12: Hoare triple {5616#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {5565#false} is VALID [2022-04-15 06:14:30,068 INFO L290 TraceCheckUtils]: 11: Hoare triple {5612#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {5616#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:14:30,068 INFO L272 TraceCheckUtils]: 10: Hoare triple {5572#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {5612#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:14:30,069 INFO L290 TraceCheckUtils]: 9: Hoare triple {5635#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [121] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {5572#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:14:30,070 INFO L290 TraceCheckUtils]: 8: Hoare triple {5639#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [124] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_262 v_main_~y~0_261)) (.cse1 (= v_main_~x~0_408 v_main_~x~0_407)) (.cse2 (<= 50 v_main_~x~0_408))) (or (and .cse0 .cse1) (and .cse0 .cse1 (or (not (< v_main_~x~0_408 100)) (not .cse2))) (let ((.cse3 (+ v_main_~x~0_408 v_main_~y~0_261))) (and (< .cse3 (+ 101 v_main_~y~0_262)) .cse2 (= .cse3 (+ v_main_~x~0_407 v_main_~y~0_262)) (< v_main_~y~0_262 v_main_~y~0_261))))) InVars {main_~x~0=v_main_~x~0_408, main_~y~0=v_main_~y~0_262} OutVars{main_~x~0=v_main_~x~0_407, main_~y~0=v_main_~y~0_261} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {5635#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:14:30,071 INFO L290 TraceCheckUtils]: 7: Hoare triple {5639#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [123] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {5639#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:14:30,072 INFO L290 TraceCheckUtils]: 6: Hoare triple {5646#(and (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)) (or (and (< main_~x~0 (+ main_~y~0 1)) (<= 50 main_~y~0)) (<= 99 main_~y~0)))} [122] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_406 v_main_~x~0_405))) (or (and (<= 50 v_main_~x~0_406) .cse0) (and (< v_main_~x~0_406 v_main_~x~0_405) (< v_main_~x~0_405 51)) .cse0)) InVars {main_~x~0=v_main_~x~0_406} OutVars{main_~x~0=v_main_~x~0_405} AuxVars[] AssignedVars[main_~x~0] {5639#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:14:30,072 INFO L290 TraceCheckUtils]: 5: Hoare triple {5564#true} ~x~0 := 0;~y~0 := 50; {5646#(and (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)) (or (and (< main_~x~0 (+ main_~y~0 1)) (<= 50 main_~y~0)) (<= 99 main_~y~0)))} is VALID [2022-04-15 06:14:30,072 INFO L272 TraceCheckUtils]: 4: Hoare triple {5564#true} call #t~ret1 := main(); {5564#true} is VALID [2022-04-15 06:14:30,072 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {5564#true} {5564#true} #56#return; {5564#true} is VALID [2022-04-15 06:14:30,073 INFO L290 TraceCheckUtils]: 2: Hoare triple {5564#true} assume true; {5564#true} is VALID [2022-04-15 06:14:30,073 INFO L290 TraceCheckUtils]: 1: Hoare triple {5564#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {5564#true} is VALID [2022-04-15 06:14:30,073 INFO L272 TraceCheckUtils]: 0: Hoare triple {5564#true} call ULTIMATE.init(); {5564#true} is VALID [2022-04-15 06:14:30,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:14:30,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372947343] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:14:30,073 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:14:30,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:14:30,850 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:14:30,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [842242888] [2022-04-15 06:14:30,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [842242888] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:14:30,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:14:30,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-04-15 06:14:30,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409884685] [2022-04-15 06:14:30,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:14:30,851 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 22 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2022-04-15 06:14:30,851 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:14:30,851 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 22 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:30,893 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 45 edges. 45 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:14:30,894 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-04-15 06:14:30,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:14:30,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-04-15 06:14:30,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=989, Unknown=0, NotChecked=0, Total=1190 [2022-04-15 06:14:30,895 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 22 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:33,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:14:33,514 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2022-04-15 06:14:33,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-04-15 06:14:33,514 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 22 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2022-04-15 06:14:33,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:14:33,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 22 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:33,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 61 transitions. [2022-04-15 06:14:33,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 22 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:33,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 61 transitions. [2022-04-15 06:14:33,516 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 21 states and 61 transitions. [2022-04-15 06:14:33,579 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 61 edges. 61 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:14:33,580 INFO L225 Difference]: With dead ends: 56 [2022-04-15 06:14:33,580 INFO L226 Difference]: Without dead ends: 49 [2022-04-15 06:14:33,581 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=369, Invalid=2387, Unknown=0, NotChecked=0, Total=2756 [2022-04-15 06:14:33,581 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 26 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-15 06:14:33,582 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 118 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-15 06:14:33,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-04-15 06:14:33,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-04-15 06:14:33,664 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:14:33,665 INFO L82 GeneralOperation]: Start isEquivalent. First operand 49 states. Second operand has 49 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 44 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:33,665 INFO L74 IsIncluded]: Start isIncluded. First operand 49 states. Second operand has 49 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 44 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:33,665 INFO L87 Difference]: Start difference. First operand 49 states. Second operand has 49 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 44 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:33,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:14:33,666 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2022-04-15 06:14:33,666 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2022-04-15 06:14:33,666 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:14:33,666 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:14:33,666 INFO L74 IsIncluded]: Start isIncluded. First operand has 49 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 44 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 49 states. [2022-04-15 06:14:33,667 INFO L87 Difference]: Start difference. First operand has 49 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 44 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 49 states. [2022-04-15 06:14:33,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:14:33,667 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2022-04-15 06:14:33,667 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2022-04-15 06:14:33,668 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:14:33,668 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:14:33,668 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:14:33,668 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:14:33,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 44 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:33,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2022-04-15 06:14:33,669 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 45 [2022-04-15 06:14:33,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:14:33,669 INFO L478 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2022-04-15 06:14:33,669 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 22 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:33,669 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 49 states and 51 transitions. [2022-04-15 06:14:33,719 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 51 edges. 51 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:14:33,719 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2022-04-15 06:14:33,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-15 06:14:33,719 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:14:33,719 INFO L499 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:14:33,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-04-15 06:14:33,920 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:14:33,920 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:14:33,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:14:33,921 INFO L85 PathProgramCache]: Analyzing trace with hash 328472318, now seen corresponding path program 17 times [2022-04-15 06:14:33,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:14:33,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1738359248] [2022-04-15 06:14:38,006 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-15 06:14:38,066 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:14:40,342 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:14:40,343 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:14:40,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1688601292, now seen corresponding path program 1 times [2022-04-15 06:14:40,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:14:40,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736469287] [2022-04-15 06:14:40,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:14:40,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:14:40,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:14:40,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:14:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:14:40,493 INFO L290 TraceCheckUtils]: 0: Hoare triple {6040#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {6029#true} is VALID [2022-04-15 06:14:40,493 INFO L290 TraceCheckUtils]: 1: Hoare triple {6029#true} assume true; {6029#true} is VALID [2022-04-15 06:14:40,493 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {6029#true} {6029#true} #56#return; {6029#true} is VALID [2022-04-15 06:14:40,494 INFO L272 TraceCheckUtils]: 0: Hoare triple {6029#true} call ULTIMATE.init(); {6040#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:14:40,494 INFO L290 TraceCheckUtils]: 1: Hoare triple {6040#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {6029#true} is VALID [2022-04-15 06:14:40,494 INFO L290 TraceCheckUtils]: 2: Hoare triple {6029#true} assume true; {6029#true} is VALID [2022-04-15 06:14:40,494 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {6029#true} {6029#true} #56#return; {6029#true} is VALID [2022-04-15 06:14:40,494 INFO L272 TraceCheckUtils]: 4: Hoare triple {6029#true} call #t~ret1 := main(); {6029#true} is VALID [2022-04-15 06:14:40,495 INFO L290 TraceCheckUtils]: 5: Hoare triple {6029#true} ~x~0 := 0;~y~0 := 50; {6034#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:14:40,499 INFO L290 TraceCheckUtils]: 6: Hoare triple {6034#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [126] L28-2-->L27-2_primed: Formula: (or (and (not (< v_main_~x~0_440 50)) (= v_main_~x~0_439 v_main_~x~0_440)) (and (< v_main_~x~0_439 51) (< v_main_~x~0_440 v_main_~x~0_439)) (= v_main_~x~0_440 v_main_~x~0_439)) InVars {main_~x~0=v_main_~x~0_440} OutVars{main_~x~0=v_main_~x~0_439} AuxVars[] AssignedVars[main_~x~0] {6035#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:14:40,499 INFO L290 TraceCheckUtils]: 7: Hoare triple {6035#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [127] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {6035#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:14:40,501 INFO L290 TraceCheckUtils]: 8: Hoare triple {6035#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [128] L28-2-->L27-2_primed: Formula: (let ((.cse1 (= v_main_~y~0_287 v_main_~y~0_286)) (.cse2 (= v_main_~x~0_442 v_main_~x~0_441)) (.cse0 (<= 50 v_main_~x~0_442))) (or (and (= (+ v_main_~x~0_441 v_main_~y~0_287) (+ v_main_~x~0_442 v_main_~y~0_286)) (< v_main_~x~0_442 v_main_~x~0_441) (< v_main_~x~0_441 101) .cse0) (and .cse1 .cse2) (and .cse1 .cse2 (or (not .cse0) (not (< v_main_~x~0_442 100)))))) InVars {main_~x~0=v_main_~x~0_442, main_~y~0=v_main_~y~0_287} OutVars{main_~x~0=v_main_~x~0_441, main_~y~0=v_main_~y~0_286} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {6036#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:14:40,501 INFO L290 TraceCheckUtils]: 9: Hoare triple {6036#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [125] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {6037#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:14:40,502 INFO L272 TraceCheckUtils]: 10: Hoare triple {6037#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {6038#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:14:40,502 INFO L290 TraceCheckUtils]: 11: Hoare triple {6038#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {6039#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:14:40,503 INFO L290 TraceCheckUtils]: 12: Hoare triple {6039#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {6030#false} is VALID [2022-04-15 06:14:40,503 INFO L290 TraceCheckUtils]: 13: Hoare triple {6030#false} assume !false; {6030#false} is VALID [2022-04-15 06:14:40,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:14:40,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:14:40,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736469287] [2022-04-15 06:14:40,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736469287] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:14:40,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330429624] [2022-04-15 06:14:40,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:14:40,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:14:40,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:14:40,513 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:14:40,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-04-15 06:14:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:14:40,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:14:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:14:40,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:14:41,028 INFO L272 TraceCheckUtils]: 0: Hoare triple {6029#true} call ULTIMATE.init(); {6029#true} is VALID [2022-04-15 06:14:41,029 INFO L290 TraceCheckUtils]: 1: Hoare triple {6029#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {6029#true} is VALID [2022-04-15 06:14:41,029 INFO L290 TraceCheckUtils]: 2: Hoare triple {6029#true} assume true; {6029#true} is VALID [2022-04-15 06:14:41,029 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {6029#true} {6029#true} #56#return; {6029#true} is VALID [2022-04-15 06:14:41,029 INFO L272 TraceCheckUtils]: 4: Hoare triple {6029#true} call #t~ret1 := main(); {6029#true} is VALID [2022-04-15 06:14:41,030 INFO L290 TraceCheckUtils]: 5: Hoare triple {6029#true} ~x~0 := 0;~y~0 := 50; {6059#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:14:41,030 INFO L290 TraceCheckUtils]: 6: Hoare triple {6059#(and (<= main_~x~0 0) (= main_~y~0 50))} [126] L28-2-->L27-2_primed: Formula: (or (and (not (< v_main_~x~0_440 50)) (= v_main_~x~0_439 v_main_~x~0_440)) (and (< v_main_~x~0_439 51) (< v_main_~x~0_440 v_main_~x~0_439)) (= v_main_~x~0_440 v_main_~x~0_439)) InVars {main_~x~0=v_main_~x~0_440} OutVars{main_~x~0=v_main_~x~0_439} AuxVars[] AssignedVars[main_~x~0] {6063#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:14:41,031 INFO L290 TraceCheckUtils]: 7: Hoare triple {6063#(and (= main_~y~0 50) (< main_~x~0 51))} [127] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {6063#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:14:41,032 INFO L290 TraceCheckUtils]: 8: Hoare triple {6063#(and (= main_~y~0 50) (< main_~x~0 51))} [128] L28-2-->L27-2_primed: Formula: (let ((.cse1 (= v_main_~y~0_287 v_main_~y~0_286)) (.cse2 (= v_main_~x~0_442 v_main_~x~0_441)) (.cse0 (<= 50 v_main_~x~0_442))) (or (and (= (+ v_main_~x~0_441 v_main_~y~0_287) (+ v_main_~x~0_442 v_main_~y~0_286)) (< v_main_~x~0_442 v_main_~x~0_441) (< v_main_~x~0_441 101) .cse0) (and .cse1 .cse2) (and .cse1 .cse2 (or (not .cse0) (not (< v_main_~x~0_442 100)))))) InVars {main_~x~0=v_main_~x~0_442, main_~y~0=v_main_~y~0_287} OutVars{main_~x~0=v_main_~x~0_441, main_~y~0=v_main_~y~0_286} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {6070#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:14:41,032 INFO L290 TraceCheckUtils]: 9: Hoare triple {6070#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [125] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {6037#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:14:41,033 INFO L272 TraceCheckUtils]: 10: Hoare triple {6037#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {6077#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:14:41,034 INFO L290 TraceCheckUtils]: 11: Hoare triple {6077#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {6081#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:14:41,034 INFO L290 TraceCheckUtils]: 12: Hoare triple {6081#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {6030#false} is VALID [2022-04-15 06:14:41,034 INFO L290 TraceCheckUtils]: 13: Hoare triple {6030#false} assume !false; {6030#false} is VALID [2022-04-15 06:14:41,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:14:41,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:14:41,740 INFO L290 TraceCheckUtils]: 13: Hoare triple {6030#false} assume !false; {6030#false} is VALID [2022-04-15 06:14:41,740 INFO L290 TraceCheckUtils]: 12: Hoare triple {6081#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {6030#false} is VALID [2022-04-15 06:14:41,741 INFO L290 TraceCheckUtils]: 11: Hoare triple {6077#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {6081#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:14:41,742 INFO L272 TraceCheckUtils]: 10: Hoare triple {6037#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {6077#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:14:41,742 INFO L290 TraceCheckUtils]: 9: Hoare triple {6100#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [125] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {6037#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:14:41,743 INFO L290 TraceCheckUtils]: 8: Hoare triple {6104#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [128] L28-2-->L27-2_primed: Formula: (let ((.cse1 (= v_main_~y~0_287 v_main_~y~0_286)) (.cse2 (= v_main_~x~0_442 v_main_~x~0_441)) (.cse0 (<= 50 v_main_~x~0_442))) (or (and (= (+ v_main_~x~0_441 v_main_~y~0_287) (+ v_main_~x~0_442 v_main_~y~0_286)) (< v_main_~x~0_442 v_main_~x~0_441) (< v_main_~x~0_441 101) .cse0) (and .cse1 .cse2) (and .cse1 .cse2 (or (not .cse0) (not (< v_main_~x~0_442 100)))))) InVars {main_~x~0=v_main_~x~0_442, main_~y~0=v_main_~y~0_287} OutVars{main_~x~0=v_main_~x~0_441, main_~y~0=v_main_~y~0_286} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {6100#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:14:41,744 INFO L290 TraceCheckUtils]: 7: Hoare triple {6104#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [127] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {6104#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:14:41,745 INFO L290 TraceCheckUtils]: 6: Hoare triple {6111#(and (<= 50 main_~y~0) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [126] L28-2-->L27-2_primed: Formula: (or (and (not (< v_main_~x~0_440 50)) (= v_main_~x~0_439 v_main_~x~0_440)) (and (< v_main_~x~0_439 51) (< v_main_~x~0_440 v_main_~x~0_439)) (= v_main_~x~0_440 v_main_~x~0_439)) InVars {main_~x~0=v_main_~x~0_440} OutVars{main_~x~0=v_main_~x~0_439} AuxVars[] AssignedVars[main_~x~0] {6104#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:14:41,746 INFO L290 TraceCheckUtils]: 5: Hoare triple {6029#true} ~x~0 := 0;~y~0 := 50; {6111#(and (<= 50 main_~y~0) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:14:41,746 INFO L272 TraceCheckUtils]: 4: Hoare triple {6029#true} call #t~ret1 := main(); {6029#true} is VALID [2022-04-15 06:14:41,746 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {6029#true} {6029#true} #56#return; {6029#true} is VALID [2022-04-15 06:14:41,746 INFO L290 TraceCheckUtils]: 2: Hoare triple {6029#true} assume true; {6029#true} is VALID [2022-04-15 06:14:41,746 INFO L290 TraceCheckUtils]: 1: Hoare triple {6029#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {6029#true} is VALID [2022-04-15 06:14:41,746 INFO L272 TraceCheckUtils]: 0: Hoare triple {6029#true} call ULTIMATE.init(); {6029#true} is VALID [2022-04-15 06:14:41,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:14:41,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330429624] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:14:41,747 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:14:41,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:14:42,582 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:14:42,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1738359248] [2022-04-15 06:14:42,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1738359248] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:14:42,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:14:42,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-04-15 06:14:42,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158368078] [2022-04-15 06:14:42,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:14:42,583 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 23 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2022-04-15 06:14:42,583 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:14:42,584 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 25 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 23 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:42,638 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 47 edges. 47 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:14:42,638 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-04-15 06:14:42,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:14:42,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-04-15 06:14:42,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1052, Unknown=0, NotChecked=0, Total=1260 [2022-04-15 06:14:42,639 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand has 25 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 23 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:44,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:14:44,920 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2022-04-15 06:14:44,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-04-15 06:14:44,920 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 23 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2022-04-15 06:14:44,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:14:44,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 23 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:44,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 63 transitions. [2022-04-15 06:14:44,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 23 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:44,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 63 transitions. [2022-04-15 06:14:44,923 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 22 states and 63 transitions. [2022-04-15 06:14:45,013 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 63 edges. 63 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:14:45,014 INFO L225 Difference]: With dead ends: 58 [2022-04-15 06:14:45,014 INFO L226 Difference]: Without dead ends: 51 [2022-04-15 06:14:45,015 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=385, Invalid=2585, Unknown=0, NotChecked=0, Total=2970 [2022-04-15 06:14:45,016 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 27 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-15 06:14:45,016 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 123 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-15 06:14:45,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-04-15 06:14:45,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-04-15 06:14:45,202 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:14:45,202 INFO L82 GeneralOperation]: Start isEquivalent. First operand 51 states. Second operand has 51 states, 46 states have (on average 1.065217391304348) internal successors, (49), 46 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:45,203 INFO L74 IsIncluded]: Start isIncluded. First operand 51 states. Second operand has 51 states, 46 states have (on average 1.065217391304348) internal successors, (49), 46 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:45,203 INFO L87 Difference]: Start difference. First operand 51 states. Second operand has 51 states, 46 states have (on average 1.065217391304348) internal successors, (49), 46 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:45,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:14:45,204 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2022-04-15 06:14:45,204 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2022-04-15 06:14:45,204 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:14:45,204 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:14:45,204 INFO L74 IsIncluded]: Start isIncluded. First operand has 51 states, 46 states have (on average 1.065217391304348) internal successors, (49), 46 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 51 states. [2022-04-15 06:14:45,204 INFO L87 Difference]: Start difference. First operand has 51 states, 46 states have (on average 1.065217391304348) internal successors, (49), 46 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 51 states. [2022-04-15 06:14:45,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:14:45,205 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2022-04-15 06:14:45,205 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2022-04-15 06:14:45,205 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:14:45,205 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:14:45,205 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:14:45,205 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:14:45,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.065217391304348) internal successors, (49), 46 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:45,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2022-04-15 06:14:45,206 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 47 [2022-04-15 06:14:45,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:14:45,207 INFO L478 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2022-04-15 06:14:45,207 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 23 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:45,207 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 51 states and 53 transitions. [2022-04-15 06:14:45,258 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 53 edges. 53 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:14:45,258 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2022-04-15 06:14:45,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-04-15 06:14:45,258 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:14:45,258 INFO L499 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:14:45,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-04-15 06:14:45,459 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:14:45,459 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:14:45,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:14:45,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1096010023, now seen corresponding path program 18 times [2022-04-15 06:14:45,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:14:45,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [29833450] [2022-04-15 06:14:49,526 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-15 06:14:49,579 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:14:49,823 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:14:49,826 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:14:49,829 INFO L85 PathProgramCache]: Analyzing trace with hash -556833844, now seen corresponding path program 1 times [2022-04-15 06:14:49,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:14:49,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146883597] [2022-04-15 06:14:49,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:14:49,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:14:49,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:14:49,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:14:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:14:49,975 INFO L290 TraceCheckUtils]: 0: Hoare triple {6520#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {6509#true} is VALID [2022-04-15 06:14:49,975 INFO L290 TraceCheckUtils]: 1: Hoare triple {6509#true} assume true; {6509#true} is VALID [2022-04-15 06:14:49,975 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {6509#true} {6509#true} #56#return; {6509#true} is VALID [2022-04-15 06:14:49,991 INFO L272 TraceCheckUtils]: 0: Hoare triple {6509#true} call ULTIMATE.init(); {6520#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:14:49,991 INFO L290 TraceCheckUtils]: 1: Hoare triple {6520#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {6509#true} is VALID [2022-04-15 06:14:49,992 INFO L290 TraceCheckUtils]: 2: Hoare triple {6509#true} assume true; {6509#true} is VALID [2022-04-15 06:14:49,992 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {6509#true} {6509#true} #56#return; {6509#true} is VALID [2022-04-15 06:14:49,992 INFO L272 TraceCheckUtils]: 4: Hoare triple {6509#true} call #t~ret1 := main(); {6509#true} is VALID [2022-04-15 06:14:49,999 INFO L290 TraceCheckUtils]: 5: Hoare triple {6509#true} ~x~0 := 0;~y~0 := 50; {6514#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:14:50,007 INFO L290 TraceCheckUtils]: 6: Hoare triple {6514#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [130] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_475 v_main_~x~0_474))) (or (and (<= 50 v_main_~x~0_475) .cse0) (and (< v_main_~x~0_474 51) (< v_main_~x~0_475 v_main_~x~0_474)) .cse0)) InVars {main_~x~0=v_main_~x~0_475} OutVars{main_~x~0=v_main_~x~0_474} AuxVars[] AssignedVars[main_~x~0] {6515#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:14:50,013 INFO L290 TraceCheckUtils]: 7: Hoare triple {6515#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [131] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {6515#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:14:50,023 INFO L290 TraceCheckUtils]: 8: Hoare triple {6515#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [132] L28-2-->L27-2_primed: Formula: (let ((.cse3 (<= 50 v_main_~x~0_477)) (.cse0 (= v_main_~y~0_313 v_main_~y~0_312)) (.cse1 (= v_main_~x~0_477 v_main_~x~0_476))) (or (and .cse0 .cse1) (let ((.cse2 (+ v_main_~x~0_477 v_main_~y~0_312))) (and (< .cse2 (+ 101 v_main_~y~0_313)) (= .cse2 (+ v_main_~x~0_476 v_main_~y~0_313)) .cse3 (< v_main_~y~0_313 v_main_~y~0_312))) (and (or (not (< v_main_~x~0_477 100)) (not .cse3)) .cse0 .cse1))) InVars {main_~x~0=v_main_~x~0_477, main_~y~0=v_main_~y~0_313} OutVars{main_~x~0=v_main_~x~0_476, main_~y~0=v_main_~y~0_312} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {6516#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:14:50,031 INFO L290 TraceCheckUtils]: 9: Hoare triple {6516#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [129] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {6517#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:14:50,039 INFO L272 TraceCheckUtils]: 10: Hoare triple {6517#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {6518#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:14:50,047 INFO L290 TraceCheckUtils]: 11: Hoare triple {6518#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {6519#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:14:50,054 INFO L290 TraceCheckUtils]: 12: Hoare triple {6519#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {6510#false} is VALID [2022-04-15 06:14:50,054 INFO L290 TraceCheckUtils]: 13: Hoare triple {6510#false} assume !false; {6510#false} is VALID [2022-04-15 06:14:50,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:14:50,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:14:50,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146883597] [2022-04-15 06:14:50,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146883597] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:14:50,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92059494] [2022-04-15 06:14:50,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:14:50,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:14:50,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:14:50,056 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:14:50,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-04-15 06:14:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:14:50,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:14:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:14:50,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:14:50,755 INFO L272 TraceCheckUtils]: 0: Hoare triple {6509#true} call ULTIMATE.init(); {6509#true} is VALID [2022-04-15 06:14:50,756 INFO L290 TraceCheckUtils]: 1: Hoare triple {6509#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {6509#true} is VALID [2022-04-15 06:14:50,756 INFO L290 TraceCheckUtils]: 2: Hoare triple {6509#true} assume true; {6509#true} is VALID [2022-04-15 06:14:50,756 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {6509#true} {6509#true} #56#return; {6509#true} is VALID [2022-04-15 06:14:50,756 INFO L272 TraceCheckUtils]: 4: Hoare triple {6509#true} call #t~ret1 := main(); {6509#true} is VALID [2022-04-15 06:14:50,756 INFO L290 TraceCheckUtils]: 5: Hoare triple {6509#true} ~x~0 := 0;~y~0 := 50; {6539#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:14:50,757 INFO L290 TraceCheckUtils]: 6: Hoare triple {6539#(and (<= main_~x~0 0) (= main_~y~0 50))} [130] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_475 v_main_~x~0_474))) (or (and (<= 50 v_main_~x~0_475) .cse0) (and (< v_main_~x~0_474 51) (< v_main_~x~0_475 v_main_~x~0_474)) .cse0)) InVars {main_~x~0=v_main_~x~0_475} OutVars{main_~x~0=v_main_~x~0_474} AuxVars[] AssignedVars[main_~x~0] {6543#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:14:50,758 INFO L290 TraceCheckUtils]: 7: Hoare triple {6543#(and (= main_~y~0 50) (< main_~x~0 51))} [131] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {6543#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:14:50,759 INFO L290 TraceCheckUtils]: 8: Hoare triple {6543#(and (= main_~y~0 50) (< main_~x~0 51))} [132] L28-2-->L27-2_primed: Formula: (let ((.cse3 (<= 50 v_main_~x~0_477)) (.cse0 (= v_main_~y~0_313 v_main_~y~0_312)) (.cse1 (= v_main_~x~0_477 v_main_~x~0_476))) (or (and .cse0 .cse1) (let ((.cse2 (+ v_main_~x~0_477 v_main_~y~0_312))) (and (< .cse2 (+ 101 v_main_~y~0_313)) (= .cse2 (+ v_main_~x~0_476 v_main_~y~0_313)) .cse3 (< v_main_~y~0_313 v_main_~y~0_312))) (and (or (not (< v_main_~x~0_477 100)) (not .cse3)) .cse0 .cse1))) InVars {main_~x~0=v_main_~x~0_477, main_~y~0=v_main_~y~0_313} OutVars{main_~x~0=v_main_~x~0_476, main_~y~0=v_main_~y~0_312} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {6550#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:14:50,760 INFO L290 TraceCheckUtils]: 9: Hoare triple {6550#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [129] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {6517#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:14:50,761 INFO L272 TraceCheckUtils]: 10: Hoare triple {6517#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {6557#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:14:50,762 INFO L290 TraceCheckUtils]: 11: Hoare triple {6557#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {6561#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:14:50,762 INFO L290 TraceCheckUtils]: 12: Hoare triple {6561#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {6510#false} is VALID [2022-04-15 06:14:50,762 INFO L290 TraceCheckUtils]: 13: Hoare triple {6510#false} assume !false; {6510#false} is VALID [2022-04-15 06:14:50,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:14:50,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:14:51,699 INFO L290 TraceCheckUtils]: 13: Hoare triple {6510#false} assume !false; {6510#false} is VALID [2022-04-15 06:14:51,700 INFO L290 TraceCheckUtils]: 12: Hoare triple {6561#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {6510#false} is VALID [2022-04-15 06:14:51,700 INFO L290 TraceCheckUtils]: 11: Hoare triple {6557#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {6561#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:14:51,701 INFO L272 TraceCheckUtils]: 10: Hoare triple {6517#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {6557#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:14:51,701 INFO L290 TraceCheckUtils]: 9: Hoare triple {6580#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [129] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {6517#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:14:51,702 INFO L290 TraceCheckUtils]: 8: Hoare triple {6584#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [132] L28-2-->L27-2_primed: Formula: (let ((.cse3 (<= 50 v_main_~x~0_477)) (.cse0 (= v_main_~y~0_313 v_main_~y~0_312)) (.cse1 (= v_main_~x~0_477 v_main_~x~0_476))) (or (and .cse0 .cse1) (let ((.cse2 (+ v_main_~x~0_477 v_main_~y~0_312))) (and (< .cse2 (+ 101 v_main_~y~0_313)) (= .cse2 (+ v_main_~x~0_476 v_main_~y~0_313)) .cse3 (< v_main_~y~0_313 v_main_~y~0_312))) (and (or (not (< v_main_~x~0_477 100)) (not .cse3)) .cse0 .cse1))) InVars {main_~x~0=v_main_~x~0_477, main_~y~0=v_main_~y~0_313} OutVars{main_~x~0=v_main_~x~0_476, main_~y~0=v_main_~y~0_312} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {6580#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:14:51,703 INFO L290 TraceCheckUtils]: 7: Hoare triple {6584#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [131] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {6584#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:14:51,704 INFO L290 TraceCheckUtils]: 6: Hoare triple {6591#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= 50 main_~y~0) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [130] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_475 v_main_~x~0_474))) (or (and (<= 50 v_main_~x~0_475) .cse0) (and (< v_main_~x~0_474 51) (< v_main_~x~0_475 v_main_~x~0_474)) .cse0)) InVars {main_~x~0=v_main_~x~0_475} OutVars{main_~x~0=v_main_~x~0_474} AuxVars[] AssignedVars[main_~x~0] {6584#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:14:51,705 INFO L290 TraceCheckUtils]: 5: Hoare triple {6509#true} ~x~0 := 0;~y~0 := 50; {6591#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= 50 main_~y~0) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:14:51,705 INFO L272 TraceCheckUtils]: 4: Hoare triple {6509#true} call #t~ret1 := main(); {6509#true} is VALID [2022-04-15 06:14:51,705 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {6509#true} {6509#true} #56#return; {6509#true} is VALID [2022-04-15 06:14:51,705 INFO L290 TraceCheckUtils]: 2: Hoare triple {6509#true} assume true; {6509#true} is VALID [2022-04-15 06:14:51,705 INFO L290 TraceCheckUtils]: 1: Hoare triple {6509#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {6509#true} is VALID [2022-04-15 06:14:51,705 INFO L272 TraceCheckUtils]: 0: Hoare triple {6509#true} call ULTIMATE.init(); {6509#true} is VALID [2022-04-15 06:14:51,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:14:51,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92059494] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:14:51,706 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:14:51,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:14:52,693 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:14:52,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [29833450] [2022-04-15 06:14:52,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [29833450] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:14:52,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:14:52,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-04-15 06:14:52,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831976095] [2022-04-15 06:14:52,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:14:52,694 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-04-15 06:14:52,694 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:14:52,694 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 26 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:52,738 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 49 edges. 49 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:14:52,738 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-04-15 06:14:52,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:14:52,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-04-15 06:14:52,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1117, Unknown=0, NotChecked=0, Total=1332 [2022-04-15 06:14:52,739 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand has 26 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:55,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:14:55,235 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2022-04-15 06:14:55,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-04-15 06:14:55,236 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-04-15 06:14:55,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:14:55,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:55,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 65 transitions. [2022-04-15 06:14:55,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:55,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 65 transitions. [2022-04-15 06:14:55,238 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 23 states and 65 transitions. [2022-04-15 06:14:55,334 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 65 edges. 65 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:14:55,335 INFO L225 Difference]: With dead ends: 60 [2022-04-15 06:14:55,335 INFO L226 Difference]: Without dead ends: 53 [2022-04-15 06:14:55,336 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 754 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=401, Invalid=2791, Unknown=0, NotChecked=0, Total=3192 [2022-04-15 06:14:55,336 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 28 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-15 06:14:55,336 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 128 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-15 06:14:55,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-04-15 06:14:55,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-04-15 06:14:55,433 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:14:55,433 INFO L82 GeneralOperation]: Start isEquivalent. First operand 53 states. Second operand has 53 states, 48 states have (on average 1.0625) internal successors, (51), 48 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:55,434 INFO L74 IsIncluded]: Start isIncluded. First operand 53 states. Second operand has 53 states, 48 states have (on average 1.0625) internal successors, (51), 48 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:55,434 INFO L87 Difference]: Start difference. First operand 53 states. Second operand has 53 states, 48 states have (on average 1.0625) internal successors, (51), 48 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:55,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:14:55,435 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2022-04-15 06:14:55,435 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2022-04-15 06:14:55,435 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:14:55,435 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:14:55,435 INFO L74 IsIncluded]: Start isIncluded. First operand has 53 states, 48 states have (on average 1.0625) internal successors, (51), 48 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 53 states. [2022-04-15 06:14:55,435 INFO L87 Difference]: Start difference. First operand has 53 states, 48 states have (on average 1.0625) internal successors, (51), 48 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 53 states. [2022-04-15 06:14:55,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:14:55,436 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2022-04-15 06:14:55,436 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2022-04-15 06:14:55,436 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:14:55,436 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:14:55,436 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:14:55,437 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:14:55,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.0625) internal successors, (51), 48 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:55,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2022-04-15 06:14:55,437 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 49 [2022-04-15 06:14:55,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:14:55,438 INFO L478 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2022-04-15 06:14:55,438 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:14:55,438 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 53 states and 55 transitions. [2022-04-15 06:14:55,503 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 55 edges. 55 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:14:55,503 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2022-04-15 06:14:55,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-15 06:14:55,503 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:14:55,504 INFO L499 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:14:55,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-04-15 06:14:55,704 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:14:55,704 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:14:55,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:14:55,705 INFO L85 PathProgramCache]: Analyzing trace with hash 71027700, now seen corresponding path program 19 times [2022-04-15 06:14:55,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:14:55,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1763244288] [2022-04-15 06:14:59,779 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-15 06:14:59,838 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:15:00,149 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:15:00,150 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:15:00,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1492698316, now seen corresponding path program 1 times [2022-04-15 06:15:00,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:15:00,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766543673] [2022-04-15 06:15:00,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:15:00,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:15:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:00,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:15:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:00,300 INFO L290 TraceCheckUtils]: 0: Hoare triple {7015#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {7004#true} is VALID [2022-04-15 06:15:00,301 INFO L290 TraceCheckUtils]: 1: Hoare triple {7004#true} assume true; {7004#true} is VALID [2022-04-15 06:15:00,301 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {7004#true} {7004#true} #56#return; {7004#true} is VALID [2022-04-15 06:15:00,301 INFO L272 TraceCheckUtils]: 0: Hoare triple {7004#true} call ULTIMATE.init(); {7015#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:15:00,301 INFO L290 TraceCheckUtils]: 1: Hoare triple {7015#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {7004#true} is VALID [2022-04-15 06:15:00,301 INFO L290 TraceCheckUtils]: 2: Hoare triple {7004#true} assume true; {7004#true} is VALID [2022-04-15 06:15:00,302 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {7004#true} {7004#true} #56#return; {7004#true} is VALID [2022-04-15 06:15:00,302 INFO L272 TraceCheckUtils]: 4: Hoare triple {7004#true} call #t~ret1 := main(); {7004#true} is VALID [2022-04-15 06:15:00,302 INFO L290 TraceCheckUtils]: 5: Hoare triple {7004#true} ~x~0 := 0;~y~0 := 50; {7009#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:15:00,303 INFO L290 TraceCheckUtils]: 6: Hoare triple {7009#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [134] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_511 v_main_~x~0_510))) (or (and (< v_main_~x~0_510 51) (< v_main_~x~0_511 v_main_~x~0_510)) .cse0 (and .cse0 (<= 50 v_main_~x~0_511)))) InVars {main_~x~0=v_main_~x~0_511} OutVars{main_~x~0=v_main_~x~0_510} AuxVars[] AssignedVars[main_~x~0] {7010#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:15:00,303 INFO L290 TraceCheckUtils]: 7: Hoare triple {7010#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [135] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {7010#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:15:00,304 INFO L290 TraceCheckUtils]: 8: Hoare triple {7010#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [136] L28-2-->L27-2_primed: Formula: (let ((.cse0 (<= 50 v_main_~x~0_513)) (.cse1 (= v_main_~x~0_513 v_main_~x~0_512))) (or (and (or (not (< v_main_~x~0_513 100)) (not .cse0)) .cse1 (= v_main_~y~0_339 v_main_~y~0_340)) (and .cse0 (< v_main_~x~0_513 v_main_~x~0_512) (= (+ v_main_~x~0_513 v_main_~y~0_339) (+ v_main_~x~0_512 v_main_~y~0_340)) (< v_main_~x~0_512 101)) (and .cse1 (= v_main_~y~0_340 v_main_~y~0_339)))) InVars {main_~x~0=v_main_~x~0_513, main_~y~0=v_main_~y~0_340} OutVars{main_~x~0=v_main_~x~0_512, main_~y~0=v_main_~y~0_339} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {7011#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:15:00,305 INFO L290 TraceCheckUtils]: 9: Hoare triple {7011#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [133] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {7012#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:15:00,306 INFO L272 TraceCheckUtils]: 10: Hoare triple {7012#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {7013#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:15:00,306 INFO L290 TraceCheckUtils]: 11: Hoare triple {7013#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {7014#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:15:00,307 INFO L290 TraceCheckUtils]: 12: Hoare triple {7014#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {7005#false} is VALID [2022-04-15 06:15:00,307 INFO L290 TraceCheckUtils]: 13: Hoare triple {7005#false} assume !false; {7005#false} is VALID [2022-04-15 06:15:00,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:15:00,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:15:00,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766543673] [2022-04-15 06:15:00,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766543673] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:15:00,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628883132] [2022-04-15 06:15:00,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:15:00,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:15:00,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:15:00,309 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:15:00,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-04-15 06:15:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:00,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:15:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:00,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:15:00,953 INFO L272 TraceCheckUtils]: 0: Hoare triple {7004#true} call ULTIMATE.init(); {7004#true} is VALID [2022-04-15 06:15:00,953 INFO L290 TraceCheckUtils]: 1: Hoare triple {7004#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {7004#true} is VALID [2022-04-15 06:15:00,953 INFO L290 TraceCheckUtils]: 2: Hoare triple {7004#true} assume true; {7004#true} is VALID [2022-04-15 06:15:00,953 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {7004#true} {7004#true} #56#return; {7004#true} is VALID [2022-04-15 06:15:00,953 INFO L272 TraceCheckUtils]: 4: Hoare triple {7004#true} call #t~ret1 := main(); {7004#true} is VALID [2022-04-15 06:15:00,959 INFO L290 TraceCheckUtils]: 5: Hoare triple {7004#true} ~x~0 := 0;~y~0 := 50; {7034#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:15:00,960 INFO L290 TraceCheckUtils]: 6: Hoare triple {7034#(and (<= main_~x~0 0) (= main_~y~0 50))} [134] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_511 v_main_~x~0_510))) (or (and (< v_main_~x~0_510 51) (< v_main_~x~0_511 v_main_~x~0_510)) .cse0 (and .cse0 (<= 50 v_main_~x~0_511)))) InVars {main_~x~0=v_main_~x~0_511} OutVars{main_~x~0=v_main_~x~0_510} AuxVars[] AssignedVars[main_~x~0] {7038#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:15:00,960 INFO L290 TraceCheckUtils]: 7: Hoare triple {7038#(and (= main_~y~0 50) (< main_~x~0 51))} [135] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {7038#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:15:00,961 INFO L290 TraceCheckUtils]: 8: Hoare triple {7038#(and (= main_~y~0 50) (< main_~x~0 51))} [136] L28-2-->L27-2_primed: Formula: (let ((.cse0 (<= 50 v_main_~x~0_513)) (.cse1 (= v_main_~x~0_513 v_main_~x~0_512))) (or (and (or (not (< v_main_~x~0_513 100)) (not .cse0)) .cse1 (= v_main_~y~0_339 v_main_~y~0_340)) (and .cse0 (< v_main_~x~0_513 v_main_~x~0_512) (= (+ v_main_~x~0_513 v_main_~y~0_339) (+ v_main_~x~0_512 v_main_~y~0_340)) (< v_main_~x~0_512 101)) (and .cse1 (= v_main_~y~0_340 v_main_~y~0_339)))) InVars {main_~x~0=v_main_~x~0_513, main_~y~0=v_main_~y~0_340} OutVars{main_~x~0=v_main_~x~0_512, main_~y~0=v_main_~y~0_339} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {7045#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:15:00,962 INFO L290 TraceCheckUtils]: 9: Hoare triple {7045#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [133] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {7012#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:15:00,963 INFO L272 TraceCheckUtils]: 10: Hoare triple {7012#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {7052#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:15:00,963 INFO L290 TraceCheckUtils]: 11: Hoare triple {7052#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {7056#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:15:00,964 INFO L290 TraceCheckUtils]: 12: Hoare triple {7056#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {7005#false} is VALID [2022-04-15 06:15:00,964 INFO L290 TraceCheckUtils]: 13: Hoare triple {7005#false} assume !false; {7005#false} is VALID [2022-04-15 06:15:00,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:15:00,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:15:01,520 INFO L290 TraceCheckUtils]: 13: Hoare triple {7005#false} assume !false; {7005#false} is VALID [2022-04-15 06:15:01,521 INFO L290 TraceCheckUtils]: 12: Hoare triple {7056#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {7005#false} is VALID [2022-04-15 06:15:01,521 INFO L290 TraceCheckUtils]: 11: Hoare triple {7052#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {7056#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:15:01,522 INFO L272 TraceCheckUtils]: 10: Hoare triple {7012#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {7052#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:15:01,523 INFO L290 TraceCheckUtils]: 9: Hoare triple {7075#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [133] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {7012#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:15:01,524 INFO L290 TraceCheckUtils]: 8: Hoare triple {7079#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (< main_~x~0 (+ main_~y~0 1)) (not (<= 50 main_~x~0)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [136] L28-2-->L27-2_primed: Formula: (let ((.cse0 (<= 50 v_main_~x~0_513)) (.cse1 (= v_main_~x~0_513 v_main_~x~0_512))) (or (and (or (not (< v_main_~x~0_513 100)) (not .cse0)) .cse1 (= v_main_~y~0_339 v_main_~y~0_340)) (and .cse0 (< v_main_~x~0_513 v_main_~x~0_512) (= (+ v_main_~x~0_513 v_main_~y~0_339) (+ v_main_~x~0_512 v_main_~y~0_340)) (< v_main_~x~0_512 101)) (and .cse1 (= v_main_~y~0_340 v_main_~y~0_339)))) InVars {main_~x~0=v_main_~x~0_513, main_~y~0=v_main_~y~0_340} OutVars{main_~x~0=v_main_~x~0_512, main_~y~0=v_main_~y~0_339} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {7075#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:15:01,525 INFO L290 TraceCheckUtils]: 7: Hoare triple {7079#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (< main_~x~0 (+ main_~y~0 1)) (not (<= 50 main_~x~0)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [135] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {7079#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (< main_~x~0 (+ main_~y~0 1)) (not (<= 50 main_~x~0)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:15:01,526 INFO L290 TraceCheckUtils]: 6: Hoare triple {7086#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)) (or (and (< main_~x~0 (+ main_~y~0 1)) (<= 50 main_~y~0)) (<= 99 main_~y~0)))} [134] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_511 v_main_~x~0_510))) (or (and (< v_main_~x~0_510 51) (< v_main_~x~0_511 v_main_~x~0_510)) .cse0 (and .cse0 (<= 50 v_main_~x~0_511)))) InVars {main_~x~0=v_main_~x~0_511} OutVars{main_~x~0=v_main_~x~0_510} AuxVars[] AssignedVars[main_~x~0] {7079#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (< main_~x~0 (+ main_~y~0 1)) (not (<= 50 main_~x~0)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:15:01,526 INFO L290 TraceCheckUtils]: 5: Hoare triple {7004#true} ~x~0 := 0;~y~0 := 50; {7086#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)) (or (and (< main_~x~0 (+ main_~y~0 1)) (<= 50 main_~y~0)) (<= 99 main_~y~0)))} is VALID [2022-04-15 06:15:01,526 INFO L272 TraceCheckUtils]: 4: Hoare triple {7004#true} call #t~ret1 := main(); {7004#true} is VALID [2022-04-15 06:15:01,526 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {7004#true} {7004#true} #56#return; {7004#true} is VALID [2022-04-15 06:15:01,526 INFO L290 TraceCheckUtils]: 2: Hoare triple {7004#true} assume true; {7004#true} is VALID [2022-04-15 06:15:01,527 INFO L290 TraceCheckUtils]: 1: Hoare triple {7004#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {7004#true} is VALID [2022-04-15 06:15:01,527 INFO L272 TraceCheckUtils]: 0: Hoare triple {7004#true} call ULTIMATE.init(); {7004#true} is VALID [2022-04-15 06:15:01,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:15:01,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628883132] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:15:01,527 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:15:01,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:15:02,465 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:15:02,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1763244288] [2022-04-15 06:15:02,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1763244288] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:15:02,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:15:02,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-04-15 06:15:02,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998399878] [2022-04-15 06:15:02,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:15:02,466 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 25 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2022-04-15 06:15:02,467 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:15:02,467 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 25 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:02,513 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 51 edges. 51 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:15:02,514 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-04-15 06:15:02,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:15:02,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-04-15 06:15:02,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1184, Unknown=0, NotChecked=0, Total=1406 [2022-04-15 06:15:02,515 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 25 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:05,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:15:05,268 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2022-04-15 06:15:05,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-04-15 06:15:05,269 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 25 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2022-04-15 06:15:05,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:15:05,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 25 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:05,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 67 transitions. [2022-04-15 06:15:05,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 25 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:05,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 67 transitions. [2022-04-15 06:15:05,271 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 24 states and 67 transitions. [2022-04-15 06:15:05,344 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 67 edges. 67 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:15:05,345 INFO L225 Difference]: With dead ends: 62 [2022-04-15 06:15:05,346 INFO L226 Difference]: Without dead ends: 55 [2022-04-15 06:15:05,346 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 798 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=417, Invalid=3005, Unknown=0, NotChecked=0, Total=3422 [2022-04-15 06:15:05,347 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-15 06:15:05,347 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 133 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-15 06:15:05,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-04-15 06:15:05,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-04-15 06:15:05,442 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:15:05,443 INFO L82 GeneralOperation]: Start isEquivalent. First operand 55 states. Second operand has 55 states, 50 states have (on average 1.06) internal successors, (53), 50 states have internal predecessors, (53), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:05,443 INFO L74 IsIncluded]: Start isIncluded. First operand 55 states. Second operand has 55 states, 50 states have (on average 1.06) internal successors, (53), 50 states have internal predecessors, (53), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:05,443 INFO L87 Difference]: Start difference. First operand 55 states. Second operand has 55 states, 50 states have (on average 1.06) internal successors, (53), 50 states have internal predecessors, (53), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:05,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:15:05,444 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2022-04-15 06:15:05,444 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2022-04-15 06:15:05,445 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:15:05,445 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:15:05,445 INFO L74 IsIncluded]: Start isIncluded. First operand has 55 states, 50 states have (on average 1.06) internal successors, (53), 50 states have internal predecessors, (53), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 55 states. [2022-04-15 06:15:05,445 INFO L87 Difference]: Start difference. First operand has 55 states, 50 states have (on average 1.06) internal successors, (53), 50 states have internal predecessors, (53), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 55 states. [2022-04-15 06:15:05,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:15:05,446 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2022-04-15 06:15:05,446 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2022-04-15 06:15:05,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:15:05,446 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:15:05,446 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:15:05,446 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:15:05,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.06) internal successors, (53), 50 states have internal predecessors, (53), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:05,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2022-04-15 06:15:05,447 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 51 [2022-04-15 06:15:05,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:15:05,448 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2022-04-15 06:15:05,448 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 25 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:05,448 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 55 states and 57 transitions. [2022-04-15 06:15:05,543 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 57 edges. 57 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:15:05,544 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2022-04-15 06:15:05,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-04-15 06:15:05,544 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:15:05,544 INFO L499 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:15:05,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-04-15 06:15:05,745 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:15:05,745 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:15:05,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:15:05,745 INFO L85 PathProgramCache]: Analyzing trace with hash 607815247, now seen corresponding path program 20 times [2022-04-15 06:15:05,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:15:05,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [91813545] [2022-04-15 06:15:07,909 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:15:08,160 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:15:08,161 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:15:08,164 INFO L85 PathProgramCache]: Analyzing trace with hash -752736820, now seen corresponding path program 1 times [2022-04-15 06:15:08,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:15:08,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996463181] [2022-04-15 06:15:08,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:15:08,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:15:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:08,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:15:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:08,352 INFO L290 TraceCheckUtils]: 0: Hoare triple {7525#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {7514#true} is VALID [2022-04-15 06:15:08,353 INFO L290 TraceCheckUtils]: 1: Hoare triple {7514#true} assume true; {7514#true} is VALID [2022-04-15 06:15:08,353 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {7514#true} {7514#true} #56#return; {7514#true} is VALID [2022-04-15 06:15:08,353 INFO L272 TraceCheckUtils]: 0: Hoare triple {7514#true} call ULTIMATE.init(); {7525#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:15:08,353 INFO L290 TraceCheckUtils]: 1: Hoare triple {7525#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {7514#true} is VALID [2022-04-15 06:15:08,353 INFO L290 TraceCheckUtils]: 2: Hoare triple {7514#true} assume true; {7514#true} is VALID [2022-04-15 06:15:08,354 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {7514#true} {7514#true} #56#return; {7514#true} is VALID [2022-04-15 06:15:08,354 INFO L272 TraceCheckUtils]: 4: Hoare triple {7514#true} call #t~ret1 := main(); {7514#true} is VALID [2022-04-15 06:15:08,354 INFO L290 TraceCheckUtils]: 5: Hoare triple {7514#true} ~x~0 := 0;~y~0 := 50; {7519#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:15:08,355 INFO L290 TraceCheckUtils]: 6: Hoare triple {7519#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [138] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_548 v_main_~x~0_547))) (or .cse0 (and (not (< v_main_~x~0_548 50)) .cse0) (and (< v_main_~x~0_548 v_main_~x~0_547) (< v_main_~x~0_547 51)))) InVars {main_~x~0=v_main_~x~0_548} OutVars{main_~x~0=v_main_~x~0_547} AuxVars[] AssignedVars[main_~x~0] {7520#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:15:08,355 INFO L290 TraceCheckUtils]: 7: Hoare triple {7520#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [139] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {7520#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:15:08,356 INFO L290 TraceCheckUtils]: 8: Hoare triple {7520#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [140] L28-2-->L27-2_primed: Formula: (let ((.cse0 (<= 50 v_main_~x~0_550))) (or (and (or (not (< v_main_~x~0_550 100)) (not .cse0)) (= v_main_~x~0_549 v_main_~x~0_550) (= v_main_~y~0_367 v_main_~y~0_368)) (and (= v_main_~y~0_368 v_main_~y~0_367) (= v_main_~x~0_550 v_main_~x~0_549)) (and (< v_main_~x~0_549 101) (< v_main_~x~0_550 v_main_~x~0_549) .cse0 (= (+ v_main_~x~0_549 v_main_~y~0_368) (+ v_main_~x~0_550 v_main_~y~0_367))))) InVars {main_~x~0=v_main_~x~0_550, main_~y~0=v_main_~y~0_368} OutVars{main_~x~0=v_main_~x~0_549, main_~y~0=v_main_~y~0_367} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {7521#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:15:08,357 INFO L290 TraceCheckUtils]: 9: Hoare triple {7521#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [137] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {7522#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:15:08,358 INFO L272 TraceCheckUtils]: 10: Hoare triple {7522#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {7523#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:15:08,358 INFO L290 TraceCheckUtils]: 11: Hoare triple {7523#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {7524#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:15:08,358 INFO L290 TraceCheckUtils]: 12: Hoare triple {7524#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {7515#false} is VALID [2022-04-15 06:15:08,358 INFO L290 TraceCheckUtils]: 13: Hoare triple {7515#false} assume !false; {7515#false} is VALID [2022-04-15 06:15:08,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:15:08,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:15:08,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996463181] [2022-04-15 06:15:08,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996463181] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:15:08,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073472341] [2022-04-15 06:15:08,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:15:08,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:15:08,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:15:08,371 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:15:08,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-04-15 06:15:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:08,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:15:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:08,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:15:08,800 INFO L272 TraceCheckUtils]: 0: Hoare triple {7514#true} call ULTIMATE.init(); {7514#true} is VALID [2022-04-15 06:15:08,800 INFO L290 TraceCheckUtils]: 1: Hoare triple {7514#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {7514#true} is VALID [2022-04-15 06:15:08,801 INFO L290 TraceCheckUtils]: 2: Hoare triple {7514#true} assume true; {7514#true} is VALID [2022-04-15 06:15:08,801 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {7514#true} {7514#true} #56#return; {7514#true} is VALID [2022-04-15 06:15:08,801 INFO L272 TraceCheckUtils]: 4: Hoare triple {7514#true} call #t~ret1 := main(); {7514#true} is VALID [2022-04-15 06:15:08,801 INFO L290 TraceCheckUtils]: 5: Hoare triple {7514#true} ~x~0 := 0;~y~0 := 50; {7544#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:15:08,802 INFO L290 TraceCheckUtils]: 6: Hoare triple {7544#(and (<= main_~x~0 0) (= main_~y~0 50))} [138] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_548 v_main_~x~0_547))) (or .cse0 (and (not (< v_main_~x~0_548 50)) .cse0) (and (< v_main_~x~0_548 v_main_~x~0_547) (< v_main_~x~0_547 51)))) InVars {main_~x~0=v_main_~x~0_548} OutVars{main_~x~0=v_main_~x~0_547} AuxVars[] AssignedVars[main_~x~0] {7548#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:15:08,802 INFO L290 TraceCheckUtils]: 7: Hoare triple {7548#(and (= main_~y~0 50) (< main_~x~0 51))} [139] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {7548#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:15:08,803 INFO L290 TraceCheckUtils]: 8: Hoare triple {7548#(and (= main_~y~0 50) (< main_~x~0 51))} [140] L28-2-->L27-2_primed: Formula: (let ((.cse0 (<= 50 v_main_~x~0_550))) (or (and (or (not (< v_main_~x~0_550 100)) (not .cse0)) (= v_main_~x~0_549 v_main_~x~0_550) (= v_main_~y~0_367 v_main_~y~0_368)) (and (= v_main_~y~0_368 v_main_~y~0_367) (= v_main_~x~0_550 v_main_~x~0_549)) (and (< v_main_~x~0_549 101) (< v_main_~x~0_550 v_main_~x~0_549) .cse0 (= (+ v_main_~x~0_549 v_main_~y~0_368) (+ v_main_~x~0_550 v_main_~y~0_367))))) InVars {main_~x~0=v_main_~x~0_550, main_~y~0=v_main_~y~0_368} OutVars{main_~x~0=v_main_~x~0_549, main_~y~0=v_main_~y~0_367} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {7555#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:15:08,804 INFO L290 TraceCheckUtils]: 9: Hoare triple {7555#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [137] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {7522#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:15:08,805 INFO L272 TraceCheckUtils]: 10: Hoare triple {7522#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {7562#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:15:08,805 INFO L290 TraceCheckUtils]: 11: Hoare triple {7562#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {7566#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:15:08,805 INFO L290 TraceCheckUtils]: 12: Hoare triple {7566#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {7515#false} is VALID [2022-04-15 06:15:08,805 INFO L290 TraceCheckUtils]: 13: Hoare triple {7515#false} assume !false; {7515#false} is VALID [2022-04-15 06:15:08,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:15:08,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:15:09,390 INFO L290 TraceCheckUtils]: 13: Hoare triple {7515#false} assume !false; {7515#false} is VALID [2022-04-15 06:15:09,392 INFO L290 TraceCheckUtils]: 12: Hoare triple {7566#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {7515#false} is VALID [2022-04-15 06:15:09,392 INFO L290 TraceCheckUtils]: 11: Hoare triple {7562#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {7566#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:15:09,393 INFO L272 TraceCheckUtils]: 10: Hoare triple {7522#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {7562#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:15:09,394 INFO L290 TraceCheckUtils]: 9: Hoare triple {7585#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [137] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {7522#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:15:09,395 INFO L290 TraceCheckUtils]: 8: Hoare triple {7589#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [140] L28-2-->L27-2_primed: Formula: (let ((.cse0 (<= 50 v_main_~x~0_550))) (or (and (or (not (< v_main_~x~0_550 100)) (not .cse0)) (= v_main_~x~0_549 v_main_~x~0_550) (= v_main_~y~0_367 v_main_~y~0_368)) (and (= v_main_~y~0_368 v_main_~y~0_367) (= v_main_~x~0_550 v_main_~x~0_549)) (and (< v_main_~x~0_549 101) (< v_main_~x~0_550 v_main_~x~0_549) .cse0 (= (+ v_main_~x~0_549 v_main_~y~0_368) (+ v_main_~x~0_550 v_main_~y~0_367))))) InVars {main_~x~0=v_main_~x~0_550, main_~y~0=v_main_~y~0_368} OutVars{main_~x~0=v_main_~x~0_549, main_~y~0=v_main_~y~0_367} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {7585#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:15:09,395 INFO L290 TraceCheckUtils]: 7: Hoare triple {7589#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [139] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {7589#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:15:09,397 INFO L290 TraceCheckUtils]: 6: Hoare triple {7596#(and (<= 50 main_~y~0) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [138] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_548 v_main_~x~0_547))) (or .cse0 (and (not (< v_main_~x~0_548 50)) .cse0) (and (< v_main_~x~0_548 v_main_~x~0_547) (< v_main_~x~0_547 51)))) InVars {main_~x~0=v_main_~x~0_548} OutVars{main_~x~0=v_main_~x~0_547} AuxVars[] AssignedVars[main_~x~0] {7589#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:15:09,397 INFO L290 TraceCheckUtils]: 5: Hoare triple {7514#true} ~x~0 := 0;~y~0 := 50; {7596#(and (<= 50 main_~y~0) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:15:09,397 INFO L272 TraceCheckUtils]: 4: Hoare triple {7514#true} call #t~ret1 := main(); {7514#true} is VALID [2022-04-15 06:15:09,397 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {7514#true} {7514#true} #56#return; {7514#true} is VALID [2022-04-15 06:15:09,397 INFO L290 TraceCheckUtils]: 2: Hoare triple {7514#true} assume true; {7514#true} is VALID [2022-04-15 06:15:09,397 INFO L290 TraceCheckUtils]: 1: Hoare triple {7514#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {7514#true} is VALID [2022-04-15 06:15:09,398 INFO L272 TraceCheckUtils]: 0: Hoare triple {7514#true} call ULTIMATE.init(); {7514#true} is VALID [2022-04-15 06:15:09,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:15:09,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073472341] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:15:09,398 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:15:09,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:15:10,406 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:15:10,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [91813545] [2022-04-15 06:15:10,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [91813545] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:15:10,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:15:10,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-04-15 06:15:10,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440701812] [2022-04-15 06:15:10,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:15:10,407 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 26 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2022-04-15 06:15:10,407 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:15:10,408 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 26 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:10,465 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 53 edges. 53 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:15:10,466 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-04-15 06:15:10,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:15:10,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-04-15 06:15:10,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1253, Unknown=0, NotChecked=0, Total=1482 [2022-04-15 06:15:10,467 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 26 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:13,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:15:13,520 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2022-04-15 06:15:13,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-04-15 06:15:13,520 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 26 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2022-04-15 06:15:13,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:15:13,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 26 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:13,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 69 transitions. [2022-04-15 06:15:13,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 26 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:13,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 69 transitions. [2022-04-15 06:15:13,522 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 25 states and 69 transitions. [2022-04-15 06:15:13,593 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 69 edges. 69 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:15:13,593 INFO L225 Difference]: With dead ends: 64 [2022-04-15 06:15:13,593 INFO L226 Difference]: Without dead ends: 57 [2022-04-15 06:15:13,594 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 843 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=433, Invalid=3227, Unknown=0, NotChecked=0, Total=3660 [2022-04-15 06:15:13,595 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 30 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-15 06:15:13,595 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 138 Invalid, 1302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-15 06:15:13,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-04-15 06:15:13,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-04-15 06:15:13,696 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:15:13,696 INFO L82 GeneralOperation]: Start isEquivalent. First operand 57 states. Second operand has 57 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 52 states have internal predecessors, (55), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:13,696 INFO L74 IsIncluded]: Start isIncluded. First operand 57 states. Second operand has 57 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 52 states have internal predecessors, (55), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:13,696 INFO L87 Difference]: Start difference. First operand 57 states. Second operand has 57 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 52 states have internal predecessors, (55), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:13,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:15:13,697 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2022-04-15 06:15:13,697 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2022-04-15 06:15:13,697 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:15:13,697 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:15:13,698 INFO L74 IsIncluded]: Start isIncluded. First operand has 57 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 52 states have internal predecessors, (55), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 57 states. [2022-04-15 06:15:13,698 INFO L87 Difference]: Start difference. First operand has 57 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 52 states have internal predecessors, (55), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 57 states. [2022-04-15 06:15:13,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:15:13,699 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2022-04-15 06:15:13,699 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2022-04-15 06:15:13,699 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:15:13,699 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:15:13,699 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:15:13,699 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:15:13,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 52 states have internal predecessors, (55), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:13,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2022-04-15 06:15:13,700 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 53 [2022-04-15 06:15:13,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:15:13,700 INFO L478 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2022-04-15 06:15:13,700 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 26 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:13,700 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 57 states and 59 transitions. [2022-04-15 06:15:13,756 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 59 edges. 59 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:15:13,756 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2022-04-15 06:15:13,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-15 06:15:13,757 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:15:13,757 INFO L499 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:15:13,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-04-15 06:15:13,957 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-04-15 06:15:13,958 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:15:13,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:15:13,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1064572394, now seen corresponding path program 21 times [2022-04-15 06:15:13,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:15:13,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [411208918] [2022-04-15 06:15:16,145 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:15:18,469 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:15:18,470 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:15:18,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1296795340, now seen corresponding path program 1 times [2022-04-15 06:15:18,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:15:18,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076443934] [2022-04-15 06:15:18,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:15:18,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:15:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:18,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:15:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:18,641 INFO L290 TraceCheckUtils]: 0: Hoare triple {8050#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {8039#true} is VALID [2022-04-15 06:15:18,641 INFO L290 TraceCheckUtils]: 1: Hoare triple {8039#true} assume true; {8039#true} is VALID [2022-04-15 06:15:18,642 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {8039#true} {8039#true} #56#return; {8039#true} is VALID [2022-04-15 06:15:18,642 INFO L272 TraceCheckUtils]: 0: Hoare triple {8039#true} call ULTIMATE.init(); {8050#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:15:18,642 INFO L290 TraceCheckUtils]: 1: Hoare triple {8050#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {8039#true} is VALID [2022-04-15 06:15:18,642 INFO L290 TraceCheckUtils]: 2: Hoare triple {8039#true} assume true; {8039#true} is VALID [2022-04-15 06:15:18,642 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {8039#true} {8039#true} #56#return; {8039#true} is VALID [2022-04-15 06:15:18,642 INFO L272 TraceCheckUtils]: 4: Hoare triple {8039#true} call #t~ret1 := main(); {8039#true} is VALID [2022-04-15 06:15:18,643 INFO L290 TraceCheckUtils]: 5: Hoare triple {8039#true} ~x~0 := 0;~y~0 := 50; {8044#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:15:18,644 INFO L290 TraceCheckUtils]: 6: Hoare triple {8044#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [142] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_586 v_main_~x~0_585))) (or (and (<= 50 v_main_~x~0_586) .cse0) .cse0 (and (< v_main_~x~0_586 v_main_~x~0_585) (< v_main_~x~0_585 51)))) InVars {main_~x~0=v_main_~x~0_586} OutVars{main_~x~0=v_main_~x~0_585} AuxVars[] AssignedVars[main_~x~0] {8045#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:15:18,644 INFO L290 TraceCheckUtils]: 7: Hoare triple {8045#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [143] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {8045#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:15:18,645 INFO L290 TraceCheckUtils]: 8: Hoare triple {8045#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [144] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_397 v_main_~y~0_396)) (.cse2 (= v_main_~x~0_588 v_main_~x~0_587)) (.cse1 (<= 50 v_main_~x~0_588))) (or (and .cse0 (or (not .cse1) (not (< v_main_~x~0_588 100))) .cse2) (and .cse0 .cse2) (let ((.cse3 (+ v_main_~x~0_588 v_main_~y~0_396))) (and (< v_main_~y~0_397 v_main_~y~0_396) (= .cse3 (+ v_main_~x~0_587 v_main_~y~0_397)) (< .cse3 (+ 101 v_main_~y~0_397)) .cse1)))) InVars {main_~x~0=v_main_~x~0_588, main_~y~0=v_main_~y~0_397} OutVars{main_~x~0=v_main_~x~0_587, main_~y~0=v_main_~y~0_396} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {8046#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:15:18,646 INFO L290 TraceCheckUtils]: 9: Hoare triple {8046#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [141] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {8047#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:15:18,647 INFO L272 TraceCheckUtils]: 10: Hoare triple {8047#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {8048#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:15:18,647 INFO L290 TraceCheckUtils]: 11: Hoare triple {8048#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {8049#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:15:18,647 INFO L290 TraceCheckUtils]: 12: Hoare triple {8049#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {8040#false} is VALID [2022-04-15 06:15:18,648 INFO L290 TraceCheckUtils]: 13: Hoare triple {8040#false} assume !false; {8040#false} is VALID [2022-04-15 06:15:18,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:15:18,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:15:18,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076443934] [2022-04-15 06:15:18,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076443934] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:15:18,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287668534] [2022-04-15 06:15:18,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:15:18,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:15:18,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:15:18,650 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:15:18,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-04-15 06:15:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:18,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:15:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:18,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:15:19,052 INFO L272 TraceCheckUtils]: 0: Hoare triple {8039#true} call ULTIMATE.init(); {8039#true} is VALID [2022-04-15 06:15:19,052 INFO L290 TraceCheckUtils]: 1: Hoare triple {8039#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {8039#true} is VALID [2022-04-15 06:15:19,052 INFO L290 TraceCheckUtils]: 2: Hoare triple {8039#true} assume true; {8039#true} is VALID [2022-04-15 06:15:19,052 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {8039#true} {8039#true} #56#return; {8039#true} is VALID [2022-04-15 06:15:19,052 INFO L272 TraceCheckUtils]: 4: Hoare triple {8039#true} call #t~ret1 := main(); {8039#true} is VALID [2022-04-15 06:15:19,053 INFO L290 TraceCheckUtils]: 5: Hoare triple {8039#true} ~x~0 := 0;~y~0 := 50; {8069#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:15:19,054 INFO L290 TraceCheckUtils]: 6: Hoare triple {8069#(and (<= main_~x~0 0) (= main_~y~0 50))} [142] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_586 v_main_~x~0_585))) (or (and (<= 50 v_main_~x~0_586) .cse0) .cse0 (and (< v_main_~x~0_586 v_main_~x~0_585) (< v_main_~x~0_585 51)))) InVars {main_~x~0=v_main_~x~0_586} OutVars{main_~x~0=v_main_~x~0_585} AuxVars[] AssignedVars[main_~x~0] {8073#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:15:19,054 INFO L290 TraceCheckUtils]: 7: Hoare triple {8073#(and (= main_~y~0 50) (< main_~x~0 51))} [143] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {8073#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:15:19,055 INFO L290 TraceCheckUtils]: 8: Hoare triple {8073#(and (= main_~y~0 50) (< main_~x~0 51))} [144] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_397 v_main_~y~0_396)) (.cse2 (= v_main_~x~0_588 v_main_~x~0_587)) (.cse1 (<= 50 v_main_~x~0_588))) (or (and .cse0 (or (not .cse1) (not (< v_main_~x~0_588 100))) .cse2) (and .cse0 .cse2) (let ((.cse3 (+ v_main_~x~0_588 v_main_~y~0_396))) (and (< v_main_~y~0_397 v_main_~y~0_396) (= .cse3 (+ v_main_~x~0_587 v_main_~y~0_397)) (< .cse3 (+ 101 v_main_~y~0_397)) .cse1)))) InVars {main_~x~0=v_main_~x~0_588, main_~y~0=v_main_~y~0_397} OutVars{main_~x~0=v_main_~x~0_587, main_~y~0=v_main_~y~0_396} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {8080#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:15:19,056 INFO L290 TraceCheckUtils]: 9: Hoare triple {8080#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [141] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {8047#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:15:19,056 INFO L272 TraceCheckUtils]: 10: Hoare triple {8047#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {8087#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:15:19,057 INFO L290 TraceCheckUtils]: 11: Hoare triple {8087#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {8091#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:15:19,057 INFO L290 TraceCheckUtils]: 12: Hoare triple {8091#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {8040#false} is VALID [2022-04-15 06:15:19,057 INFO L290 TraceCheckUtils]: 13: Hoare triple {8040#false} assume !false; {8040#false} is VALID [2022-04-15 06:15:19,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:15:19,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:15:19,606 INFO L290 TraceCheckUtils]: 13: Hoare triple {8040#false} assume !false; {8040#false} is VALID [2022-04-15 06:15:19,607 INFO L290 TraceCheckUtils]: 12: Hoare triple {8091#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {8040#false} is VALID [2022-04-15 06:15:19,607 INFO L290 TraceCheckUtils]: 11: Hoare triple {8087#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {8091#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:15:19,608 INFO L272 TraceCheckUtils]: 10: Hoare triple {8047#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {8087#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:15:19,608 INFO L290 TraceCheckUtils]: 9: Hoare triple {8110#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [141] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {8047#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:15:19,610 INFO L290 TraceCheckUtils]: 8: Hoare triple {8114#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [144] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_397 v_main_~y~0_396)) (.cse2 (= v_main_~x~0_588 v_main_~x~0_587)) (.cse1 (<= 50 v_main_~x~0_588))) (or (and .cse0 (or (not .cse1) (not (< v_main_~x~0_588 100))) .cse2) (and .cse0 .cse2) (let ((.cse3 (+ v_main_~x~0_588 v_main_~y~0_396))) (and (< v_main_~y~0_397 v_main_~y~0_396) (= .cse3 (+ v_main_~x~0_587 v_main_~y~0_397)) (< .cse3 (+ 101 v_main_~y~0_397)) .cse1)))) InVars {main_~x~0=v_main_~x~0_588, main_~y~0=v_main_~y~0_397} OutVars{main_~x~0=v_main_~x~0_587, main_~y~0=v_main_~y~0_396} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {8110#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:15:19,610 INFO L290 TraceCheckUtils]: 7: Hoare triple {8114#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [143] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {8114#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:15:19,611 INFO L290 TraceCheckUtils]: 6: Hoare triple {8121#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= 50 main_~y~0) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [142] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_586 v_main_~x~0_585))) (or (and (<= 50 v_main_~x~0_586) .cse0) .cse0 (and (< v_main_~x~0_586 v_main_~x~0_585) (< v_main_~x~0_585 51)))) InVars {main_~x~0=v_main_~x~0_586} OutVars{main_~x~0=v_main_~x~0_585} AuxVars[] AssignedVars[main_~x~0] {8114#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:15:19,612 INFO L290 TraceCheckUtils]: 5: Hoare triple {8039#true} ~x~0 := 0;~y~0 := 50; {8121#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= 50 main_~y~0) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:15:19,612 INFO L272 TraceCheckUtils]: 4: Hoare triple {8039#true} call #t~ret1 := main(); {8039#true} is VALID [2022-04-15 06:15:19,612 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {8039#true} {8039#true} #56#return; {8039#true} is VALID [2022-04-15 06:15:19,612 INFO L290 TraceCheckUtils]: 2: Hoare triple {8039#true} assume true; {8039#true} is VALID [2022-04-15 06:15:19,612 INFO L290 TraceCheckUtils]: 1: Hoare triple {8039#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {8039#true} is VALID [2022-04-15 06:15:19,612 INFO L272 TraceCheckUtils]: 0: Hoare triple {8039#true} call ULTIMATE.init(); {8039#true} is VALID [2022-04-15 06:15:19,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:15:19,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287668534] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:15:19,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:15:19,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:15:20,614 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:15:20,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [411208918] [2022-04-15 06:15:20,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [411208918] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:15:20,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:15:20,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-04-15 06:15:20,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378586607] [2022-04-15 06:15:20,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:15:20,615 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-04-15 06:15:20,616 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:15:20,616 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 29 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:20,660 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 55 edges. 55 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:15:20,660 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-04-15 06:15:20,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:15:20,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-04-15 06:15:20,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1324, Unknown=0, NotChecked=0, Total=1560 [2022-04-15 06:15:20,662 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand has 29 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:23,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:15:23,570 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2022-04-15 06:15:23,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-04-15 06:15:23,570 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-04-15 06:15:23,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:15:23,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:23,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 71 transitions. [2022-04-15 06:15:23,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:23,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 71 transitions. [2022-04-15 06:15:23,572 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 26 states and 71 transitions. [2022-04-15 06:15:23,656 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 71 edges. 71 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:15:23,657 INFO L225 Difference]: With dead ends: 66 [2022-04-15 06:15:23,657 INFO L226 Difference]: Without dead ends: 59 [2022-04-15 06:15:23,658 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=449, Invalid=3457, Unknown=0, NotChecked=0, Total=3906 [2022-04-15 06:15:23,658 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 31 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-15 06:15:23,658 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 138 Invalid, 1357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-15 06:15:23,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-04-15 06:15:23,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-04-15 06:15:23,753 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:15:23,754 INFO L82 GeneralOperation]: Start isEquivalent. First operand 59 states. Second operand has 59 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 54 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:23,754 INFO L74 IsIncluded]: Start isIncluded. First operand 59 states. Second operand has 59 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 54 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:23,754 INFO L87 Difference]: Start difference. First operand 59 states. Second operand has 59 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 54 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:23,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:15:23,755 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2022-04-15 06:15:23,755 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2022-04-15 06:15:23,755 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:15:23,755 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:15:23,755 INFO L74 IsIncluded]: Start isIncluded. First operand has 59 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 54 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 59 states. [2022-04-15 06:15:23,756 INFO L87 Difference]: Start difference. First operand has 59 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 54 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 59 states. [2022-04-15 06:15:23,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:15:23,756 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2022-04-15 06:15:23,756 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2022-04-15 06:15:23,757 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:15:23,757 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:15:23,757 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:15:23,757 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:15:23,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 54 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:23,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2022-04-15 06:15:23,758 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 55 [2022-04-15 06:15:23,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:15:23,758 INFO L478 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2022-04-15 06:15:23,758 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:23,758 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 59 states and 61 transitions. [2022-04-15 06:15:23,847 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 61 edges. 61 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:15:23,847 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2022-04-15 06:15:23,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-04-15 06:15:23,848 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:15:23,848 INFO L499 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:15:23,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-04-15 06:15:24,048 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-04-15 06:15:24,048 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:15:24,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:15:24,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1921526469, now seen corresponding path program 22 times [2022-04-15 06:15:24,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:15:24,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2047420631] [2022-04-15 06:15:28,127 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-15 06:15:28,185 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:15:28,465 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:15:28,467 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:15:28,469 INFO L85 PathProgramCache]: Analyzing trace with hash -948639796, now seen corresponding path program 1 times [2022-04-15 06:15:28,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:15:28,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159694130] [2022-04-15 06:15:28,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:15:28,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:15:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:28,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:15:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:28,617 INFO L290 TraceCheckUtils]: 0: Hoare triple {8590#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {8579#true} is VALID [2022-04-15 06:15:28,618 INFO L290 TraceCheckUtils]: 1: Hoare triple {8579#true} assume true; {8579#true} is VALID [2022-04-15 06:15:28,618 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {8579#true} {8579#true} #56#return; {8579#true} is VALID [2022-04-15 06:15:28,618 INFO L272 TraceCheckUtils]: 0: Hoare triple {8579#true} call ULTIMATE.init(); {8590#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:15:28,618 INFO L290 TraceCheckUtils]: 1: Hoare triple {8590#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {8579#true} is VALID [2022-04-15 06:15:28,618 INFO L290 TraceCheckUtils]: 2: Hoare triple {8579#true} assume true; {8579#true} is VALID [2022-04-15 06:15:28,619 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {8579#true} {8579#true} #56#return; {8579#true} is VALID [2022-04-15 06:15:28,619 INFO L272 TraceCheckUtils]: 4: Hoare triple {8579#true} call #t~ret1 := main(); {8579#true} is VALID [2022-04-15 06:15:28,619 INFO L290 TraceCheckUtils]: 5: Hoare triple {8579#true} ~x~0 := 0;~y~0 := 50; {8584#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:15:28,620 INFO L290 TraceCheckUtils]: 6: Hoare triple {8584#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [146] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_625 v_main_~x~0_624))) (or (and (< v_main_~x~0_625 v_main_~x~0_624) (< v_main_~x~0_624 51)) (and (<= 50 v_main_~x~0_625) .cse0) .cse0)) InVars {main_~x~0=v_main_~x~0_625} OutVars{main_~x~0=v_main_~x~0_624} AuxVars[] AssignedVars[main_~x~0] {8585#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:15:28,621 INFO L290 TraceCheckUtils]: 7: Hoare triple {8585#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [147] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {8585#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:15:28,622 INFO L290 TraceCheckUtils]: 8: Hoare triple {8585#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [148] L28-2-->L27-2_primed: Formula: (let ((.cse1 (= v_main_~x~0_627 v_main_~x~0_626)) (.cse2 (= v_main_~y~0_427 v_main_~y~0_426)) (.cse0 (<= 50 v_main_~x~0_627))) (or (and (or (not (< v_main_~x~0_627 100)) (not .cse0)) .cse1 .cse2) (and .cse1 .cse2) (and (< v_main_~x~0_626 101) (= (+ v_main_~x~0_626 v_main_~y~0_427) (+ v_main_~x~0_627 v_main_~y~0_426)) .cse0 (< v_main_~x~0_627 v_main_~x~0_626)))) InVars {main_~x~0=v_main_~x~0_627, main_~y~0=v_main_~y~0_427} OutVars{main_~x~0=v_main_~x~0_626, main_~y~0=v_main_~y~0_426} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {8586#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:15:28,623 INFO L290 TraceCheckUtils]: 9: Hoare triple {8586#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [145] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {8587#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:15:28,623 INFO L272 TraceCheckUtils]: 10: Hoare triple {8587#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {8588#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:15:28,624 INFO L290 TraceCheckUtils]: 11: Hoare triple {8588#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {8589#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:15:28,624 INFO L290 TraceCheckUtils]: 12: Hoare triple {8589#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {8580#false} is VALID [2022-04-15 06:15:28,624 INFO L290 TraceCheckUtils]: 13: Hoare triple {8580#false} assume !false; {8580#false} is VALID [2022-04-15 06:15:28,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:15:28,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:15:28,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159694130] [2022-04-15 06:15:28,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159694130] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:15:28,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086184428] [2022-04-15 06:15:28,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:15:28,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:15:28,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:15:28,636 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:15:28,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-04-15 06:15:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:28,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:15:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:28,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:15:29,014 INFO L272 TraceCheckUtils]: 0: Hoare triple {8579#true} call ULTIMATE.init(); {8579#true} is VALID [2022-04-15 06:15:29,014 INFO L290 TraceCheckUtils]: 1: Hoare triple {8579#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {8579#true} is VALID [2022-04-15 06:15:29,014 INFO L290 TraceCheckUtils]: 2: Hoare triple {8579#true} assume true; {8579#true} is VALID [2022-04-15 06:15:29,014 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {8579#true} {8579#true} #56#return; {8579#true} is VALID [2022-04-15 06:15:29,014 INFO L272 TraceCheckUtils]: 4: Hoare triple {8579#true} call #t~ret1 := main(); {8579#true} is VALID [2022-04-15 06:15:29,016 INFO L290 TraceCheckUtils]: 5: Hoare triple {8579#true} ~x~0 := 0;~y~0 := 50; {8609#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:15:29,018 INFO L290 TraceCheckUtils]: 6: Hoare triple {8609#(and (<= main_~x~0 0) (= main_~y~0 50))} [146] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_625 v_main_~x~0_624))) (or (and (< v_main_~x~0_625 v_main_~x~0_624) (< v_main_~x~0_624 51)) (and (<= 50 v_main_~x~0_625) .cse0) .cse0)) InVars {main_~x~0=v_main_~x~0_625} OutVars{main_~x~0=v_main_~x~0_624} AuxVars[] AssignedVars[main_~x~0] {8613#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:15:29,019 INFO L290 TraceCheckUtils]: 7: Hoare triple {8613#(and (= main_~y~0 50) (< main_~x~0 51))} [147] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {8613#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:15:29,020 INFO L290 TraceCheckUtils]: 8: Hoare triple {8613#(and (= main_~y~0 50) (< main_~x~0 51))} [148] L28-2-->L27-2_primed: Formula: (let ((.cse1 (= v_main_~x~0_627 v_main_~x~0_626)) (.cse2 (= v_main_~y~0_427 v_main_~y~0_426)) (.cse0 (<= 50 v_main_~x~0_627))) (or (and (or (not (< v_main_~x~0_627 100)) (not .cse0)) .cse1 .cse2) (and .cse1 .cse2) (and (< v_main_~x~0_626 101) (= (+ v_main_~x~0_626 v_main_~y~0_427) (+ v_main_~x~0_627 v_main_~y~0_426)) .cse0 (< v_main_~x~0_627 v_main_~x~0_626)))) InVars {main_~x~0=v_main_~x~0_627, main_~y~0=v_main_~y~0_427} OutVars{main_~x~0=v_main_~x~0_626, main_~y~0=v_main_~y~0_426} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {8620#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:15:29,021 INFO L290 TraceCheckUtils]: 9: Hoare triple {8620#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [145] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {8587#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:15:29,024 INFO L272 TraceCheckUtils]: 10: Hoare triple {8587#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {8627#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:15:29,025 INFO L290 TraceCheckUtils]: 11: Hoare triple {8627#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {8631#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:15:29,034 INFO L290 TraceCheckUtils]: 12: Hoare triple {8631#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {8580#false} is VALID [2022-04-15 06:15:29,034 INFO L290 TraceCheckUtils]: 13: Hoare triple {8580#false} assume !false; {8580#false} is VALID [2022-04-15 06:15:29,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:15:29,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:15:29,558 INFO L290 TraceCheckUtils]: 13: Hoare triple {8580#false} assume !false; {8580#false} is VALID [2022-04-15 06:15:29,559 INFO L290 TraceCheckUtils]: 12: Hoare triple {8631#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {8580#false} is VALID [2022-04-15 06:15:29,560 INFO L290 TraceCheckUtils]: 11: Hoare triple {8627#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {8631#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:15:29,560 INFO L272 TraceCheckUtils]: 10: Hoare triple {8587#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {8627#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:15:29,561 INFO L290 TraceCheckUtils]: 9: Hoare triple {8650#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [145] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {8587#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:15:29,562 INFO L290 TraceCheckUtils]: 8: Hoare triple {8654#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [148] L28-2-->L27-2_primed: Formula: (let ((.cse1 (= v_main_~x~0_627 v_main_~x~0_626)) (.cse2 (= v_main_~y~0_427 v_main_~y~0_426)) (.cse0 (<= 50 v_main_~x~0_627))) (or (and (or (not (< v_main_~x~0_627 100)) (not .cse0)) .cse1 .cse2) (and .cse1 .cse2) (and (< v_main_~x~0_626 101) (= (+ v_main_~x~0_626 v_main_~y~0_427) (+ v_main_~x~0_627 v_main_~y~0_426)) .cse0 (< v_main_~x~0_627 v_main_~x~0_626)))) InVars {main_~x~0=v_main_~x~0_627, main_~y~0=v_main_~y~0_427} OutVars{main_~x~0=v_main_~x~0_626, main_~y~0=v_main_~y~0_426} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {8650#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:15:29,563 INFO L290 TraceCheckUtils]: 7: Hoare triple {8654#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [147] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {8654#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:15:29,564 INFO L290 TraceCheckUtils]: 6: Hoare triple {8661#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= 50 main_~y~0) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [146] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_625 v_main_~x~0_624))) (or (and (< v_main_~x~0_625 v_main_~x~0_624) (< v_main_~x~0_624 51)) (and (<= 50 v_main_~x~0_625) .cse0) .cse0)) InVars {main_~x~0=v_main_~x~0_625} OutVars{main_~x~0=v_main_~x~0_624} AuxVars[] AssignedVars[main_~x~0] {8654#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:15:29,564 INFO L290 TraceCheckUtils]: 5: Hoare triple {8579#true} ~x~0 := 0;~y~0 := 50; {8661#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= 50 main_~y~0) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:15:29,564 INFO L272 TraceCheckUtils]: 4: Hoare triple {8579#true} call #t~ret1 := main(); {8579#true} is VALID [2022-04-15 06:15:29,564 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {8579#true} {8579#true} #56#return; {8579#true} is VALID [2022-04-15 06:15:29,564 INFO L290 TraceCheckUtils]: 2: Hoare triple {8579#true} assume true; {8579#true} is VALID [2022-04-15 06:15:29,565 INFO L290 TraceCheckUtils]: 1: Hoare triple {8579#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {8579#true} is VALID [2022-04-15 06:15:29,565 INFO L272 TraceCheckUtils]: 0: Hoare triple {8579#true} call ULTIMATE.init(); {8579#true} is VALID [2022-04-15 06:15:29,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:15:29,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086184428] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:15:29,565 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:15:29,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:15:30,655 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:15:30,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2047420631] [2022-04-15 06:15:30,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2047420631] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:15:30,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:15:30,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-04-15 06:15:30,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722666438] [2022-04-15 06:15:30,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:15:30,656 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 28 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2022-04-15 06:15:30,656 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:15:30,656 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 30 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 28 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:30,752 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 57 edges. 57 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:15:30,752 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-04-15 06:15:30,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:15:30,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-04-15 06:15:30,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=1397, Unknown=0, NotChecked=0, Total=1640 [2022-04-15 06:15:30,753 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 30 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 28 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:33,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:15:33,897 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2022-04-15 06:15:33,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-04-15 06:15:33,897 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 28 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2022-04-15 06:15:33,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:15:33,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 28 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:33,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 73 transitions. [2022-04-15 06:15:33,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 28 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:33,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 73 transitions. [2022-04-15 06:15:33,899 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 27 states and 73 transitions. [2022-04-15 06:15:33,971 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 73 edges. 73 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:15:33,972 INFO L225 Difference]: With dead ends: 68 [2022-04-15 06:15:33,972 INFO L226 Difference]: Without dead ends: 61 [2022-04-15 06:15:33,972 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 42 SyntacticMatches, 4 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=465, Invalid=3695, Unknown=0, NotChecked=0, Total=4160 [2022-04-15 06:15:33,973 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 32 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-15 06:15:33,973 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 148 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1485 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-15 06:15:33,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-04-15 06:15:34,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-04-15 06:15:34,058 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:15:34,058 INFO L82 GeneralOperation]: Start isEquivalent. First operand 61 states. Second operand has 61 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 56 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:34,058 INFO L74 IsIncluded]: Start isIncluded. First operand 61 states. Second operand has 61 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 56 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:34,058 INFO L87 Difference]: Start difference. First operand 61 states. Second operand has 61 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 56 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:34,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:15:34,059 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2022-04-15 06:15:34,059 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2022-04-15 06:15:34,060 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:15:34,060 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:15:34,060 INFO L74 IsIncluded]: Start isIncluded. First operand has 61 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 56 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 61 states. [2022-04-15 06:15:34,060 INFO L87 Difference]: Start difference. First operand has 61 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 56 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 61 states. [2022-04-15 06:15:34,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:15:34,061 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2022-04-15 06:15:34,061 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2022-04-15 06:15:34,061 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:15:34,061 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:15:34,061 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:15:34,061 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:15:34,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 56 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:34,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2022-04-15 06:15:34,062 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 57 [2022-04-15 06:15:34,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:15:34,062 INFO L478 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2022-04-15 06:15:34,063 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 28 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:34,063 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 61 states and 63 transitions. [2022-04-15 06:15:34,115 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 63 edges. 63 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:15:34,115 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2022-04-15 06:15:34,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-04-15 06:15:34,116 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:15:34,116 INFO L499 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:15:34,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-04-15 06:15:34,316 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:15:34,316 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:15:34,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:15:34,316 INFO L85 PathProgramCache]: Analyzing trace with hash 820671712, now seen corresponding path program 23 times [2022-04-15 06:15:34,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:15:34,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2051589857] [2022-04-15 06:15:36,451 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:15:36,671 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:15:36,672 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:15:36,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1100892364, now seen corresponding path program 1 times [2022-04-15 06:15:36,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:15:36,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073572251] [2022-04-15 06:15:36,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:15:36,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:15:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:36,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:15:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:36,799 INFO L290 TraceCheckUtils]: 0: Hoare triple {9145#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {9134#true} is VALID [2022-04-15 06:15:36,799 INFO L290 TraceCheckUtils]: 1: Hoare triple {9134#true} assume true; {9134#true} is VALID [2022-04-15 06:15:36,799 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {9134#true} {9134#true} #56#return; {9134#true} is VALID [2022-04-15 06:15:36,800 INFO L272 TraceCheckUtils]: 0: Hoare triple {9134#true} call ULTIMATE.init(); {9145#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:15:36,800 INFO L290 TraceCheckUtils]: 1: Hoare triple {9145#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {9134#true} is VALID [2022-04-15 06:15:36,800 INFO L290 TraceCheckUtils]: 2: Hoare triple {9134#true} assume true; {9134#true} is VALID [2022-04-15 06:15:36,800 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {9134#true} {9134#true} #56#return; {9134#true} is VALID [2022-04-15 06:15:36,800 INFO L272 TraceCheckUtils]: 4: Hoare triple {9134#true} call #t~ret1 := main(); {9134#true} is VALID [2022-04-15 06:15:36,801 INFO L290 TraceCheckUtils]: 5: Hoare triple {9134#true} ~x~0 := 0;~y~0 := 50; {9139#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:15:36,801 INFO L290 TraceCheckUtils]: 6: Hoare triple {9139#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [150] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_665 v_main_~x~0_664))) (or .cse0 (and .cse0 (not (< v_main_~x~0_665 50))) (and (< v_main_~x~0_664 51) (< v_main_~x~0_665 v_main_~x~0_664)))) InVars {main_~x~0=v_main_~x~0_665} OutVars{main_~x~0=v_main_~x~0_664} AuxVars[] AssignedVars[main_~x~0] {9140#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:15:36,802 INFO L290 TraceCheckUtils]: 7: Hoare triple {9140#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [151] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {9140#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:15:36,803 INFO L290 TraceCheckUtils]: 8: Hoare triple {9140#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [152] L28-2-->L27-2_primed: Formula: (let ((.cse1 (<= 50 v_main_~x~0_667)) (.cse0 (= v_main_~y~0_458 v_main_~y~0_457)) (.cse2 (= v_main_~x~0_667 v_main_~x~0_666))) (or (and .cse0 (or (not .cse1) (not (< v_main_~x~0_667 100))) .cse2) (and (< v_main_~x~0_666 101) (< v_main_~x~0_667 v_main_~x~0_666) (= (+ v_main_~x~0_666 v_main_~y~0_458) (+ v_main_~x~0_667 v_main_~y~0_457)) .cse1) (and .cse0 .cse2))) InVars {main_~x~0=v_main_~x~0_667, main_~y~0=v_main_~y~0_458} OutVars{main_~x~0=v_main_~x~0_666, main_~y~0=v_main_~y~0_457} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {9141#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:15:36,803 INFO L290 TraceCheckUtils]: 9: Hoare triple {9141#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [149] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {9142#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:15:36,804 INFO L272 TraceCheckUtils]: 10: Hoare triple {9142#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {9143#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:15:36,804 INFO L290 TraceCheckUtils]: 11: Hoare triple {9143#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {9144#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:15:36,805 INFO L290 TraceCheckUtils]: 12: Hoare triple {9144#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {9135#false} is VALID [2022-04-15 06:15:36,805 INFO L290 TraceCheckUtils]: 13: Hoare triple {9135#false} assume !false; {9135#false} is VALID [2022-04-15 06:15:36,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:15:36,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:15:36,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073572251] [2022-04-15 06:15:36,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073572251] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:15:36,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991683318] [2022-04-15 06:15:36,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:15:36,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:15:36,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:15:36,807 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:15:36,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-04-15 06:15:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:36,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:15:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:36,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:15:37,108 INFO L272 TraceCheckUtils]: 0: Hoare triple {9134#true} call ULTIMATE.init(); {9134#true} is VALID [2022-04-15 06:15:37,109 INFO L290 TraceCheckUtils]: 1: Hoare triple {9134#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {9134#true} is VALID [2022-04-15 06:15:37,109 INFO L290 TraceCheckUtils]: 2: Hoare triple {9134#true} assume true; {9134#true} is VALID [2022-04-15 06:15:37,109 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {9134#true} {9134#true} #56#return; {9134#true} is VALID [2022-04-15 06:15:37,109 INFO L272 TraceCheckUtils]: 4: Hoare triple {9134#true} call #t~ret1 := main(); {9134#true} is VALID [2022-04-15 06:15:37,109 INFO L290 TraceCheckUtils]: 5: Hoare triple {9134#true} ~x~0 := 0;~y~0 := 50; {9164#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:15:37,110 INFO L290 TraceCheckUtils]: 6: Hoare triple {9164#(and (<= main_~x~0 0) (= main_~y~0 50))} [150] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_665 v_main_~x~0_664))) (or .cse0 (and .cse0 (not (< v_main_~x~0_665 50))) (and (< v_main_~x~0_664 51) (< v_main_~x~0_665 v_main_~x~0_664)))) InVars {main_~x~0=v_main_~x~0_665} OutVars{main_~x~0=v_main_~x~0_664} AuxVars[] AssignedVars[main_~x~0] {9168#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:15:37,110 INFO L290 TraceCheckUtils]: 7: Hoare triple {9168#(and (= main_~y~0 50) (< main_~x~0 51))} [151] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {9168#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:15:37,111 INFO L290 TraceCheckUtils]: 8: Hoare triple {9168#(and (= main_~y~0 50) (< main_~x~0 51))} [152] L28-2-->L27-2_primed: Formula: (let ((.cse1 (<= 50 v_main_~x~0_667)) (.cse0 (= v_main_~y~0_458 v_main_~y~0_457)) (.cse2 (= v_main_~x~0_667 v_main_~x~0_666))) (or (and .cse0 (or (not .cse1) (not (< v_main_~x~0_667 100))) .cse2) (and (< v_main_~x~0_666 101) (< v_main_~x~0_667 v_main_~x~0_666) (= (+ v_main_~x~0_666 v_main_~y~0_458) (+ v_main_~x~0_667 v_main_~y~0_457)) .cse1) (and .cse0 .cse2))) InVars {main_~x~0=v_main_~x~0_667, main_~y~0=v_main_~y~0_458} OutVars{main_~x~0=v_main_~x~0_666, main_~y~0=v_main_~y~0_457} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {9175#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:15:37,111 INFO L290 TraceCheckUtils]: 9: Hoare triple {9175#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [149] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {9142#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:15:37,112 INFO L272 TraceCheckUtils]: 10: Hoare triple {9142#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {9182#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:15:37,112 INFO L290 TraceCheckUtils]: 11: Hoare triple {9182#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {9186#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:15:37,112 INFO L290 TraceCheckUtils]: 12: Hoare triple {9186#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {9135#false} is VALID [2022-04-15 06:15:37,113 INFO L290 TraceCheckUtils]: 13: Hoare triple {9135#false} assume !false; {9135#false} is VALID [2022-04-15 06:15:37,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:15:37,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:15:37,551 INFO L290 TraceCheckUtils]: 13: Hoare triple {9135#false} assume !false; {9135#false} is VALID [2022-04-15 06:15:37,551 INFO L290 TraceCheckUtils]: 12: Hoare triple {9186#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {9135#false} is VALID [2022-04-15 06:15:37,552 INFO L290 TraceCheckUtils]: 11: Hoare triple {9182#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {9186#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:15:37,552 INFO L272 TraceCheckUtils]: 10: Hoare triple {9142#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {9182#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:15:37,553 INFO L290 TraceCheckUtils]: 9: Hoare triple {9205#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [149] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {9142#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:15:37,554 INFO L290 TraceCheckUtils]: 8: Hoare triple {9209#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [152] L28-2-->L27-2_primed: Formula: (let ((.cse1 (<= 50 v_main_~x~0_667)) (.cse0 (= v_main_~y~0_458 v_main_~y~0_457)) (.cse2 (= v_main_~x~0_667 v_main_~x~0_666))) (or (and .cse0 (or (not .cse1) (not (< v_main_~x~0_667 100))) .cse2) (and (< v_main_~x~0_666 101) (< v_main_~x~0_667 v_main_~x~0_666) (= (+ v_main_~x~0_666 v_main_~y~0_458) (+ v_main_~x~0_667 v_main_~y~0_457)) .cse1) (and .cse0 .cse2))) InVars {main_~x~0=v_main_~x~0_667, main_~y~0=v_main_~y~0_458} OutVars{main_~x~0=v_main_~x~0_666, main_~y~0=v_main_~y~0_457} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {9205#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:15:37,554 INFO L290 TraceCheckUtils]: 7: Hoare triple {9209#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [151] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {9209#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:15:37,555 INFO L290 TraceCheckUtils]: 6: Hoare triple {9216#(and (<= 50 main_~y~0) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [150] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_665 v_main_~x~0_664))) (or .cse0 (and .cse0 (not (< v_main_~x~0_665 50))) (and (< v_main_~x~0_664 51) (< v_main_~x~0_665 v_main_~x~0_664)))) InVars {main_~x~0=v_main_~x~0_665} OutVars{main_~x~0=v_main_~x~0_664} AuxVars[] AssignedVars[main_~x~0] {9209#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:15:37,555 INFO L290 TraceCheckUtils]: 5: Hoare triple {9134#true} ~x~0 := 0;~y~0 := 50; {9216#(and (<= 50 main_~y~0) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:15:37,556 INFO L272 TraceCheckUtils]: 4: Hoare triple {9134#true} call #t~ret1 := main(); {9134#true} is VALID [2022-04-15 06:15:37,556 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {9134#true} {9134#true} #56#return; {9134#true} is VALID [2022-04-15 06:15:37,556 INFO L290 TraceCheckUtils]: 2: Hoare triple {9134#true} assume true; {9134#true} is VALID [2022-04-15 06:15:37,556 INFO L290 TraceCheckUtils]: 1: Hoare triple {9134#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {9134#true} is VALID [2022-04-15 06:15:37,556 INFO L272 TraceCheckUtils]: 0: Hoare triple {9134#true} call ULTIMATE.init(); {9134#true} is VALID [2022-04-15 06:15:37,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:15:37,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991683318] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:15:37,556 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:15:37,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:15:38,622 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:15:38,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2051589857] [2022-04-15 06:15:38,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2051589857] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:15:38,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:15:38,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-04-15 06:15:38,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202716710] [2022-04-15 06:15:38,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:15:38,623 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 29 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2022-04-15 06:15:38,623 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:15:38,623 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 31 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 29 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:38,670 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 59 edges. 59 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:15:38,670 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-04-15 06:15:38,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:15:38,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-04-15 06:15:38,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1472, Unknown=0, NotChecked=0, Total=1722 [2022-04-15 06:15:38,672 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand has 31 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 29 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:41,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:15:41,704 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2022-04-15 06:15:41,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-04-15 06:15:41,704 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 29 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2022-04-15 06:15:41,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:15:41,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 29 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:41,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 75 transitions. [2022-04-15 06:15:41,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 29 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:41,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 75 transitions. [2022-04-15 06:15:41,709 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 28 states and 75 transitions. [2022-04-15 06:15:41,785 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 75 edges. 75 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:15:41,786 INFO L225 Difference]: With dead ends: 70 [2022-04-15 06:15:41,786 INFO L226 Difference]: Without dead ends: 63 [2022-04-15 06:15:41,787 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 984 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=481, Invalid=3941, Unknown=0, NotChecked=0, Total=4422 [2022-04-15 06:15:41,787 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 33 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 1596 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 1626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-15 06:15:41,788 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 153 Invalid, 1626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1596 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-15 06:15:41,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-04-15 06:15:41,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-04-15 06:15:41,899 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:15:41,899 INFO L82 GeneralOperation]: Start isEquivalent. First operand 63 states. Second operand has 63 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 58 states have internal predecessors, (61), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:41,899 INFO L74 IsIncluded]: Start isIncluded. First operand 63 states. Second operand has 63 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 58 states have internal predecessors, (61), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:41,899 INFO L87 Difference]: Start difference. First operand 63 states. Second operand has 63 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 58 states have internal predecessors, (61), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:41,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:15:41,901 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2022-04-15 06:15:41,901 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2022-04-15 06:15:41,901 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:15:41,901 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:15:41,901 INFO L74 IsIncluded]: Start isIncluded. First operand has 63 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 58 states have internal predecessors, (61), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 63 states. [2022-04-15 06:15:41,901 INFO L87 Difference]: Start difference. First operand has 63 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 58 states have internal predecessors, (61), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 63 states. [2022-04-15 06:15:41,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:15:41,902 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2022-04-15 06:15:41,902 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2022-04-15 06:15:41,902 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:15:41,902 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:15:41,902 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:15:41,902 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:15:41,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 58 states have internal predecessors, (61), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:41,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2022-04-15 06:15:41,904 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 59 [2022-04-15 06:15:41,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:15:41,904 INFO L478 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2022-04-15 06:15:41,904 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 29 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:41,904 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 63 states and 65 transitions. [2022-04-15 06:15:41,967 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 65 edges. 65 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:15:41,967 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2022-04-15 06:15:41,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-04-15 06:15:41,967 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:15:41,967 INFO L499 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:15:41,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-04-15 06:15:42,168 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:15:42,168 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:15:42,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:15:42,168 INFO L85 PathProgramCache]: Analyzing trace with hash -538794949, now seen corresponding path program 24 times [2022-04-15 06:15:42,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:15:42,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1461123396] [2022-04-15 06:15:46,234 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-15 06:15:46,286 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:15:46,516 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:15:46,517 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:15:46,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1144542772, now seen corresponding path program 1 times [2022-04-15 06:15:46,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:15:46,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106615942] [2022-04-15 06:15:46,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:15:46,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:15:46,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:46,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:15:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:46,608 INFO L290 TraceCheckUtils]: 0: Hoare triple {9715#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {9704#true} is VALID [2022-04-15 06:15:46,608 INFO L290 TraceCheckUtils]: 1: Hoare triple {9704#true} assume true; {9704#true} is VALID [2022-04-15 06:15:46,608 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {9704#true} {9704#true} #56#return; {9704#true} is VALID [2022-04-15 06:15:46,608 INFO L272 TraceCheckUtils]: 0: Hoare triple {9704#true} call ULTIMATE.init(); {9715#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:15:46,608 INFO L290 TraceCheckUtils]: 1: Hoare triple {9715#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {9704#true} is VALID [2022-04-15 06:15:46,608 INFO L290 TraceCheckUtils]: 2: Hoare triple {9704#true} assume true; {9704#true} is VALID [2022-04-15 06:15:46,608 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {9704#true} {9704#true} #56#return; {9704#true} is VALID [2022-04-15 06:15:46,608 INFO L272 TraceCheckUtils]: 4: Hoare triple {9704#true} call #t~ret1 := main(); {9704#true} is VALID [2022-04-15 06:15:46,609 INFO L290 TraceCheckUtils]: 5: Hoare triple {9704#true} ~x~0 := 0;~y~0 := 50; {9709#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:15:46,610 INFO L290 TraceCheckUtils]: 6: Hoare triple {9709#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [154] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_706 v_main_~x~0_705))) (or (and (< v_main_~x~0_706 v_main_~x~0_705) (< v_main_~x~0_705 51)) .cse0 (and .cse0 (<= 50 v_main_~x~0_706)))) InVars {main_~x~0=v_main_~x~0_706} OutVars{main_~x~0=v_main_~x~0_705} AuxVars[] AssignedVars[main_~x~0] {9710#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:15:46,610 INFO L290 TraceCheckUtils]: 7: Hoare triple {9710#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [155] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {9710#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:15:46,611 INFO L290 TraceCheckUtils]: 8: Hoare triple {9710#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [156] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_708 v_main_~x~0_707)) (.cse1 (<= 50 v_main_~x~0_708))) (or (and .cse0 (= v_main_~y~0_489 v_main_~y~0_490) (or (not .cse1) (not (< v_main_~x~0_708 100)))) (and .cse0 (= v_main_~y~0_490 v_main_~y~0_489)) (let ((.cse2 (+ v_main_~x~0_708 v_main_~y~0_489))) (and (< v_main_~y~0_490 v_main_~y~0_489) (= .cse2 (+ v_main_~x~0_707 v_main_~y~0_490)) (< .cse2 (+ 101 v_main_~y~0_490)) .cse1)))) InVars {main_~x~0=v_main_~x~0_708, main_~y~0=v_main_~y~0_490} OutVars{main_~x~0=v_main_~x~0_707, main_~y~0=v_main_~y~0_489} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {9711#(or (and (or (< 99 main_~y~0) (<= main_~x~0 main_~y~0)) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:15:46,611 INFO L290 TraceCheckUtils]: 9: Hoare triple {9711#(or (and (or (< 99 main_~y~0) (<= main_~x~0 main_~y~0)) (<= main_~y~0 100)) (<= main_~x~0 50))} [153] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {9712#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:15:46,612 INFO L272 TraceCheckUtils]: 10: Hoare triple {9712#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {9713#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:15:46,612 INFO L290 TraceCheckUtils]: 11: Hoare triple {9713#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {9714#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:15:46,612 INFO L290 TraceCheckUtils]: 12: Hoare triple {9714#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {9705#false} is VALID [2022-04-15 06:15:46,613 INFO L290 TraceCheckUtils]: 13: Hoare triple {9705#false} assume !false; {9705#false} is VALID [2022-04-15 06:15:46,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:15:46,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:15:46,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106615942] [2022-04-15 06:15:46,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106615942] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:15:46,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263177226] [2022-04-15 06:15:46,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:15:46,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:15:46,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:15:46,614 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:15:46,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-04-15 06:15:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:46,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:15:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:46,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:15:46,908 INFO L272 TraceCheckUtils]: 0: Hoare triple {9704#true} call ULTIMATE.init(); {9704#true} is VALID [2022-04-15 06:15:46,908 INFO L290 TraceCheckUtils]: 1: Hoare triple {9704#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {9704#true} is VALID [2022-04-15 06:15:46,908 INFO L290 TraceCheckUtils]: 2: Hoare triple {9704#true} assume true; {9704#true} is VALID [2022-04-15 06:15:46,909 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {9704#true} {9704#true} #56#return; {9704#true} is VALID [2022-04-15 06:15:46,909 INFO L272 TraceCheckUtils]: 4: Hoare triple {9704#true} call #t~ret1 := main(); {9704#true} is VALID [2022-04-15 06:15:46,909 INFO L290 TraceCheckUtils]: 5: Hoare triple {9704#true} ~x~0 := 0;~y~0 := 50; {9734#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:15:46,909 INFO L290 TraceCheckUtils]: 6: Hoare triple {9734#(and (<= main_~x~0 0) (= main_~y~0 50))} [154] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_706 v_main_~x~0_705))) (or (and (< v_main_~x~0_706 v_main_~x~0_705) (< v_main_~x~0_705 51)) .cse0 (and .cse0 (<= 50 v_main_~x~0_706)))) InVars {main_~x~0=v_main_~x~0_706} OutVars{main_~x~0=v_main_~x~0_705} AuxVars[] AssignedVars[main_~x~0] {9738#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:15:46,910 INFO L290 TraceCheckUtils]: 7: Hoare triple {9738#(and (= main_~y~0 50) (< main_~x~0 51))} [155] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {9738#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:15:46,911 INFO L290 TraceCheckUtils]: 8: Hoare triple {9738#(and (= main_~y~0 50) (< main_~x~0 51))} [156] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_708 v_main_~x~0_707)) (.cse1 (<= 50 v_main_~x~0_708))) (or (and .cse0 (= v_main_~y~0_489 v_main_~y~0_490) (or (not .cse1) (not (< v_main_~x~0_708 100)))) (and .cse0 (= v_main_~y~0_490 v_main_~y~0_489)) (let ((.cse2 (+ v_main_~x~0_708 v_main_~y~0_489))) (and (< v_main_~y~0_490 v_main_~y~0_489) (= .cse2 (+ v_main_~x~0_707 v_main_~y~0_490)) (< .cse2 (+ 101 v_main_~y~0_490)) .cse1)))) InVars {main_~x~0=v_main_~x~0_708, main_~y~0=v_main_~y~0_490} OutVars{main_~x~0=v_main_~x~0_707, main_~y~0=v_main_~y~0_489} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {9745#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:15:46,911 INFO L290 TraceCheckUtils]: 9: Hoare triple {9745#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [153] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {9712#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:15:46,912 INFO L272 TraceCheckUtils]: 10: Hoare triple {9712#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {9752#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:15:46,912 INFO L290 TraceCheckUtils]: 11: Hoare triple {9752#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {9756#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:15:46,912 INFO L290 TraceCheckUtils]: 12: Hoare triple {9756#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {9705#false} is VALID [2022-04-15 06:15:46,913 INFO L290 TraceCheckUtils]: 13: Hoare triple {9705#false} assume !false; {9705#false} is VALID [2022-04-15 06:15:46,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:15:46,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:15:47,437 INFO L290 TraceCheckUtils]: 13: Hoare triple {9705#false} assume !false; {9705#false} is VALID [2022-04-15 06:15:47,437 INFO L290 TraceCheckUtils]: 12: Hoare triple {9756#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {9705#false} is VALID [2022-04-15 06:15:47,438 INFO L290 TraceCheckUtils]: 11: Hoare triple {9752#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {9756#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:15:47,439 INFO L272 TraceCheckUtils]: 10: Hoare triple {9712#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {9752#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:15:47,439 INFO L290 TraceCheckUtils]: 9: Hoare triple {9775#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [153] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {9712#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:15:47,440 INFO L290 TraceCheckUtils]: 8: Hoare triple {9779#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [156] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_708 v_main_~x~0_707)) (.cse1 (<= 50 v_main_~x~0_708))) (or (and .cse0 (= v_main_~y~0_489 v_main_~y~0_490) (or (not .cse1) (not (< v_main_~x~0_708 100)))) (and .cse0 (= v_main_~y~0_490 v_main_~y~0_489)) (let ((.cse2 (+ v_main_~x~0_708 v_main_~y~0_489))) (and (< v_main_~y~0_490 v_main_~y~0_489) (= .cse2 (+ v_main_~x~0_707 v_main_~y~0_490)) (< .cse2 (+ 101 v_main_~y~0_490)) .cse1)))) InVars {main_~x~0=v_main_~x~0_708, main_~y~0=v_main_~y~0_490} OutVars{main_~x~0=v_main_~x~0_707, main_~y~0=v_main_~y~0_489} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {9775#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:15:47,441 INFO L290 TraceCheckUtils]: 7: Hoare triple {9779#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [155] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {9779#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:15:47,442 INFO L290 TraceCheckUtils]: 6: Hoare triple {9786#(and (<= 50 main_~y~0) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [154] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_706 v_main_~x~0_705))) (or (and (< v_main_~x~0_706 v_main_~x~0_705) (< v_main_~x~0_705 51)) .cse0 (and .cse0 (<= 50 v_main_~x~0_706)))) InVars {main_~x~0=v_main_~x~0_706} OutVars{main_~x~0=v_main_~x~0_705} AuxVars[] AssignedVars[main_~x~0] {9779#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:15:47,443 INFO L290 TraceCheckUtils]: 5: Hoare triple {9704#true} ~x~0 := 0;~y~0 := 50; {9786#(and (<= 50 main_~y~0) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:15:47,443 INFO L272 TraceCheckUtils]: 4: Hoare triple {9704#true} call #t~ret1 := main(); {9704#true} is VALID [2022-04-15 06:15:47,443 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {9704#true} {9704#true} #56#return; {9704#true} is VALID [2022-04-15 06:15:47,443 INFO L290 TraceCheckUtils]: 2: Hoare triple {9704#true} assume true; {9704#true} is VALID [2022-04-15 06:15:47,443 INFO L290 TraceCheckUtils]: 1: Hoare triple {9704#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {9704#true} is VALID [2022-04-15 06:15:47,443 INFO L272 TraceCheckUtils]: 0: Hoare triple {9704#true} call ULTIMATE.init(); {9704#true} is VALID [2022-04-15 06:15:47,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:15:47,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263177226] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:15:47,444 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:15:47,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:15:48,509 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:15:48,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1461123396] [2022-04-15 06:15:48,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1461123396] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:15:48,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:15:48,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-04-15 06:15:48,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065924723] [2022-04-15 06:15:48,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:15:48,510 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 30 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2022-04-15 06:15:48,510 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:15:48,510 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 32 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 30 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:48,556 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 61 edges. 61 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:15:48,556 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-04-15 06:15:48,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:15:48,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-04-15 06:15:48,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=1549, Unknown=0, NotChecked=0, Total=1806 [2022-04-15 06:15:48,557 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand has 32 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 30 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:51,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:15:51,851 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2022-04-15 06:15:51,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-04-15 06:15:51,851 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 30 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2022-04-15 06:15:51,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:15:51,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 30 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:51,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 77 transitions. [2022-04-15 06:15:51,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 30 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:51,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 77 transitions. [2022-04-15 06:15:51,853 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 29 states and 77 transitions. [2022-04-15 06:15:51,927 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 77 edges. 77 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:15:51,928 INFO L225 Difference]: With dead ends: 72 [2022-04-15 06:15:51,928 INFO L226 Difference]: Without dead ends: 65 [2022-04-15 06:15:51,929 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1033 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=497, Invalid=4195, Unknown=0, NotChecked=0, Total=4692 [2022-04-15 06:15:51,929 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 34 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 1711 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 1742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-15 06:15:51,930 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 158 Invalid, 1742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1711 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-15 06:15:51,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-04-15 06:15:52,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-04-15 06:15:52,047 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:15:52,047 INFO L82 GeneralOperation]: Start isEquivalent. First operand 65 states. Second operand has 65 states, 60 states have (on average 1.05) internal successors, (63), 60 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:52,047 INFO L74 IsIncluded]: Start isIncluded. First operand 65 states. Second operand has 65 states, 60 states have (on average 1.05) internal successors, (63), 60 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:52,047 INFO L87 Difference]: Start difference. First operand 65 states. Second operand has 65 states, 60 states have (on average 1.05) internal successors, (63), 60 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:52,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:15:52,048 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2022-04-15 06:15:52,048 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2022-04-15 06:15:52,048 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:15:52,049 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:15:52,049 INFO L74 IsIncluded]: Start isIncluded. First operand has 65 states, 60 states have (on average 1.05) internal successors, (63), 60 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 65 states. [2022-04-15 06:15:52,049 INFO L87 Difference]: Start difference. First operand has 65 states, 60 states have (on average 1.05) internal successors, (63), 60 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 65 states. [2022-04-15 06:15:52,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:15:52,050 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2022-04-15 06:15:52,050 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2022-04-15 06:15:52,050 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:15:52,050 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:15:52,050 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:15:52,050 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:15:52,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 60 states have (on average 1.05) internal successors, (63), 60 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:52,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2022-04-15 06:15:52,051 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 61 [2022-04-15 06:15:52,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:15:52,051 INFO L478 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2022-04-15 06:15:52,051 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 30 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:52,052 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 65 states and 67 transitions. [2022-04-15 06:15:52,115 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 67 edges. 67 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:15:52,116 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2022-04-15 06:15:52,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-15 06:15:52,116 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:15:52,116 INFO L499 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:15:52,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-04-15 06:15:52,317 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-04-15 06:15:52,317 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:15:52,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:15:52,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1316198186, now seen corresponding path program 25 times [2022-04-15 06:15:52,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:15:52,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [631675906] [2022-04-15 06:15:52,418 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:15:52,673 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:15:52,674 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:15:52,677 INFO L85 PathProgramCache]: Analyzing trace with hash 904989388, now seen corresponding path program 1 times [2022-04-15 06:15:52,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:15:52,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540490472] [2022-04-15 06:15:52,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:15:52,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:15:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:52,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:15:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:52,814 INFO L290 TraceCheckUtils]: 0: Hoare triple {10300#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {10289#true} is VALID [2022-04-15 06:15:52,814 INFO L290 TraceCheckUtils]: 1: Hoare triple {10289#true} assume true; {10289#true} is VALID [2022-04-15 06:15:52,814 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {10289#true} {10289#true} #56#return; {10289#true} is VALID [2022-04-15 06:15:52,815 INFO L272 TraceCheckUtils]: 0: Hoare triple {10289#true} call ULTIMATE.init(); {10300#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:15:52,815 INFO L290 TraceCheckUtils]: 1: Hoare triple {10300#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {10289#true} is VALID [2022-04-15 06:15:52,815 INFO L290 TraceCheckUtils]: 2: Hoare triple {10289#true} assume true; {10289#true} is VALID [2022-04-15 06:15:52,815 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {10289#true} {10289#true} #56#return; {10289#true} is VALID [2022-04-15 06:15:52,815 INFO L272 TraceCheckUtils]: 4: Hoare triple {10289#true} call #t~ret1 := main(); {10289#true} is VALID [2022-04-15 06:15:52,815 INFO L290 TraceCheckUtils]: 5: Hoare triple {10289#true} ~x~0 := 0;~y~0 := 50; {10294#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:15:52,816 INFO L290 TraceCheckUtils]: 6: Hoare triple {10294#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [158] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_748 v_main_~x~0_747))) (or (and (not (< v_main_~x~0_748 50)) .cse0) (and (< v_main_~x~0_748 v_main_~x~0_747) (< v_main_~x~0_747 51)) .cse0)) InVars {main_~x~0=v_main_~x~0_748} OutVars{main_~x~0=v_main_~x~0_747} AuxVars[] AssignedVars[main_~x~0] {10295#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:15:52,817 INFO L290 TraceCheckUtils]: 7: Hoare triple {10295#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [159] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {10295#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:15:52,818 INFO L290 TraceCheckUtils]: 8: Hoare triple {10295#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [160] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_523 v_main_~y~0_522)) (.cse1 (<= 50 v_main_~x~0_750))) (or (and .cse0 (= v_main_~x~0_750 v_main_~x~0_749)) (and (< v_main_~x~0_749 101) (< v_main_~x~0_750 v_main_~x~0_749) (= (+ v_main_~x~0_749 v_main_~y~0_523) (+ v_main_~x~0_750 v_main_~y~0_522)) .cse1) (and .cse0 (or (not (< v_main_~x~0_750 100)) (not .cse1)) (= v_main_~x~0_749 v_main_~x~0_750)))) InVars {main_~x~0=v_main_~x~0_750, main_~y~0=v_main_~y~0_523} OutVars{main_~x~0=v_main_~x~0_749, main_~y~0=v_main_~y~0_522} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {10296#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:15:52,818 INFO L290 TraceCheckUtils]: 9: Hoare triple {10296#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [157] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {10297#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:15:52,819 INFO L272 TraceCheckUtils]: 10: Hoare triple {10297#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {10298#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:15:52,819 INFO L290 TraceCheckUtils]: 11: Hoare triple {10298#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {10299#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:15:52,819 INFO L290 TraceCheckUtils]: 12: Hoare triple {10299#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {10290#false} is VALID [2022-04-15 06:15:52,820 INFO L290 TraceCheckUtils]: 13: Hoare triple {10290#false} assume !false; {10290#false} is VALID [2022-04-15 06:15:52,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:15:52,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:15:52,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540490472] [2022-04-15 06:15:52,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540490472] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:15:52,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323884650] [2022-04-15 06:15:52,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:15:52,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:15:52,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:15:52,822 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:15:52,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-04-15 06:15:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:52,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:15:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:52,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:15:53,201 INFO L272 TraceCheckUtils]: 0: Hoare triple {10289#true} call ULTIMATE.init(); {10289#true} is VALID [2022-04-15 06:15:53,202 INFO L290 TraceCheckUtils]: 1: Hoare triple {10289#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {10289#true} is VALID [2022-04-15 06:15:53,202 INFO L290 TraceCheckUtils]: 2: Hoare triple {10289#true} assume true; {10289#true} is VALID [2022-04-15 06:15:53,202 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {10289#true} {10289#true} #56#return; {10289#true} is VALID [2022-04-15 06:15:53,202 INFO L272 TraceCheckUtils]: 4: Hoare triple {10289#true} call #t~ret1 := main(); {10289#true} is VALID [2022-04-15 06:15:53,202 INFO L290 TraceCheckUtils]: 5: Hoare triple {10289#true} ~x~0 := 0;~y~0 := 50; {10319#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:15:53,203 INFO L290 TraceCheckUtils]: 6: Hoare triple {10319#(and (<= main_~x~0 0) (= main_~y~0 50))} [158] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_748 v_main_~x~0_747))) (or (and (not (< v_main_~x~0_748 50)) .cse0) (and (< v_main_~x~0_748 v_main_~x~0_747) (< v_main_~x~0_747 51)) .cse0)) InVars {main_~x~0=v_main_~x~0_748} OutVars{main_~x~0=v_main_~x~0_747} AuxVars[] AssignedVars[main_~x~0] {10323#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:15:53,204 INFO L290 TraceCheckUtils]: 7: Hoare triple {10323#(and (= main_~y~0 50) (< main_~x~0 51))} [159] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {10323#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:15:53,205 INFO L290 TraceCheckUtils]: 8: Hoare triple {10323#(and (= main_~y~0 50) (< main_~x~0 51))} [160] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_523 v_main_~y~0_522)) (.cse1 (<= 50 v_main_~x~0_750))) (or (and .cse0 (= v_main_~x~0_750 v_main_~x~0_749)) (and (< v_main_~x~0_749 101) (< v_main_~x~0_750 v_main_~x~0_749) (= (+ v_main_~x~0_749 v_main_~y~0_523) (+ v_main_~x~0_750 v_main_~y~0_522)) .cse1) (and .cse0 (or (not (< v_main_~x~0_750 100)) (not .cse1)) (= v_main_~x~0_749 v_main_~x~0_750)))) InVars {main_~x~0=v_main_~x~0_750, main_~y~0=v_main_~y~0_523} OutVars{main_~x~0=v_main_~x~0_749, main_~y~0=v_main_~y~0_522} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {10330#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:15:53,205 INFO L290 TraceCheckUtils]: 9: Hoare triple {10330#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [157] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {10297#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:15:53,206 INFO L272 TraceCheckUtils]: 10: Hoare triple {10297#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {10337#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:15:53,206 INFO L290 TraceCheckUtils]: 11: Hoare triple {10337#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {10341#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:15:53,207 INFO L290 TraceCheckUtils]: 12: Hoare triple {10341#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {10290#false} is VALID [2022-04-15 06:15:53,207 INFO L290 TraceCheckUtils]: 13: Hoare triple {10290#false} assume !false; {10290#false} is VALID [2022-04-15 06:15:53,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:15:53,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:15:53,706 INFO L290 TraceCheckUtils]: 13: Hoare triple {10290#false} assume !false; {10290#false} is VALID [2022-04-15 06:15:53,706 INFO L290 TraceCheckUtils]: 12: Hoare triple {10341#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {10290#false} is VALID [2022-04-15 06:15:53,707 INFO L290 TraceCheckUtils]: 11: Hoare triple {10337#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {10341#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:15:53,707 INFO L272 TraceCheckUtils]: 10: Hoare triple {10297#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {10337#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:15:53,708 INFO L290 TraceCheckUtils]: 9: Hoare triple {10360#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [157] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {10297#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:15:53,709 INFO L290 TraceCheckUtils]: 8: Hoare triple {10364#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [160] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_523 v_main_~y~0_522)) (.cse1 (<= 50 v_main_~x~0_750))) (or (and .cse0 (= v_main_~x~0_750 v_main_~x~0_749)) (and (< v_main_~x~0_749 101) (< v_main_~x~0_750 v_main_~x~0_749) (= (+ v_main_~x~0_749 v_main_~y~0_523) (+ v_main_~x~0_750 v_main_~y~0_522)) .cse1) (and .cse0 (or (not (< v_main_~x~0_750 100)) (not .cse1)) (= v_main_~x~0_749 v_main_~x~0_750)))) InVars {main_~x~0=v_main_~x~0_750, main_~y~0=v_main_~y~0_523} OutVars{main_~x~0=v_main_~x~0_749, main_~y~0=v_main_~y~0_522} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {10360#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:15:53,710 INFO L290 TraceCheckUtils]: 7: Hoare triple {10364#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [159] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {10364#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:15:53,711 INFO L290 TraceCheckUtils]: 6: Hoare triple {10371#(and (<= 50 main_~y~0) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [158] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_748 v_main_~x~0_747))) (or (and (not (< v_main_~x~0_748 50)) .cse0) (and (< v_main_~x~0_748 v_main_~x~0_747) (< v_main_~x~0_747 51)) .cse0)) InVars {main_~x~0=v_main_~x~0_748} OutVars{main_~x~0=v_main_~x~0_747} AuxVars[] AssignedVars[main_~x~0] {10364#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:15:53,711 INFO L290 TraceCheckUtils]: 5: Hoare triple {10289#true} ~x~0 := 0;~y~0 := 50; {10371#(and (<= 50 main_~y~0) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:15:53,711 INFO L272 TraceCheckUtils]: 4: Hoare triple {10289#true} call #t~ret1 := main(); {10289#true} is VALID [2022-04-15 06:15:53,711 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {10289#true} {10289#true} #56#return; {10289#true} is VALID [2022-04-15 06:15:53,711 INFO L290 TraceCheckUtils]: 2: Hoare triple {10289#true} assume true; {10289#true} is VALID [2022-04-15 06:15:53,712 INFO L290 TraceCheckUtils]: 1: Hoare triple {10289#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {10289#true} is VALID [2022-04-15 06:15:53,712 INFO L272 TraceCheckUtils]: 0: Hoare triple {10289#true} call ULTIMATE.init(); {10289#true} is VALID [2022-04-15 06:15:53,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:15:53,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323884650] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:15:53,712 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:15:53,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:15:54,835 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:15:54,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [631675906] [2022-04-15 06:15:54,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [631675906] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:15:54,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:15:54,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-04-15 06:15:54,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435386027] [2022-04-15 06:15:54,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:15:54,836 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.84375) internal successors, (59), 31 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2022-04-15 06:15:54,836 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:15:54,836 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 33 states, 32 states have (on average 1.84375) internal successors, (59), 31 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:54,885 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 63 edges. 63 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:15:54,886 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-04-15 06:15:54,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:15:54,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-04-15 06:15:54,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1628, Unknown=0, NotChecked=0, Total=1892 [2022-04-15 06:15:54,886 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand has 33 states, 32 states have (on average 1.84375) internal successors, (59), 31 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:58,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:15:58,330 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2022-04-15 06:15:58,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-04-15 06:15:58,331 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.84375) internal successors, (59), 31 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2022-04-15 06:15:58,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:15:58,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.84375) internal successors, (59), 31 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:58,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 79 transitions. [2022-04-15 06:15:58,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.84375) internal successors, (59), 31 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:58,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 79 transitions. [2022-04-15 06:15:58,333 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 30 states and 79 transitions. [2022-04-15 06:15:58,421 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 79 edges. 79 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:15:58,422 INFO L225 Difference]: With dead ends: 74 [2022-04-15 06:15:58,422 INFO L226 Difference]: Without dead ends: 67 [2022-04-15 06:15:58,423 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1083 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=513, Invalid=4457, Unknown=0, NotChecked=0, Total=4970 [2022-04-15 06:15:58,423 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 35 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 1830 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 1862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-15 06:15:58,424 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 163 Invalid, 1862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1830 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-15 06:15:58,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-04-15 06:15:58,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-04-15 06:15:58,534 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:15:58,535 INFO L82 GeneralOperation]: Start isEquivalent. First operand 67 states. Second operand has 67 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 62 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:58,535 INFO L74 IsIncluded]: Start isIncluded. First operand 67 states. Second operand has 67 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 62 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:58,535 INFO L87 Difference]: Start difference. First operand 67 states. Second operand has 67 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 62 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:58,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:15:58,536 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2022-04-15 06:15:58,538 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2022-04-15 06:15:58,538 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:15:58,538 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:15:58,538 INFO L74 IsIncluded]: Start isIncluded. First operand has 67 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 62 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 67 states. [2022-04-15 06:15:58,538 INFO L87 Difference]: Start difference. First operand has 67 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 62 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 67 states. [2022-04-15 06:15:58,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:15:58,539 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2022-04-15 06:15:58,539 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2022-04-15 06:15:58,539 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:15:58,540 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:15:58,540 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:15:58,540 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:15:58,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 62 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:58,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2022-04-15 06:15:58,541 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 63 [2022-04-15 06:15:58,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:15:58,541 INFO L478 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2022-04-15 06:15:58,541 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.84375) internal successors, (59), 31 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:15:58,541 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 67 states and 69 transitions. [2022-04-15 06:15:58,603 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 69 edges. 69 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:15:58,603 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2022-04-15 06:15:58,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-04-15 06:15:58,603 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:15:58,603 INFO L499 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:15:58,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-04-15 06:15:58,819 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-04-15 06:15:58,819 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:15:58,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:15:58,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1076399439, now seen corresponding path program 26 times [2022-04-15 06:15:58,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:15:58,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [33073855] [2022-04-15 06:15:58,911 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:15:59,170 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:15:59,171 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:15:59,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1340445748, now seen corresponding path program 1 times [2022-04-15 06:15:59,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:15:59,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358268244] [2022-04-15 06:15:59,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:15:59,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:15:59,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:59,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:15:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:59,265 INFO L290 TraceCheckUtils]: 0: Hoare triple {10900#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {10889#true} is VALID [2022-04-15 06:15:59,265 INFO L290 TraceCheckUtils]: 1: Hoare triple {10889#true} assume true; {10889#true} is VALID [2022-04-15 06:15:59,265 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {10889#true} {10889#true} #56#return; {10889#true} is VALID [2022-04-15 06:15:59,265 INFO L272 TraceCheckUtils]: 0: Hoare triple {10889#true} call ULTIMATE.init(); {10900#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:15:59,265 INFO L290 TraceCheckUtils]: 1: Hoare triple {10900#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {10889#true} is VALID [2022-04-15 06:15:59,265 INFO L290 TraceCheckUtils]: 2: Hoare triple {10889#true} assume true; {10889#true} is VALID [2022-04-15 06:15:59,266 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {10889#true} {10889#true} #56#return; {10889#true} is VALID [2022-04-15 06:15:59,266 INFO L272 TraceCheckUtils]: 4: Hoare triple {10889#true} call #t~ret1 := main(); {10889#true} is VALID [2022-04-15 06:15:59,266 INFO L290 TraceCheckUtils]: 5: Hoare triple {10889#true} ~x~0 := 0;~y~0 := 50; {10894#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:15:59,267 INFO L290 TraceCheckUtils]: 6: Hoare triple {10894#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [162] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_791 v_main_~x~0_790))) (or (and (not (< v_main_~x~0_791 50)) .cse0) (and (< v_main_~x~0_791 v_main_~x~0_790) (< v_main_~x~0_790 51)) .cse0)) InVars {main_~x~0=v_main_~x~0_791} OutVars{main_~x~0=v_main_~x~0_790} AuxVars[] AssignedVars[main_~x~0] {10895#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:15:59,267 INFO L290 TraceCheckUtils]: 7: Hoare triple {10895#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [163] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {10895#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:15:59,268 INFO L290 TraceCheckUtils]: 8: Hoare triple {10895#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [164] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_793 v_main_~x~0_792)) (.cse1 (= v_main_~y~0_557 v_main_~y~0_556)) (.cse2 (<= 50 v_main_~x~0_793))) (or (and .cse0 .cse1) (and (< v_main_~x~0_793 v_main_~x~0_792) .cse2 (< v_main_~x~0_792 101) (= (+ v_main_~x~0_792 v_main_~y~0_557) (+ v_main_~x~0_793 v_main_~y~0_556))) (and .cse0 .cse1 (or (not (< v_main_~x~0_793 100)) (not .cse2))))) InVars {main_~x~0=v_main_~x~0_793, main_~y~0=v_main_~y~0_557} OutVars{main_~x~0=v_main_~x~0_792, main_~y~0=v_main_~y~0_556} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {10896#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:15:59,268 INFO L290 TraceCheckUtils]: 9: Hoare triple {10896#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [161] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {10897#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:15:59,269 INFO L272 TraceCheckUtils]: 10: Hoare triple {10897#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {10898#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:15:59,269 INFO L290 TraceCheckUtils]: 11: Hoare triple {10898#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {10899#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:15:59,269 INFO L290 TraceCheckUtils]: 12: Hoare triple {10899#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {10890#false} is VALID [2022-04-15 06:15:59,270 INFO L290 TraceCheckUtils]: 13: Hoare triple {10890#false} assume !false; {10890#false} is VALID [2022-04-15 06:15:59,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:15:59,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:15:59,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358268244] [2022-04-15 06:15:59,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358268244] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:15:59,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137483065] [2022-04-15 06:15:59,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:15:59,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:15:59,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:15:59,271 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:15:59,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-04-15 06:15:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:59,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:15:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:15:59,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:15:59,595 INFO L272 TraceCheckUtils]: 0: Hoare triple {10889#true} call ULTIMATE.init(); {10889#true} is VALID [2022-04-15 06:15:59,595 INFO L290 TraceCheckUtils]: 1: Hoare triple {10889#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {10889#true} is VALID [2022-04-15 06:15:59,595 INFO L290 TraceCheckUtils]: 2: Hoare triple {10889#true} assume true; {10889#true} is VALID [2022-04-15 06:15:59,596 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {10889#true} {10889#true} #56#return; {10889#true} is VALID [2022-04-15 06:15:59,596 INFO L272 TraceCheckUtils]: 4: Hoare triple {10889#true} call #t~ret1 := main(); {10889#true} is VALID [2022-04-15 06:15:59,596 INFO L290 TraceCheckUtils]: 5: Hoare triple {10889#true} ~x~0 := 0;~y~0 := 50; {10919#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:15:59,596 INFO L290 TraceCheckUtils]: 6: Hoare triple {10919#(and (<= main_~x~0 0) (= main_~y~0 50))} [162] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_791 v_main_~x~0_790))) (or (and (not (< v_main_~x~0_791 50)) .cse0) (and (< v_main_~x~0_791 v_main_~x~0_790) (< v_main_~x~0_790 51)) .cse0)) InVars {main_~x~0=v_main_~x~0_791} OutVars{main_~x~0=v_main_~x~0_790} AuxVars[] AssignedVars[main_~x~0] {10923#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:15:59,597 INFO L290 TraceCheckUtils]: 7: Hoare triple {10923#(and (= main_~y~0 50) (< main_~x~0 51))} [163] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {10923#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:15:59,598 INFO L290 TraceCheckUtils]: 8: Hoare triple {10923#(and (= main_~y~0 50) (< main_~x~0 51))} [164] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_793 v_main_~x~0_792)) (.cse1 (= v_main_~y~0_557 v_main_~y~0_556)) (.cse2 (<= 50 v_main_~x~0_793))) (or (and .cse0 .cse1) (and (< v_main_~x~0_793 v_main_~x~0_792) .cse2 (< v_main_~x~0_792 101) (= (+ v_main_~x~0_792 v_main_~y~0_557) (+ v_main_~x~0_793 v_main_~y~0_556))) (and .cse0 .cse1 (or (not (< v_main_~x~0_793 100)) (not .cse2))))) InVars {main_~x~0=v_main_~x~0_793, main_~y~0=v_main_~y~0_557} OutVars{main_~x~0=v_main_~x~0_792, main_~y~0=v_main_~y~0_556} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {10930#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:15:59,598 INFO L290 TraceCheckUtils]: 9: Hoare triple {10930#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [161] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {10897#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:15:59,599 INFO L272 TraceCheckUtils]: 10: Hoare triple {10897#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {10937#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:15:59,599 INFO L290 TraceCheckUtils]: 11: Hoare triple {10937#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {10941#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:15:59,599 INFO L290 TraceCheckUtils]: 12: Hoare triple {10941#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {10890#false} is VALID [2022-04-15 06:15:59,600 INFO L290 TraceCheckUtils]: 13: Hoare triple {10890#false} assume !false; {10890#false} is VALID [2022-04-15 06:15:59,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:15:59,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:16:00,027 INFO L290 TraceCheckUtils]: 13: Hoare triple {10890#false} assume !false; {10890#false} is VALID [2022-04-15 06:16:00,028 INFO L290 TraceCheckUtils]: 12: Hoare triple {10941#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {10890#false} is VALID [2022-04-15 06:16:00,028 INFO L290 TraceCheckUtils]: 11: Hoare triple {10937#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {10941#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:16:00,029 INFO L272 TraceCheckUtils]: 10: Hoare triple {10897#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {10937#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:16:00,029 INFO L290 TraceCheckUtils]: 9: Hoare triple {10960#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [161] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {10897#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:16:00,030 INFO L290 TraceCheckUtils]: 8: Hoare triple {10964#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [164] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_793 v_main_~x~0_792)) (.cse1 (= v_main_~y~0_557 v_main_~y~0_556)) (.cse2 (<= 50 v_main_~x~0_793))) (or (and .cse0 .cse1) (and (< v_main_~x~0_793 v_main_~x~0_792) .cse2 (< v_main_~x~0_792 101) (= (+ v_main_~x~0_792 v_main_~y~0_557) (+ v_main_~x~0_793 v_main_~y~0_556))) (and .cse0 .cse1 (or (not (< v_main_~x~0_793 100)) (not .cse2))))) InVars {main_~x~0=v_main_~x~0_793, main_~y~0=v_main_~y~0_557} OutVars{main_~x~0=v_main_~x~0_792, main_~y~0=v_main_~y~0_556} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {10960#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:16:00,031 INFO L290 TraceCheckUtils]: 7: Hoare triple {10964#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [163] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {10964#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:16:00,032 INFO L290 TraceCheckUtils]: 6: Hoare triple {10971#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= 50 main_~y~0) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [162] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_791 v_main_~x~0_790))) (or (and (not (< v_main_~x~0_791 50)) .cse0) (and (< v_main_~x~0_791 v_main_~x~0_790) (< v_main_~x~0_790 51)) .cse0)) InVars {main_~x~0=v_main_~x~0_791} OutVars{main_~x~0=v_main_~x~0_790} AuxVars[] AssignedVars[main_~x~0] {10964#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:16:00,032 INFO L290 TraceCheckUtils]: 5: Hoare triple {10889#true} ~x~0 := 0;~y~0 := 50; {10971#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= 50 main_~y~0) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:16:00,032 INFO L272 TraceCheckUtils]: 4: Hoare triple {10889#true} call #t~ret1 := main(); {10889#true} is VALID [2022-04-15 06:16:00,032 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {10889#true} {10889#true} #56#return; {10889#true} is VALID [2022-04-15 06:16:00,032 INFO L290 TraceCheckUtils]: 2: Hoare triple {10889#true} assume true; {10889#true} is VALID [2022-04-15 06:16:00,032 INFO L290 TraceCheckUtils]: 1: Hoare triple {10889#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {10889#true} is VALID [2022-04-15 06:16:00,032 INFO L272 TraceCheckUtils]: 0: Hoare triple {10889#true} call ULTIMATE.init(); {10889#true} is VALID [2022-04-15 06:16:00,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:16:00,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137483065] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:16:00,033 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:16:00,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:16:01,137 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:16:01,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [33073855] [2022-04-15 06:16:01,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [33073855] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:16:01,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:16:01,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-04-15 06:16:01,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528630336] [2022-04-15 06:16:01,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:16:01,138 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 32 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2022-04-15 06:16:01,138 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:16:01,138 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 34 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 32 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:01,186 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 65 edges. 65 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:16:01,187 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-04-15 06:16:01,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:16:01,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-04-15 06:16:01,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=1709, Unknown=0, NotChecked=0, Total=1980 [2022-04-15 06:16:01,188 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand has 34 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 32 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:04,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:16:04,834 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2022-04-15 06:16:04,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-04-15 06:16:04,834 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 32 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2022-04-15 06:16:04,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:16:04,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 32 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:04,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 81 transitions. [2022-04-15 06:16:04,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 32 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:04,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 81 transitions. [2022-04-15 06:16:04,836 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 31 states and 81 transitions. [2022-04-15 06:16:04,916 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 81 edges. 81 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:16:04,916 INFO L225 Difference]: With dead ends: 76 [2022-04-15 06:16:04,916 INFO L226 Difference]: Without dead ends: 69 [2022-04-15 06:16:04,917 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1134 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=529, Invalid=4727, Unknown=0, NotChecked=0, Total=5256 [2022-04-15 06:16:04,917 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 36 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 1953 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-15 06:16:04,918 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 168 Invalid, 1986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1953 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-15 06:16:04,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-04-15 06:16:05,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-04-15 06:16:05,020 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:16:05,020 INFO L82 GeneralOperation]: Start isEquivalent. First operand 69 states. Second operand has 69 states, 64 states have (on average 1.046875) internal successors, (67), 64 states have internal predecessors, (67), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:05,021 INFO L74 IsIncluded]: Start isIncluded. First operand 69 states. Second operand has 69 states, 64 states have (on average 1.046875) internal successors, (67), 64 states have internal predecessors, (67), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:05,021 INFO L87 Difference]: Start difference. First operand 69 states. Second operand has 69 states, 64 states have (on average 1.046875) internal successors, (67), 64 states have internal predecessors, (67), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:05,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:16:05,021 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2022-04-15 06:16:05,022 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2022-04-15 06:16:05,022 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:16:05,022 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:16:05,023 INFO L74 IsIncluded]: Start isIncluded. First operand has 69 states, 64 states have (on average 1.046875) internal successors, (67), 64 states have internal predecessors, (67), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 69 states. [2022-04-15 06:16:05,023 INFO L87 Difference]: Start difference. First operand has 69 states, 64 states have (on average 1.046875) internal successors, (67), 64 states have internal predecessors, (67), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 69 states. [2022-04-15 06:16:05,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:16:05,024 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2022-04-15 06:16:05,024 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2022-04-15 06:16:05,025 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:16:05,025 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:16:05,025 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:16:05,025 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:16:05,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 64 states have (on average 1.046875) internal successors, (67), 64 states have internal predecessors, (67), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:05,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2022-04-15 06:16:05,026 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 65 [2022-04-15 06:16:05,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:16:05,026 INFO L478 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2022-04-15 06:16:05,026 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 32 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:05,026 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 69 states and 71 transitions. [2022-04-15 06:16:05,082 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 71 edges. 71 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:16:05,082 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2022-04-15 06:16:05,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-04-15 06:16:05,083 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:16:05,083 INFO L499 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:16:05,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-04-15 06:16:05,283 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-04-15 06:16:05,283 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:16:05,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:16:05,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1736929740, now seen corresponding path program 27 times [2022-04-15 06:16:05,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:16:05,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1479690638] [2022-04-15 06:16:09,349 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-15 06:16:09,399 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:16:09,594 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:16:09,596 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:16:09,598 INFO L85 PathProgramCache]: Analyzing trace with hash 709086412, now seen corresponding path program 1 times [2022-04-15 06:16:09,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:16:09,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160489047] [2022-04-15 06:16:09,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:16:09,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:16:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:16:09,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:16:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:16:09,690 INFO L290 TraceCheckUtils]: 0: Hoare triple {11515#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {11504#true} is VALID [2022-04-15 06:16:09,691 INFO L290 TraceCheckUtils]: 1: Hoare triple {11504#true} assume true; {11504#true} is VALID [2022-04-15 06:16:09,691 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {11504#true} {11504#true} #56#return; {11504#true} is VALID [2022-04-15 06:16:09,691 INFO L272 TraceCheckUtils]: 0: Hoare triple {11504#true} call ULTIMATE.init(); {11515#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:16:09,691 INFO L290 TraceCheckUtils]: 1: Hoare triple {11515#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {11504#true} is VALID [2022-04-15 06:16:09,691 INFO L290 TraceCheckUtils]: 2: Hoare triple {11504#true} assume true; {11504#true} is VALID [2022-04-15 06:16:09,691 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {11504#true} {11504#true} #56#return; {11504#true} is VALID [2022-04-15 06:16:09,691 INFO L272 TraceCheckUtils]: 4: Hoare triple {11504#true} call #t~ret1 := main(); {11504#true} is VALID [2022-04-15 06:16:09,692 INFO L290 TraceCheckUtils]: 5: Hoare triple {11504#true} ~x~0 := 0;~y~0 := 50; {11509#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:16:09,692 INFO L290 TraceCheckUtils]: 6: Hoare triple {11509#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [166] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_835 v_main_~x~0_834))) (or .cse0 (and (< v_main_~x~0_835 v_main_~x~0_834) (< v_main_~x~0_834 51)) (and .cse0 (<= 50 v_main_~x~0_835)))) InVars {main_~x~0=v_main_~x~0_835} OutVars{main_~x~0=v_main_~x~0_834} AuxVars[] AssignedVars[main_~x~0] {11510#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:16:09,693 INFO L290 TraceCheckUtils]: 7: Hoare triple {11510#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [167] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {11510#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:16:09,694 INFO L290 TraceCheckUtils]: 8: Hoare triple {11510#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [168] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_592 v_main_~y~0_591)) (.cse1 (= v_main_~x~0_837 v_main_~x~0_836)) (.cse2 (<= 50 v_main_~x~0_837))) (or (and .cse0 .cse1 (or (not (< v_main_~x~0_837 100)) (not .cse2))) (and .cse0 .cse1) (and (< v_main_~x~0_837 v_main_~x~0_836) (< v_main_~x~0_836 101) (= (+ v_main_~x~0_837 v_main_~y~0_591) (+ v_main_~x~0_836 v_main_~y~0_592)) .cse2))) InVars {main_~x~0=v_main_~x~0_837, main_~y~0=v_main_~y~0_592} OutVars{main_~x~0=v_main_~x~0_836, main_~y~0=v_main_~y~0_591} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {11511#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:16:09,694 INFO L290 TraceCheckUtils]: 9: Hoare triple {11511#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [165] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {11512#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:16:09,695 INFO L272 TraceCheckUtils]: 10: Hoare triple {11512#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {11513#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:16:09,695 INFO L290 TraceCheckUtils]: 11: Hoare triple {11513#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {11514#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:16:09,695 INFO L290 TraceCheckUtils]: 12: Hoare triple {11514#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {11505#false} is VALID [2022-04-15 06:16:09,695 INFO L290 TraceCheckUtils]: 13: Hoare triple {11505#false} assume !false; {11505#false} is VALID [2022-04-15 06:16:09,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:16:09,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:16:09,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160489047] [2022-04-15 06:16:09,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160489047] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:16:09,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066461862] [2022-04-15 06:16:09,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:16:09,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:16:09,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:16:09,697 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:16:09,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-04-15 06:16:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:16:09,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:16:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:16:09,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:16:09,996 INFO L272 TraceCheckUtils]: 0: Hoare triple {11504#true} call ULTIMATE.init(); {11504#true} is VALID [2022-04-15 06:16:09,997 INFO L290 TraceCheckUtils]: 1: Hoare triple {11504#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {11504#true} is VALID [2022-04-15 06:16:09,997 INFO L290 TraceCheckUtils]: 2: Hoare triple {11504#true} assume true; {11504#true} is VALID [2022-04-15 06:16:09,997 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {11504#true} {11504#true} #56#return; {11504#true} is VALID [2022-04-15 06:16:09,997 INFO L272 TraceCheckUtils]: 4: Hoare triple {11504#true} call #t~ret1 := main(); {11504#true} is VALID [2022-04-15 06:16:09,997 INFO L290 TraceCheckUtils]: 5: Hoare triple {11504#true} ~x~0 := 0;~y~0 := 50; {11534#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:16:09,998 INFO L290 TraceCheckUtils]: 6: Hoare triple {11534#(and (<= main_~x~0 0) (= main_~y~0 50))} [166] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_835 v_main_~x~0_834))) (or .cse0 (and (< v_main_~x~0_835 v_main_~x~0_834) (< v_main_~x~0_834 51)) (and .cse0 (<= 50 v_main_~x~0_835)))) InVars {main_~x~0=v_main_~x~0_835} OutVars{main_~x~0=v_main_~x~0_834} AuxVars[] AssignedVars[main_~x~0] {11538#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:16:09,998 INFO L290 TraceCheckUtils]: 7: Hoare triple {11538#(and (= main_~y~0 50) (< main_~x~0 51))} [167] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {11538#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:16:09,999 INFO L290 TraceCheckUtils]: 8: Hoare triple {11538#(and (= main_~y~0 50) (< main_~x~0 51))} [168] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_592 v_main_~y~0_591)) (.cse1 (= v_main_~x~0_837 v_main_~x~0_836)) (.cse2 (<= 50 v_main_~x~0_837))) (or (and .cse0 .cse1 (or (not (< v_main_~x~0_837 100)) (not .cse2))) (and .cse0 .cse1) (and (< v_main_~x~0_837 v_main_~x~0_836) (< v_main_~x~0_836 101) (= (+ v_main_~x~0_837 v_main_~y~0_591) (+ v_main_~x~0_836 v_main_~y~0_592)) .cse2))) InVars {main_~x~0=v_main_~x~0_837, main_~y~0=v_main_~y~0_592} OutVars{main_~x~0=v_main_~x~0_836, main_~y~0=v_main_~y~0_591} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {11545#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:16:10,000 INFO L290 TraceCheckUtils]: 9: Hoare triple {11545#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [165] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {11512#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:16:10,000 INFO L272 TraceCheckUtils]: 10: Hoare triple {11512#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {11552#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:16:10,001 INFO L290 TraceCheckUtils]: 11: Hoare triple {11552#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {11556#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:16:10,001 INFO L290 TraceCheckUtils]: 12: Hoare triple {11556#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {11505#false} is VALID [2022-04-15 06:16:10,001 INFO L290 TraceCheckUtils]: 13: Hoare triple {11505#false} assume !false; {11505#false} is VALID [2022-04-15 06:16:10,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:16:10,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:16:10,428 INFO L290 TraceCheckUtils]: 13: Hoare triple {11505#false} assume !false; {11505#false} is VALID [2022-04-15 06:16:10,429 INFO L290 TraceCheckUtils]: 12: Hoare triple {11556#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {11505#false} is VALID [2022-04-15 06:16:10,429 INFO L290 TraceCheckUtils]: 11: Hoare triple {11552#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {11556#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:16:10,430 INFO L272 TraceCheckUtils]: 10: Hoare triple {11512#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {11552#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:16:10,430 INFO L290 TraceCheckUtils]: 9: Hoare triple {11575#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [165] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {11512#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:16:10,431 INFO L290 TraceCheckUtils]: 8: Hoare triple {11579#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (< main_~x~0 (+ main_~y~0 1)) (not (<= 50 main_~x~0)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [168] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_592 v_main_~y~0_591)) (.cse1 (= v_main_~x~0_837 v_main_~x~0_836)) (.cse2 (<= 50 v_main_~x~0_837))) (or (and .cse0 .cse1 (or (not (< v_main_~x~0_837 100)) (not .cse2))) (and .cse0 .cse1) (and (< v_main_~x~0_837 v_main_~x~0_836) (< v_main_~x~0_836 101) (= (+ v_main_~x~0_837 v_main_~y~0_591) (+ v_main_~x~0_836 v_main_~y~0_592)) .cse2))) InVars {main_~x~0=v_main_~x~0_837, main_~y~0=v_main_~y~0_592} OutVars{main_~x~0=v_main_~x~0_836, main_~y~0=v_main_~y~0_591} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {11575#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:16:10,432 INFO L290 TraceCheckUtils]: 7: Hoare triple {11579#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (< main_~x~0 (+ main_~y~0 1)) (not (<= 50 main_~x~0)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [167] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {11579#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (< main_~x~0 (+ main_~y~0 1)) (not (<= 50 main_~x~0)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:16:10,432 INFO L290 TraceCheckUtils]: 6: Hoare triple {11586#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= 50 main_~y~0) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [166] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_835 v_main_~x~0_834))) (or .cse0 (and (< v_main_~x~0_835 v_main_~x~0_834) (< v_main_~x~0_834 51)) (and .cse0 (<= 50 v_main_~x~0_835)))) InVars {main_~x~0=v_main_~x~0_835} OutVars{main_~x~0=v_main_~x~0_834} AuxVars[] AssignedVars[main_~x~0] {11579#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (< main_~x~0 (+ main_~y~0 1)) (not (<= 50 main_~x~0)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:16:10,433 INFO L290 TraceCheckUtils]: 5: Hoare triple {11504#true} ~x~0 := 0;~y~0 := 50; {11586#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= 50 main_~y~0) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:16:10,433 INFO L272 TraceCheckUtils]: 4: Hoare triple {11504#true} call #t~ret1 := main(); {11504#true} is VALID [2022-04-15 06:16:10,433 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {11504#true} {11504#true} #56#return; {11504#true} is VALID [2022-04-15 06:16:10,433 INFO L290 TraceCheckUtils]: 2: Hoare triple {11504#true} assume true; {11504#true} is VALID [2022-04-15 06:16:10,433 INFO L290 TraceCheckUtils]: 1: Hoare triple {11504#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {11504#true} is VALID [2022-04-15 06:16:10,433 INFO L272 TraceCheckUtils]: 0: Hoare triple {11504#true} call ULTIMATE.init(); {11504#true} is VALID [2022-04-15 06:16:10,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:16:10,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066461862] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:16:10,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:16:10,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:16:11,595 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:16:11,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1479690638] [2022-04-15 06:16:11,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1479690638] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:16:11,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:16:11,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-04-15 06:16:11,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244714697] [2022-04-15 06:16:11,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:16:11,597 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 33 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2022-04-15 06:16:11,598 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:16:11,598 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 35 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 33 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:11,651 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 67 edges. 67 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:16:11,652 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-04-15 06:16:11,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:16:11,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-04-15 06:16:11,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=1792, Unknown=0, NotChecked=0, Total=2070 [2022-04-15 06:16:11,653 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand has 35 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 33 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:15,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:16:15,602 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2022-04-15 06:16:15,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-04-15 06:16:15,602 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 33 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2022-04-15 06:16:15,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:16:15,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 33 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:15,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 83 transitions. [2022-04-15 06:16:15,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 33 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:15,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 83 transitions. [2022-04-15 06:16:15,605 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 32 states and 83 transitions. [2022-04-15 06:16:15,697 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 83 edges. 83 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:16:15,698 INFO L225 Difference]: With dead ends: 78 [2022-04-15 06:16:15,698 INFO L226 Difference]: Without dead ends: 71 [2022-04-15 06:16:15,699 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1186 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=545, Invalid=5005, Unknown=0, NotChecked=0, Total=5550 [2022-04-15 06:16:15,700 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 37 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 2080 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 2114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-15 06:16:15,700 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 173 Invalid, 2114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2080 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-15 06:16:15,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-04-15 06:16:15,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-04-15 06:16:15,835 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:16:15,835 INFO L82 GeneralOperation]: Start isEquivalent. First operand 71 states. Second operand has 71 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 states have internal predecessors, (69), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:15,836 INFO L74 IsIncluded]: Start isIncluded. First operand 71 states. Second operand has 71 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 states have internal predecessors, (69), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:15,836 INFO L87 Difference]: Start difference. First operand 71 states. Second operand has 71 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 states have internal predecessors, (69), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:15,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:16:15,837 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions. [2022-04-15 06:16:15,837 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2022-04-15 06:16:15,837 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:16:15,837 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:16:15,837 INFO L74 IsIncluded]: Start isIncluded. First operand has 71 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 states have internal predecessors, (69), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 71 states. [2022-04-15 06:16:15,838 INFO L87 Difference]: Start difference. First operand has 71 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 states have internal predecessors, (69), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 71 states. [2022-04-15 06:16:15,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:16:15,838 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions. [2022-04-15 06:16:15,839 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2022-04-15 06:16:15,839 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:16:15,839 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:16:15,839 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:16:15,839 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:16:15,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 states have internal predecessors, (69), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:15,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2022-04-15 06:16:15,840 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 67 [2022-04-15 06:16:15,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:16:15,840 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2022-04-15 06:16:15,840 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 33 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:15,840 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 71 states and 73 transitions. [2022-04-15 06:16:15,911 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 73 edges. 73 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:16:15,911 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2022-04-15 06:16:15,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-15 06:16:15,912 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:16:15,912 INFO L499 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:16:15,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-04-15 06:16:16,112 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:16:16,113 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:16:16,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:16:16,113 INFO L85 PathProgramCache]: Analyzing trace with hash -483125721, now seen corresponding path program 28 times [2022-04-15 06:16:16,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:16:16,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [415544644] [2022-04-15 06:16:18,181 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-15 06:16:18,309 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:16:18,586 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:16:18,587 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:16:18,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1536348724, now seen corresponding path program 1 times [2022-04-15 06:16:18,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:16:18,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586957916] [2022-04-15 06:16:18,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:16:18,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:16:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:16:18,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:16:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:16:18,716 INFO L290 TraceCheckUtils]: 0: Hoare triple {12145#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {12134#true} is VALID [2022-04-15 06:16:18,716 INFO L290 TraceCheckUtils]: 1: Hoare triple {12134#true} assume true; {12134#true} is VALID [2022-04-15 06:16:18,716 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {12134#true} {12134#true} #56#return; {12134#true} is VALID [2022-04-15 06:16:18,717 INFO L272 TraceCheckUtils]: 0: Hoare triple {12134#true} call ULTIMATE.init(); {12145#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:16:18,717 INFO L290 TraceCheckUtils]: 1: Hoare triple {12145#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {12134#true} is VALID [2022-04-15 06:16:18,717 INFO L290 TraceCheckUtils]: 2: Hoare triple {12134#true} assume true; {12134#true} is VALID [2022-04-15 06:16:18,717 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {12134#true} {12134#true} #56#return; {12134#true} is VALID [2022-04-15 06:16:18,717 INFO L272 TraceCheckUtils]: 4: Hoare triple {12134#true} call #t~ret1 := main(); {12134#true} is VALID [2022-04-15 06:16:18,718 INFO L290 TraceCheckUtils]: 5: Hoare triple {12134#true} ~x~0 := 0;~y~0 := 50; {12139#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:16:18,718 INFO L290 TraceCheckUtils]: 6: Hoare triple {12139#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [170] L28-2-->L27-2_primed: Formula: (or (and (< v_main_~x~0_879 51) (< v_main_~x~0_880 v_main_~x~0_879)) (and (= v_main_~x~0_879 v_main_~x~0_880) (<= 50 v_main_~x~0_880)) (= v_main_~x~0_880 v_main_~x~0_879)) InVars {main_~x~0=v_main_~x~0_880} OutVars{main_~x~0=v_main_~x~0_879} AuxVars[] AssignedVars[main_~x~0] {12140#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:16:18,719 INFO L290 TraceCheckUtils]: 7: Hoare triple {12140#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [171] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {12140#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:16:18,720 INFO L290 TraceCheckUtils]: 8: Hoare triple {12140#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [172] L28-2-->L27-2_primed: Formula: (let ((.cse0 (<= 50 v_main_~x~0_882)) (.cse1 (= v_main_~x~0_882 v_main_~x~0_881)) (.cse2 (= v_main_~y~0_628 v_main_~y~0_627))) (or (and (< v_main_~x~0_881 101) (< v_main_~x~0_882 v_main_~x~0_881) (= (+ v_main_~x~0_881 v_main_~y~0_628) (+ v_main_~x~0_882 v_main_~y~0_627)) .cse0) (and .cse1 (or (not (< v_main_~x~0_882 100)) (not .cse0)) .cse2) (and .cse1 .cse2))) InVars {main_~x~0=v_main_~x~0_882, main_~y~0=v_main_~y~0_628} OutVars{main_~x~0=v_main_~x~0_881, main_~y~0=v_main_~y~0_627} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {12141#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:16:18,720 INFO L290 TraceCheckUtils]: 9: Hoare triple {12141#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [169] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {12142#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:16:18,721 INFO L272 TraceCheckUtils]: 10: Hoare triple {12142#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {12143#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:16:18,721 INFO L290 TraceCheckUtils]: 11: Hoare triple {12143#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {12144#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:16:18,722 INFO L290 TraceCheckUtils]: 12: Hoare triple {12144#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {12135#false} is VALID [2022-04-15 06:16:18,722 INFO L290 TraceCheckUtils]: 13: Hoare triple {12135#false} assume !false; {12135#false} is VALID [2022-04-15 06:16:18,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:16:18,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:16:18,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586957916] [2022-04-15 06:16:18,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586957916] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:16:18,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696760925] [2022-04-15 06:16:18,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:16:18,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:16:18,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:16:18,725 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:16:18,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-04-15 06:16:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:16:18,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:16:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:16:18,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:16:19,139 INFO L272 TraceCheckUtils]: 0: Hoare triple {12134#true} call ULTIMATE.init(); {12134#true} is VALID [2022-04-15 06:16:19,140 INFO L290 TraceCheckUtils]: 1: Hoare triple {12134#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {12134#true} is VALID [2022-04-15 06:16:19,140 INFO L290 TraceCheckUtils]: 2: Hoare triple {12134#true} assume true; {12134#true} is VALID [2022-04-15 06:16:19,140 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {12134#true} {12134#true} #56#return; {12134#true} is VALID [2022-04-15 06:16:19,140 INFO L272 TraceCheckUtils]: 4: Hoare triple {12134#true} call #t~ret1 := main(); {12134#true} is VALID [2022-04-15 06:16:19,144 INFO L290 TraceCheckUtils]: 5: Hoare triple {12134#true} ~x~0 := 0;~y~0 := 50; {12164#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:16:19,145 INFO L290 TraceCheckUtils]: 6: Hoare triple {12164#(and (<= main_~x~0 0) (= main_~y~0 50))} [170] L28-2-->L27-2_primed: Formula: (or (and (< v_main_~x~0_879 51) (< v_main_~x~0_880 v_main_~x~0_879)) (and (= v_main_~x~0_879 v_main_~x~0_880) (<= 50 v_main_~x~0_880)) (= v_main_~x~0_880 v_main_~x~0_879)) InVars {main_~x~0=v_main_~x~0_880} OutVars{main_~x~0=v_main_~x~0_879} AuxVars[] AssignedVars[main_~x~0] {12168#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:16:19,146 INFO L290 TraceCheckUtils]: 7: Hoare triple {12168#(and (= main_~y~0 50) (< main_~x~0 51))} [171] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {12168#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:16:19,147 INFO L290 TraceCheckUtils]: 8: Hoare triple {12168#(and (= main_~y~0 50) (< main_~x~0 51))} [172] L28-2-->L27-2_primed: Formula: (let ((.cse0 (<= 50 v_main_~x~0_882)) (.cse1 (= v_main_~x~0_882 v_main_~x~0_881)) (.cse2 (= v_main_~y~0_628 v_main_~y~0_627))) (or (and (< v_main_~x~0_881 101) (< v_main_~x~0_882 v_main_~x~0_881) (= (+ v_main_~x~0_881 v_main_~y~0_628) (+ v_main_~x~0_882 v_main_~y~0_627)) .cse0) (and .cse1 (or (not (< v_main_~x~0_882 100)) (not .cse0)) .cse2) (and .cse1 .cse2))) InVars {main_~x~0=v_main_~x~0_882, main_~y~0=v_main_~y~0_628} OutVars{main_~x~0=v_main_~x~0_881, main_~y~0=v_main_~y~0_627} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {12175#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:16:19,148 INFO L290 TraceCheckUtils]: 9: Hoare triple {12175#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [169] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {12142#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:16:19,148 INFO L272 TraceCheckUtils]: 10: Hoare triple {12142#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {12182#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:16:19,149 INFO L290 TraceCheckUtils]: 11: Hoare triple {12182#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {12186#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:16:19,149 INFO L290 TraceCheckUtils]: 12: Hoare triple {12186#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {12135#false} is VALID [2022-04-15 06:16:19,149 INFO L290 TraceCheckUtils]: 13: Hoare triple {12135#false} assume !false; {12135#false} is VALID [2022-04-15 06:16:19,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:16:19,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:16:19,675 INFO L290 TraceCheckUtils]: 13: Hoare triple {12135#false} assume !false; {12135#false} is VALID [2022-04-15 06:16:19,676 INFO L290 TraceCheckUtils]: 12: Hoare triple {12186#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {12135#false} is VALID [2022-04-15 06:16:19,676 INFO L290 TraceCheckUtils]: 11: Hoare triple {12182#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {12186#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:16:19,677 INFO L272 TraceCheckUtils]: 10: Hoare triple {12142#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {12182#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:16:19,677 INFO L290 TraceCheckUtils]: 9: Hoare triple {12205#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [169] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {12142#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:16:19,692 INFO L290 TraceCheckUtils]: 8: Hoare triple {12209#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [172] L28-2-->L27-2_primed: Formula: (let ((.cse0 (<= 50 v_main_~x~0_882)) (.cse1 (= v_main_~x~0_882 v_main_~x~0_881)) (.cse2 (= v_main_~y~0_628 v_main_~y~0_627))) (or (and (< v_main_~x~0_881 101) (< v_main_~x~0_882 v_main_~x~0_881) (= (+ v_main_~x~0_881 v_main_~y~0_628) (+ v_main_~x~0_882 v_main_~y~0_627)) .cse0) (and .cse1 (or (not (< v_main_~x~0_882 100)) (not .cse0)) .cse2) (and .cse1 .cse2))) InVars {main_~x~0=v_main_~x~0_882, main_~y~0=v_main_~y~0_628} OutVars{main_~x~0=v_main_~x~0_881, main_~y~0=v_main_~y~0_627} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {12205#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:16:19,693 INFO L290 TraceCheckUtils]: 7: Hoare triple {12209#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [171] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {12209#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:16:19,695 INFO L290 TraceCheckUtils]: 6: Hoare triple {12216#(and (<= 50 main_~y~0) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [170] L28-2-->L27-2_primed: Formula: (or (and (< v_main_~x~0_879 51) (< v_main_~x~0_880 v_main_~x~0_879)) (and (= v_main_~x~0_879 v_main_~x~0_880) (<= 50 v_main_~x~0_880)) (= v_main_~x~0_880 v_main_~x~0_879)) InVars {main_~x~0=v_main_~x~0_880} OutVars{main_~x~0=v_main_~x~0_879} AuxVars[] AssignedVars[main_~x~0] {12209#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:16:19,695 INFO L290 TraceCheckUtils]: 5: Hoare triple {12134#true} ~x~0 := 0;~y~0 := 50; {12216#(and (<= 50 main_~y~0) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:16:19,695 INFO L272 TraceCheckUtils]: 4: Hoare triple {12134#true} call #t~ret1 := main(); {12134#true} is VALID [2022-04-15 06:16:19,695 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {12134#true} {12134#true} #56#return; {12134#true} is VALID [2022-04-15 06:16:19,696 INFO L290 TraceCheckUtils]: 2: Hoare triple {12134#true} assume true; {12134#true} is VALID [2022-04-15 06:16:19,696 INFO L290 TraceCheckUtils]: 1: Hoare triple {12134#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {12134#true} is VALID [2022-04-15 06:16:19,696 INFO L272 TraceCheckUtils]: 0: Hoare triple {12134#true} call ULTIMATE.init(); {12134#true} is VALID [2022-04-15 06:16:19,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:16:19,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696760925] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:16:19,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:16:19,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:16:21,138 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:16:21,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [415544644] [2022-04-15 06:16:21,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [415544644] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:16:21,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:16:21,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-04-15 06:16:21,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032670869] [2022-04-15 06:16:21,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:16:21,139 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.8571428571428572) internal successors, (65), 34 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2022-04-15 06:16:21,140 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:16:21,140 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 36 states, 35 states have (on average 1.8571428571428572) internal successors, (65), 34 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:21,226 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 69 edges. 69 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:16:21,226 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-04-15 06:16:21,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:16:21,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-04-15 06:16:21,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=1877, Unknown=0, NotChecked=0, Total=2162 [2022-04-15 06:16:21,228 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand has 36 states, 35 states have (on average 1.8571428571428572) internal successors, (65), 34 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:26,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:16:26,021 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2022-04-15 06:16:26,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-04-15 06:16:26,021 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.8571428571428572) internal successors, (65), 34 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2022-04-15 06:16:26,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:16:26,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.8571428571428572) internal successors, (65), 34 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:26,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 85 transitions. [2022-04-15 06:16:26,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.8571428571428572) internal successors, (65), 34 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:26,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 85 transitions. [2022-04-15 06:16:26,023 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 33 states and 85 transitions. [2022-04-15 06:16:26,119 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 85 edges. 85 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:16:26,121 INFO L225 Difference]: With dead ends: 80 [2022-04-15 06:16:26,121 INFO L226 Difference]: Without dead ends: 73 [2022-04-15 06:16:26,121 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1239 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=561, Invalid=5291, Unknown=0, NotChecked=0, Total=5852 [2022-04-15 06:16:26,122 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 38 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 2148 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 2183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-04-15 06:16:26,122 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 173 Invalid, 2183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2148 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-04-15 06:16:26,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-04-15 06:16:26,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-04-15 06:16:26,275 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:16:26,276 INFO L82 GeneralOperation]: Start isEquivalent. First operand 73 states. Second operand has 73 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 68 states have internal predecessors, (71), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:26,276 INFO L74 IsIncluded]: Start isIncluded. First operand 73 states. Second operand has 73 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 68 states have internal predecessors, (71), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:26,276 INFO L87 Difference]: Start difference. First operand 73 states. Second operand has 73 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 68 states have internal predecessors, (71), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:26,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:16:26,277 INFO L93 Difference]: Finished difference Result 73 states and 75 transitions. [2022-04-15 06:16:26,277 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2022-04-15 06:16:26,277 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:16:26,277 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:16:26,278 INFO L74 IsIncluded]: Start isIncluded. First operand has 73 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 68 states have internal predecessors, (71), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 73 states. [2022-04-15 06:16:26,278 INFO L87 Difference]: Start difference. First operand has 73 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 68 states have internal predecessors, (71), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 73 states. [2022-04-15 06:16:26,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:16:26,279 INFO L93 Difference]: Finished difference Result 73 states and 75 transitions. [2022-04-15 06:16:26,279 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2022-04-15 06:16:26,279 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:16:26,279 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:16:26,279 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:16:26,279 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:16:26,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 68 states have internal predecessors, (71), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:26,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2022-04-15 06:16:26,280 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 69 [2022-04-15 06:16:26,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:16:26,281 INFO L478 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2022-04-15 06:16:26,281 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.8571428571428572) internal successors, (65), 34 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:26,281 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 73 states and 75 transitions. [2022-04-15 06:16:26,399 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 75 edges. 75 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:16:26,400 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2022-04-15 06:16:26,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-04-15 06:16:26,400 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:16:26,400 INFO L499 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:16:26,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-04-15 06:16:26,601 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:16:26,601 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:16:26,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:16:26,601 INFO L85 PathProgramCache]: Analyzing trace with hash 642322370, now seen corresponding path program 29 times [2022-04-15 06:16:26,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:16:26,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1155507770] [2022-04-15 06:16:30,686 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-15 06:16:30,737 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:16:31,038 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:16:31,039 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:16:31,041 INFO L85 PathProgramCache]: Analyzing trace with hash 513183436, now seen corresponding path program 1 times [2022-04-15 06:16:31,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:16:31,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973015151] [2022-04-15 06:16:31,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:16:31,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:16:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:16:31,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:16:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:16:31,139 INFO L290 TraceCheckUtils]: 0: Hoare triple {12790#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {12779#true} is VALID [2022-04-15 06:16:31,140 INFO L290 TraceCheckUtils]: 1: Hoare triple {12779#true} assume true; {12779#true} is VALID [2022-04-15 06:16:31,140 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {12779#true} {12779#true} #56#return; {12779#true} is VALID [2022-04-15 06:16:31,140 INFO L272 TraceCheckUtils]: 0: Hoare triple {12779#true} call ULTIMATE.init(); {12790#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:16:31,140 INFO L290 TraceCheckUtils]: 1: Hoare triple {12790#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {12779#true} is VALID [2022-04-15 06:16:31,140 INFO L290 TraceCheckUtils]: 2: Hoare triple {12779#true} assume true; {12779#true} is VALID [2022-04-15 06:16:31,141 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {12779#true} {12779#true} #56#return; {12779#true} is VALID [2022-04-15 06:16:31,141 INFO L272 TraceCheckUtils]: 4: Hoare triple {12779#true} call #t~ret1 := main(); {12779#true} is VALID [2022-04-15 06:16:31,141 INFO L290 TraceCheckUtils]: 5: Hoare triple {12779#true} ~x~0 := 0;~y~0 := 50; {12784#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:16:31,142 INFO L290 TraceCheckUtils]: 6: Hoare triple {12784#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [174] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_926 v_main_~x~0_925))) (or (and (< v_main_~x~0_926 v_main_~x~0_925) (< v_main_~x~0_925 51)) .cse0 (and (<= 50 v_main_~x~0_926) .cse0))) InVars {main_~x~0=v_main_~x~0_926} OutVars{main_~x~0=v_main_~x~0_925} AuxVars[] AssignedVars[main_~x~0] {12785#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:16:31,142 INFO L290 TraceCheckUtils]: 7: Hoare triple {12785#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [175] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {12785#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:16:31,143 INFO L290 TraceCheckUtils]: 8: Hoare triple {12785#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [176] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_928 v_main_~x~0_927)) (.cse1 (<= 50 v_main_~x~0_928))) (or (and .cse0 (= v_main_~y~0_664 v_main_~y~0_665) (or (not .cse1) (not (< v_main_~x~0_928 100)))) (and (= v_main_~y~0_665 v_main_~y~0_664) .cse0) (let ((.cse2 (+ v_main_~x~0_928 v_main_~y~0_664))) (and .cse1 (= .cse2 (+ v_main_~x~0_927 v_main_~y~0_665)) (< .cse2 (+ 101 v_main_~y~0_665)) (< v_main_~y~0_665 v_main_~y~0_664))))) InVars {main_~x~0=v_main_~x~0_928, main_~y~0=v_main_~y~0_665} OutVars{main_~x~0=v_main_~x~0_927, main_~y~0=v_main_~y~0_664} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {12786#(or (and (or (< 99 main_~y~0) (<= main_~x~0 main_~y~0)) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:16:31,144 INFO L290 TraceCheckUtils]: 9: Hoare triple {12786#(or (and (or (< 99 main_~y~0) (<= main_~x~0 main_~y~0)) (<= main_~y~0 100)) (<= main_~x~0 50))} [173] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {12787#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:16:31,145 INFO L272 TraceCheckUtils]: 10: Hoare triple {12787#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {12788#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:16:31,145 INFO L290 TraceCheckUtils]: 11: Hoare triple {12788#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {12789#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:16:31,145 INFO L290 TraceCheckUtils]: 12: Hoare triple {12789#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {12780#false} is VALID [2022-04-15 06:16:31,145 INFO L290 TraceCheckUtils]: 13: Hoare triple {12780#false} assume !false; {12780#false} is VALID [2022-04-15 06:16:31,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:16:31,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:16:31,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973015151] [2022-04-15 06:16:31,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973015151] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:16:31,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695340677] [2022-04-15 06:16:31,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:16:31,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:16:31,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:16:31,148 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:16:31,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-04-15 06:16:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:16:31,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:16:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:16:31,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:16:31,538 INFO L272 TraceCheckUtils]: 0: Hoare triple {12779#true} call ULTIMATE.init(); {12779#true} is VALID [2022-04-15 06:16:31,538 INFO L290 TraceCheckUtils]: 1: Hoare triple {12779#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {12779#true} is VALID [2022-04-15 06:16:31,538 INFO L290 TraceCheckUtils]: 2: Hoare triple {12779#true} assume true; {12779#true} is VALID [2022-04-15 06:16:31,538 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {12779#true} {12779#true} #56#return; {12779#true} is VALID [2022-04-15 06:16:31,539 INFO L272 TraceCheckUtils]: 4: Hoare triple {12779#true} call #t~ret1 := main(); {12779#true} is VALID [2022-04-15 06:16:31,541 INFO L290 TraceCheckUtils]: 5: Hoare triple {12779#true} ~x~0 := 0;~y~0 := 50; {12809#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:16:31,542 INFO L290 TraceCheckUtils]: 6: Hoare triple {12809#(and (<= main_~x~0 0) (= main_~y~0 50))} [174] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_926 v_main_~x~0_925))) (or (and (< v_main_~x~0_926 v_main_~x~0_925) (< v_main_~x~0_925 51)) .cse0 (and (<= 50 v_main_~x~0_926) .cse0))) InVars {main_~x~0=v_main_~x~0_926} OutVars{main_~x~0=v_main_~x~0_925} AuxVars[] AssignedVars[main_~x~0] {12813#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:16:31,542 INFO L290 TraceCheckUtils]: 7: Hoare triple {12813#(and (= main_~y~0 50) (< main_~x~0 51))} [175] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {12813#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:16:31,543 INFO L290 TraceCheckUtils]: 8: Hoare triple {12813#(and (= main_~y~0 50) (< main_~x~0 51))} [176] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_928 v_main_~x~0_927)) (.cse1 (<= 50 v_main_~x~0_928))) (or (and .cse0 (= v_main_~y~0_664 v_main_~y~0_665) (or (not .cse1) (not (< v_main_~x~0_928 100)))) (and (= v_main_~y~0_665 v_main_~y~0_664) .cse0) (let ((.cse2 (+ v_main_~x~0_928 v_main_~y~0_664))) (and .cse1 (= .cse2 (+ v_main_~x~0_927 v_main_~y~0_665)) (< .cse2 (+ 101 v_main_~y~0_665)) (< v_main_~y~0_665 v_main_~y~0_664))))) InVars {main_~x~0=v_main_~x~0_928, main_~y~0=v_main_~y~0_665} OutVars{main_~x~0=v_main_~x~0_927, main_~y~0=v_main_~y~0_664} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {12820#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:16:31,544 INFO L290 TraceCheckUtils]: 9: Hoare triple {12820#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [173] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {12787#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:16:31,545 INFO L272 TraceCheckUtils]: 10: Hoare triple {12787#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {12827#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:16:31,545 INFO L290 TraceCheckUtils]: 11: Hoare triple {12827#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {12831#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:16:31,559 INFO L290 TraceCheckUtils]: 12: Hoare triple {12831#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {12780#false} is VALID [2022-04-15 06:16:31,559 INFO L290 TraceCheckUtils]: 13: Hoare triple {12780#false} assume !false; {12780#false} is VALID [2022-04-15 06:16:31,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:16:31,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:16:32,153 INFO L290 TraceCheckUtils]: 13: Hoare triple {12780#false} assume !false; {12780#false} is VALID [2022-04-15 06:16:32,153 INFO L290 TraceCheckUtils]: 12: Hoare triple {12831#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {12780#false} is VALID [2022-04-15 06:16:32,154 INFO L290 TraceCheckUtils]: 11: Hoare triple {12827#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {12831#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:16:32,155 INFO L272 TraceCheckUtils]: 10: Hoare triple {12787#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {12827#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:16:32,155 INFO L290 TraceCheckUtils]: 9: Hoare triple {12850#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [173] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {12787#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:16:32,156 INFO L290 TraceCheckUtils]: 8: Hoare triple {12854#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [176] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_928 v_main_~x~0_927)) (.cse1 (<= 50 v_main_~x~0_928))) (or (and .cse0 (= v_main_~y~0_664 v_main_~y~0_665) (or (not .cse1) (not (< v_main_~x~0_928 100)))) (and (= v_main_~y~0_665 v_main_~y~0_664) .cse0) (let ((.cse2 (+ v_main_~x~0_928 v_main_~y~0_664))) (and .cse1 (= .cse2 (+ v_main_~x~0_927 v_main_~y~0_665)) (< .cse2 (+ 101 v_main_~y~0_665)) (< v_main_~y~0_665 v_main_~y~0_664))))) InVars {main_~x~0=v_main_~x~0_928, main_~y~0=v_main_~y~0_665} OutVars{main_~x~0=v_main_~x~0_927, main_~y~0=v_main_~y~0_664} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {12850#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:16:32,157 INFO L290 TraceCheckUtils]: 7: Hoare triple {12854#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [175] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {12854#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:16:32,158 INFO L290 TraceCheckUtils]: 6: Hoare triple {12861#(and (<= 50 main_~y~0) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [174] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_926 v_main_~x~0_925))) (or (and (< v_main_~x~0_926 v_main_~x~0_925) (< v_main_~x~0_925 51)) .cse0 (and (<= 50 v_main_~x~0_926) .cse0))) InVars {main_~x~0=v_main_~x~0_926} OutVars{main_~x~0=v_main_~x~0_925} AuxVars[] AssignedVars[main_~x~0] {12854#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:16:32,159 INFO L290 TraceCheckUtils]: 5: Hoare triple {12779#true} ~x~0 := 0;~y~0 := 50; {12861#(and (<= 50 main_~y~0) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:16:32,159 INFO L272 TraceCheckUtils]: 4: Hoare triple {12779#true} call #t~ret1 := main(); {12779#true} is VALID [2022-04-15 06:16:32,159 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {12779#true} {12779#true} #56#return; {12779#true} is VALID [2022-04-15 06:16:32,159 INFO L290 TraceCheckUtils]: 2: Hoare triple {12779#true} assume true; {12779#true} is VALID [2022-04-15 06:16:32,159 INFO L290 TraceCheckUtils]: 1: Hoare triple {12779#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {12779#true} is VALID [2022-04-15 06:16:32,159 INFO L272 TraceCheckUtils]: 0: Hoare triple {12779#true} call ULTIMATE.init(); {12779#true} is VALID [2022-04-15 06:16:32,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:16:32,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695340677] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:16:32,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:16:32,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:16:33,650 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:16:33,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1155507770] [2022-04-15 06:16:33,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1155507770] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:16:33,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:16:33,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-04-15 06:16:33,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99485787] [2022-04-15 06:16:33,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:16:33,651 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 35 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2022-04-15 06:16:33,651 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:16:33,651 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 37 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 35 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:33,716 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 71 edges. 71 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:16:33,716 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-04-15 06:16:33,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:16:33,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-04-15 06:16:33,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=1964, Unknown=0, NotChecked=0, Total=2256 [2022-04-15 06:16:33,717 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand has 37 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 35 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:38,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:16:38,869 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2022-04-15 06:16:38,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-04-15 06:16:38,870 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 35 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2022-04-15 06:16:38,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:16:38,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 35 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:38,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 87 transitions. [2022-04-15 06:16:38,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 35 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:38,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 87 transitions. [2022-04-15 06:16:38,872 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 34 states and 87 transitions. [2022-04-15 06:16:39,010 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 87 edges. 87 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:16:39,011 INFO L225 Difference]: With dead ends: 82 [2022-04-15 06:16:39,011 INFO L226 Difference]: Without dead ends: 75 [2022-04-15 06:16:39,012 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1293 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=577, Invalid=5585, Unknown=0, NotChecked=0, Total=6162 [2022-04-15 06:16:39,013 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 39 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 2346 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 2382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-04-15 06:16:39,013 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 183 Invalid, 2382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2346 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-04-15 06:16:39,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-04-15 06:16:39,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-04-15 06:16:39,159 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:16:39,159 INFO L82 GeneralOperation]: Start isEquivalent. First operand 75 states. Second operand has 75 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 states have internal predecessors, (73), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:39,160 INFO L74 IsIncluded]: Start isIncluded. First operand 75 states. Second operand has 75 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 states have internal predecessors, (73), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:39,160 INFO L87 Difference]: Start difference. First operand 75 states. Second operand has 75 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 states have internal predecessors, (73), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:39,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:16:39,162 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2022-04-15 06:16:39,162 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2022-04-15 06:16:39,162 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:16:39,162 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:16:39,162 INFO L74 IsIncluded]: Start isIncluded. First operand has 75 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 states have internal predecessors, (73), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 75 states. [2022-04-15 06:16:39,162 INFO L87 Difference]: Start difference. First operand has 75 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 states have internal predecessors, (73), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 75 states. [2022-04-15 06:16:39,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:16:39,164 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2022-04-15 06:16:39,164 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2022-04-15 06:16:39,164 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:16:39,164 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:16:39,164 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:16:39,164 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:16:39,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 states have internal predecessors, (73), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:39,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2022-04-15 06:16:39,166 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 71 [2022-04-15 06:16:39,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:16:39,166 INFO L478 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2022-04-15 06:16:39,166 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 35 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:39,166 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 75 states and 77 transitions. [2022-04-15 06:16:39,600 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 77 edges. 77 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:16:39,600 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2022-04-15 06:16:39,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-04-15 06:16:39,601 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:16:39,601 INFO L499 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:16:39,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-04-15 06:16:39,801 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:16:39,801 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:16:39,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:16:39,802 INFO L85 PathProgramCache]: Analyzing trace with hash -133820771, now seen corresponding path program 30 times [2022-04-15 06:16:39,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:16:39,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1358947502] [2022-04-15 06:16:39,907 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:16:42,264 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:16:42,266 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:16:42,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1732251700, now seen corresponding path program 1 times [2022-04-15 06:16:42,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:16:42,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568225340] [2022-04-15 06:16:42,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:16:42,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:16:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:16:42,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:16:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:16:42,400 INFO L290 TraceCheckUtils]: 0: Hoare triple {13450#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {13439#true} is VALID [2022-04-15 06:16:42,400 INFO L290 TraceCheckUtils]: 1: Hoare triple {13439#true} assume true; {13439#true} is VALID [2022-04-15 06:16:42,400 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {13439#true} {13439#true} #56#return; {13439#true} is VALID [2022-04-15 06:16:42,401 INFO L272 TraceCheckUtils]: 0: Hoare triple {13439#true} call ULTIMATE.init(); {13450#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:16:42,401 INFO L290 TraceCheckUtils]: 1: Hoare triple {13450#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {13439#true} is VALID [2022-04-15 06:16:42,401 INFO L290 TraceCheckUtils]: 2: Hoare triple {13439#true} assume true; {13439#true} is VALID [2022-04-15 06:16:42,401 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {13439#true} {13439#true} #56#return; {13439#true} is VALID [2022-04-15 06:16:42,401 INFO L272 TraceCheckUtils]: 4: Hoare triple {13439#true} call #t~ret1 := main(); {13439#true} is VALID [2022-04-15 06:16:42,402 INFO L290 TraceCheckUtils]: 5: Hoare triple {13439#true} ~x~0 := 0;~y~0 := 50; {13444#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:16:42,402 INFO L290 TraceCheckUtils]: 6: Hoare triple {13444#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [178] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_973 v_main_~x~0_972))) (or .cse0 (and (< v_main_~x~0_973 v_main_~x~0_972) (< v_main_~x~0_972 51)) (and .cse0 (not (< v_main_~x~0_973 50))))) InVars {main_~x~0=v_main_~x~0_973} OutVars{main_~x~0=v_main_~x~0_972} AuxVars[] AssignedVars[main_~x~0] {13445#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:16:42,403 INFO L290 TraceCheckUtils]: 7: Hoare triple {13445#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [179] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {13445#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:16:42,404 INFO L290 TraceCheckUtils]: 8: Hoare triple {13445#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [180] L28-2-->L27-2_primed: Formula: (let ((.cse2 (<= 50 v_main_~x~0_975)) (.cse0 (= v_main_~x~0_975 v_main_~x~0_974)) (.cse1 (= v_main_~y~0_703 v_main_~y~0_702))) (or (and .cse0 .cse1 (or (not (< v_main_~x~0_975 100)) (not .cse2))) (let ((.cse3 (+ v_main_~x~0_975 v_main_~y~0_702))) (and (< .cse3 (+ 101 v_main_~y~0_703)) .cse2 (< v_main_~y~0_703 v_main_~y~0_702) (= (+ v_main_~x~0_974 v_main_~y~0_703) .cse3))) (and .cse0 .cse1))) InVars {main_~x~0=v_main_~x~0_975, main_~y~0=v_main_~y~0_703} OutVars{main_~x~0=v_main_~x~0_974, main_~y~0=v_main_~y~0_702} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {13446#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:16:42,405 INFO L290 TraceCheckUtils]: 9: Hoare triple {13446#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [177] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {13447#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:16:42,405 INFO L272 TraceCheckUtils]: 10: Hoare triple {13447#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {13448#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:16:42,406 INFO L290 TraceCheckUtils]: 11: Hoare triple {13448#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {13449#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:16:42,406 INFO L290 TraceCheckUtils]: 12: Hoare triple {13449#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {13440#false} is VALID [2022-04-15 06:16:42,406 INFO L290 TraceCheckUtils]: 13: Hoare triple {13440#false} assume !false; {13440#false} is VALID [2022-04-15 06:16:42,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:16:42,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:16:42,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568225340] [2022-04-15 06:16:42,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568225340] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:16:42,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612825109] [2022-04-15 06:16:42,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:16:42,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:16:42,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:16:42,409 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:16:42,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-04-15 06:16:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:16:42,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:16:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:16:42,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:16:42,827 INFO L272 TraceCheckUtils]: 0: Hoare triple {13439#true} call ULTIMATE.init(); {13439#true} is VALID [2022-04-15 06:16:42,827 INFO L290 TraceCheckUtils]: 1: Hoare triple {13439#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {13439#true} is VALID [2022-04-15 06:16:42,827 INFO L290 TraceCheckUtils]: 2: Hoare triple {13439#true} assume true; {13439#true} is VALID [2022-04-15 06:16:42,827 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {13439#true} {13439#true} #56#return; {13439#true} is VALID [2022-04-15 06:16:42,827 INFO L272 TraceCheckUtils]: 4: Hoare triple {13439#true} call #t~ret1 := main(); {13439#true} is VALID [2022-04-15 06:16:42,828 INFO L290 TraceCheckUtils]: 5: Hoare triple {13439#true} ~x~0 := 0;~y~0 := 50; {13469#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:16:42,828 INFO L290 TraceCheckUtils]: 6: Hoare triple {13469#(and (<= main_~x~0 0) (= main_~y~0 50))} [178] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_973 v_main_~x~0_972))) (or .cse0 (and (< v_main_~x~0_973 v_main_~x~0_972) (< v_main_~x~0_972 51)) (and .cse0 (not (< v_main_~x~0_973 50))))) InVars {main_~x~0=v_main_~x~0_973} OutVars{main_~x~0=v_main_~x~0_972} AuxVars[] AssignedVars[main_~x~0] {13473#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:16:42,829 INFO L290 TraceCheckUtils]: 7: Hoare triple {13473#(and (= main_~y~0 50) (< main_~x~0 51))} [179] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {13473#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:16:42,830 INFO L290 TraceCheckUtils]: 8: Hoare triple {13473#(and (= main_~y~0 50) (< main_~x~0 51))} [180] L28-2-->L27-2_primed: Formula: (let ((.cse2 (<= 50 v_main_~x~0_975)) (.cse0 (= v_main_~x~0_975 v_main_~x~0_974)) (.cse1 (= v_main_~y~0_703 v_main_~y~0_702))) (or (and .cse0 .cse1 (or (not (< v_main_~x~0_975 100)) (not .cse2))) (let ((.cse3 (+ v_main_~x~0_975 v_main_~y~0_702))) (and (< .cse3 (+ 101 v_main_~y~0_703)) .cse2 (< v_main_~y~0_703 v_main_~y~0_702) (= (+ v_main_~x~0_974 v_main_~y~0_703) .cse3))) (and .cse0 .cse1))) InVars {main_~x~0=v_main_~x~0_975, main_~y~0=v_main_~y~0_703} OutVars{main_~x~0=v_main_~x~0_974, main_~y~0=v_main_~y~0_702} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {13480#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:16:42,831 INFO L290 TraceCheckUtils]: 9: Hoare triple {13480#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [177] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {13447#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:16:42,831 INFO L272 TraceCheckUtils]: 10: Hoare triple {13447#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {13487#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:16:42,832 INFO L290 TraceCheckUtils]: 11: Hoare triple {13487#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {13491#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:16:42,832 INFO L290 TraceCheckUtils]: 12: Hoare triple {13491#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {13440#false} is VALID [2022-04-15 06:16:42,832 INFO L290 TraceCheckUtils]: 13: Hoare triple {13440#false} assume !false; {13440#false} is VALID [2022-04-15 06:16:42,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:16:42,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:16:43,354 INFO L290 TraceCheckUtils]: 13: Hoare triple {13440#false} assume !false; {13440#false} is VALID [2022-04-15 06:16:43,355 INFO L290 TraceCheckUtils]: 12: Hoare triple {13491#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {13440#false} is VALID [2022-04-15 06:16:43,355 INFO L290 TraceCheckUtils]: 11: Hoare triple {13487#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {13491#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:16:43,356 INFO L272 TraceCheckUtils]: 10: Hoare triple {13447#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {13487#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:16:43,356 INFO L290 TraceCheckUtils]: 9: Hoare triple {13510#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [177] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {13447#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:16:43,358 INFO L290 TraceCheckUtils]: 8: Hoare triple {13514#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (< main_~x~0 (+ main_~y~0 1)) (not (<= 50 main_~x~0)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [180] L28-2-->L27-2_primed: Formula: (let ((.cse2 (<= 50 v_main_~x~0_975)) (.cse0 (= v_main_~x~0_975 v_main_~x~0_974)) (.cse1 (= v_main_~y~0_703 v_main_~y~0_702))) (or (and .cse0 .cse1 (or (not (< v_main_~x~0_975 100)) (not .cse2))) (let ((.cse3 (+ v_main_~x~0_975 v_main_~y~0_702))) (and (< .cse3 (+ 101 v_main_~y~0_703)) .cse2 (< v_main_~y~0_703 v_main_~y~0_702) (= (+ v_main_~x~0_974 v_main_~y~0_703) .cse3))) (and .cse0 .cse1))) InVars {main_~x~0=v_main_~x~0_975, main_~y~0=v_main_~y~0_703} OutVars{main_~x~0=v_main_~x~0_974, main_~y~0=v_main_~y~0_702} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {13510#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:16:43,358 INFO L290 TraceCheckUtils]: 7: Hoare triple {13514#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (< main_~x~0 (+ main_~y~0 1)) (not (<= 50 main_~x~0)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [179] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {13514#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (< main_~x~0 (+ main_~y~0 1)) (not (<= 50 main_~x~0)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:16:43,360 INFO L290 TraceCheckUtils]: 6: Hoare triple {13521#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= 50 main_~y~0) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [178] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_973 v_main_~x~0_972))) (or .cse0 (and (< v_main_~x~0_973 v_main_~x~0_972) (< v_main_~x~0_972 51)) (and .cse0 (not (< v_main_~x~0_973 50))))) InVars {main_~x~0=v_main_~x~0_973} OutVars{main_~x~0=v_main_~x~0_972} AuxVars[] AssignedVars[main_~x~0] {13514#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (< main_~x~0 (+ main_~y~0 1)) (not (<= 50 main_~x~0)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:16:43,360 INFO L290 TraceCheckUtils]: 5: Hoare triple {13439#true} ~x~0 := 0;~y~0 := 50; {13521#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= 50 main_~y~0) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:16:43,360 INFO L272 TraceCheckUtils]: 4: Hoare triple {13439#true} call #t~ret1 := main(); {13439#true} is VALID [2022-04-15 06:16:43,360 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {13439#true} {13439#true} #56#return; {13439#true} is VALID [2022-04-15 06:16:43,360 INFO L290 TraceCheckUtils]: 2: Hoare triple {13439#true} assume true; {13439#true} is VALID [2022-04-15 06:16:43,361 INFO L290 TraceCheckUtils]: 1: Hoare triple {13439#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {13439#true} is VALID [2022-04-15 06:16:43,361 INFO L272 TraceCheckUtils]: 0: Hoare triple {13439#true} call ULTIMATE.init(); {13439#true} is VALID [2022-04-15 06:16:43,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:16:43,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612825109] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:16:43,361 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:16:43,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:16:44,976 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:16:44,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1358947502] [2022-04-15 06:16:44,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1358947502] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:16:44,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:16:44,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-04-15 06:16:44,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300385092] [2022-04-15 06:16:44,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:16:44,977 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.864864864864865) internal successors, (69), 36 states have internal predecessors, (69), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2022-04-15 06:16:44,977 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:16:44,977 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 38 states, 37 states have (on average 1.864864864864865) internal successors, (69), 36 states have internal predecessors, (69), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:45,042 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 73 edges. 73 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:16:45,042 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-04-15 06:16:45,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:16:45,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-04-15 06:16:45,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=2053, Unknown=0, NotChecked=0, Total=2352 [2022-04-15 06:16:45,043 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand has 38 states, 37 states have (on average 1.864864864864865) internal successors, (69), 36 states have internal predecessors, (69), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:50,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:16:50,498 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2022-04-15 06:16:50,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-04-15 06:16:50,498 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.864864864864865) internal successors, (69), 36 states have internal predecessors, (69), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2022-04-15 06:16:50,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:16:50,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.864864864864865) internal successors, (69), 36 states have internal predecessors, (69), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:50,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 89 transitions. [2022-04-15 06:16:50,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.864864864864865) internal successors, (69), 36 states have internal predecessors, (69), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:50,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 89 transitions. [2022-04-15 06:16:50,501 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 35 states and 89 transitions. [2022-04-15 06:16:50,818 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 89 edges. 89 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:16:50,819 INFO L225 Difference]: With dead ends: 84 [2022-04-15 06:16:50,819 INFO L226 Difference]: Without dead ends: 77 [2022-04-15 06:16:50,820 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=593, Invalid=5887, Unknown=0, NotChecked=0, Total=6480 [2022-04-15 06:16:50,820 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 40 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 2522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-04-15 06:16:50,820 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 188 Invalid, 2522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2485 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-04-15 06:16:50,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-04-15 06:16:51,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-04-15 06:16:51,130 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:16:51,131 INFO L82 GeneralOperation]: Start isEquivalent. First operand 77 states. Second operand has 77 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 72 states have internal predecessors, (75), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:51,131 INFO L74 IsIncluded]: Start isIncluded. First operand 77 states. Second operand has 77 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 72 states have internal predecessors, (75), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:51,131 INFO L87 Difference]: Start difference. First operand 77 states. Second operand has 77 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 72 states have internal predecessors, (75), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:51,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:16:51,132 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2022-04-15 06:16:51,133 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2022-04-15 06:16:51,133 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:16:51,133 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:16:51,133 INFO L74 IsIncluded]: Start isIncluded. First operand has 77 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 72 states have internal predecessors, (75), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 77 states. [2022-04-15 06:16:51,133 INFO L87 Difference]: Start difference. First operand has 77 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 72 states have internal predecessors, (75), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 77 states. [2022-04-15 06:16:51,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:16:51,134 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2022-04-15 06:16:51,134 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2022-04-15 06:16:51,134 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:16:51,134 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:16:51,135 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:16:51,135 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:16:51,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 72 states have internal predecessors, (75), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:51,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2022-04-15 06:16:51,136 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 73 [2022-04-15 06:16:51,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:16:51,137 INFO L478 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2022-04-15 06:16:51,137 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.864864864864865) internal successors, (69), 36 states have internal predecessors, (69), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:51,137 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 77 states and 79 transitions. [2022-04-15 06:16:51,266 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 79 edges. 79 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:16:51,266 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2022-04-15 06:16:51,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-04-15 06:16:51,267 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:16:51,267 INFO L499 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:16:51,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-04-15 06:16:51,467 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-04-15 06:16:51,468 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:16:51,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:16:51,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1316930232, now seen corresponding path program 31 times [2022-04-15 06:16:51,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:16:51,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1140591107] [2022-04-15 06:16:55,546 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-15 06:16:55,607 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:16:56,085 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:16:56,086 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:16:56,088 INFO L85 PathProgramCache]: Analyzing trace with hash 317280460, now seen corresponding path program 1 times [2022-04-15 06:16:56,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:16:56,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605208941] [2022-04-15 06:16:56,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:16:56,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:16:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:16:56,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:16:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:16:56,221 INFO L290 TraceCheckUtils]: 0: Hoare triple {14125#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {14114#true} is VALID [2022-04-15 06:16:56,221 INFO L290 TraceCheckUtils]: 1: Hoare triple {14114#true} assume true; {14114#true} is VALID [2022-04-15 06:16:56,222 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {14114#true} {14114#true} #56#return; {14114#true} is VALID [2022-04-15 06:16:56,222 INFO L272 TraceCheckUtils]: 0: Hoare triple {14114#true} call ULTIMATE.init(); {14125#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:16:56,222 INFO L290 TraceCheckUtils]: 1: Hoare triple {14125#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {14114#true} is VALID [2022-04-15 06:16:56,222 INFO L290 TraceCheckUtils]: 2: Hoare triple {14114#true} assume true; {14114#true} is VALID [2022-04-15 06:16:56,222 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {14114#true} {14114#true} #56#return; {14114#true} is VALID [2022-04-15 06:16:56,223 INFO L272 TraceCheckUtils]: 4: Hoare triple {14114#true} call #t~ret1 := main(); {14114#true} is VALID [2022-04-15 06:16:56,223 INFO L290 TraceCheckUtils]: 5: Hoare triple {14114#true} ~x~0 := 0;~y~0 := 50; {14119#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:16:56,224 INFO L290 TraceCheckUtils]: 6: Hoare triple {14119#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [182] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1021 v_main_~x~0_1020))) (or .cse0 (and (< v_main_~x~0_1020 51) (< v_main_~x~0_1021 v_main_~x~0_1020)) (and .cse0 (<= 50 v_main_~x~0_1021)))) InVars {main_~x~0=v_main_~x~0_1021} OutVars{main_~x~0=v_main_~x~0_1020} AuxVars[] AssignedVars[main_~x~0] {14120#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:16:56,224 INFO L290 TraceCheckUtils]: 7: Hoare triple {14120#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [183] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {14120#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:16:56,225 INFO L290 TraceCheckUtils]: 8: Hoare triple {14120#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [184] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1023 v_main_~x~0_1022)) (.cse1 (<= 50 v_main_~x~0_1023))) (or (and (= v_main_~y~0_742 v_main_~y~0_741) .cse0) (and (or (not (< v_main_~x~0_1023 100)) (not .cse1)) (= v_main_~y~0_741 v_main_~y~0_742) .cse0) (and (= (+ v_main_~x~0_1023 v_main_~y~0_741) (+ v_main_~x~0_1022 v_main_~y~0_742)) (< v_main_~x~0_1023 v_main_~x~0_1022) .cse1 (< v_main_~x~0_1022 101)))) InVars {main_~x~0=v_main_~x~0_1023, main_~y~0=v_main_~y~0_742} OutVars{main_~x~0=v_main_~x~0_1022, main_~y~0=v_main_~y~0_741} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {14121#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:16:56,226 INFO L290 TraceCheckUtils]: 9: Hoare triple {14121#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [181] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {14122#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:16:56,227 INFO L272 TraceCheckUtils]: 10: Hoare triple {14122#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {14123#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:16:56,227 INFO L290 TraceCheckUtils]: 11: Hoare triple {14123#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {14124#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:16:56,227 INFO L290 TraceCheckUtils]: 12: Hoare triple {14124#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {14115#false} is VALID [2022-04-15 06:16:56,228 INFO L290 TraceCheckUtils]: 13: Hoare triple {14115#false} assume !false; {14115#false} is VALID [2022-04-15 06:16:56,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:16:56,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:16:56,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605208941] [2022-04-15 06:16:56,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605208941] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:16:56,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113795271] [2022-04-15 06:16:56,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:16:56,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:16:56,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:16:56,230 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:16:56,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-04-15 06:16:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:16:56,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:16:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:16:56,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:16:56,721 INFO L272 TraceCheckUtils]: 0: Hoare triple {14114#true} call ULTIMATE.init(); {14114#true} is VALID [2022-04-15 06:16:56,722 INFO L290 TraceCheckUtils]: 1: Hoare triple {14114#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {14114#true} is VALID [2022-04-15 06:16:56,722 INFO L290 TraceCheckUtils]: 2: Hoare triple {14114#true} assume true; {14114#true} is VALID [2022-04-15 06:16:56,722 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {14114#true} {14114#true} #56#return; {14114#true} is VALID [2022-04-15 06:16:56,722 INFO L272 TraceCheckUtils]: 4: Hoare triple {14114#true} call #t~ret1 := main(); {14114#true} is VALID [2022-04-15 06:16:56,734 INFO L290 TraceCheckUtils]: 5: Hoare triple {14114#true} ~x~0 := 0;~y~0 := 50; {14144#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:16:56,735 INFO L290 TraceCheckUtils]: 6: Hoare triple {14144#(and (<= main_~x~0 0) (= main_~y~0 50))} [182] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1021 v_main_~x~0_1020))) (or .cse0 (and (< v_main_~x~0_1020 51) (< v_main_~x~0_1021 v_main_~x~0_1020)) (and .cse0 (<= 50 v_main_~x~0_1021)))) InVars {main_~x~0=v_main_~x~0_1021} OutVars{main_~x~0=v_main_~x~0_1020} AuxVars[] AssignedVars[main_~x~0] {14148#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:16:56,735 INFO L290 TraceCheckUtils]: 7: Hoare triple {14148#(and (= main_~y~0 50) (< main_~x~0 51))} [183] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {14148#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:16:56,736 INFO L290 TraceCheckUtils]: 8: Hoare triple {14148#(and (= main_~y~0 50) (< main_~x~0 51))} [184] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1023 v_main_~x~0_1022)) (.cse1 (<= 50 v_main_~x~0_1023))) (or (and (= v_main_~y~0_742 v_main_~y~0_741) .cse0) (and (or (not (< v_main_~x~0_1023 100)) (not .cse1)) (= v_main_~y~0_741 v_main_~y~0_742) .cse0) (and (= (+ v_main_~x~0_1023 v_main_~y~0_741) (+ v_main_~x~0_1022 v_main_~y~0_742)) (< v_main_~x~0_1023 v_main_~x~0_1022) .cse1 (< v_main_~x~0_1022 101)))) InVars {main_~x~0=v_main_~x~0_1023, main_~y~0=v_main_~y~0_742} OutVars{main_~x~0=v_main_~x~0_1022, main_~y~0=v_main_~y~0_741} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {14155#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:16:56,737 INFO L290 TraceCheckUtils]: 9: Hoare triple {14155#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [181] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {14122#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:16:56,738 INFO L272 TraceCheckUtils]: 10: Hoare triple {14122#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {14162#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:16:56,738 INFO L290 TraceCheckUtils]: 11: Hoare triple {14162#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {14166#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:16:56,739 INFO L290 TraceCheckUtils]: 12: Hoare triple {14166#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {14115#false} is VALID [2022-04-15 06:16:56,739 INFO L290 TraceCheckUtils]: 13: Hoare triple {14115#false} assume !false; {14115#false} is VALID [2022-04-15 06:16:56,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:16:56,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:16:57,299 INFO L290 TraceCheckUtils]: 13: Hoare triple {14115#false} assume !false; {14115#false} is VALID [2022-04-15 06:16:57,300 INFO L290 TraceCheckUtils]: 12: Hoare triple {14166#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {14115#false} is VALID [2022-04-15 06:16:57,300 INFO L290 TraceCheckUtils]: 11: Hoare triple {14162#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {14166#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:16:57,301 INFO L272 TraceCheckUtils]: 10: Hoare triple {14122#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {14162#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:16:57,302 INFO L290 TraceCheckUtils]: 9: Hoare triple {14185#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [181] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {14122#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:16:57,303 INFO L290 TraceCheckUtils]: 8: Hoare triple {14189#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [184] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1023 v_main_~x~0_1022)) (.cse1 (<= 50 v_main_~x~0_1023))) (or (and (= v_main_~y~0_742 v_main_~y~0_741) .cse0) (and (or (not (< v_main_~x~0_1023 100)) (not .cse1)) (= v_main_~y~0_741 v_main_~y~0_742) .cse0) (and (= (+ v_main_~x~0_1023 v_main_~y~0_741) (+ v_main_~x~0_1022 v_main_~y~0_742)) (< v_main_~x~0_1023 v_main_~x~0_1022) .cse1 (< v_main_~x~0_1022 101)))) InVars {main_~x~0=v_main_~x~0_1023, main_~y~0=v_main_~y~0_742} OutVars{main_~x~0=v_main_~x~0_1022, main_~y~0=v_main_~y~0_741} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {14185#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:16:57,303 INFO L290 TraceCheckUtils]: 7: Hoare triple {14189#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [183] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {14189#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:16:57,304 INFO L290 TraceCheckUtils]: 6: Hoare triple {14196#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= 50 main_~y~0) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [182] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1021 v_main_~x~0_1020))) (or .cse0 (and (< v_main_~x~0_1020 51) (< v_main_~x~0_1021 v_main_~x~0_1020)) (and .cse0 (<= 50 v_main_~x~0_1021)))) InVars {main_~x~0=v_main_~x~0_1021} OutVars{main_~x~0=v_main_~x~0_1020} AuxVars[] AssignedVars[main_~x~0] {14189#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:16:57,305 INFO L290 TraceCheckUtils]: 5: Hoare triple {14114#true} ~x~0 := 0;~y~0 := 50; {14196#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= 50 main_~y~0) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:16:57,305 INFO L272 TraceCheckUtils]: 4: Hoare triple {14114#true} call #t~ret1 := main(); {14114#true} is VALID [2022-04-15 06:16:57,305 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {14114#true} {14114#true} #56#return; {14114#true} is VALID [2022-04-15 06:16:57,305 INFO L290 TraceCheckUtils]: 2: Hoare triple {14114#true} assume true; {14114#true} is VALID [2022-04-15 06:16:57,305 INFO L290 TraceCheckUtils]: 1: Hoare triple {14114#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {14114#true} is VALID [2022-04-15 06:16:57,305 INFO L272 TraceCheckUtils]: 0: Hoare triple {14114#true} call ULTIMATE.init(); {14114#true} is VALID [2022-04-15 06:16:57,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:16:57,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113795271] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:16:57,306 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:16:57,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:16:58,968 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:16:58,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1140591107] [2022-04-15 06:16:58,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1140591107] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:16:58,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:16:58,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-04-15 06:16:58,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388972168] [2022-04-15 06:16:58,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:16:58,969 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.868421052631579) internal successors, (71), 37 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2022-04-15 06:16:58,969 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:16:58,969 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 39 states, 38 states have (on average 1.868421052631579) internal successors, (71), 37 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:16:59,047 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 75 edges. 75 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:16:59,047 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-04-15 06:16:59,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:16:59,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-04-15 06:16:59,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=2144, Unknown=0, NotChecked=0, Total=2450 [2022-04-15 06:16:59,048 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand has 39 states, 38 states have (on average 1.868421052631579) internal successors, (71), 37 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:04,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:17:04,707 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2022-04-15 06:17:04,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-04-15 06:17:04,707 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.868421052631579) internal successors, (71), 37 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2022-04-15 06:17:04,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:17:04,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.868421052631579) internal successors, (71), 37 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:04,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 91 transitions. [2022-04-15 06:17:04,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.868421052631579) internal successors, (71), 37 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:04,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 91 transitions. [2022-04-15 06:17:04,710 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 36 states and 91 transitions. [2022-04-15 06:17:04,831 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 91 edges. 91 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:17:04,832 INFO L225 Difference]: With dead ends: 86 [2022-04-15 06:17:04,832 INFO L226 Difference]: Without dead ends: 79 [2022-04-15 06:17:04,833 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 51 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1404 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=609, Invalid=6197, Unknown=0, NotChecked=0, Total=6806 [2022-04-15 06:17:04,834 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 41 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 2559 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 2597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-04-15 06:17:04,834 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 188 Invalid, 2597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2559 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-04-15 06:17:04,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-04-15 06:17:04,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-04-15 06:17:04,977 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:17:04,977 INFO L82 GeneralOperation]: Start isEquivalent. First operand 79 states. Second operand has 79 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 74 states have internal predecessors, (77), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:04,977 INFO L74 IsIncluded]: Start isIncluded. First operand 79 states. Second operand has 79 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 74 states have internal predecessors, (77), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:04,977 INFO L87 Difference]: Start difference. First operand 79 states. Second operand has 79 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 74 states have internal predecessors, (77), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:04,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:17:04,979 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2022-04-15 06:17:04,979 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2022-04-15 06:17:04,979 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:17:04,980 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:17:04,980 INFO L74 IsIncluded]: Start isIncluded. First operand has 79 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 74 states have internal predecessors, (77), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 79 states. [2022-04-15 06:17:04,980 INFO L87 Difference]: Start difference. First operand has 79 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 74 states have internal predecessors, (77), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 79 states. [2022-04-15 06:17:04,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:17:04,981 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2022-04-15 06:17:04,981 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2022-04-15 06:17:04,981 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:17:04,981 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:17:04,981 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:17:04,981 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:17:04,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 74 states have internal predecessors, (77), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:04,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2022-04-15 06:17:04,983 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 75 [2022-04-15 06:17:04,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:17:04,984 INFO L478 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2022-04-15 06:17:04,984 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 1.868421052631579) internal successors, (71), 37 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:04,984 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 79 states and 81 transitions. [2022-04-15 06:17:05,063 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 81 edges. 81 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:17:05,063 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2022-04-15 06:17:05,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-04-15 06:17:05,064 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:17:05,064 INFO L499 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:17:05,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-04-15 06:17:05,264 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:17:05,264 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:17:05,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:17:05,265 INFO L85 PathProgramCache]: Analyzing trace with hash -375727085, now seen corresponding path program 32 times [2022-04-15 06:17:05,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:17:05,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [354645450] [2022-04-15 06:17:09,564 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-15 06:17:09,616 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:17:09,849 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:17:09,851 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:17:09,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1928154676, now seen corresponding path program 1 times [2022-04-15 06:17:09,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:17:09,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643446056] [2022-04-15 06:17:09,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:17:09,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:17:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:17:09,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:17:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:17:09,996 INFO L290 TraceCheckUtils]: 0: Hoare triple {14815#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {14804#true} is VALID [2022-04-15 06:17:09,996 INFO L290 TraceCheckUtils]: 1: Hoare triple {14804#true} assume true; {14804#true} is VALID [2022-04-15 06:17:09,996 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {14804#true} {14804#true} #56#return; {14804#true} is VALID [2022-04-15 06:17:09,996 INFO L272 TraceCheckUtils]: 0: Hoare triple {14804#true} call ULTIMATE.init(); {14815#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:17:09,996 INFO L290 TraceCheckUtils]: 1: Hoare triple {14815#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {14804#true} is VALID [2022-04-15 06:17:09,997 INFO L290 TraceCheckUtils]: 2: Hoare triple {14804#true} assume true; {14804#true} is VALID [2022-04-15 06:17:09,997 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {14804#true} {14804#true} #56#return; {14804#true} is VALID [2022-04-15 06:17:09,997 INFO L272 TraceCheckUtils]: 4: Hoare triple {14804#true} call #t~ret1 := main(); {14804#true} is VALID [2022-04-15 06:17:09,997 INFO L290 TraceCheckUtils]: 5: Hoare triple {14804#true} ~x~0 := 0;~y~0 := 50; {14809#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:17:09,998 INFO L290 TraceCheckUtils]: 6: Hoare triple {14809#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [186] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1070 v_main_~x~0_1069))) (or .cse0 (and (< v_main_~x~0_1069 51) (< v_main_~x~0_1070 v_main_~x~0_1069)) (and .cse0 (not (< v_main_~x~0_1070 50))))) InVars {main_~x~0=v_main_~x~0_1070} OutVars{main_~x~0=v_main_~x~0_1069} AuxVars[] AssignedVars[main_~x~0] {14810#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:17:09,998 INFO L290 TraceCheckUtils]: 7: Hoare triple {14810#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [187] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {14810#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:17:10,000 INFO L290 TraceCheckUtils]: 8: Hoare triple {14810#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [188] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_782 v_main_~y~0_781)) (.cse1 (<= 50 v_main_~x~0_1072))) (or (and .cse0 (= v_main_~x~0_1072 v_main_~x~0_1071)) (and .cse0 (or (not (< v_main_~x~0_1072 100)) (not .cse1)) (= v_main_~x~0_1071 v_main_~x~0_1072)) (and (= (+ v_main_~x~0_1072 v_main_~y~0_781) (+ v_main_~x~0_1071 v_main_~y~0_782)) .cse1 (< v_main_~x~0_1071 101) (< v_main_~x~0_1072 v_main_~x~0_1071)))) InVars {main_~x~0=v_main_~x~0_1072, main_~y~0=v_main_~y~0_782} OutVars{main_~x~0=v_main_~x~0_1071, main_~y~0=v_main_~y~0_781} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {14811#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:17:10,000 INFO L290 TraceCheckUtils]: 9: Hoare triple {14811#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [185] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {14812#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:17:10,001 INFO L272 TraceCheckUtils]: 10: Hoare triple {14812#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {14813#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:17:10,001 INFO L290 TraceCheckUtils]: 11: Hoare triple {14813#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {14814#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:17:10,002 INFO L290 TraceCheckUtils]: 12: Hoare triple {14814#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {14805#false} is VALID [2022-04-15 06:17:10,002 INFO L290 TraceCheckUtils]: 13: Hoare triple {14805#false} assume !false; {14805#false} is VALID [2022-04-15 06:17:10,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:17:10,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:17:10,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643446056] [2022-04-15 06:17:10,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643446056] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:17:10,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047926671] [2022-04-15 06:17:10,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:17:10,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:17:10,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:17:10,004 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:17:10,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-04-15 06:17:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:17:10,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:17:10,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:17:10,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:17:10,442 INFO L272 TraceCheckUtils]: 0: Hoare triple {14804#true} call ULTIMATE.init(); {14804#true} is VALID [2022-04-15 06:17:10,442 INFO L290 TraceCheckUtils]: 1: Hoare triple {14804#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {14804#true} is VALID [2022-04-15 06:17:10,442 INFO L290 TraceCheckUtils]: 2: Hoare triple {14804#true} assume true; {14804#true} is VALID [2022-04-15 06:17:10,442 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {14804#true} {14804#true} #56#return; {14804#true} is VALID [2022-04-15 06:17:10,443 INFO L272 TraceCheckUtils]: 4: Hoare triple {14804#true} call #t~ret1 := main(); {14804#true} is VALID [2022-04-15 06:17:10,443 INFO L290 TraceCheckUtils]: 5: Hoare triple {14804#true} ~x~0 := 0;~y~0 := 50; {14834#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:17:10,444 INFO L290 TraceCheckUtils]: 6: Hoare triple {14834#(and (<= main_~x~0 0) (= main_~y~0 50))} [186] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1070 v_main_~x~0_1069))) (or .cse0 (and (< v_main_~x~0_1069 51) (< v_main_~x~0_1070 v_main_~x~0_1069)) (and .cse0 (not (< v_main_~x~0_1070 50))))) InVars {main_~x~0=v_main_~x~0_1070} OutVars{main_~x~0=v_main_~x~0_1069} AuxVars[] AssignedVars[main_~x~0] {14838#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:17:10,444 INFO L290 TraceCheckUtils]: 7: Hoare triple {14838#(and (= main_~y~0 50) (< main_~x~0 51))} [187] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {14838#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:17:10,445 INFO L290 TraceCheckUtils]: 8: Hoare triple {14838#(and (= main_~y~0 50) (< main_~x~0 51))} [188] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_782 v_main_~y~0_781)) (.cse1 (<= 50 v_main_~x~0_1072))) (or (and .cse0 (= v_main_~x~0_1072 v_main_~x~0_1071)) (and .cse0 (or (not (< v_main_~x~0_1072 100)) (not .cse1)) (= v_main_~x~0_1071 v_main_~x~0_1072)) (and (= (+ v_main_~x~0_1072 v_main_~y~0_781) (+ v_main_~x~0_1071 v_main_~y~0_782)) .cse1 (< v_main_~x~0_1071 101) (< v_main_~x~0_1072 v_main_~x~0_1071)))) InVars {main_~x~0=v_main_~x~0_1072, main_~y~0=v_main_~y~0_782} OutVars{main_~x~0=v_main_~x~0_1071, main_~y~0=v_main_~y~0_781} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {14845#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:17:10,446 INFO L290 TraceCheckUtils]: 9: Hoare triple {14845#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [185] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {14812#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:17:10,446 INFO L272 TraceCheckUtils]: 10: Hoare triple {14812#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {14852#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:17:10,447 INFO L290 TraceCheckUtils]: 11: Hoare triple {14852#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {14856#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:17:10,447 INFO L290 TraceCheckUtils]: 12: Hoare triple {14856#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {14805#false} is VALID [2022-04-15 06:17:10,447 INFO L290 TraceCheckUtils]: 13: Hoare triple {14805#false} assume !false; {14805#false} is VALID [2022-04-15 06:17:10,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:17:10,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:17:10,986 INFO L290 TraceCheckUtils]: 13: Hoare triple {14805#false} assume !false; {14805#false} is VALID [2022-04-15 06:17:10,987 INFO L290 TraceCheckUtils]: 12: Hoare triple {14856#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {14805#false} is VALID [2022-04-15 06:17:10,987 INFO L290 TraceCheckUtils]: 11: Hoare triple {14852#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {14856#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:17:10,988 INFO L272 TraceCheckUtils]: 10: Hoare triple {14812#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {14852#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:17:10,989 INFO L290 TraceCheckUtils]: 9: Hoare triple {14875#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [185] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {14812#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:17:10,990 INFO L290 TraceCheckUtils]: 8: Hoare triple {14879#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [188] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_782 v_main_~y~0_781)) (.cse1 (<= 50 v_main_~x~0_1072))) (or (and .cse0 (= v_main_~x~0_1072 v_main_~x~0_1071)) (and .cse0 (or (not (< v_main_~x~0_1072 100)) (not .cse1)) (= v_main_~x~0_1071 v_main_~x~0_1072)) (and (= (+ v_main_~x~0_1072 v_main_~y~0_781) (+ v_main_~x~0_1071 v_main_~y~0_782)) .cse1 (< v_main_~x~0_1071 101) (< v_main_~x~0_1072 v_main_~x~0_1071)))) InVars {main_~x~0=v_main_~x~0_1072, main_~y~0=v_main_~y~0_782} OutVars{main_~x~0=v_main_~x~0_1071, main_~y~0=v_main_~y~0_781} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {14875#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:17:10,993 INFO L290 TraceCheckUtils]: 7: Hoare triple {14879#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [187] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {14879#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:17:10,994 INFO L290 TraceCheckUtils]: 6: Hoare triple {14886#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= 50 main_~y~0) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [186] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1070 v_main_~x~0_1069))) (or .cse0 (and (< v_main_~x~0_1069 51) (< v_main_~x~0_1070 v_main_~x~0_1069)) (and .cse0 (not (< v_main_~x~0_1070 50))))) InVars {main_~x~0=v_main_~x~0_1070} OutVars{main_~x~0=v_main_~x~0_1069} AuxVars[] AssignedVars[main_~x~0] {14879#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:17:10,995 INFO L290 TraceCheckUtils]: 5: Hoare triple {14804#true} ~x~0 := 0;~y~0 := 50; {14886#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= 50 main_~y~0) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:17:10,995 INFO L272 TraceCheckUtils]: 4: Hoare triple {14804#true} call #t~ret1 := main(); {14804#true} is VALID [2022-04-15 06:17:10,995 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {14804#true} {14804#true} #56#return; {14804#true} is VALID [2022-04-15 06:17:10,995 INFO L290 TraceCheckUtils]: 2: Hoare triple {14804#true} assume true; {14804#true} is VALID [2022-04-15 06:17:10,995 INFO L290 TraceCheckUtils]: 1: Hoare triple {14804#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {14804#true} is VALID [2022-04-15 06:17:10,995 INFO L272 TraceCheckUtils]: 0: Hoare triple {14804#true} call ULTIMATE.init(); {14804#true} is VALID [2022-04-15 06:17:10,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:17:10,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047926671] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:17:10,995 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:17:10,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:17:12,700 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:17:12,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [354645450] [2022-04-15 06:17:12,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [354645450] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:17:12,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:17:12,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-04-15 06:17:12,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687038301] [2022-04-15 06:17:12,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:17:12,701 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.8717948717948718) internal successors, (73), 38 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2022-04-15 06:17:12,702 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:17:12,702 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 40 states, 39 states have (on average 1.8717948717948718) internal successors, (73), 38 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:12,784 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 77 edges. 77 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:17:12,784 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-04-15 06:17:12,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:17:12,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-04-15 06:17:12,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=2237, Unknown=0, NotChecked=0, Total=2550 [2022-04-15 06:17:12,785 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand has 40 states, 39 states have (on average 1.8717948717948718) internal successors, (73), 38 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:18,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:17:18,785 INFO L93 Difference]: Finished difference Result 88 states and 93 transitions. [2022-04-15 06:17:18,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-04-15 06:17:18,785 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.8717948717948718) internal successors, (73), 38 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2022-04-15 06:17:18,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:17:18,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.8717948717948718) internal successors, (73), 38 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:18,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 93 transitions. [2022-04-15 06:17:18,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.8717948717948718) internal successors, (73), 38 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:18,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 93 transitions. [2022-04-15 06:17:18,794 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 37 states and 93 transitions. [2022-04-15 06:17:18,961 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 93 edges. 93 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:17:18,962 INFO L225 Difference]: With dead ends: 88 [2022-04-15 06:17:18,962 INFO L226 Difference]: Without dead ends: 81 [2022-04-15 06:17:18,963 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1461 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=625, Invalid=6515, Unknown=0, NotChecked=0, Total=7140 [2022-04-15 06:17:18,963 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 42 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 2704 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 2743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-04-15 06:17:18,964 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 193 Invalid, 2743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2704 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-04-15 06:17:18,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-04-15 06:17:19,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-04-15 06:17:19,218 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:17:19,218 INFO L82 GeneralOperation]: Start isEquivalent. First operand 81 states. Second operand has 81 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 76 states have internal predecessors, (79), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:19,218 INFO L74 IsIncluded]: Start isIncluded. First operand 81 states. Second operand has 81 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 76 states have internal predecessors, (79), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:19,218 INFO L87 Difference]: Start difference. First operand 81 states. Second operand has 81 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 76 states have internal predecessors, (79), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:19,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:17:19,219 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2022-04-15 06:17:19,219 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2022-04-15 06:17:19,220 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:17:19,220 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:17:19,220 INFO L74 IsIncluded]: Start isIncluded. First operand has 81 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 76 states have internal predecessors, (79), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 81 states. [2022-04-15 06:17:19,220 INFO L87 Difference]: Start difference. First operand has 81 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 76 states have internal predecessors, (79), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 81 states. [2022-04-15 06:17:19,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:17:19,221 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2022-04-15 06:17:19,221 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2022-04-15 06:17:19,221 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:17:19,221 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:17:19,221 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:17:19,221 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:17:19,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 76 states have internal predecessors, (79), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:19,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2022-04-15 06:17:19,231 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 77 [2022-04-15 06:17:19,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:17:19,231 INFO L478 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2022-04-15 06:17:19,231 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 1.8717948717948718) internal successors, (73), 38 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:19,232 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 81 states and 83 transitions. [2022-04-15 06:17:19,357 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 83 edges. 83 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:17:19,357 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2022-04-15 06:17:19,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-04-15 06:17:19,357 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:17:19,358 INFO L499 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:17:19,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-04-15 06:17:19,558 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:17:19,558 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:17:19,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:17:19,559 INFO L85 PathProgramCache]: Analyzing trace with hash 773196462, now seen corresponding path program 33 times [2022-04-15 06:17:19,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:17:19,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [89481891] [2022-04-15 06:17:21,700 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:17:21,994 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:17:21,996 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:17:21,998 INFO L85 PathProgramCache]: Analyzing trace with hash 121377484, now seen corresponding path program 1 times [2022-04-15 06:17:21,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:17:21,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980671475] [2022-04-15 06:17:21,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:17:21,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:17:22,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:17:22,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:17:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:17:22,183 INFO L290 TraceCheckUtils]: 0: Hoare triple {15520#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {15509#true} is VALID [2022-04-15 06:17:22,183 INFO L290 TraceCheckUtils]: 1: Hoare triple {15509#true} assume true; {15509#true} is VALID [2022-04-15 06:17:22,183 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {15509#true} {15509#true} #56#return; {15509#true} is VALID [2022-04-15 06:17:22,184 INFO L272 TraceCheckUtils]: 0: Hoare triple {15509#true} call ULTIMATE.init(); {15520#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:17:22,184 INFO L290 TraceCheckUtils]: 1: Hoare triple {15520#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {15509#true} is VALID [2022-04-15 06:17:22,184 INFO L290 TraceCheckUtils]: 2: Hoare triple {15509#true} assume true; {15509#true} is VALID [2022-04-15 06:17:22,184 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {15509#true} {15509#true} #56#return; {15509#true} is VALID [2022-04-15 06:17:22,184 INFO L272 TraceCheckUtils]: 4: Hoare triple {15509#true} call #t~ret1 := main(); {15509#true} is VALID [2022-04-15 06:17:22,185 INFO L290 TraceCheckUtils]: 5: Hoare triple {15509#true} ~x~0 := 0;~y~0 := 50; {15514#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:17:22,185 INFO L290 TraceCheckUtils]: 6: Hoare triple {15514#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [190] L28-2-->L27-2_primed: Formula: (or (= v_main_~x~0_1120 v_main_~x~0_1119) (and (= v_main_~x~0_1119 v_main_~x~0_1120) (not (< v_main_~x~0_1120 50))) (and (< v_main_~x~0_1120 v_main_~x~0_1119) (< v_main_~x~0_1119 51))) InVars {main_~x~0=v_main_~x~0_1120} OutVars{main_~x~0=v_main_~x~0_1119} AuxVars[] AssignedVars[main_~x~0] {15515#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:17:22,186 INFO L290 TraceCheckUtils]: 7: Hoare triple {15515#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [191] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {15515#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:17:22,187 INFO L290 TraceCheckUtils]: 8: Hoare triple {15515#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [192] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_823 v_main_~y~0_822)) (.cse2 (<= 50 v_main_~x~0_1122)) (.cse1 (= v_main_~x~0_1122 v_main_~x~0_1121))) (or (and .cse0 .cse1) (let ((.cse3 (+ v_main_~x~0_1122 v_main_~y~0_822))) (and (< v_main_~y~0_823 v_main_~y~0_822) .cse2 (< .cse3 (+ 101 v_main_~y~0_823)) (= .cse3 (+ v_main_~x~0_1121 v_main_~y~0_823)))) (and .cse0 (or (not .cse2) (not (< v_main_~x~0_1122 100))) .cse1))) InVars {main_~x~0=v_main_~x~0_1122, main_~y~0=v_main_~y~0_823} OutVars{main_~x~0=v_main_~x~0_1121, main_~y~0=v_main_~y~0_822} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {15516#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:17:22,188 INFO L290 TraceCheckUtils]: 9: Hoare triple {15516#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [189] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {15517#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:17:22,188 INFO L272 TraceCheckUtils]: 10: Hoare triple {15517#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {15518#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:17:22,189 INFO L290 TraceCheckUtils]: 11: Hoare triple {15518#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {15519#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:17:22,189 INFO L290 TraceCheckUtils]: 12: Hoare triple {15519#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {15510#false} is VALID [2022-04-15 06:17:22,189 INFO L290 TraceCheckUtils]: 13: Hoare triple {15510#false} assume !false; {15510#false} is VALID [2022-04-15 06:17:22,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:17:22,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:17:22,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980671475] [2022-04-15 06:17:22,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980671475] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:17:22,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004783058] [2022-04-15 06:17:22,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:17:22,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:17:22,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:17:22,200 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:17:22,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-04-15 06:17:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:17:22,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:17:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:17:22,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:17:22,603 INFO L272 TraceCheckUtils]: 0: Hoare triple {15509#true} call ULTIMATE.init(); {15509#true} is VALID [2022-04-15 06:17:22,603 INFO L290 TraceCheckUtils]: 1: Hoare triple {15509#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {15509#true} is VALID [2022-04-15 06:17:22,604 INFO L290 TraceCheckUtils]: 2: Hoare triple {15509#true} assume true; {15509#true} is VALID [2022-04-15 06:17:22,604 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {15509#true} {15509#true} #56#return; {15509#true} is VALID [2022-04-15 06:17:22,604 INFO L272 TraceCheckUtils]: 4: Hoare triple {15509#true} call #t~ret1 := main(); {15509#true} is VALID [2022-04-15 06:17:22,604 INFO L290 TraceCheckUtils]: 5: Hoare triple {15509#true} ~x~0 := 0;~y~0 := 50; {15539#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:17:22,605 INFO L290 TraceCheckUtils]: 6: Hoare triple {15539#(and (<= main_~x~0 0) (= main_~y~0 50))} [190] L28-2-->L27-2_primed: Formula: (or (= v_main_~x~0_1120 v_main_~x~0_1119) (and (= v_main_~x~0_1119 v_main_~x~0_1120) (not (< v_main_~x~0_1120 50))) (and (< v_main_~x~0_1120 v_main_~x~0_1119) (< v_main_~x~0_1119 51))) InVars {main_~x~0=v_main_~x~0_1120} OutVars{main_~x~0=v_main_~x~0_1119} AuxVars[] AssignedVars[main_~x~0] {15543#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:17:22,605 INFO L290 TraceCheckUtils]: 7: Hoare triple {15543#(and (= main_~y~0 50) (< main_~x~0 51))} [191] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {15543#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:17:22,606 INFO L290 TraceCheckUtils]: 8: Hoare triple {15543#(and (= main_~y~0 50) (< main_~x~0 51))} [192] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_823 v_main_~y~0_822)) (.cse2 (<= 50 v_main_~x~0_1122)) (.cse1 (= v_main_~x~0_1122 v_main_~x~0_1121))) (or (and .cse0 .cse1) (let ((.cse3 (+ v_main_~x~0_1122 v_main_~y~0_822))) (and (< v_main_~y~0_823 v_main_~y~0_822) .cse2 (< .cse3 (+ 101 v_main_~y~0_823)) (= .cse3 (+ v_main_~x~0_1121 v_main_~y~0_823)))) (and .cse0 (or (not .cse2) (not (< v_main_~x~0_1122 100))) .cse1))) InVars {main_~x~0=v_main_~x~0_1122, main_~y~0=v_main_~y~0_823} OutVars{main_~x~0=v_main_~x~0_1121, main_~y~0=v_main_~y~0_822} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {15550#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:17:22,607 INFO L290 TraceCheckUtils]: 9: Hoare triple {15550#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [189] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {15517#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:17:22,608 INFO L272 TraceCheckUtils]: 10: Hoare triple {15517#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {15557#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:17:22,608 INFO L290 TraceCheckUtils]: 11: Hoare triple {15557#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {15561#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:17:22,608 INFO L290 TraceCheckUtils]: 12: Hoare triple {15561#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {15510#false} is VALID [2022-04-15 06:17:22,608 INFO L290 TraceCheckUtils]: 13: Hoare triple {15510#false} assume !false; {15510#false} is VALID [2022-04-15 06:17:22,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:17:22,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:17:23,147 INFO L290 TraceCheckUtils]: 13: Hoare triple {15510#false} assume !false; {15510#false} is VALID [2022-04-15 06:17:23,147 INFO L290 TraceCheckUtils]: 12: Hoare triple {15561#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {15510#false} is VALID [2022-04-15 06:17:23,148 INFO L290 TraceCheckUtils]: 11: Hoare triple {15557#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {15561#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:17:23,149 INFO L272 TraceCheckUtils]: 10: Hoare triple {15517#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {15557#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:17:23,149 INFO L290 TraceCheckUtils]: 9: Hoare triple {15580#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [189] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {15517#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:17:23,151 INFO L290 TraceCheckUtils]: 8: Hoare triple {15584#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [192] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_823 v_main_~y~0_822)) (.cse2 (<= 50 v_main_~x~0_1122)) (.cse1 (= v_main_~x~0_1122 v_main_~x~0_1121))) (or (and .cse0 .cse1) (let ((.cse3 (+ v_main_~x~0_1122 v_main_~y~0_822))) (and (< v_main_~y~0_823 v_main_~y~0_822) .cse2 (< .cse3 (+ 101 v_main_~y~0_823)) (= .cse3 (+ v_main_~x~0_1121 v_main_~y~0_823)))) (and .cse0 (or (not .cse2) (not (< v_main_~x~0_1122 100))) .cse1))) InVars {main_~x~0=v_main_~x~0_1122, main_~y~0=v_main_~y~0_823} OutVars{main_~x~0=v_main_~x~0_1121, main_~y~0=v_main_~y~0_822} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {15580#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:17:23,151 INFO L290 TraceCheckUtils]: 7: Hoare triple {15584#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [191] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {15584#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:17:23,152 INFO L290 TraceCheckUtils]: 6: Hoare triple {15591#(and (<= 50 main_~y~0) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [190] L28-2-->L27-2_primed: Formula: (or (= v_main_~x~0_1120 v_main_~x~0_1119) (and (= v_main_~x~0_1119 v_main_~x~0_1120) (not (< v_main_~x~0_1120 50))) (and (< v_main_~x~0_1120 v_main_~x~0_1119) (< v_main_~x~0_1119 51))) InVars {main_~x~0=v_main_~x~0_1120} OutVars{main_~x~0=v_main_~x~0_1119} AuxVars[] AssignedVars[main_~x~0] {15584#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:17:23,153 INFO L290 TraceCheckUtils]: 5: Hoare triple {15509#true} ~x~0 := 0;~y~0 := 50; {15591#(and (<= 50 main_~y~0) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:17:23,153 INFO L272 TraceCheckUtils]: 4: Hoare triple {15509#true} call #t~ret1 := main(); {15509#true} is VALID [2022-04-15 06:17:23,153 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {15509#true} {15509#true} #56#return; {15509#true} is VALID [2022-04-15 06:17:23,153 INFO L290 TraceCheckUtils]: 2: Hoare triple {15509#true} assume true; {15509#true} is VALID [2022-04-15 06:17:23,153 INFO L290 TraceCheckUtils]: 1: Hoare triple {15509#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {15509#true} is VALID [2022-04-15 06:17:23,154 INFO L272 TraceCheckUtils]: 0: Hoare triple {15509#true} call ULTIMATE.init(); {15509#true} is VALID [2022-04-15 06:17:23,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:17:23,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004783058] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:17:23,154 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:17:23,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:17:24,947 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:17:24,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [89481891] [2022-04-15 06:17:24,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [89481891] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:17:24,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:17:24,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-04-15 06:17:24,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601573540] [2022-04-15 06:17:24,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:17:24,948 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.875) internal successors, (75), 39 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2022-04-15 06:17:24,948 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:17:24,948 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 41 states, 40 states have (on average 1.875) internal successors, (75), 39 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:25,019 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 79 edges. 79 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:17:25,019 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-04-15 06:17:25,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:17:25,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-04-15 06:17:25,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=2332, Unknown=0, NotChecked=0, Total=2652 [2022-04-15 06:17:25,020 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand has 41 states, 40 states have (on average 1.875) internal successors, (75), 39 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:31,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:17:31,198 INFO L93 Difference]: Finished difference Result 90 states and 95 transitions. [2022-04-15 06:17:31,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-04-15 06:17:31,199 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.875) internal successors, (75), 39 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2022-04-15 06:17:31,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:17:31,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.875) internal successors, (75), 39 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:31,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 95 transitions. [2022-04-15 06:17:31,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.875) internal successors, (75), 39 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:31,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 95 transitions. [2022-04-15 06:17:31,201 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 38 states and 95 transitions. [2022-04-15 06:17:31,301 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 95 edges. 95 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:17:31,302 INFO L225 Difference]: With dead ends: 90 [2022-04-15 06:17:31,302 INFO L226 Difference]: Without dead ends: 83 [2022-04-15 06:17:31,303 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1519 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=641, Invalid=6841, Unknown=0, NotChecked=0, Total=7482 [2022-04-15 06:17:31,303 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 43 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 2853 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 2893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-04-15 06:17:31,304 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 198 Invalid, 2893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2853 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-04-15 06:17:31,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-04-15 06:17:31,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-04-15 06:17:31,449 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:17:31,449 INFO L82 GeneralOperation]: Start isEquivalent. First operand 83 states. Second operand has 83 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 78 states have internal predecessors, (81), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:31,449 INFO L74 IsIncluded]: Start isIncluded. First operand 83 states. Second operand has 83 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 78 states have internal predecessors, (81), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:31,449 INFO L87 Difference]: Start difference. First operand 83 states. Second operand has 83 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 78 states have internal predecessors, (81), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:31,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:17:31,450 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2022-04-15 06:17:31,451 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2022-04-15 06:17:31,451 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:17:31,451 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:17:31,451 INFO L74 IsIncluded]: Start isIncluded. First operand has 83 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 78 states have internal predecessors, (81), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 83 states. [2022-04-15 06:17:31,451 INFO L87 Difference]: Start difference. First operand has 83 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 78 states have internal predecessors, (81), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 83 states. [2022-04-15 06:17:31,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:17:31,452 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2022-04-15 06:17:31,452 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2022-04-15 06:17:31,452 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:17:31,452 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:17:31,452 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:17:31,452 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:17:31,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 78 states have internal predecessors, (81), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:31,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2022-04-15 06:17:31,454 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 79 [2022-04-15 06:17:31,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:17:31,454 INFO L478 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2022-04-15 06:17:31,454 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.875) internal successors, (75), 39 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:31,454 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 83 states and 85 transitions. [2022-04-15 06:17:31,534 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 85 edges. 85 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:17:31,534 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2022-04-15 06:17:31,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-04-15 06:17:31,534 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:17:31,535 INFO L499 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:17:31,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-04-15 06:17:31,735 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-04-15 06:17:31,735 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:17:31,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:17:31,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1082130057, now seen corresponding path program 34 times [2022-04-15 06:17:31,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:17:31,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [762134650] [2022-04-15 06:17:31,842 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:17:32,091 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:17:32,093 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:17:32,095 INFO L85 PathProgramCache]: Analyzing trace with hash -2124057652, now seen corresponding path program 1 times [2022-04-15 06:17:32,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:17:32,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139417881] [2022-04-15 06:17:32,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:17:32,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:17:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:17:32,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:17:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:17:32,206 INFO L290 TraceCheckUtils]: 0: Hoare triple {16240#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {16229#true} is VALID [2022-04-15 06:17:32,207 INFO L290 TraceCheckUtils]: 1: Hoare triple {16229#true} assume true; {16229#true} is VALID [2022-04-15 06:17:32,207 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {16229#true} {16229#true} #56#return; {16229#true} is VALID [2022-04-15 06:17:32,207 INFO L272 TraceCheckUtils]: 0: Hoare triple {16229#true} call ULTIMATE.init(); {16240#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:17:32,207 INFO L290 TraceCheckUtils]: 1: Hoare triple {16240#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {16229#true} is VALID [2022-04-15 06:17:32,207 INFO L290 TraceCheckUtils]: 2: Hoare triple {16229#true} assume true; {16229#true} is VALID [2022-04-15 06:17:32,207 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {16229#true} {16229#true} #56#return; {16229#true} is VALID [2022-04-15 06:17:32,208 INFO L272 TraceCheckUtils]: 4: Hoare triple {16229#true} call #t~ret1 := main(); {16229#true} is VALID [2022-04-15 06:17:32,208 INFO L290 TraceCheckUtils]: 5: Hoare triple {16229#true} ~x~0 := 0;~y~0 := 50; {16234#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:17:32,209 INFO L290 TraceCheckUtils]: 6: Hoare triple {16234#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [194] L28-2-->L27-2_primed: Formula: (or (and (< v_main_~x~0_1171 v_main_~x~0_1170) (< v_main_~x~0_1170 51)) (and (= v_main_~x~0_1170 v_main_~x~0_1171) (not (< v_main_~x~0_1171 50))) (= v_main_~x~0_1171 v_main_~x~0_1170)) InVars {main_~x~0=v_main_~x~0_1171} OutVars{main_~x~0=v_main_~x~0_1170} AuxVars[] AssignedVars[main_~x~0] {16235#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:17:32,209 INFO L290 TraceCheckUtils]: 7: Hoare triple {16235#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [195] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {16235#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:17:32,210 INFO L290 TraceCheckUtils]: 8: Hoare triple {16235#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [196] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_865 v_main_~y~0_864)) (.cse1 (= v_main_~x~0_1173 v_main_~x~0_1172)) (.cse2 (<= 50 v_main_~x~0_1173))) (or (and .cse0 .cse1) (and .cse0 (or (not .cse2) (not (< v_main_~x~0_1173 100))) .cse1) (and (= (+ v_main_~x~0_1173 v_main_~y~0_864) (+ v_main_~x~0_1172 v_main_~y~0_865)) .cse2 (< v_main_~x~0_1172 101) (< v_main_~x~0_1173 v_main_~x~0_1172)))) InVars {main_~x~0=v_main_~x~0_1173, main_~y~0=v_main_~y~0_865} OutVars{main_~x~0=v_main_~x~0_1172, main_~y~0=v_main_~y~0_864} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {16236#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:17:32,211 INFO L290 TraceCheckUtils]: 9: Hoare triple {16236#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [193] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {16237#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:17:32,212 INFO L272 TraceCheckUtils]: 10: Hoare triple {16237#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {16238#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:17:32,212 INFO L290 TraceCheckUtils]: 11: Hoare triple {16238#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {16239#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:17:32,212 INFO L290 TraceCheckUtils]: 12: Hoare triple {16239#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {16230#false} is VALID [2022-04-15 06:17:32,212 INFO L290 TraceCheckUtils]: 13: Hoare triple {16230#false} assume !false; {16230#false} is VALID [2022-04-15 06:17:32,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:17:32,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:17:32,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139417881] [2022-04-15 06:17:32,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139417881] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:17:32,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188549376] [2022-04-15 06:17:32,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:17:32,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:17:32,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:17:32,214 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:17:32,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-04-15 06:17:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:17:32,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:17:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:17:32,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:17:32,603 INFO L272 TraceCheckUtils]: 0: Hoare triple {16229#true} call ULTIMATE.init(); {16229#true} is VALID [2022-04-15 06:17:32,603 INFO L290 TraceCheckUtils]: 1: Hoare triple {16229#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {16229#true} is VALID [2022-04-15 06:17:32,604 INFO L290 TraceCheckUtils]: 2: Hoare triple {16229#true} assume true; {16229#true} is VALID [2022-04-15 06:17:32,604 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {16229#true} {16229#true} #56#return; {16229#true} is VALID [2022-04-15 06:17:32,604 INFO L272 TraceCheckUtils]: 4: Hoare triple {16229#true} call #t~ret1 := main(); {16229#true} is VALID [2022-04-15 06:17:32,604 INFO L290 TraceCheckUtils]: 5: Hoare triple {16229#true} ~x~0 := 0;~y~0 := 50; {16259#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:17:32,605 INFO L290 TraceCheckUtils]: 6: Hoare triple {16259#(and (<= main_~x~0 0) (= main_~y~0 50))} [194] L28-2-->L27-2_primed: Formula: (or (and (< v_main_~x~0_1171 v_main_~x~0_1170) (< v_main_~x~0_1170 51)) (and (= v_main_~x~0_1170 v_main_~x~0_1171) (not (< v_main_~x~0_1171 50))) (= v_main_~x~0_1171 v_main_~x~0_1170)) InVars {main_~x~0=v_main_~x~0_1171} OutVars{main_~x~0=v_main_~x~0_1170} AuxVars[] AssignedVars[main_~x~0] {16263#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:17:32,605 INFO L290 TraceCheckUtils]: 7: Hoare triple {16263#(and (= main_~y~0 50) (< main_~x~0 51))} [195] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {16263#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:17:32,606 INFO L290 TraceCheckUtils]: 8: Hoare triple {16263#(and (= main_~y~0 50) (< main_~x~0 51))} [196] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_865 v_main_~y~0_864)) (.cse1 (= v_main_~x~0_1173 v_main_~x~0_1172)) (.cse2 (<= 50 v_main_~x~0_1173))) (or (and .cse0 .cse1) (and .cse0 (or (not .cse2) (not (< v_main_~x~0_1173 100))) .cse1) (and (= (+ v_main_~x~0_1173 v_main_~y~0_864) (+ v_main_~x~0_1172 v_main_~y~0_865)) .cse2 (< v_main_~x~0_1172 101) (< v_main_~x~0_1173 v_main_~x~0_1172)))) InVars {main_~x~0=v_main_~x~0_1173, main_~y~0=v_main_~y~0_865} OutVars{main_~x~0=v_main_~x~0_1172, main_~y~0=v_main_~y~0_864} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {16270#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:17:32,607 INFO L290 TraceCheckUtils]: 9: Hoare triple {16270#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [193] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {16237#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:17:32,608 INFO L272 TraceCheckUtils]: 10: Hoare triple {16237#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {16277#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:17:32,608 INFO L290 TraceCheckUtils]: 11: Hoare triple {16277#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {16281#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:17:32,609 INFO L290 TraceCheckUtils]: 12: Hoare triple {16281#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {16230#false} is VALID [2022-04-15 06:17:32,609 INFO L290 TraceCheckUtils]: 13: Hoare triple {16230#false} assume !false; {16230#false} is VALID [2022-04-15 06:17:32,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:17:32,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:17:33,140 INFO L290 TraceCheckUtils]: 13: Hoare triple {16230#false} assume !false; {16230#false} is VALID [2022-04-15 06:17:33,141 INFO L290 TraceCheckUtils]: 12: Hoare triple {16281#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {16230#false} is VALID [2022-04-15 06:17:33,141 INFO L290 TraceCheckUtils]: 11: Hoare triple {16277#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {16281#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:17:33,142 INFO L272 TraceCheckUtils]: 10: Hoare triple {16237#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {16277#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:17:33,143 INFO L290 TraceCheckUtils]: 9: Hoare triple {16300#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [193] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {16237#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:17:33,144 INFO L290 TraceCheckUtils]: 8: Hoare triple {16304#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [196] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_865 v_main_~y~0_864)) (.cse1 (= v_main_~x~0_1173 v_main_~x~0_1172)) (.cse2 (<= 50 v_main_~x~0_1173))) (or (and .cse0 .cse1) (and .cse0 (or (not .cse2) (not (< v_main_~x~0_1173 100))) .cse1) (and (= (+ v_main_~x~0_1173 v_main_~y~0_864) (+ v_main_~x~0_1172 v_main_~y~0_865)) .cse2 (< v_main_~x~0_1172 101) (< v_main_~x~0_1173 v_main_~x~0_1172)))) InVars {main_~x~0=v_main_~x~0_1173, main_~y~0=v_main_~y~0_865} OutVars{main_~x~0=v_main_~x~0_1172, main_~y~0=v_main_~y~0_864} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {16300#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:17:33,144 INFO L290 TraceCheckUtils]: 7: Hoare triple {16304#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [195] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {16304#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:17:33,145 INFO L290 TraceCheckUtils]: 6: Hoare triple {16311#(and (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)) (or (and (< main_~x~0 (+ main_~y~0 1)) (<= 50 main_~y~0)) (<= 99 main_~y~0)))} [194] L28-2-->L27-2_primed: Formula: (or (and (< v_main_~x~0_1171 v_main_~x~0_1170) (< v_main_~x~0_1170 51)) (and (= v_main_~x~0_1170 v_main_~x~0_1171) (not (< v_main_~x~0_1171 50))) (= v_main_~x~0_1171 v_main_~x~0_1170)) InVars {main_~x~0=v_main_~x~0_1171} OutVars{main_~x~0=v_main_~x~0_1170} AuxVars[] AssignedVars[main_~x~0] {16304#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:17:33,146 INFO L290 TraceCheckUtils]: 5: Hoare triple {16229#true} ~x~0 := 0;~y~0 := 50; {16311#(and (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)) (or (and (< main_~x~0 (+ main_~y~0 1)) (<= 50 main_~y~0)) (<= 99 main_~y~0)))} is VALID [2022-04-15 06:17:33,146 INFO L272 TraceCheckUtils]: 4: Hoare triple {16229#true} call #t~ret1 := main(); {16229#true} is VALID [2022-04-15 06:17:33,146 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {16229#true} {16229#true} #56#return; {16229#true} is VALID [2022-04-15 06:17:33,146 INFO L290 TraceCheckUtils]: 2: Hoare triple {16229#true} assume true; {16229#true} is VALID [2022-04-15 06:17:33,146 INFO L290 TraceCheckUtils]: 1: Hoare triple {16229#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {16229#true} is VALID [2022-04-15 06:17:33,146 INFO L272 TraceCheckUtils]: 0: Hoare triple {16229#true} call ULTIMATE.init(); {16229#true} is VALID [2022-04-15 06:17:33,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:17:33,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188549376] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:17:33,147 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:17:33,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:17:34,971 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:17:34,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [762134650] [2022-04-15 06:17:34,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [762134650] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:17:34,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:17:34,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-04-15 06:17:34,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411369997] [2022-04-15 06:17:34,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:17:34,972 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.8780487804878048) internal successors, (77), 40 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2022-04-15 06:17:34,972 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:17:34,973 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 42 states, 41 states have (on average 1.8780487804878048) internal successors, (77), 40 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:35,042 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 81 edges. 81 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:17:35,042 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-04-15 06:17:35,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:17:35,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-04-15 06:17:35,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=2429, Unknown=0, NotChecked=0, Total=2756 [2022-04-15 06:17:35,043 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand has 42 states, 41 states have (on average 1.8780487804878048) internal successors, (77), 40 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:41,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:17:41,562 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2022-04-15 06:17:41,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-04-15 06:17:41,563 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.8780487804878048) internal successors, (77), 40 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2022-04-15 06:17:41,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:17:41,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.8780487804878048) internal successors, (77), 40 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:41,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 97 transitions. [2022-04-15 06:17:41,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.8780487804878048) internal successors, (77), 40 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:41,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 97 transitions. [2022-04-15 06:17:41,565 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 39 states and 97 transitions. [2022-04-15 06:17:41,661 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 97 edges. 97 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:17:41,662 INFO L225 Difference]: With dead ends: 92 [2022-04-15 06:17:41,662 INFO L226 Difference]: Without dead ends: 85 [2022-04-15 06:17:41,663 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1578 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=657, Invalid=7175, Unknown=0, NotChecked=0, Total=7832 [2022-04-15 06:17:41,663 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 44 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 3006 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 3047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-04-15 06:17:41,663 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 203 Invalid, 3047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3006 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-04-15 06:17:41,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-04-15 06:17:41,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-04-15 06:17:41,814 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:17:41,814 INFO L82 GeneralOperation]: Start isEquivalent. First operand 85 states. Second operand has 85 states, 80 states have (on average 1.0375) internal successors, (83), 80 states have internal predecessors, (83), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:41,814 INFO L74 IsIncluded]: Start isIncluded. First operand 85 states. Second operand has 85 states, 80 states have (on average 1.0375) internal successors, (83), 80 states have internal predecessors, (83), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:41,814 INFO L87 Difference]: Start difference. First operand 85 states. Second operand has 85 states, 80 states have (on average 1.0375) internal successors, (83), 80 states have internal predecessors, (83), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:41,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:17:41,815 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2022-04-15 06:17:41,816 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2022-04-15 06:17:41,816 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:17:41,816 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:17:41,816 INFO L74 IsIncluded]: Start isIncluded. First operand has 85 states, 80 states have (on average 1.0375) internal successors, (83), 80 states have internal predecessors, (83), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 85 states. [2022-04-15 06:17:41,816 INFO L87 Difference]: Start difference. First operand has 85 states, 80 states have (on average 1.0375) internal successors, (83), 80 states have internal predecessors, (83), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 85 states. [2022-04-15 06:17:41,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:17:41,817 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2022-04-15 06:17:41,817 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2022-04-15 06:17:41,817 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:17:41,817 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:17:41,817 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:17:41,818 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:17:41,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 80 states have (on average 1.0375) internal successors, (83), 80 states have internal predecessors, (83), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:41,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2022-04-15 06:17:41,819 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 81 [2022-04-15 06:17:41,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:17:41,819 INFO L478 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2022-04-15 06:17:41,819 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.8780487804878048) internal successors, (77), 40 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:41,819 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 85 states and 87 transitions. [2022-04-15 06:17:41,905 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 87 edges. 87 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:17:41,905 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2022-04-15 06:17:41,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-04-15 06:17:41,906 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:17:41,906 INFO L499 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:17:41,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-04-15 06:17:42,106 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-04-15 06:17:42,106 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:17:42,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:17:42,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1614571428, now seen corresponding path program 35 times [2022-04-15 06:17:42,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:17:42,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1985147339] [2022-04-15 06:17:42,244 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:17:44,494 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-15 06:17:44,615 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:17:44,617 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:17:44,620 INFO L85 PathProgramCache]: Analyzing trace with hash -74525492, now seen corresponding path program 1 times [2022-04-15 06:17:44,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:17:44,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161452542] [2022-04-15 06:17:44,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:17:44,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:17:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:17:44,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:17:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:17:44,730 INFO L290 TraceCheckUtils]: 0: Hoare triple {16975#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {16964#true} is VALID [2022-04-15 06:17:44,730 INFO L290 TraceCheckUtils]: 1: Hoare triple {16964#true} assume true; {16964#true} is VALID [2022-04-15 06:17:44,730 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {16964#true} {16964#true} #56#return; {16964#true} is VALID [2022-04-15 06:17:44,731 INFO L272 TraceCheckUtils]: 0: Hoare triple {16964#true} call ULTIMATE.init(); {16975#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:17:44,731 INFO L290 TraceCheckUtils]: 1: Hoare triple {16975#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {16964#true} is VALID [2022-04-15 06:17:44,731 INFO L290 TraceCheckUtils]: 2: Hoare triple {16964#true} assume true; {16964#true} is VALID [2022-04-15 06:17:44,731 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {16964#true} {16964#true} #56#return; {16964#true} is VALID [2022-04-15 06:17:44,731 INFO L272 TraceCheckUtils]: 4: Hoare triple {16964#true} call #t~ret1 := main(); {16964#true} is VALID [2022-04-15 06:17:44,731 INFO L290 TraceCheckUtils]: 5: Hoare triple {16964#true} ~x~0 := 0;~y~0 := 50; {16969#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:17:44,732 INFO L290 TraceCheckUtils]: 6: Hoare triple {16969#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [198] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1223 v_main_~x~0_1222))) (or (and (< v_main_~x~0_1223 v_main_~x~0_1222) (< v_main_~x~0_1222 51)) (and .cse0 (<= 50 v_main_~x~0_1223)) .cse0)) InVars {main_~x~0=v_main_~x~0_1223} OutVars{main_~x~0=v_main_~x~0_1222} AuxVars[] AssignedVars[main_~x~0] {16970#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:17:44,733 INFO L290 TraceCheckUtils]: 7: Hoare triple {16970#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [199] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {16970#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:17:44,734 INFO L290 TraceCheckUtils]: 8: Hoare triple {16970#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [200] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1225 v_main_~x~0_1224)) (.cse1 (= v_main_~y~0_908 v_main_~y~0_907)) (.cse2 (<= 50 v_main_~x~0_1225))) (or (and .cse0 .cse1) (let ((.cse3 (+ v_main_~x~0_1225 v_main_~y~0_907))) (and .cse2 (< .cse3 (+ 101 v_main_~y~0_908)) (< v_main_~y~0_908 v_main_~y~0_907) (= .cse3 (+ v_main_~x~0_1224 v_main_~y~0_908)))) (and .cse0 .cse1 (or (not .cse2) (not (< v_main_~x~0_1225 100)))))) InVars {main_~x~0=v_main_~x~0_1225, main_~y~0=v_main_~y~0_908} OutVars{main_~x~0=v_main_~x~0_1224, main_~y~0=v_main_~y~0_907} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {16971#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:17:44,734 INFO L290 TraceCheckUtils]: 9: Hoare triple {16971#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [197] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {16972#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:17:44,735 INFO L272 TraceCheckUtils]: 10: Hoare triple {16972#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {16973#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:17:44,735 INFO L290 TraceCheckUtils]: 11: Hoare triple {16973#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {16974#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:17:44,736 INFO L290 TraceCheckUtils]: 12: Hoare triple {16974#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {16965#false} is VALID [2022-04-15 06:17:44,736 INFO L290 TraceCheckUtils]: 13: Hoare triple {16965#false} assume !false; {16965#false} is VALID [2022-04-15 06:17:44,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:17:44,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:17:44,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161452542] [2022-04-15 06:17:44,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161452542] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:17:44,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992921940] [2022-04-15 06:17:44,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:17:44,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:17:44,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:17:44,741 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:17:44,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-04-15 06:17:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:17:44,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:17:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:17:44,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:17:45,131 INFO L272 TraceCheckUtils]: 0: Hoare triple {16964#true} call ULTIMATE.init(); {16964#true} is VALID [2022-04-15 06:17:45,132 INFO L290 TraceCheckUtils]: 1: Hoare triple {16964#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {16964#true} is VALID [2022-04-15 06:17:45,132 INFO L290 TraceCheckUtils]: 2: Hoare triple {16964#true} assume true; {16964#true} is VALID [2022-04-15 06:17:45,132 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {16964#true} {16964#true} #56#return; {16964#true} is VALID [2022-04-15 06:17:45,132 INFO L272 TraceCheckUtils]: 4: Hoare triple {16964#true} call #t~ret1 := main(); {16964#true} is VALID [2022-04-15 06:17:45,132 INFO L290 TraceCheckUtils]: 5: Hoare triple {16964#true} ~x~0 := 0;~y~0 := 50; {16994#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:17:45,133 INFO L290 TraceCheckUtils]: 6: Hoare triple {16994#(and (<= main_~x~0 0) (= main_~y~0 50))} [198] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1223 v_main_~x~0_1222))) (or (and (< v_main_~x~0_1223 v_main_~x~0_1222) (< v_main_~x~0_1222 51)) (and .cse0 (<= 50 v_main_~x~0_1223)) .cse0)) InVars {main_~x~0=v_main_~x~0_1223} OutVars{main_~x~0=v_main_~x~0_1222} AuxVars[] AssignedVars[main_~x~0] {16998#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:17:45,133 INFO L290 TraceCheckUtils]: 7: Hoare triple {16998#(and (= main_~y~0 50) (< main_~x~0 51))} [199] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {16998#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:17:45,135 INFO L290 TraceCheckUtils]: 8: Hoare triple {16998#(and (= main_~y~0 50) (< main_~x~0 51))} [200] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1225 v_main_~x~0_1224)) (.cse1 (= v_main_~y~0_908 v_main_~y~0_907)) (.cse2 (<= 50 v_main_~x~0_1225))) (or (and .cse0 .cse1) (let ((.cse3 (+ v_main_~x~0_1225 v_main_~y~0_907))) (and .cse2 (< .cse3 (+ 101 v_main_~y~0_908)) (< v_main_~y~0_908 v_main_~y~0_907) (= .cse3 (+ v_main_~x~0_1224 v_main_~y~0_908)))) (and .cse0 .cse1 (or (not .cse2) (not (< v_main_~x~0_1225 100)))))) InVars {main_~x~0=v_main_~x~0_1225, main_~y~0=v_main_~y~0_908} OutVars{main_~x~0=v_main_~x~0_1224, main_~y~0=v_main_~y~0_907} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {17005#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:17:45,135 INFO L290 TraceCheckUtils]: 9: Hoare triple {17005#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [197] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {16972#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:17:45,136 INFO L272 TraceCheckUtils]: 10: Hoare triple {16972#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {17012#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:17:45,136 INFO L290 TraceCheckUtils]: 11: Hoare triple {17012#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {17016#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:17:45,137 INFO L290 TraceCheckUtils]: 12: Hoare triple {17016#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {16965#false} is VALID [2022-04-15 06:17:45,137 INFO L290 TraceCheckUtils]: 13: Hoare triple {16965#false} assume !false; {16965#false} is VALID [2022-04-15 06:17:45,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:17:45,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:17:45,689 INFO L290 TraceCheckUtils]: 13: Hoare triple {16965#false} assume !false; {16965#false} is VALID [2022-04-15 06:17:45,690 INFO L290 TraceCheckUtils]: 12: Hoare triple {17016#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {16965#false} is VALID [2022-04-15 06:17:45,690 INFO L290 TraceCheckUtils]: 11: Hoare triple {17012#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {17016#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:17:45,691 INFO L272 TraceCheckUtils]: 10: Hoare triple {16972#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {17012#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:17:45,692 INFO L290 TraceCheckUtils]: 9: Hoare triple {17035#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [197] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {16972#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:17:45,693 INFO L290 TraceCheckUtils]: 8: Hoare triple {17039#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [200] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1225 v_main_~x~0_1224)) (.cse1 (= v_main_~y~0_908 v_main_~y~0_907)) (.cse2 (<= 50 v_main_~x~0_1225))) (or (and .cse0 .cse1) (let ((.cse3 (+ v_main_~x~0_1225 v_main_~y~0_907))) (and .cse2 (< .cse3 (+ 101 v_main_~y~0_908)) (< v_main_~y~0_908 v_main_~y~0_907) (= .cse3 (+ v_main_~x~0_1224 v_main_~y~0_908)))) (and .cse0 .cse1 (or (not .cse2) (not (< v_main_~x~0_1225 100)))))) InVars {main_~x~0=v_main_~x~0_1225, main_~y~0=v_main_~y~0_908} OutVars{main_~x~0=v_main_~x~0_1224, main_~y~0=v_main_~y~0_907} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {17035#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:17:45,693 INFO L290 TraceCheckUtils]: 7: Hoare triple {17039#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [199] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {17039#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:17:45,695 INFO L290 TraceCheckUtils]: 6: Hoare triple {17046#(and (<= 50 main_~y~0) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [198] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1223 v_main_~x~0_1222))) (or (and (< v_main_~x~0_1223 v_main_~x~0_1222) (< v_main_~x~0_1222 51)) (and .cse0 (<= 50 v_main_~x~0_1223)) .cse0)) InVars {main_~x~0=v_main_~x~0_1223} OutVars{main_~x~0=v_main_~x~0_1222} AuxVars[] AssignedVars[main_~x~0] {17039#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:17:45,695 INFO L290 TraceCheckUtils]: 5: Hoare triple {16964#true} ~x~0 := 0;~y~0 := 50; {17046#(and (<= 50 main_~y~0) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:17:45,695 INFO L272 TraceCheckUtils]: 4: Hoare triple {16964#true} call #t~ret1 := main(); {16964#true} is VALID [2022-04-15 06:17:45,695 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {16964#true} {16964#true} #56#return; {16964#true} is VALID [2022-04-15 06:17:45,695 INFO L290 TraceCheckUtils]: 2: Hoare triple {16964#true} assume true; {16964#true} is VALID [2022-04-15 06:17:45,696 INFO L290 TraceCheckUtils]: 1: Hoare triple {16964#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {16964#true} is VALID [2022-04-15 06:17:45,696 INFO L272 TraceCheckUtils]: 0: Hoare triple {16964#true} call ULTIMATE.init(); {16964#true} is VALID [2022-04-15 06:17:45,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:17:45,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992921940] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:17:45,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:17:45,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:17:47,613 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:17:47,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1985147339] [2022-04-15 06:17:47,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1985147339] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:17:47,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:17:47,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-04-15 06:17:47,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087356088] [2022-04-15 06:17:47,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:17:47,614 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.880952380952381) internal successors, (79), 41 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2022-04-15 06:17:47,614 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:17:47,614 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 43 states, 42 states have (on average 1.880952380952381) internal successors, (79), 41 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:47,713 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 83 edges. 83 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:17:47,713 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-04-15 06:17:47,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:17:47,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-04-15 06:17:47,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=2528, Unknown=0, NotChecked=0, Total=2862 [2022-04-15 06:17:47,714 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand has 43 states, 42 states have (on average 1.880952380952381) internal successors, (79), 41 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:54,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:17:54,567 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2022-04-15 06:17:54,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-04-15 06:17:54,567 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.880952380952381) internal successors, (79), 41 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2022-04-15 06:17:54,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:17:54,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.880952380952381) internal successors, (79), 41 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:54,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 99 transitions. [2022-04-15 06:17:54,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.880952380952381) internal successors, (79), 41 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:54,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 99 transitions. [2022-04-15 06:17:54,569 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 40 states and 99 transitions. [2022-04-15 06:17:54,680 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 99 edges. 99 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:17:54,681 INFO L225 Difference]: With dead ends: 94 [2022-04-15 06:17:54,681 INFO L226 Difference]: Without dead ends: 87 [2022-04-15 06:17:54,682 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 55 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1638 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=673, Invalid=7517, Unknown=0, NotChecked=0, Total=8190 [2022-04-15 06:17:54,682 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 45 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 3240 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 3282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-04-15 06:17:54,683 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 213 Invalid, 3282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3240 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-04-15 06:17:54,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-04-15 06:17:54,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-04-15 06:17:54,827 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:17:54,828 INFO L82 GeneralOperation]: Start isEquivalent. First operand 87 states. Second operand has 87 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 82 states have internal predecessors, (85), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:54,828 INFO L74 IsIncluded]: Start isIncluded. First operand 87 states. Second operand has 87 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 82 states have internal predecessors, (85), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:54,828 INFO L87 Difference]: Start difference. First operand 87 states. Second operand has 87 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 82 states have internal predecessors, (85), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:54,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:17:54,832 INFO L93 Difference]: Finished difference Result 87 states and 89 transitions. [2022-04-15 06:17:54,832 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2022-04-15 06:17:54,832 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:17:54,832 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:17:54,832 INFO L74 IsIncluded]: Start isIncluded. First operand has 87 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 82 states have internal predecessors, (85), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 87 states. [2022-04-15 06:17:54,832 INFO L87 Difference]: Start difference. First operand has 87 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 82 states have internal predecessors, (85), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 87 states. [2022-04-15 06:17:54,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:17:54,833 INFO L93 Difference]: Finished difference Result 87 states and 89 transitions. [2022-04-15 06:17:54,833 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2022-04-15 06:17:54,834 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:17:54,834 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:17:54,834 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:17:54,834 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:17:54,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 82 states have internal predecessors, (85), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:54,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2022-04-15 06:17:54,835 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 83 [2022-04-15 06:17:54,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:17:54,835 INFO L478 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2022-04-15 06:17:54,836 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 1.880952380952381) internal successors, (79), 41 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:17:54,836 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 87 states and 89 transitions. [2022-04-15 06:17:54,908 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 89 edges. 89 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:17:54,908 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2022-04-15 06:17:54,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-04-15 06:17:54,909 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:17:54,909 INFO L499 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:17:54,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-04-15 06:17:55,123 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-04-15 06:17:55,124 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:17:55,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:17:55,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2105346561, now seen corresponding path program 36 times [2022-04-15 06:17:55,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:17:55,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1902974437] [2022-04-15 06:17:59,192 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-15 06:17:59,244 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:18:00,139 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:18:00,140 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:18:00,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1975006668, now seen corresponding path program 1 times [2022-04-15 06:18:00,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:18:00,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989471633] [2022-04-15 06:18:00,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:18:00,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:18:00,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:18:00,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:18:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:18:00,242 INFO L290 TraceCheckUtils]: 0: Hoare triple {17725#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {17714#true} is VALID [2022-04-15 06:18:00,242 INFO L290 TraceCheckUtils]: 1: Hoare triple {17714#true} assume true; {17714#true} is VALID [2022-04-15 06:18:00,242 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {17714#true} {17714#true} #56#return; {17714#true} is VALID [2022-04-15 06:18:00,243 INFO L272 TraceCheckUtils]: 0: Hoare triple {17714#true} call ULTIMATE.init(); {17725#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:18:00,243 INFO L290 TraceCheckUtils]: 1: Hoare triple {17725#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {17714#true} is VALID [2022-04-15 06:18:00,243 INFO L290 TraceCheckUtils]: 2: Hoare triple {17714#true} assume true; {17714#true} is VALID [2022-04-15 06:18:00,243 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {17714#true} {17714#true} #56#return; {17714#true} is VALID [2022-04-15 06:18:00,243 INFO L272 TraceCheckUtils]: 4: Hoare triple {17714#true} call #t~ret1 := main(); {17714#true} is VALID [2022-04-15 06:18:00,243 INFO L290 TraceCheckUtils]: 5: Hoare triple {17714#true} ~x~0 := 0;~y~0 := 50; {17719#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:18:00,244 INFO L290 TraceCheckUtils]: 6: Hoare triple {17719#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [202] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1276 v_main_~x~0_1275))) (or .cse0 (and .cse0 (<= 50 v_main_~x~0_1276)) (and (< v_main_~x~0_1276 v_main_~x~0_1275) (< v_main_~x~0_1275 51)))) InVars {main_~x~0=v_main_~x~0_1276} OutVars{main_~x~0=v_main_~x~0_1275} AuxVars[] AssignedVars[main_~x~0] {17720#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:18:00,244 INFO L290 TraceCheckUtils]: 7: Hoare triple {17720#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [203] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {17720#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:18:00,245 INFO L290 TraceCheckUtils]: 8: Hoare triple {17720#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [204] L28-2-->L27-2_primed: Formula: (let ((.cse2 (<= 50 v_main_~x~0_1278)) (.cse0 (= v_main_~y~0_952 v_main_~y~0_951)) (.cse1 (= v_main_~x~0_1278 v_main_~x~0_1277))) (or (and .cse0 .cse1 (or (not (< v_main_~x~0_1278 100)) (not .cse2))) (and .cse2 (< v_main_~x~0_1277 101) (= (+ v_main_~x~0_1278 v_main_~y~0_951) (+ v_main_~x~0_1277 v_main_~y~0_952)) (< v_main_~x~0_1278 v_main_~x~0_1277)) (and .cse0 .cse1))) InVars {main_~x~0=v_main_~x~0_1278, main_~y~0=v_main_~y~0_952} OutVars{main_~x~0=v_main_~x~0_1277, main_~y~0=v_main_~y~0_951} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {17721#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:18:00,245 INFO L290 TraceCheckUtils]: 9: Hoare triple {17721#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [201] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {17722#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:18:00,246 INFO L272 TraceCheckUtils]: 10: Hoare triple {17722#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {17723#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:18:00,246 INFO L290 TraceCheckUtils]: 11: Hoare triple {17723#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {17724#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:18:00,247 INFO L290 TraceCheckUtils]: 12: Hoare triple {17724#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {17715#false} is VALID [2022-04-15 06:18:00,247 INFO L290 TraceCheckUtils]: 13: Hoare triple {17715#false} assume !false; {17715#false} is VALID [2022-04-15 06:18:00,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:18:00,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:18:00,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989471633] [2022-04-15 06:18:00,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989471633] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:18:00,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772745732] [2022-04-15 06:18:00,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:18:00,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:18:00,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:18:00,248 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:18:00,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-04-15 06:18:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:18:00,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:18:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:18:00,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:18:00,576 INFO L272 TraceCheckUtils]: 0: Hoare triple {17714#true} call ULTIMATE.init(); {17714#true} is VALID [2022-04-15 06:18:00,576 INFO L290 TraceCheckUtils]: 1: Hoare triple {17714#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {17714#true} is VALID [2022-04-15 06:18:00,576 INFO L290 TraceCheckUtils]: 2: Hoare triple {17714#true} assume true; {17714#true} is VALID [2022-04-15 06:18:00,576 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {17714#true} {17714#true} #56#return; {17714#true} is VALID [2022-04-15 06:18:00,576 INFO L272 TraceCheckUtils]: 4: Hoare triple {17714#true} call #t~ret1 := main(); {17714#true} is VALID [2022-04-15 06:18:00,576 INFO L290 TraceCheckUtils]: 5: Hoare triple {17714#true} ~x~0 := 0;~y~0 := 50; {17744#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:18:00,577 INFO L290 TraceCheckUtils]: 6: Hoare triple {17744#(and (<= main_~x~0 0) (= main_~y~0 50))} [202] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1276 v_main_~x~0_1275))) (or .cse0 (and .cse0 (<= 50 v_main_~x~0_1276)) (and (< v_main_~x~0_1276 v_main_~x~0_1275) (< v_main_~x~0_1275 51)))) InVars {main_~x~0=v_main_~x~0_1276} OutVars{main_~x~0=v_main_~x~0_1275} AuxVars[] AssignedVars[main_~x~0] {17748#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:18:00,577 INFO L290 TraceCheckUtils]: 7: Hoare triple {17748#(and (= main_~y~0 50) (< main_~x~0 51))} [203] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {17748#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:18:00,578 INFO L290 TraceCheckUtils]: 8: Hoare triple {17748#(and (= main_~y~0 50) (< main_~x~0 51))} [204] L28-2-->L27-2_primed: Formula: (let ((.cse2 (<= 50 v_main_~x~0_1278)) (.cse0 (= v_main_~y~0_952 v_main_~y~0_951)) (.cse1 (= v_main_~x~0_1278 v_main_~x~0_1277))) (or (and .cse0 .cse1 (or (not (< v_main_~x~0_1278 100)) (not .cse2))) (and .cse2 (< v_main_~x~0_1277 101) (= (+ v_main_~x~0_1278 v_main_~y~0_951) (+ v_main_~x~0_1277 v_main_~y~0_952)) (< v_main_~x~0_1278 v_main_~x~0_1277)) (and .cse0 .cse1))) InVars {main_~x~0=v_main_~x~0_1278, main_~y~0=v_main_~y~0_952} OutVars{main_~x~0=v_main_~x~0_1277, main_~y~0=v_main_~y~0_951} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {17755#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:18:00,579 INFO L290 TraceCheckUtils]: 9: Hoare triple {17755#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [201] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {17722#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:18:00,579 INFO L272 TraceCheckUtils]: 10: Hoare triple {17722#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {17762#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:18:00,580 INFO L290 TraceCheckUtils]: 11: Hoare triple {17762#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {17766#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:18:00,580 INFO L290 TraceCheckUtils]: 12: Hoare triple {17766#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {17715#false} is VALID [2022-04-15 06:18:00,580 INFO L290 TraceCheckUtils]: 13: Hoare triple {17715#false} assume !false; {17715#false} is VALID [2022-04-15 06:18:00,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:18:00,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:18:01,006 INFO L290 TraceCheckUtils]: 13: Hoare triple {17715#false} assume !false; {17715#false} is VALID [2022-04-15 06:18:01,006 INFO L290 TraceCheckUtils]: 12: Hoare triple {17766#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {17715#false} is VALID [2022-04-15 06:18:01,007 INFO L290 TraceCheckUtils]: 11: Hoare triple {17762#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {17766#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:18:01,007 INFO L272 TraceCheckUtils]: 10: Hoare triple {17722#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {17762#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:18:01,008 INFO L290 TraceCheckUtils]: 9: Hoare triple {17785#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [201] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {17722#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:18:01,008 INFO L290 TraceCheckUtils]: 8: Hoare triple {17789#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [204] L28-2-->L27-2_primed: Formula: (let ((.cse2 (<= 50 v_main_~x~0_1278)) (.cse0 (= v_main_~y~0_952 v_main_~y~0_951)) (.cse1 (= v_main_~x~0_1278 v_main_~x~0_1277))) (or (and .cse0 .cse1 (or (not (< v_main_~x~0_1278 100)) (not .cse2))) (and .cse2 (< v_main_~x~0_1277 101) (= (+ v_main_~x~0_1278 v_main_~y~0_951) (+ v_main_~x~0_1277 v_main_~y~0_952)) (< v_main_~x~0_1278 v_main_~x~0_1277)) (and .cse0 .cse1))) InVars {main_~x~0=v_main_~x~0_1278, main_~y~0=v_main_~y~0_952} OutVars{main_~x~0=v_main_~x~0_1277, main_~y~0=v_main_~y~0_951} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {17785#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:18:01,009 INFO L290 TraceCheckUtils]: 7: Hoare triple {17789#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [203] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {17789#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:18:01,010 INFO L290 TraceCheckUtils]: 6: Hoare triple {17796#(and (<= 50 main_~y~0) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [202] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1276 v_main_~x~0_1275))) (or .cse0 (and .cse0 (<= 50 v_main_~x~0_1276)) (and (< v_main_~x~0_1276 v_main_~x~0_1275) (< v_main_~x~0_1275 51)))) InVars {main_~x~0=v_main_~x~0_1276} OutVars{main_~x~0=v_main_~x~0_1275} AuxVars[] AssignedVars[main_~x~0] {17789#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:18:01,010 INFO L290 TraceCheckUtils]: 5: Hoare triple {17714#true} ~x~0 := 0;~y~0 := 50; {17796#(and (<= 50 main_~y~0) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:18:01,010 INFO L272 TraceCheckUtils]: 4: Hoare triple {17714#true} call #t~ret1 := main(); {17714#true} is VALID [2022-04-15 06:18:01,010 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {17714#true} {17714#true} #56#return; {17714#true} is VALID [2022-04-15 06:18:01,010 INFO L290 TraceCheckUtils]: 2: Hoare triple {17714#true} assume true; {17714#true} is VALID [2022-04-15 06:18:01,010 INFO L290 TraceCheckUtils]: 1: Hoare triple {17714#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {17714#true} is VALID [2022-04-15 06:18:01,011 INFO L272 TraceCheckUtils]: 0: Hoare triple {17714#true} call ULTIMATE.init(); {17714#true} is VALID [2022-04-15 06:18:01,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:18:01,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772745732] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:18:01,011 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:18:01,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:18:02,720 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:18:02,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1902974437] [2022-04-15 06:18:02,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1902974437] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:18:02,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:18:02,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-04-15 06:18:02,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758442549] [2022-04-15 06:18:02,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:18:02,721 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.8837209302325582) internal successors, (81), 42 states have internal predecessors, (81), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2022-04-15 06:18:02,721 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:18:02,721 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 44 states, 43 states have (on average 1.8837209302325582) internal successors, (81), 42 states have internal predecessors, (81), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:02,792 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 85 edges. 85 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:18:02,792 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-04-15 06:18:02,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:18:02,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-04-15 06:18:02,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=2629, Unknown=0, NotChecked=0, Total=2970 [2022-04-15 06:18:02,796 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand has 44 states, 43 states have (on average 1.8837209302325582) internal successors, (81), 42 states have internal predecessors, (81), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:09,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:18:09,124 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2022-04-15 06:18:09,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-04-15 06:18:09,124 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.8837209302325582) internal successors, (81), 42 states have internal predecessors, (81), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2022-04-15 06:18:09,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:18:09,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.8837209302325582) internal successors, (81), 42 states have internal predecessors, (81), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:09,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 101 transitions. [2022-04-15 06:18:09,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.8837209302325582) internal successors, (81), 42 states have internal predecessors, (81), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:09,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 101 transitions. [2022-04-15 06:18:09,126 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 41 states and 101 transitions. [2022-04-15 06:18:09,229 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 101 edges. 101 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:18:09,230 INFO L225 Difference]: With dead ends: 96 [2022-04-15 06:18:09,231 INFO L226 Difference]: Without dead ends: 89 [2022-04-15 06:18:09,231 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 56 SyntacticMatches, 4 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1699 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=689, Invalid=7867, Unknown=0, NotChecked=0, Total=8556 [2022-04-15 06:18:09,232 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 46 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 3403 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 3446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-04-15 06:18:09,232 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 218 Invalid, 3446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3403 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-04-15 06:18:09,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-04-15 06:18:09,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-04-15 06:18:09,365 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:18:09,365 INFO L82 GeneralOperation]: Start isEquivalent. First operand 89 states. Second operand has 89 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 84 states have internal predecessors, (87), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:09,365 INFO L74 IsIncluded]: Start isIncluded. First operand 89 states. Second operand has 89 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 84 states have internal predecessors, (87), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:09,365 INFO L87 Difference]: Start difference. First operand 89 states. Second operand has 89 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 84 states have internal predecessors, (87), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:09,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:18:09,366 INFO L93 Difference]: Finished difference Result 89 states and 91 transitions. [2022-04-15 06:18:09,366 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2022-04-15 06:18:09,366 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:18:09,367 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:18:09,367 INFO L74 IsIncluded]: Start isIncluded. First operand has 89 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 84 states have internal predecessors, (87), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 89 states. [2022-04-15 06:18:09,367 INFO L87 Difference]: Start difference. First operand has 89 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 84 states have internal predecessors, (87), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 89 states. [2022-04-15 06:18:09,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:18:09,368 INFO L93 Difference]: Finished difference Result 89 states and 91 transitions. [2022-04-15 06:18:09,368 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2022-04-15 06:18:09,368 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:18:09,368 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:18:09,368 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:18:09,368 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:18:09,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 84 states have internal predecessors, (87), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:09,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2022-04-15 06:18:09,370 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 85 [2022-04-15 06:18:09,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:18:09,370 INFO L478 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2022-04-15 06:18:09,370 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 1.8837209302325582) internal successors, (81), 42 states have internal predecessors, (81), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:09,370 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 89 states and 91 transitions. [2022-04-15 06:18:09,450 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 91 edges. 91 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:18:09,450 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2022-04-15 06:18:09,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-04-15 06:18:09,450 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:18:09,451 INFO L499 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:18:09,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-04-15 06:18:09,651 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-04-15 06:18:09,651 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:18:09,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:18:09,651 INFO L85 PathProgramCache]: Analyzing trace with hash 761223578, now seen corresponding path program 37 times [2022-04-15 06:18:09,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:18:09,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [925437172] [2022-04-15 06:18:13,104 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-15 06:18:13,148 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:18:13,582 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:18:13,583 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:18:13,585 INFO L85 PathProgramCache]: Analyzing trace with hash -270428468, now seen corresponding path program 1 times [2022-04-15 06:18:13,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:18:13,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123206242] [2022-04-15 06:18:13,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:18:13,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:18:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:18:13,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:18:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:18:13,693 INFO L290 TraceCheckUtils]: 0: Hoare triple {18490#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {18479#true} is VALID [2022-04-15 06:18:13,693 INFO L290 TraceCheckUtils]: 1: Hoare triple {18479#true} assume true; {18479#true} is VALID [2022-04-15 06:18:13,693 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {18479#true} {18479#true} #56#return; {18479#true} is VALID [2022-04-15 06:18:13,694 INFO L272 TraceCheckUtils]: 0: Hoare triple {18479#true} call ULTIMATE.init(); {18490#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:18:13,694 INFO L290 TraceCheckUtils]: 1: Hoare triple {18490#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {18479#true} is VALID [2022-04-15 06:18:13,694 INFO L290 TraceCheckUtils]: 2: Hoare triple {18479#true} assume true; {18479#true} is VALID [2022-04-15 06:18:13,694 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {18479#true} {18479#true} #56#return; {18479#true} is VALID [2022-04-15 06:18:13,694 INFO L272 TraceCheckUtils]: 4: Hoare triple {18479#true} call #t~ret1 := main(); {18479#true} is VALID [2022-04-15 06:18:13,694 INFO L290 TraceCheckUtils]: 5: Hoare triple {18479#true} ~x~0 := 0;~y~0 := 50; {18484#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:18:13,695 INFO L290 TraceCheckUtils]: 6: Hoare triple {18484#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [206] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1330 v_main_~x~0_1329))) (or .cse0 (and (< v_main_~x~0_1330 v_main_~x~0_1329) (< v_main_~x~0_1329 51)) (and .cse0 (<= 50 v_main_~x~0_1330)))) InVars {main_~x~0=v_main_~x~0_1330} OutVars{main_~x~0=v_main_~x~0_1329} AuxVars[] AssignedVars[main_~x~0] {18485#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:18:13,696 INFO L290 TraceCheckUtils]: 7: Hoare triple {18485#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [207] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {18485#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:18:13,697 INFO L290 TraceCheckUtils]: 8: Hoare triple {18485#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [208] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1332 v_main_~x~0_1331)) (.cse1 (= v_main_~y~0_997 v_main_~y~0_996)) (.cse2 (<= 50 v_main_~x~0_1332))) (or (and .cse0 .cse1) (and (or (not (< v_main_~x~0_1332 100)) (not .cse2)) .cse0 .cse1) (and .cse2 (= (+ v_main_~x~0_1331 v_main_~y~0_997) (+ v_main_~x~0_1332 v_main_~y~0_996)) (< v_main_~x~0_1331 101) (< v_main_~x~0_1332 v_main_~x~0_1331)))) InVars {main_~x~0=v_main_~x~0_1332, main_~y~0=v_main_~y~0_997} OutVars{main_~x~0=v_main_~x~0_1331, main_~y~0=v_main_~y~0_996} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {18486#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:18:13,697 INFO L290 TraceCheckUtils]: 9: Hoare triple {18486#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [205] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {18487#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:18:13,698 INFO L272 TraceCheckUtils]: 10: Hoare triple {18487#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {18488#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:18:13,699 INFO L290 TraceCheckUtils]: 11: Hoare triple {18488#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {18489#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:18:13,699 INFO L290 TraceCheckUtils]: 12: Hoare triple {18489#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {18480#false} is VALID [2022-04-15 06:18:13,699 INFO L290 TraceCheckUtils]: 13: Hoare triple {18480#false} assume !false; {18480#false} is VALID [2022-04-15 06:18:13,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:18:13,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:18:13,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123206242] [2022-04-15 06:18:13,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123206242] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:18:13,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845123525] [2022-04-15 06:18:13,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:18:13,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:18:13,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:18:13,701 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:18:13,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-04-15 06:18:13,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:18:13,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:18:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:18:13,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:18:14,047 INFO L272 TraceCheckUtils]: 0: Hoare triple {18479#true} call ULTIMATE.init(); {18479#true} is VALID [2022-04-15 06:18:14,048 INFO L290 TraceCheckUtils]: 1: Hoare triple {18479#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {18479#true} is VALID [2022-04-15 06:18:14,048 INFO L290 TraceCheckUtils]: 2: Hoare triple {18479#true} assume true; {18479#true} is VALID [2022-04-15 06:18:14,048 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {18479#true} {18479#true} #56#return; {18479#true} is VALID [2022-04-15 06:18:14,048 INFO L272 TraceCheckUtils]: 4: Hoare triple {18479#true} call #t~ret1 := main(); {18479#true} is VALID [2022-04-15 06:18:14,048 INFO L290 TraceCheckUtils]: 5: Hoare triple {18479#true} ~x~0 := 0;~y~0 := 50; {18509#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:18:14,049 INFO L290 TraceCheckUtils]: 6: Hoare triple {18509#(and (<= main_~x~0 0) (= main_~y~0 50))} [206] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1330 v_main_~x~0_1329))) (or .cse0 (and (< v_main_~x~0_1330 v_main_~x~0_1329) (< v_main_~x~0_1329 51)) (and .cse0 (<= 50 v_main_~x~0_1330)))) InVars {main_~x~0=v_main_~x~0_1330} OutVars{main_~x~0=v_main_~x~0_1329} AuxVars[] AssignedVars[main_~x~0] {18513#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:18:14,049 INFO L290 TraceCheckUtils]: 7: Hoare triple {18513#(and (= main_~y~0 50) (< main_~x~0 51))} [207] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {18513#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:18:14,050 INFO L290 TraceCheckUtils]: 8: Hoare triple {18513#(and (= main_~y~0 50) (< main_~x~0 51))} [208] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1332 v_main_~x~0_1331)) (.cse1 (= v_main_~y~0_997 v_main_~y~0_996)) (.cse2 (<= 50 v_main_~x~0_1332))) (or (and .cse0 .cse1) (and (or (not (< v_main_~x~0_1332 100)) (not .cse2)) .cse0 .cse1) (and .cse2 (= (+ v_main_~x~0_1331 v_main_~y~0_997) (+ v_main_~x~0_1332 v_main_~y~0_996)) (< v_main_~x~0_1331 101) (< v_main_~x~0_1332 v_main_~x~0_1331)))) InVars {main_~x~0=v_main_~x~0_1332, main_~y~0=v_main_~y~0_997} OutVars{main_~x~0=v_main_~x~0_1331, main_~y~0=v_main_~y~0_996} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {18520#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:18:14,051 INFO L290 TraceCheckUtils]: 9: Hoare triple {18520#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [205] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {18487#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:18:14,052 INFO L272 TraceCheckUtils]: 10: Hoare triple {18487#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {18527#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:18:14,052 INFO L290 TraceCheckUtils]: 11: Hoare triple {18527#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {18531#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:18:14,052 INFO L290 TraceCheckUtils]: 12: Hoare triple {18531#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {18480#false} is VALID [2022-04-15 06:18:14,052 INFO L290 TraceCheckUtils]: 13: Hoare triple {18480#false} assume !false; {18480#false} is VALID [2022-04-15 06:18:14,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:18:14,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:18:14,563 INFO L290 TraceCheckUtils]: 13: Hoare triple {18480#false} assume !false; {18480#false} is VALID [2022-04-15 06:18:14,564 INFO L290 TraceCheckUtils]: 12: Hoare triple {18531#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {18480#false} is VALID [2022-04-15 06:18:14,564 INFO L290 TraceCheckUtils]: 11: Hoare triple {18527#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {18531#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:18:14,565 INFO L272 TraceCheckUtils]: 10: Hoare triple {18487#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {18527#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:18:14,566 INFO L290 TraceCheckUtils]: 9: Hoare triple {18550#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [205] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {18487#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:18:14,567 INFO L290 TraceCheckUtils]: 8: Hoare triple {18554#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [208] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1332 v_main_~x~0_1331)) (.cse1 (= v_main_~y~0_997 v_main_~y~0_996)) (.cse2 (<= 50 v_main_~x~0_1332))) (or (and .cse0 .cse1) (and (or (not (< v_main_~x~0_1332 100)) (not .cse2)) .cse0 .cse1) (and .cse2 (= (+ v_main_~x~0_1331 v_main_~y~0_997) (+ v_main_~x~0_1332 v_main_~y~0_996)) (< v_main_~x~0_1331 101) (< v_main_~x~0_1332 v_main_~x~0_1331)))) InVars {main_~x~0=v_main_~x~0_1332, main_~y~0=v_main_~y~0_997} OutVars{main_~x~0=v_main_~x~0_1331, main_~y~0=v_main_~y~0_996} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {18550#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:18:14,567 INFO L290 TraceCheckUtils]: 7: Hoare triple {18554#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [207] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {18554#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:18:14,568 INFO L290 TraceCheckUtils]: 6: Hoare triple {18561#(and (<= 50 main_~y~0) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [206] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1330 v_main_~x~0_1329))) (or .cse0 (and (< v_main_~x~0_1330 v_main_~x~0_1329) (< v_main_~x~0_1329 51)) (and .cse0 (<= 50 v_main_~x~0_1330)))) InVars {main_~x~0=v_main_~x~0_1330} OutVars{main_~x~0=v_main_~x~0_1329} AuxVars[] AssignedVars[main_~x~0] {18554#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:18:14,569 INFO L290 TraceCheckUtils]: 5: Hoare triple {18479#true} ~x~0 := 0;~y~0 := 50; {18561#(and (<= 50 main_~y~0) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:18:14,569 INFO L272 TraceCheckUtils]: 4: Hoare triple {18479#true} call #t~ret1 := main(); {18479#true} is VALID [2022-04-15 06:18:14,569 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {18479#true} {18479#true} #56#return; {18479#true} is VALID [2022-04-15 06:18:14,569 INFO L290 TraceCheckUtils]: 2: Hoare triple {18479#true} assume true; {18479#true} is VALID [2022-04-15 06:18:14,569 INFO L290 TraceCheckUtils]: 1: Hoare triple {18479#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {18479#true} is VALID [2022-04-15 06:18:14,569 INFO L272 TraceCheckUtils]: 0: Hoare triple {18479#true} call ULTIMATE.init(); {18479#true} is VALID [2022-04-15 06:18:14,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:18:14,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845123525] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:18:14,570 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:18:14,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:18:16,289 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:18:16,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [925437172] [2022-04-15 06:18:16,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [925437172] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:18:16,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:18:16,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-04-15 06:18:16,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837886815] [2022-04-15 06:18:16,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:18:16,289 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 1.8863636363636365) internal successors, (83), 43 states have internal predecessors, (83), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2022-04-15 06:18:16,290 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:18:16,290 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 45 states, 44 states have (on average 1.8863636363636365) internal successors, (83), 43 states have internal predecessors, (83), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:16,355 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 87 edges. 87 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:18:16,355 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-04-15 06:18:16,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:18:16,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-04-15 06:18:16,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=2732, Unknown=0, NotChecked=0, Total=3080 [2022-04-15 06:18:16,356 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand has 45 states, 44 states have (on average 1.8863636363636365) internal successors, (83), 43 states have internal predecessors, (83), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:22,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:18:22,630 INFO L93 Difference]: Finished difference Result 98 states and 103 transitions. [2022-04-15 06:18:22,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-04-15 06:18:22,630 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 1.8863636363636365) internal successors, (83), 43 states have internal predecessors, (83), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2022-04-15 06:18:22,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:18:22,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.8863636363636365) internal successors, (83), 43 states have internal predecessors, (83), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:22,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 103 transitions. [2022-04-15 06:18:22,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.8863636363636365) internal successors, (83), 43 states have internal predecessors, (83), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:22,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 103 transitions. [2022-04-15 06:18:22,632 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 42 states and 103 transitions. [2022-04-15 06:18:22,717 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 103 edges. 103 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:18:22,718 INFO L225 Difference]: With dead ends: 98 [2022-04-15 06:18:22,718 INFO L226 Difference]: Without dead ends: 91 [2022-04-15 06:18:22,719 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 57 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1761 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=705, Invalid=8225, Unknown=0, NotChecked=0, Total=8930 [2022-04-15 06:18:22,719 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 47 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 3489 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 3533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 3489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-04-15 06:18:22,719 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 218 Invalid, 3533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 3489 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-04-15 06:18:22,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-04-15 06:18:22,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-04-15 06:18:22,859 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:18:22,859 INFO L82 GeneralOperation]: Start isEquivalent. First operand 91 states. Second operand has 91 states, 86 states have (on average 1.0348837209302326) internal successors, (89), 86 states have internal predecessors, (89), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:22,860 INFO L74 IsIncluded]: Start isIncluded. First operand 91 states. Second operand has 91 states, 86 states have (on average 1.0348837209302326) internal successors, (89), 86 states have internal predecessors, (89), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:22,860 INFO L87 Difference]: Start difference. First operand 91 states. Second operand has 91 states, 86 states have (on average 1.0348837209302326) internal successors, (89), 86 states have internal predecessors, (89), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:22,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:18:22,861 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2022-04-15 06:18:22,861 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2022-04-15 06:18:22,861 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:18:22,861 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:18:22,861 INFO L74 IsIncluded]: Start isIncluded. First operand has 91 states, 86 states have (on average 1.0348837209302326) internal successors, (89), 86 states have internal predecessors, (89), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 91 states. [2022-04-15 06:18:22,862 INFO L87 Difference]: Start difference. First operand has 91 states, 86 states have (on average 1.0348837209302326) internal successors, (89), 86 states have internal predecessors, (89), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 91 states. [2022-04-15 06:18:22,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:18:22,863 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2022-04-15 06:18:22,863 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2022-04-15 06:18:22,863 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:18:22,863 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:18:22,863 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:18:22,863 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:18:22,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 86 states have (on average 1.0348837209302326) internal successors, (89), 86 states have internal predecessors, (89), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:22,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2022-04-15 06:18:22,864 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 87 [2022-04-15 06:18:22,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:18:22,865 INFO L478 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2022-04-15 06:18:22,865 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 1.8863636363636365) internal successors, (83), 43 states have internal predecessors, (83), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:22,865 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 91 states and 93 transitions. [2022-04-15 06:18:22,991 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 93 edges. 93 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:18:22,992 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2022-04-15 06:18:22,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-04-15 06:18:22,992 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:18:22,992 INFO L499 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:18:23,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-04-15 06:18:23,193 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-04-15 06:18:23,193 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:18:23,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:18:23,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1833876875, now seen corresponding path program 38 times [2022-04-15 06:18:23,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:18:23,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1552011353] [2022-04-15 06:18:23,316 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:18:23,578 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:18:23,579 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:18:23,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1779103692, now seen corresponding path program 1 times [2022-04-15 06:18:23,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:18:23,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950041743] [2022-04-15 06:18:23,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:18:23,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:18:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:18:23,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:18:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:18:23,701 INFO L290 TraceCheckUtils]: 0: Hoare triple {19270#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {19259#true} is VALID [2022-04-15 06:18:23,701 INFO L290 TraceCheckUtils]: 1: Hoare triple {19259#true} assume true; {19259#true} is VALID [2022-04-15 06:18:23,701 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {19259#true} {19259#true} #56#return; {19259#true} is VALID [2022-04-15 06:18:23,702 INFO L272 TraceCheckUtils]: 0: Hoare triple {19259#true} call ULTIMATE.init(); {19270#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:18:23,702 INFO L290 TraceCheckUtils]: 1: Hoare triple {19270#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {19259#true} is VALID [2022-04-15 06:18:23,702 INFO L290 TraceCheckUtils]: 2: Hoare triple {19259#true} assume true; {19259#true} is VALID [2022-04-15 06:18:23,702 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {19259#true} {19259#true} #56#return; {19259#true} is VALID [2022-04-15 06:18:23,702 INFO L272 TraceCheckUtils]: 4: Hoare triple {19259#true} call #t~ret1 := main(); {19259#true} is VALID [2022-04-15 06:18:23,702 INFO L290 TraceCheckUtils]: 5: Hoare triple {19259#true} ~x~0 := 0;~y~0 := 50; {19264#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:18:23,703 INFO L290 TraceCheckUtils]: 6: Hoare triple {19264#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [210] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1385 v_main_~x~0_1384))) (or .cse0 (and (< v_main_~x~0_1384 51) (< v_main_~x~0_1385 v_main_~x~0_1384)) (and .cse0 (not (< v_main_~x~0_1385 50))))) InVars {main_~x~0=v_main_~x~0_1385} OutVars{main_~x~0=v_main_~x~0_1384} AuxVars[] AssignedVars[main_~x~0] {19265#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:18:23,704 INFO L290 TraceCheckUtils]: 7: Hoare triple {19265#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [211] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {19265#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:18:23,705 INFO L290 TraceCheckUtils]: 8: Hoare triple {19265#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [212] L28-2-->L27-2_primed: Formula: (let ((.cse0 (<= 50 v_main_~x~0_1387)) (.cse1 (= v_main_~y~0_1043 v_main_~y~0_1042)) (.cse2 (= v_main_~x~0_1387 v_main_~x~0_1386))) (or (and (or (not .cse0) (not (< v_main_~x~0_1387 100))) .cse1 .cse2) (and (< v_main_~x~0_1386 101) (< v_main_~x~0_1387 v_main_~x~0_1386) .cse0 (= (+ v_main_~x~0_1387 v_main_~y~0_1042) (+ v_main_~x~0_1386 v_main_~y~0_1043))) (and .cse1 .cse2))) InVars {main_~x~0=v_main_~x~0_1387, main_~y~0=v_main_~y~0_1043} OutVars{main_~x~0=v_main_~x~0_1386, main_~y~0=v_main_~y~0_1042} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {19266#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:18:23,705 INFO L290 TraceCheckUtils]: 9: Hoare triple {19266#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [209] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {19267#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:18:23,706 INFO L272 TraceCheckUtils]: 10: Hoare triple {19267#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {19268#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:18:23,707 INFO L290 TraceCheckUtils]: 11: Hoare triple {19268#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {19269#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:18:23,707 INFO L290 TraceCheckUtils]: 12: Hoare triple {19269#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {19260#false} is VALID [2022-04-15 06:18:23,707 INFO L290 TraceCheckUtils]: 13: Hoare triple {19260#false} assume !false; {19260#false} is VALID [2022-04-15 06:18:23,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:18:23,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:18:23,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950041743] [2022-04-15 06:18:23,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950041743] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:18:23,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913579956] [2022-04-15 06:18:23,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:18:23,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:18:23,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:18:23,709 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:18:23,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-04-15 06:18:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:18:23,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:18:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:18:23,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:18:24,102 INFO L272 TraceCheckUtils]: 0: Hoare triple {19259#true} call ULTIMATE.init(); {19259#true} is VALID [2022-04-15 06:18:24,102 INFO L290 TraceCheckUtils]: 1: Hoare triple {19259#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {19259#true} is VALID [2022-04-15 06:18:24,102 INFO L290 TraceCheckUtils]: 2: Hoare triple {19259#true} assume true; {19259#true} is VALID [2022-04-15 06:18:24,103 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {19259#true} {19259#true} #56#return; {19259#true} is VALID [2022-04-15 06:18:24,103 INFO L272 TraceCheckUtils]: 4: Hoare triple {19259#true} call #t~ret1 := main(); {19259#true} is VALID [2022-04-15 06:18:24,103 INFO L290 TraceCheckUtils]: 5: Hoare triple {19259#true} ~x~0 := 0;~y~0 := 50; {19289#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:18:24,104 INFO L290 TraceCheckUtils]: 6: Hoare triple {19289#(and (<= main_~x~0 0) (= main_~y~0 50))} [210] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1385 v_main_~x~0_1384))) (or .cse0 (and (< v_main_~x~0_1384 51) (< v_main_~x~0_1385 v_main_~x~0_1384)) (and .cse0 (not (< v_main_~x~0_1385 50))))) InVars {main_~x~0=v_main_~x~0_1385} OutVars{main_~x~0=v_main_~x~0_1384} AuxVars[] AssignedVars[main_~x~0] {19293#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:18:24,104 INFO L290 TraceCheckUtils]: 7: Hoare triple {19293#(and (= main_~y~0 50) (< main_~x~0 51))} [211] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {19293#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:18:24,105 INFO L290 TraceCheckUtils]: 8: Hoare triple {19293#(and (= main_~y~0 50) (< main_~x~0 51))} [212] L28-2-->L27-2_primed: Formula: (let ((.cse0 (<= 50 v_main_~x~0_1387)) (.cse1 (= v_main_~y~0_1043 v_main_~y~0_1042)) (.cse2 (= v_main_~x~0_1387 v_main_~x~0_1386))) (or (and (or (not .cse0) (not (< v_main_~x~0_1387 100))) .cse1 .cse2) (and (< v_main_~x~0_1386 101) (< v_main_~x~0_1387 v_main_~x~0_1386) .cse0 (= (+ v_main_~x~0_1387 v_main_~y~0_1042) (+ v_main_~x~0_1386 v_main_~y~0_1043))) (and .cse1 .cse2))) InVars {main_~x~0=v_main_~x~0_1387, main_~y~0=v_main_~y~0_1043} OutVars{main_~x~0=v_main_~x~0_1386, main_~y~0=v_main_~y~0_1042} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {19300#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:18:24,105 INFO L290 TraceCheckUtils]: 9: Hoare triple {19300#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [209] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {19267#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:18:24,106 INFO L272 TraceCheckUtils]: 10: Hoare triple {19267#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {19307#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:18:24,106 INFO L290 TraceCheckUtils]: 11: Hoare triple {19307#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {19311#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:18:24,107 INFO L290 TraceCheckUtils]: 12: Hoare triple {19311#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {19260#false} is VALID [2022-04-15 06:18:24,107 INFO L290 TraceCheckUtils]: 13: Hoare triple {19260#false} assume !false; {19260#false} is VALID [2022-04-15 06:18:24,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:18:24,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:18:24,571 INFO L290 TraceCheckUtils]: 13: Hoare triple {19260#false} assume !false; {19260#false} is VALID [2022-04-15 06:18:24,572 INFO L290 TraceCheckUtils]: 12: Hoare triple {19311#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {19260#false} is VALID [2022-04-15 06:18:24,572 INFO L290 TraceCheckUtils]: 11: Hoare triple {19307#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {19311#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:18:24,573 INFO L272 TraceCheckUtils]: 10: Hoare triple {19267#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {19307#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:18:24,573 INFO L290 TraceCheckUtils]: 9: Hoare triple {19330#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [209] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {19267#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:18:24,574 INFO L290 TraceCheckUtils]: 8: Hoare triple {19334#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (< main_~x~0 (+ main_~y~0 1)) (not (<= 50 main_~x~0)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [212] L28-2-->L27-2_primed: Formula: (let ((.cse0 (<= 50 v_main_~x~0_1387)) (.cse1 (= v_main_~y~0_1043 v_main_~y~0_1042)) (.cse2 (= v_main_~x~0_1387 v_main_~x~0_1386))) (or (and (or (not .cse0) (not (< v_main_~x~0_1387 100))) .cse1 .cse2) (and (< v_main_~x~0_1386 101) (< v_main_~x~0_1387 v_main_~x~0_1386) .cse0 (= (+ v_main_~x~0_1387 v_main_~y~0_1042) (+ v_main_~x~0_1386 v_main_~y~0_1043))) (and .cse1 .cse2))) InVars {main_~x~0=v_main_~x~0_1387, main_~y~0=v_main_~y~0_1043} OutVars{main_~x~0=v_main_~x~0_1386, main_~y~0=v_main_~y~0_1042} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {19330#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:18:24,575 INFO L290 TraceCheckUtils]: 7: Hoare triple {19334#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (< main_~x~0 (+ main_~y~0 1)) (not (<= 50 main_~x~0)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [211] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {19334#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (< main_~x~0 (+ main_~y~0 1)) (not (<= 50 main_~x~0)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:18:24,575 INFO L290 TraceCheckUtils]: 6: Hoare triple {19341#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= 50 main_~y~0) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [210] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1385 v_main_~x~0_1384))) (or .cse0 (and (< v_main_~x~0_1384 51) (< v_main_~x~0_1385 v_main_~x~0_1384)) (and .cse0 (not (< v_main_~x~0_1385 50))))) InVars {main_~x~0=v_main_~x~0_1385} OutVars{main_~x~0=v_main_~x~0_1384} AuxVars[] AssignedVars[main_~x~0] {19334#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (< main_~x~0 (+ main_~y~0 1)) (not (<= 50 main_~x~0)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:18:24,576 INFO L290 TraceCheckUtils]: 5: Hoare triple {19259#true} ~x~0 := 0;~y~0 := 50; {19341#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= 50 main_~y~0) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:18:24,576 INFO L272 TraceCheckUtils]: 4: Hoare triple {19259#true} call #t~ret1 := main(); {19259#true} is VALID [2022-04-15 06:18:24,576 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {19259#true} {19259#true} #56#return; {19259#true} is VALID [2022-04-15 06:18:24,576 INFO L290 TraceCheckUtils]: 2: Hoare triple {19259#true} assume true; {19259#true} is VALID [2022-04-15 06:18:24,576 INFO L290 TraceCheckUtils]: 1: Hoare triple {19259#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {19259#true} is VALID [2022-04-15 06:18:24,576 INFO L272 TraceCheckUtils]: 0: Hoare triple {19259#true} call ULTIMATE.init(); {19259#true} is VALID [2022-04-15 06:18:24,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:18:24,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913579956] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:18:24,577 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:18:24,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:18:26,344 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:18:26,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1552011353] [2022-04-15 06:18:26,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1552011353] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:18:26,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:18:26,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-04-15 06:18:26,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346599754] [2022-04-15 06:18:26,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:18:26,345 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.8888888888888888) internal successors, (85), 44 states have internal predecessors, (85), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2022-04-15 06:18:26,346 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:18:26,346 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 46 states, 45 states have (on average 1.8888888888888888) internal successors, (85), 44 states have internal predecessors, (85), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:26,417 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 89 edges. 89 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:18:26,417 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-04-15 06:18:26,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:18:26,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-04-15 06:18:26,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=2837, Unknown=0, NotChecked=0, Total=3192 [2022-04-15 06:18:26,418 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand has 46 states, 45 states have (on average 1.8888888888888888) internal successors, (85), 44 states have internal predecessors, (85), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:33,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:18:33,002 INFO L93 Difference]: Finished difference Result 100 states and 105 transitions. [2022-04-15 06:18:33,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-04-15 06:18:33,003 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.8888888888888888) internal successors, (85), 44 states have internal predecessors, (85), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2022-04-15 06:18:33,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:18:33,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.8888888888888888) internal successors, (85), 44 states have internal predecessors, (85), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:33,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 105 transitions. [2022-04-15 06:18:33,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.8888888888888888) internal successors, (85), 44 states have internal predecessors, (85), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:33,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 105 transitions. [2022-04-15 06:18:33,005 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 43 states and 105 transitions. [2022-04-15 06:18:33,105 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 105 edges. 105 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:18:33,106 INFO L225 Difference]: With dead ends: 100 [2022-04-15 06:18:33,106 INFO L226 Difference]: Without dead ends: 93 [2022-04-15 06:18:33,107 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 58 SyntacticMatches, 4 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1824 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=721, Invalid=8591, Unknown=0, NotChecked=0, Total=9312 [2022-04-15 06:18:33,107 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 48 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 3741 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 3786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 3741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-04-15 06:18:33,107 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 228 Invalid, 3786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 3741 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-04-15 06:18:33,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-04-15 06:18:33,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2022-04-15 06:18:33,266 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:18:33,266 INFO L82 GeneralOperation]: Start isEquivalent. First operand 93 states. Second operand has 93 states, 88 states have (on average 1.0340909090909092) internal successors, (91), 88 states have internal predecessors, (91), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:33,266 INFO L74 IsIncluded]: Start isIncluded. First operand 93 states. Second operand has 93 states, 88 states have (on average 1.0340909090909092) internal successors, (91), 88 states have internal predecessors, (91), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:33,266 INFO L87 Difference]: Start difference. First operand 93 states. Second operand has 93 states, 88 states have (on average 1.0340909090909092) internal successors, (91), 88 states have internal predecessors, (91), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:33,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:18:33,267 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2022-04-15 06:18:33,267 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2022-04-15 06:18:33,267 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:18:33,268 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:18:33,268 INFO L74 IsIncluded]: Start isIncluded. First operand has 93 states, 88 states have (on average 1.0340909090909092) internal successors, (91), 88 states have internal predecessors, (91), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 93 states. [2022-04-15 06:18:33,268 INFO L87 Difference]: Start difference. First operand has 93 states, 88 states have (on average 1.0340909090909092) internal successors, (91), 88 states have internal predecessors, (91), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 93 states. [2022-04-15 06:18:33,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:18:33,269 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2022-04-15 06:18:33,269 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2022-04-15 06:18:33,269 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:18:33,269 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:18:33,269 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:18:33,269 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:18:33,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 88 states have (on average 1.0340909090909092) internal successors, (91), 88 states have internal predecessors, (91), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:33,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2022-04-15 06:18:33,271 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 89 [2022-04-15 06:18:33,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:18:33,271 INFO L478 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2022-04-15 06:18:33,271 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.8888888888888888) internal successors, (85), 44 states have internal predecessors, (85), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:33,271 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 93 states and 95 transitions. [2022-04-15 06:18:33,352 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 95 edges. 95 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:18:33,352 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2022-04-15 06:18:33,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-04-15 06:18:33,352 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:18:33,353 INFO L499 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:18:33,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-04-15 06:18:33,563 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-04-15 06:18:33,563 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:18:33,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:18:33,564 INFO L85 PathProgramCache]: Analyzing trace with hash -349413232, now seen corresponding path program 39 times [2022-04-15 06:18:33,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:18:33,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1796194224] [2022-04-15 06:18:37,620 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-15 06:18:37,663 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:18:37,882 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:18:37,883 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:18:37,885 INFO L85 PathProgramCache]: Analyzing trace with hash -466331444, now seen corresponding path program 1 times [2022-04-15 06:18:37,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:18:37,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174279198] [2022-04-15 06:18:37,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:18:37,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:18:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:18:37,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:18:37,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:18:37,986 INFO L290 TraceCheckUtils]: 0: Hoare triple {20065#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {20054#true} is VALID [2022-04-15 06:18:37,987 INFO L290 TraceCheckUtils]: 1: Hoare triple {20054#true} assume true; {20054#true} is VALID [2022-04-15 06:18:37,987 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {20054#true} {20054#true} #56#return; {20054#true} is VALID [2022-04-15 06:18:37,987 INFO L272 TraceCheckUtils]: 0: Hoare triple {20054#true} call ULTIMATE.init(); {20065#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:18:37,987 INFO L290 TraceCheckUtils]: 1: Hoare triple {20065#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {20054#true} is VALID [2022-04-15 06:18:37,987 INFO L290 TraceCheckUtils]: 2: Hoare triple {20054#true} assume true; {20054#true} is VALID [2022-04-15 06:18:37,987 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {20054#true} {20054#true} #56#return; {20054#true} is VALID [2022-04-15 06:18:37,988 INFO L272 TraceCheckUtils]: 4: Hoare triple {20054#true} call #t~ret1 := main(); {20054#true} is VALID [2022-04-15 06:18:37,988 INFO L290 TraceCheckUtils]: 5: Hoare triple {20054#true} ~x~0 := 0;~y~0 := 50; {20059#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:18:37,989 INFO L290 TraceCheckUtils]: 6: Hoare triple {20059#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [214] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1441 v_main_~x~0_1440))) (or (and .cse0 (not (< v_main_~x~0_1441 50))) (and (< v_main_~x~0_1441 v_main_~x~0_1440) (< v_main_~x~0_1440 51)) .cse0)) InVars {main_~x~0=v_main_~x~0_1441} OutVars{main_~x~0=v_main_~x~0_1440} AuxVars[] AssignedVars[main_~x~0] {20060#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:18:37,989 INFO L290 TraceCheckUtils]: 7: Hoare triple {20060#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [215] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {20060#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:18:37,990 INFO L290 TraceCheckUtils]: 8: Hoare triple {20060#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [216] L28-2-->L27-2_primed: Formula: (let ((.cse1 (<= 50 v_main_~x~0_1443)) (.cse0 (= v_main_~x~0_1443 v_main_~x~0_1442))) (or (and .cse0 (= v_main_~y~0_1090 v_main_~y~0_1089)) (let ((.cse2 (+ v_main_~x~0_1443 v_main_~y~0_1089))) (and (< v_main_~y~0_1090 v_main_~y~0_1089) .cse1 (= (+ v_main_~x~0_1442 v_main_~y~0_1090) .cse2) (< .cse2 (+ 101 v_main_~y~0_1090)))) (and (or (not .cse1) (not (< v_main_~x~0_1443 100))) .cse0 (= v_main_~y~0_1089 v_main_~y~0_1090)))) InVars {main_~x~0=v_main_~x~0_1443, main_~y~0=v_main_~y~0_1090} OutVars{main_~x~0=v_main_~x~0_1442, main_~y~0=v_main_~y~0_1089} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {20061#(or (<= main_~x~0 99) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:18:37,991 INFO L290 TraceCheckUtils]: 9: Hoare triple {20061#(or (<= main_~x~0 99) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [213] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {20062#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:18:37,992 INFO L272 TraceCheckUtils]: 10: Hoare triple {20062#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {20063#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:18:37,992 INFO L290 TraceCheckUtils]: 11: Hoare triple {20063#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {20064#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:18:37,992 INFO L290 TraceCheckUtils]: 12: Hoare triple {20064#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {20055#false} is VALID [2022-04-15 06:18:37,993 INFO L290 TraceCheckUtils]: 13: Hoare triple {20055#false} assume !false; {20055#false} is VALID [2022-04-15 06:18:37,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:18:37,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:18:37,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174279198] [2022-04-15 06:18:37,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174279198] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:18:37,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356676748] [2022-04-15 06:18:37,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:18:37,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:18:37,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:18:37,996 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:18:38,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-04-15 06:18:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:18:38,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:18:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:18:38,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:18:38,302 INFO L272 TraceCheckUtils]: 0: Hoare triple {20054#true} call ULTIMATE.init(); {20054#true} is VALID [2022-04-15 06:18:38,302 INFO L290 TraceCheckUtils]: 1: Hoare triple {20054#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {20054#true} is VALID [2022-04-15 06:18:38,302 INFO L290 TraceCheckUtils]: 2: Hoare triple {20054#true} assume true; {20054#true} is VALID [2022-04-15 06:18:38,302 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {20054#true} {20054#true} #56#return; {20054#true} is VALID [2022-04-15 06:18:38,302 INFO L272 TraceCheckUtils]: 4: Hoare triple {20054#true} call #t~ret1 := main(); {20054#true} is VALID [2022-04-15 06:18:38,302 INFO L290 TraceCheckUtils]: 5: Hoare triple {20054#true} ~x~0 := 0;~y~0 := 50; {20084#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:18:38,303 INFO L290 TraceCheckUtils]: 6: Hoare triple {20084#(and (<= main_~x~0 0) (= main_~y~0 50))} [214] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1441 v_main_~x~0_1440))) (or (and .cse0 (not (< v_main_~x~0_1441 50))) (and (< v_main_~x~0_1441 v_main_~x~0_1440) (< v_main_~x~0_1440 51)) .cse0)) InVars {main_~x~0=v_main_~x~0_1441} OutVars{main_~x~0=v_main_~x~0_1440} AuxVars[] AssignedVars[main_~x~0] {20088#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:18:38,303 INFO L290 TraceCheckUtils]: 7: Hoare triple {20088#(and (= main_~y~0 50) (< main_~x~0 51))} [215] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {20088#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:18:38,304 INFO L290 TraceCheckUtils]: 8: Hoare triple {20088#(and (= main_~y~0 50) (< main_~x~0 51))} [216] L28-2-->L27-2_primed: Formula: (let ((.cse1 (<= 50 v_main_~x~0_1443)) (.cse0 (= v_main_~x~0_1443 v_main_~x~0_1442))) (or (and .cse0 (= v_main_~y~0_1090 v_main_~y~0_1089)) (let ((.cse2 (+ v_main_~x~0_1443 v_main_~y~0_1089))) (and (< v_main_~y~0_1090 v_main_~y~0_1089) .cse1 (= (+ v_main_~x~0_1442 v_main_~y~0_1090) .cse2) (< .cse2 (+ 101 v_main_~y~0_1090)))) (and (or (not .cse1) (not (< v_main_~x~0_1443 100))) .cse0 (= v_main_~y~0_1089 v_main_~y~0_1090)))) InVars {main_~x~0=v_main_~x~0_1443, main_~y~0=v_main_~y~0_1090} OutVars{main_~x~0=v_main_~x~0_1442, main_~y~0=v_main_~y~0_1089} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {20095#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:18:38,305 INFO L290 TraceCheckUtils]: 9: Hoare triple {20095#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [213] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {20062#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:18:38,307 INFO L272 TraceCheckUtils]: 10: Hoare triple {20062#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {20102#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:18:38,311 INFO L290 TraceCheckUtils]: 11: Hoare triple {20102#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {20106#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:18:38,312 INFO L290 TraceCheckUtils]: 12: Hoare triple {20106#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {20055#false} is VALID [2022-04-15 06:18:38,312 INFO L290 TraceCheckUtils]: 13: Hoare triple {20055#false} assume !false; {20055#false} is VALID [2022-04-15 06:18:38,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:18:38,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:18:38,726 INFO L290 TraceCheckUtils]: 13: Hoare triple {20055#false} assume !false; {20055#false} is VALID [2022-04-15 06:18:38,726 INFO L290 TraceCheckUtils]: 12: Hoare triple {20106#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {20055#false} is VALID [2022-04-15 06:18:38,727 INFO L290 TraceCheckUtils]: 11: Hoare triple {20102#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {20106#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:18:38,727 INFO L272 TraceCheckUtils]: 10: Hoare triple {20062#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {20102#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:18:38,728 INFO L290 TraceCheckUtils]: 9: Hoare triple {20061#(or (<= main_~x~0 99) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [213] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {20062#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:18:38,729 INFO L290 TraceCheckUtils]: 8: Hoare triple {20128#(and (or (and (or (<= main_~x~0 main_~y~0) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0)) (not (<= 50 main_~x~0))) (or (<= main_~x~0 99) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [216] L28-2-->L27-2_primed: Formula: (let ((.cse1 (<= 50 v_main_~x~0_1443)) (.cse0 (= v_main_~x~0_1443 v_main_~x~0_1442))) (or (and .cse0 (= v_main_~y~0_1090 v_main_~y~0_1089)) (let ((.cse2 (+ v_main_~x~0_1443 v_main_~y~0_1089))) (and (< v_main_~y~0_1090 v_main_~y~0_1089) .cse1 (= (+ v_main_~x~0_1442 v_main_~y~0_1090) .cse2) (< .cse2 (+ 101 v_main_~y~0_1090)))) (and (or (not .cse1) (not (< v_main_~x~0_1443 100))) .cse0 (= v_main_~y~0_1089 v_main_~y~0_1090)))) InVars {main_~x~0=v_main_~x~0_1443, main_~y~0=v_main_~y~0_1090} OutVars{main_~x~0=v_main_~x~0_1442, main_~y~0=v_main_~y~0_1089} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {20061#(or (<= main_~x~0 99) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:18:38,729 INFO L290 TraceCheckUtils]: 7: Hoare triple {20128#(and (or (and (or (<= main_~x~0 main_~y~0) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0)) (not (<= 50 main_~x~0))) (or (<= main_~x~0 99) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [215] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {20128#(and (or (and (or (<= main_~x~0 main_~y~0) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0)) (not (<= 50 main_~x~0))) (or (<= main_~x~0 99) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:18:38,730 INFO L290 TraceCheckUtils]: 6: Hoare triple {20135#(and (<= 50 main_~y~0) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (and (or (<= main_~x~0 main_~y~0) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0)) (not (<= 50 main_~x~0))) (or (<= main_~x~0 99) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [214] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1441 v_main_~x~0_1440))) (or (and .cse0 (not (< v_main_~x~0_1441 50))) (and (< v_main_~x~0_1441 v_main_~x~0_1440) (< v_main_~x~0_1440 51)) .cse0)) InVars {main_~x~0=v_main_~x~0_1441} OutVars{main_~x~0=v_main_~x~0_1440} AuxVars[] AssignedVars[main_~x~0] {20128#(and (or (and (or (<= main_~x~0 main_~y~0) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0)) (not (<= 50 main_~x~0))) (or (<= main_~x~0 99) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:18:38,730 INFO L290 TraceCheckUtils]: 5: Hoare triple {20054#true} ~x~0 := 0;~y~0 := 50; {20135#(and (<= 50 main_~y~0) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (and (or (<= main_~x~0 main_~y~0) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0)) (not (<= 50 main_~x~0))) (or (<= main_~x~0 99) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:18:38,730 INFO L272 TraceCheckUtils]: 4: Hoare triple {20054#true} call #t~ret1 := main(); {20054#true} is VALID [2022-04-15 06:18:38,731 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {20054#true} {20054#true} #56#return; {20054#true} is VALID [2022-04-15 06:18:38,731 INFO L290 TraceCheckUtils]: 2: Hoare triple {20054#true} assume true; {20054#true} is VALID [2022-04-15 06:18:38,731 INFO L290 TraceCheckUtils]: 1: Hoare triple {20054#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {20054#true} is VALID [2022-04-15 06:18:38,731 INFO L272 TraceCheckUtils]: 0: Hoare triple {20054#true} call ULTIMATE.init(); {20054#true} is VALID [2022-04-15 06:18:38,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:18:38,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356676748] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:18:38,731 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:18:38,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2022-04-15 06:18:40,536 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:18:40,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1796194224] [2022-04-15 06:18:40,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1796194224] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:18:40,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:18:40,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-04-15 06:18:40,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551266022] [2022-04-15 06:18:40,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:18:40,537 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.891304347826087) internal successors, (87), 45 states have internal predecessors, (87), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2022-04-15 06:18:40,537 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:18:40,537 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 47 states, 46 states have (on average 1.891304347826087) internal successors, (87), 45 states have internal predecessors, (87), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:40,604 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 91 edges. 91 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:18:40,604 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-04-15 06:18:40,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:18:40,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-04-15 06:18:40,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=2882, Unknown=0, NotChecked=0, Total=3192 [2022-04-15 06:18:40,605 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand has 47 states, 46 states have (on average 1.891304347826087) internal successors, (87), 45 states have internal predecessors, (87), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:47,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:18:47,417 INFO L93 Difference]: Finished difference Result 102 states and 107 transitions. [2022-04-15 06:18:47,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-04-15 06:18:47,418 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.891304347826087) internal successors, (87), 45 states have internal predecessors, (87), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2022-04-15 06:18:47,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:18:47,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.891304347826087) internal successors, (87), 45 states have internal predecessors, (87), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:47,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 107 transitions. [2022-04-15 06:18:47,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.891304347826087) internal successors, (87), 45 states have internal predecessors, (87), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:47,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 107 transitions. [2022-04-15 06:18:47,421 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 44 states and 107 transitions. [2022-04-15 06:18:47,516 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 107 edges. 107 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:18:47,517 INFO L225 Difference]: With dead ends: 102 [2022-04-15 06:18:47,517 INFO L226 Difference]: Without dead ends: 95 [2022-04-15 06:18:47,517 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1796 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=644, Invalid=8862, Unknown=0, NotChecked=0, Total=9506 [2022-04-15 06:18:47,518 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 49 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 3831 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 3877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 3831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-04-15 06:18:47,518 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 228 Invalid, 3877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 3831 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-04-15 06:18:47,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-04-15 06:18:47,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-04-15 06:18:47,673 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:18:47,673 INFO L82 GeneralOperation]: Start isEquivalent. First operand 95 states. Second operand has 95 states, 90 states have (on average 1.0333333333333334) internal successors, (93), 90 states have internal predecessors, (93), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:47,673 INFO L74 IsIncluded]: Start isIncluded. First operand 95 states. Second operand has 95 states, 90 states have (on average 1.0333333333333334) internal successors, (93), 90 states have internal predecessors, (93), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:47,673 INFO L87 Difference]: Start difference. First operand 95 states. Second operand has 95 states, 90 states have (on average 1.0333333333333334) internal successors, (93), 90 states have internal predecessors, (93), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:47,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:18:47,674 INFO L93 Difference]: Finished difference Result 95 states and 97 transitions. [2022-04-15 06:18:47,674 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2022-04-15 06:18:47,674 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:18:47,675 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:18:47,675 INFO L74 IsIncluded]: Start isIncluded. First operand has 95 states, 90 states have (on average 1.0333333333333334) internal successors, (93), 90 states have internal predecessors, (93), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 95 states. [2022-04-15 06:18:47,675 INFO L87 Difference]: Start difference. First operand has 95 states, 90 states have (on average 1.0333333333333334) internal successors, (93), 90 states have internal predecessors, (93), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 95 states. [2022-04-15 06:18:47,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:18:47,676 INFO L93 Difference]: Finished difference Result 95 states and 97 transitions. [2022-04-15 06:18:47,676 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2022-04-15 06:18:47,676 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:18:47,676 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:18:47,676 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:18:47,676 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:18:47,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 90 states have (on average 1.0333333333333334) internal successors, (93), 90 states have internal predecessors, (93), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:47,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2022-04-15 06:18:47,678 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 91 [2022-04-15 06:18:47,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:18:47,678 INFO L478 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2022-04-15 06:18:47,678 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.891304347826087) internal successors, (87), 45 states have internal predecessors, (87), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:47,678 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 95 states and 97 transitions. [2022-04-15 06:18:47,757 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 97 edges. 97 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:18:47,758 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2022-04-15 06:18:47,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-04-15 06:18:47,758 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:18:47,758 INFO L499 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:18:47,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-04-15 06:18:47,963 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-04-15 06:18:47,963 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:18:47,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:18:47,964 INFO L85 PathProgramCache]: Analyzing trace with hash 291005419, now seen corresponding path program 40 times [2022-04-15 06:18:47,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:18:47,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1949836573] [2022-04-15 06:18:51,924 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-15 06:18:51,976 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:18:52,219 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:18:52,220 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:18:52,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1583200716, now seen corresponding path program 1 times [2022-04-15 06:18:52,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:18:52,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447361776] [2022-04-15 06:18:52,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:18:52,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:18:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:18:52,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:18:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:18:52,338 INFO L290 TraceCheckUtils]: 0: Hoare triple {20874#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {20863#true} is VALID [2022-04-15 06:18:52,338 INFO L290 TraceCheckUtils]: 1: Hoare triple {20863#true} assume true; {20863#true} is VALID [2022-04-15 06:18:52,338 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {20863#true} {20863#true} #56#return; {20863#true} is VALID [2022-04-15 06:18:52,339 INFO L272 TraceCheckUtils]: 0: Hoare triple {20863#true} call ULTIMATE.init(); {20874#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:18:52,339 INFO L290 TraceCheckUtils]: 1: Hoare triple {20874#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {20863#true} is VALID [2022-04-15 06:18:52,339 INFO L290 TraceCheckUtils]: 2: Hoare triple {20863#true} assume true; {20863#true} is VALID [2022-04-15 06:18:52,339 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {20863#true} {20863#true} #56#return; {20863#true} is VALID [2022-04-15 06:18:52,339 INFO L272 TraceCheckUtils]: 4: Hoare triple {20863#true} call #t~ret1 := main(); {20863#true} is VALID [2022-04-15 06:18:52,339 INFO L290 TraceCheckUtils]: 5: Hoare triple {20863#true} ~x~0 := 0;~y~0 := 50; {20868#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:18:52,340 INFO L290 TraceCheckUtils]: 6: Hoare triple {20868#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [218] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1498 v_main_~x~0_1497))) (or .cse0 (and (< v_main_~x~0_1497 51) (< v_main_~x~0_1498 v_main_~x~0_1497)) (and .cse0 (not (< v_main_~x~0_1498 50))))) InVars {main_~x~0=v_main_~x~0_1498} OutVars{main_~x~0=v_main_~x~0_1497} AuxVars[] AssignedVars[main_~x~0] {20869#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:18:52,341 INFO L290 TraceCheckUtils]: 7: Hoare triple {20869#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [219] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {20869#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:18:52,342 INFO L290 TraceCheckUtils]: 8: Hoare triple {20869#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [220] L28-2-->L27-2_primed: Formula: (let ((.cse1 (<= 50 v_main_~x~0_1500)) (.cse2 (= v_main_~x~0_1500 v_main_~x~0_1499)) (.cse3 (= v_main_~y~0_1138 v_main_~y~0_1137))) (or (let ((.cse0 (+ v_main_~x~0_1500 v_main_~y~0_1137))) (and (< v_main_~y~0_1138 v_main_~y~0_1137) (< .cse0 (+ 101 v_main_~y~0_1138)) .cse1 (= .cse0 (+ v_main_~x~0_1499 v_main_~y~0_1138)))) (and .cse2 .cse3 (or (not .cse1) (not (< v_main_~x~0_1500 100)))) (and .cse2 .cse3))) InVars {main_~x~0=v_main_~x~0_1500, main_~y~0=v_main_~y~0_1138} OutVars{main_~x~0=v_main_~x~0_1499, main_~y~0=v_main_~y~0_1137} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {20870#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:18:52,343 INFO L290 TraceCheckUtils]: 9: Hoare triple {20870#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [217] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {20871#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:18:52,343 INFO L272 TraceCheckUtils]: 10: Hoare triple {20871#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {20872#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:18:52,344 INFO L290 TraceCheckUtils]: 11: Hoare triple {20872#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {20873#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:18:52,344 INFO L290 TraceCheckUtils]: 12: Hoare triple {20873#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {20864#false} is VALID [2022-04-15 06:18:52,344 INFO L290 TraceCheckUtils]: 13: Hoare triple {20864#false} assume !false; {20864#false} is VALID [2022-04-15 06:18:52,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:18:52,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:18:52,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447361776] [2022-04-15 06:18:52,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447361776] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:18:52,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273135100] [2022-04-15 06:18:52,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:18:52,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:18:52,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:18:52,347 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:18:52,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-04-15 06:18:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:18:52,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:18:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:18:52,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:18:52,754 INFO L272 TraceCheckUtils]: 0: Hoare triple {20863#true} call ULTIMATE.init(); {20863#true} is VALID [2022-04-15 06:18:52,754 INFO L290 TraceCheckUtils]: 1: Hoare triple {20863#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {20863#true} is VALID [2022-04-15 06:18:52,754 INFO L290 TraceCheckUtils]: 2: Hoare triple {20863#true} assume true; {20863#true} is VALID [2022-04-15 06:18:52,754 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {20863#true} {20863#true} #56#return; {20863#true} is VALID [2022-04-15 06:18:52,754 INFO L272 TraceCheckUtils]: 4: Hoare triple {20863#true} call #t~ret1 := main(); {20863#true} is VALID [2022-04-15 06:18:52,755 INFO L290 TraceCheckUtils]: 5: Hoare triple {20863#true} ~x~0 := 0;~y~0 := 50; {20893#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:18:52,755 INFO L290 TraceCheckUtils]: 6: Hoare triple {20893#(and (<= main_~x~0 0) (= main_~y~0 50))} [218] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1498 v_main_~x~0_1497))) (or .cse0 (and (< v_main_~x~0_1497 51) (< v_main_~x~0_1498 v_main_~x~0_1497)) (and .cse0 (not (< v_main_~x~0_1498 50))))) InVars {main_~x~0=v_main_~x~0_1498} OutVars{main_~x~0=v_main_~x~0_1497} AuxVars[] AssignedVars[main_~x~0] {20897#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:18:52,756 INFO L290 TraceCheckUtils]: 7: Hoare triple {20897#(and (= main_~y~0 50) (< main_~x~0 51))} [219] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {20897#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:18:52,757 INFO L290 TraceCheckUtils]: 8: Hoare triple {20897#(and (= main_~y~0 50) (< main_~x~0 51))} [220] L28-2-->L27-2_primed: Formula: (let ((.cse1 (<= 50 v_main_~x~0_1500)) (.cse2 (= v_main_~x~0_1500 v_main_~x~0_1499)) (.cse3 (= v_main_~y~0_1138 v_main_~y~0_1137))) (or (let ((.cse0 (+ v_main_~x~0_1500 v_main_~y~0_1137))) (and (< v_main_~y~0_1138 v_main_~y~0_1137) (< .cse0 (+ 101 v_main_~y~0_1138)) .cse1 (= .cse0 (+ v_main_~x~0_1499 v_main_~y~0_1138)))) (and .cse2 .cse3 (or (not .cse1) (not (< v_main_~x~0_1500 100)))) (and .cse2 .cse3))) InVars {main_~x~0=v_main_~x~0_1500, main_~y~0=v_main_~y~0_1138} OutVars{main_~x~0=v_main_~x~0_1499, main_~y~0=v_main_~y~0_1137} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {20904#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:18:52,757 INFO L290 TraceCheckUtils]: 9: Hoare triple {20904#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [217] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {20871#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:18:52,758 INFO L272 TraceCheckUtils]: 10: Hoare triple {20871#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {20911#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:18:52,758 INFO L290 TraceCheckUtils]: 11: Hoare triple {20911#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {20915#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:18:52,759 INFO L290 TraceCheckUtils]: 12: Hoare triple {20915#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {20864#false} is VALID [2022-04-15 06:18:52,759 INFO L290 TraceCheckUtils]: 13: Hoare triple {20864#false} assume !false; {20864#false} is VALID [2022-04-15 06:18:52,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:18:52,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:18:53,302 INFO L290 TraceCheckUtils]: 13: Hoare triple {20864#false} assume !false; {20864#false} is VALID [2022-04-15 06:18:53,303 INFO L290 TraceCheckUtils]: 12: Hoare triple {20915#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {20864#false} is VALID [2022-04-15 06:18:53,303 INFO L290 TraceCheckUtils]: 11: Hoare triple {20911#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {20915#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:18:53,304 INFO L272 TraceCheckUtils]: 10: Hoare triple {20871#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {20911#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:18:53,304 INFO L290 TraceCheckUtils]: 9: Hoare triple {20934#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [217] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {20871#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:18:53,306 INFO L290 TraceCheckUtils]: 8: Hoare triple {20938#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [220] L28-2-->L27-2_primed: Formula: (let ((.cse1 (<= 50 v_main_~x~0_1500)) (.cse2 (= v_main_~x~0_1500 v_main_~x~0_1499)) (.cse3 (= v_main_~y~0_1138 v_main_~y~0_1137))) (or (let ((.cse0 (+ v_main_~x~0_1500 v_main_~y~0_1137))) (and (< v_main_~y~0_1138 v_main_~y~0_1137) (< .cse0 (+ 101 v_main_~y~0_1138)) .cse1 (= .cse0 (+ v_main_~x~0_1499 v_main_~y~0_1138)))) (and .cse2 .cse3 (or (not .cse1) (not (< v_main_~x~0_1500 100)))) (and .cse2 .cse3))) InVars {main_~x~0=v_main_~x~0_1500, main_~y~0=v_main_~y~0_1138} OutVars{main_~x~0=v_main_~x~0_1499, main_~y~0=v_main_~y~0_1137} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {20934#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:18:53,306 INFO L290 TraceCheckUtils]: 7: Hoare triple {20938#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [219] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {20938#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:18:53,307 INFO L290 TraceCheckUtils]: 6: Hoare triple {20945#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= 50 main_~y~0) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [218] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1498 v_main_~x~0_1497))) (or .cse0 (and (< v_main_~x~0_1497 51) (< v_main_~x~0_1498 v_main_~x~0_1497)) (and .cse0 (not (< v_main_~x~0_1498 50))))) InVars {main_~x~0=v_main_~x~0_1498} OutVars{main_~x~0=v_main_~x~0_1497} AuxVars[] AssignedVars[main_~x~0] {20938#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:18:53,308 INFO L290 TraceCheckUtils]: 5: Hoare triple {20863#true} ~x~0 := 0;~y~0 := 50; {20945#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= 50 main_~y~0) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:18:53,308 INFO L272 TraceCheckUtils]: 4: Hoare triple {20863#true} call #t~ret1 := main(); {20863#true} is VALID [2022-04-15 06:18:53,308 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {20863#true} {20863#true} #56#return; {20863#true} is VALID [2022-04-15 06:18:53,308 INFO L290 TraceCheckUtils]: 2: Hoare triple {20863#true} assume true; {20863#true} is VALID [2022-04-15 06:18:53,308 INFO L290 TraceCheckUtils]: 1: Hoare triple {20863#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {20863#true} is VALID [2022-04-15 06:18:53,308 INFO L272 TraceCheckUtils]: 0: Hoare triple {20863#true} call ULTIMATE.init(); {20863#true} is VALID [2022-04-15 06:18:53,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:18:53,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273135100] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:18:53,309 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:18:53,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:18:55,666 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:18:55,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1949836573] [2022-04-15 06:18:55,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1949836573] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:18:55,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:18:55,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-04-15 06:18:55,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531393200] [2022-04-15 06:18:55,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:18:55,667 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.8936170212765957) internal successors, (89), 46 states have internal predecessors, (89), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2022-04-15 06:18:55,667 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:18:55,667 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 48 states, 47 states have (on average 1.8936170212765957) internal successors, (89), 46 states have internal predecessors, (89), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:18:55,753 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 93 edges. 93 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:18:55,753 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-04-15 06:18:55,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:18:55,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-04-15 06:18:55,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=3053, Unknown=0, NotChecked=0, Total=3422 [2022-04-15 06:18:55,754 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand has 48 states, 47 states have (on average 1.8936170212765957) internal successors, (89), 46 states have internal predecessors, (89), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:03,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:19:03,520 INFO L93 Difference]: Finished difference Result 104 states and 109 transitions. [2022-04-15 06:19:03,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-04-15 06:19:03,520 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.8936170212765957) internal successors, (89), 46 states have internal predecessors, (89), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2022-04-15 06:19:03,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:19:03,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.8936170212765957) internal successors, (89), 46 states have internal predecessors, (89), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:03,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 109 transitions. [2022-04-15 06:19:03,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.8936170212765957) internal successors, (89), 46 states have internal predecessors, (89), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:03,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 109 transitions. [2022-04-15 06:19:03,522 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 45 states and 109 transitions. [2022-04-15 06:19:03,634 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 109 edges. 109 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:19:03,635 INFO L225 Difference]: With dead ends: 104 [2022-04-15 06:19:03,635 INFO L226 Difference]: Without dead ends: 97 [2022-04-15 06:19:03,636 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1953 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=753, Invalid=9347, Unknown=0, NotChecked=0, Total=10100 [2022-04-15 06:19:03,637 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 50 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 4008 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 4055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 4008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-04-15 06:19:03,637 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 233 Invalid, 4055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 4008 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-04-15 06:19:03,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-04-15 06:19:03,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-04-15 06:19:03,886 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:19:03,886 INFO L82 GeneralOperation]: Start isEquivalent. First operand 97 states. Second operand has 97 states, 92 states have (on average 1.0326086956521738) internal successors, (95), 92 states have internal predecessors, (95), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:03,886 INFO L74 IsIncluded]: Start isIncluded. First operand 97 states. Second operand has 97 states, 92 states have (on average 1.0326086956521738) internal successors, (95), 92 states have internal predecessors, (95), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:03,887 INFO L87 Difference]: Start difference. First operand 97 states. Second operand has 97 states, 92 states have (on average 1.0326086956521738) internal successors, (95), 92 states have internal predecessors, (95), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:03,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:19:03,888 INFO L93 Difference]: Finished difference Result 97 states and 99 transitions. [2022-04-15 06:19:03,888 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 99 transitions. [2022-04-15 06:19:03,888 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:19:03,888 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:19:03,888 INFO L74 IsIncluded]: Start isIncluded. First operand has 97 states, 92 states have (on average 1.0326086956521738) internal successors, (95), 92 states have internal predecessors, (95), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 97 states. [2022-04-15 06:19:03,888 INFO L87 Difference]: Start difference. First operand has 97 states, 92 states have (on average 1.0326086956521738) internal successors, (95), 92 states have internal predecessors, (95), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 97 states. [2022-04-15 06:19:03,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:19:03,889 INFO L93 Difference]: Finished difference Result 97 states and 99 transitions. [2022-04-15 06:19:03,889 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 99 transitions. [2022-04-15 06:19:03,890 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:19:03,890 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:19:03,890 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:19:03,890 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:19:03,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 1.0326086956521738) internal successors, (95), 92 states have internal predecessors, (95), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:03,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 99 transitions. [2022-04-15 06:19:03,893 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 99 transitions. Word has length 93 [2022-04-15 06:19:03,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:19:03,893 INFO L478 AbstractCegarLoop]: Abstraction has 97 states and 99 transitions. [2022-04-15 06:19:03,894 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.8936170212765957) internal successors, (89), 46 states have internal predecessors, (89), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:03,894 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 97 states and 99 transitions. [2022-04-15 06:19:03,986 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 99 edges. 99 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:19:03,986 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 99 transitions. [2022-04-15 06:19:03,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-04-15 06:19:03,987 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:19:03,987 INFO L499 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:19:04,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-04-15 06:19:04,187 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-04-15 06:19:04,187 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:19:04,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:19:04,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1553005702, now seen corresponding path program 41 times [2022-04-15 06:19:04,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:19:04,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [12149406] [2022-04-15 06:19:04,293 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:19:04,521 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:19:04,523 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:19:04,525 INFO L85 PathProgramCache]: Analyzing trace with hash -662234420, now seen corresponding path program 1 times [2022-04-15 06:19:04,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:19:04,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086955525] [2022-04-15 06:19:04,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:19:04,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:19:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:19:04,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:19:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:19:04,651 INFO L290 TraceCheckUtils]: 0: Hoare triple {21699#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {21688#true} is VALID [2022-04-15 06:19:04,651 INFO L290 TraceCheckUtils]: 1: Hoare triple {21688#true} assume true; {21688#true} is VALID [2022-04-15 06:19:04,651 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {21688#true} {21688#true} #56#return; {21688#true} is VALID [2022-04-15 06:19:04,652 INFO L272 TraceCheckUtils]: 0: Hoare triple {21688#true} call ULTIMATE.init(); {21699#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:19:04,652 INFO L290 TraceCheckUtils]: 1: Hoare triple {21699#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {21688#true} is VALID [2022-04-15 06:19:04,652 INFO L290 TraceCheckUtils]: 2: Hoare triple {21688#true} assume true; {21688#true} is VALID [2022-04-15 06:19:04,652 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {21688#true} {21688#true} #56#return; {21688#true} is VALID [2022-04-15 06:19:04,652 INFO L272 TraceCheckUtils]: 4: Hoare triple {21688#true} call #t~ret1 := main(); {21688#true} is VALID [2022-04-15 06:19:04,653 INFO L290 TraceCheckUtils]: 5: Hoare triple {21688#true} ~x~0 := 0;~y~0 := 50; {21693#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:19:04,653 INFO L290 TraceCheckUtils]: 6: Hoare triple {21693#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [222] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1556 v_main_~x~0_1555))) (or .cse0 (and (not (< v_main_~x~0_1556 50)) .cse0) (and (< v_main_~x~0_1556 v_main_~x~0_1555) (< v_main_~x~0_1555 51)))) InVars {main_~x~0=v_main_~x~0_1556} OutVars{main_~x~0=v_main_~x~0_1555} AuxVars[] AssignedVars[main_~x~0] {21694#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:19:04,654 INFO L290 TraceCheckUtils]: 7: Hoare triple {21694#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [223] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {21694#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:19:04,655 INFO L290 TraceCheckUtils]: 8: Hoare triple {21694#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [224] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1558 v_main_~x~0_1557)) (.cse3 (<= 50 v_main_~x~0_1558)) (.cse1 (= v_main_~y~0_1187 v_main_~y~0_1186))) (or (and .cse0 .cse1) (let ((.cse2 (+ v_main_~x~0_1558 v_main_~y~0_1186))) (and (< v_main_~y~0_1187 v_main_~y~0_1186) (< .cse2 (+ 101 v_main_~y~0_1187)) (= .cse2 (+ v_main_~x~0_1557 v_main_~y~0_1187)) .cse3)) (and .cse0 (or (not (< v_main_~x~0_1558 100)) (not .cse3)) .cse1))) InVars {main_~x~0=v_main_~x~0_1558, main_~y~0=v_main_~y~0_1187} OutVars{main_~x~0=v_main_~x~0_1557, main_~y~0=v_main_~y~0_1186} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {21695#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:19:04,656 INFO L290 TraceCheckUtils]: 9: Hoare triple {21695#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [221] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {21696#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:19:04,656 INFO L272 TraceCheckUtils]: 10: Hoare triple {21696#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {21697#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:19:04,657 INFO L290 TraceCheckUtils]: 11: Hoare triple {21697#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {21698#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:19:04,657 INFO L290 TraceCheckUtils]: 12: Hoare triple {21698#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {21689#false} is VALID [2022-04-15 06:19:04,657 INFO L290 TraceCheckUtils]: 13: Hoare triple {21689#false} assume !false; {21689#false} is VALID [2022-04-15 06:19:04,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:19:04,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:19:04,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086955525] [2022-04-15 06:19:04,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086955525] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:19:04,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431274887] [2022-04-15 06:19:04,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:19:04,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:19:04,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:19:04,659 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:19:04,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-04-15 06:19:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:19:04,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:19:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:19:04,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:19:05,089 INFO L272 TraceCheckUtils]: 0: Hoare triple {21688#true} call ULTIMATE.init(); {21688#true} is VALID [2022-04-15 06:19:05,089 INFO L290 TraceCheckUtils]: 1: Hoare triple {21688#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {21688#true} is VALID [2022-04-15 06:19:05,089 INFO L290 TraceCheckUtils]: 2: Hoare triple {21688#true} assume true; {21688#true} is VALID [2022-04-15 06:19:05,089 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {21688#true} {21688#true} #56#return; {21688#true} is VALID [2022-04-15 06:19:05,089 INFO L272 TraceCheckUtils]: 4: Hoare triple {21688#true} call #t~ret1 := main(); {21688#true} is VALID [2022-04-15 06:19:05,090 INFO L290 TraceCheckUtils]: 5: Hoare triple {21688#true} ~x~0 := 0;~y~0 := 50; {21718#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:19:05,090 INFO L290 TraceCheckUtils]: 6: Hoare triple {21718#(and (<= main_~x~0 0) (= main_~y~0 50))} [222] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1556 v_main_~x~0_1555))) (or .cse0 (and (not (< v_main_~x~0_1556 50)) .cse0) (and (< v_main_~x~0_1556 v_main_~x~0_1555) (< v_main_~x~0_1555 51)))) InVars {main_~x~0=v_main_~x~0_1556} OutVars{main_~x~0=v_main_~x~0_1555} AuxVars[] AssignedVars[main_~x~0] {21722#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:19:05,091 INFO L290 TraceCheckUtils]: 7: Hoare triple {21722#(and (= main_~y~0 50) (< main_~x~0 51))} [223] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {21722#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:19:05,092 INFO L290 TraceCheckUtils]: 8: Hoare triple {21722#(and (= main_~y~0 50) (< main_~x~0 51))} [224] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1558 v_main_~x~0_1557)) (.cse3 (<= 50 v_main_~x~0_1558)) (.cse1 (= v_main_~y~0_1187 v_main_~y~0_1186))) (or (and .cse0 .cse1) (let ((.cse2 (+ v_main_~x~0_1558 v_main_~y~0_1186))) (and (< v_main_~y~0_1187 v_main_~y~0_1186) (< .cse2 (+ 101 v_main_~y~0_1187)) (= .cse2 (+ v_main_~x~0_1557 v_main_~y~0_1187)) .cse3)) (and .cse0 (or (not (< v_main_~x~0_1558 100)) (not .cse3)) .cse1))) InVars {main_~x~0=v_main_~x~0_1558, main_~y~0=v_main_~y~0_1187} OutVars{main_~x~0=v_main_~x~0_1557, main_~y~0=v_main_~y~0_1186} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {21729#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:19:05,093 INFO L290 TraceCheckUtils]: 9: Hoare triple {21729#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [221] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {21696#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:19:05,093 INFO L272 TraceCheckUtils]: 10: Hoare triple {21696#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {21736#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:19:05,094 INFO L290 TraceCheckUtils]: 11: Hoare triple {21736#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {21740#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:19:05,094 INFO L290 TraceCheckUtils]: 12: Hoare triple {21740#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {21689#false} is VALID [2022-04-15 06:19:05,094 INFO L290 TraceCheckUtils]: 13: Hoare triple {21689#false} assume !false; {21689#false} is VALID [2022-04-15 06:19:05,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:19:05,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:19:05,617 INFO L290 TraceCheckUtils]: 13: Hoare triple {21689#false} assume !false; {21689#false} is VALID [2022-04-15 06:19:05,618 INFO L290 TraceCheckUtils]: 12: Hoare triple {21740#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {21689#false} is VALID [2022-04-15 06:19:05,618 INFO L290 TraceCheckUtils]: 11: Hoare triple {21736#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {21740#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:19:05,619 INFO L272 TraceCheckUtils]: 10: Hoare triple {21696#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {21736#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:19:05,620 INFO L290 TraceCheckUtils]: 9: Hoare triple {21759#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [221] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {21696#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:19:05,621 INFO L290 TraceCheckUtils]: 8: Hoare triple {21763#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [224] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1558 v_main_~x~0_1557)) (.cse3 (<= 50 v_main_~x~0_1558)) (.cse1 (= v_main_~y~0_1187 v_main_~y~0_1186))) (or (and .cse0 .cse1) (let ((.cse2 (+ v_main_~x~0_1558 v_main_~y~0_1186))) (and (< v_main_~y~0_1187 v_main_~y~0_1186) (< .cse2 (+ 101 v_main_~y~0_1187)) (= .cse2 (+ v_main_~x~0_1557 v_main_~y~0_1187)) .cse3)) (and .cse0 (or (not (< v_main_~x~0_1558 100)) (not .cse3)) .cse1))) InVars {main_~x~0=v_main_~x~0_1558, main_~y~0=v_main_~y~0_1187} OutVars{main_~x~0=v_main_~x~0_1557, main_~y~0=v_main_~y~0_1186} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {21759#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:19:05,621 INFO L290 TraceCheckUtils]: 7: Hoare triple {21763#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [223] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {21763#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:19:05,622 INFO L290 TraceCheckUtils]: 6: Hoare triple {21770#(and (<= 50 main_~y~0) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [222] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1556 v_main_~x~0_1555))) (or .cse0 (and (not (< v_main_~x~0_1556 50)) .cse0) (and (< v_main_~x~0_1556 v_main_~x~0_1555) (< v_main_~x~0_1555 51)))) InVars {main_~x~0=v_main_~x~0_1556} OutVars{main_~x~0=v_main_~x~0_1555} AuxVars[] AssignedVars[main_~x~0] {21763#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:19:05,623 INFO L290 TraceCheckUtils]: 5: Hoare triple {21688#true} ~x~0 := 0;~y~0 := 50; {21770#(and (<= 50 main_~y~0) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:19:05,623 INFO L272 TraceCheckUtils]: 4: Hoare triple {21688#true} call #t~ret1 := main(); {21688#true} is VALID [2022-04-15 06:19:05,623 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {21688#true} {21688#true} #56#return; {21688#true} is VALID [2022-04-15 06:19:05,623 INFO L290 TraceCheckUtils]: 2: Hoare triple {21688#true} assume true; {21688#true} is VALID [2022-04-15 06:19:05,623 INFO L290 TraceCheckUtils]: 1: Hoare triple {21688#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {21688#true} is VALID [2022-04-15 06:19:05,623 INFO L272 TraceCheckUtils]: 0: Hoare triple {21688#true} call ULTIMATE.init(); {21688#true} is VALID [2022-04-15 06:19:05,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:19:05,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431274887] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:19:05,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:19:05,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:19:08,015 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:19:08,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [12149406] [2022-04-15 06:19:08,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [12149406] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:19:08,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:19:08,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-04-15 06:19:08,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994920847] [2022-04-15 06:19:08,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:19:08,016 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 47 states have internal predecessors, (91), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2022-04-15 06:19:08,016 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:19:08,016 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 49 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 47 states have internal predecessors, (91), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:08,108 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 95 edges. 95 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:19:08,108 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-04-15 06:19:08,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:19:08,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-04-15 06:19:08,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=3164, Unknown=0, NotChecked=0, Total=3540 [2022-04-15 06:19:08,109 INFO L87 Difference]: Start difference. First operand 97 states and 99 transitions. Second operand has 49 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 47 states have internal predecessors, (91), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:15,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:19:15,763 INFO L93 Difference]: Finished difference Result 106 states and 111 transitions. [2022-04-15 06:19:15,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-04-15 06:19:15,764 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 47 states have internal predecessors, (91), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2022-04-15 06:19:15,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:19:15,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 47 states have internal predecessors, (91), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:15,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 111 transitions. [2022-04-15 06:19:15,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 47 states have internal predecessors, (91), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:15,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 111 transitions. [2022-04-15 06:19:15,766 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 46 states and 111 transitions. [2022-04-15 06:19:15,876 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 111 edges. 111 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:19:15,877 INFO L225 Difference]: With dead ends: 106 [2022-04-15 06:19:15,877 INFO L226 Difference]: Without dead ends: 99 [2022-04-15 06:19:15,878 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 61 SyntacticMatches, 4 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2019 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=769, Invalid=9737, Unknown=0, NotChecked=0, Total=10506 [2022-04-15 06:19:15,878 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 51 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 4189 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 4237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 4189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-04-15 06:19:15,879 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 238 Invalid, 4237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 4189 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-04-15 06:19:15,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-04-15 06:19:16,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-04-15 06:19:16,029 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:19:16,030 INFO L82 GeneralOperation]: Start isEquivalent. First operand 99 states. Second operand has 99 states, 94 states have (on average 1.0319148936170213) internal successors, (97), 94 states have internal predecessors, (97), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:16,030 INFO L74 IsIncluded]: Start isIncluded. First operand 99 states. Second operand has 99 states, 94 states have (on average 1.0319148936170213) internal successors, (97), 94 states have internal predecessors, (97), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:16,030 INFO L87 Difference]: Start difference. First operand 99 states. Second operand has 99 states, 94 states have (on average 1.0319148936170213) internal successors, (97), 94 states have internal predecessors, (97), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:16,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:19:16,031 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2022-04-15 06:19:16,031 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2022-04-15 06:19:16,031 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:19:16,031 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:19:16,032 INFO L74 IsIncluded]: Start isIncluded. First operand has 99 states, 94 states have (on average 1.0319148936170213) internal successors, (97), 94 states have internal predecessors, (97), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 99 states. [2022-04-15 06:19:16,032 INFO L87 Difference]: Start difference. First operand has 99 states, 94 states have (on average 1.0319148936170213) internal successors, (97), 94 states have internal predecessors, (97), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 99 states. [2022-04-15 06:19:16,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:19:16,033 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2022-04-15 06:19:16,033 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2022-04-15 06:19:16,033 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:19:16,033 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:19:16,033 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:19:16,033 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:19:16,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 94 states have (on average 1.0319148936170213) internal successors, (97), 94 states have internal predecessors, (97), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:16,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2022-04-15 06:19:16,034 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 95 [2022-04-15 06:19:16,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:19:16,035 INFO L478 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2022-04-15 06:19:16,035 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 47 states have internal predecessors, (91), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:16,035 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 99 states and 101 transitions. [2022-04-15 06:19:16,114 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 101 edges. 101 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:19:16,115 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2022-04-15 06:19:16,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-04-15 06:19:16,115 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:19:16,115 INFO L499 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:19:16,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-04-15 06:19:16,319 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:19:16,319 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:19:16,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:19:16,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1140467103, now seen corresponding path program 42 times [2022-04-15 06:19:16,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:19:16,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1645615250] [2022-04-15 06:19:20,390 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-15 06:19:20,456 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:19:20,736 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:19:20,737 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:19:20,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1387297740, now seen corresponding path program 1 times [2022-04-15 06:19:20,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:19:20,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912529520] [2022-04-15 06:19:20,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:19:20,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:19:20,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:19:21,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:19:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:19:21,057 INFO L290 TraceCheckUtils]: 0: Hoare triple {22539#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {22528#true} is VALID [2022-04-15 06:19:21,057 INFO L290 TraceCheckUtils]: 1: Hoare triple {22528#true} assume true; {22528#true} is VALID [2022-04-15 06:19:21,057 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {22528#true} {22528#true} #56#return; {22528#true} is VALID [2022-04-15 06:19:21,058 INFO L272 TraceCheckUtils]: 0: Hoare triple {22528#true} call ULTIMATE.init(); {22539#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:19:21,058 INFO L290 TraceCheckUtils]: 1: Hoare triple {22539#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {22528#true} is VALID [2022-04-15 06:19:21,058 INFO L290 TraceCheckUtils]: 2: Hoare triple {22528#true} assume true; {22528#true} is VALID [2022-04-15 06:19:21,058 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {22528#true} {22528#true} #56#return; {22528#true} is VALID [2022-04-15 06:19:21,058 INFO L272 TraceCheckUtils]: 4: Hoare triple {22528#true} call #t~ret1 := main(); {22528#true} is VALID [2022-04-15 06:19:21,059 INFO L290 TraceCheckUtils]: 5: Hoare triple {22528#true} ~x~0 := 0;~y~0 := 50; {22533#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:19:21,059 INFO L290 TraceCheckUtils]: 6: Hoare triple {22533#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [226] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1615 v_main_~x~0_1614))) (or .cse0 (and (< v_main_~x~0_1615 v_main_~x~0_1614) (< v_main_~x~0_1614 51)) (and .cse0 (not (< v_main_~x~0_1615 50))))) InVars {main_~x~0=v_main_~x~0_1615} OutVars{main_~x~0=v_main_~x~0_1614} AuxVars[] AssignedVars[main_~x~0] {22534#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:19:21,060 INFO L290 TraceCheckUtils]: 7: Hoare triple {22534#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [227] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {22534#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:19:21,061 INFO L290 TraceCheckUtils]: 8: Hoare triple {22534#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [228] L28-2-->L27-2_primed: Formula: (let ((.cse2 (<= 50 v_main_~x~0_1617)) (.cse0 (= v_main_~y~0_1237 v_main_~y~0_1236)) (.cse1 (= v_main_~x~0_1617 v_main_~x~0_1616))) (or (and .cse0 .cse1) (let ((.cse3 (+ v_main_~x~0_1617 v_main_~y~0_1236))) (and (< v_main_~y~0_1237 v_main_~y~0_1236) .cse2 (= .cse3 (+ v_main_~x~0_1616 v_main_~y~0_1237)) (< .cse3 (+ 101 v_main_~y~0_1237)))) (and (or (not (< v_main_~x~0_1617 100)) (not .cse2)) .cse0 .cse1))) InVars {main_~x~0=v_main_~x~0_1617, main_~y~0=v_main_~y~0_1237} OutVars{main_~x~0=v_main_~x~0_1616, main_~y~0=v_main_~y~0_1236} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {22535#(or (and (or (< 99 main_~y~0) (<= main_~x~0 main_~y~0)) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:19:21,062 INFO L290 TraceCheckUtils]: 9: Hoare triple {22535#(or (and (or (< 99 main_~y~0) (<= main_~x~0 main_~y~0)) (<= main_~y~0 100)) (<= main_~x~0 50))} [225] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {22536#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:19:21,062 INFO L272 TraceCheckUtils]: 10: Hoare triple {22536#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {22537#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:19:21,063 INFO L290 TraceCheckUtils]: 11: Hoare triple {22537#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {22538#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:19:21,063 INFO L290 TraceCheckUtils]: 12: Hoare triple {22538#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {22529#false} is VALID [2022-04-15 06:19:21,063 INFO L290 TraceCheckUtils]: 13: Hoare triple {22529#false} assume !false; {22529#false} is VALID [2022-04-15 06:19:21,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:19:21,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:19:21,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912529520] [2022-04-15 06:19:21,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912529520] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:19:21,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899117960] [2022-04-15 06:19:21,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:19:21,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:19:21,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:19:21,065 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:19:21,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-04-15 06:19:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:19:21,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:19:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:19:21,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:19:21,510 INFO L272 TraceCheckUtils]: 0: Hoare triple {22528#true} call ULTIMATE.init(); {22528#true} is VALID [2022-04-15 06:19:21,511 INFO L290 TraceCheckUtils]: 1: Hoare triple {22528#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {22528#true} is VALID [2022-04-15 06:19:21,511 INFO L290 TraceCheckUtils]: 2: Hoare triple {22528#true} assume true; {22528#true} is VALID [2022-04-15 06:19:21,511 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {22528#true} {22528#true} #56#return; {22528#true} is VALID [2022-04-15 06:19:21,511 INFO L272 TraceCheckUtils]: 4: Hoare triple {22528#true} call #t~ret1 := main(); {22528#true} is VALID [2022-04-15 06:19:21,511 INFO L290 TraceCheckUtils]: 5: Hoare triple {22528#true} ~x~0 := 0;~y~0 := 50; {22558#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:19:21,512 INFO L290 TraceCheckUtils]: 6: Hoare triple {22558#(and (<= main_~x~0 0) (= main_~y~0 50))} [226] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1615 v_main_~x~0_1614))) (or .cse0 (and (< v_main_~x~0_1615 v_main_~x~0_1614) (< v_main_~x~0_1614 51)) (and .cse0 (not (< v_main_~x~0_1615 50))))) InVars {main_~x~0=v_main_~x~0_1615} OutVars{main_~x~0=v_main_~x~0_1614} AuxVars[] AssignedVars[main_~x~0] {22562#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:19:21,512 INFO L290 TraceCheckUtils]: 7: Hoare triple {22562#(and (= main_~y~0 50) (< main_~x~0 51))} [227] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {22562#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:19:21,513 INFO L290 TraceCheckUtils]: 8: Hoare triple {22562#(and (= main_~y~0 50) (< main_~x~0 51))} [228] L28-2-->L27-2_primed: Formula: (let ((.cse2 (<= 50 v_main_~x~0_1617)) (.cse0 (= v_main_~y~0_1237 v_main_~y~0_1236)) (.cse1 (= v_main_~x~0_1617 v_main_~x~0_1616))) (or (and .cse0 .cse1) (let ((.cse3 (+ v_main_~x~0_1617 v_main_~y~0_1236))) (and (< v_main_~y~0_1237 v_main_~y~0_1236) .cse2 (= .cse3 (+ v_main_~x~0_1616 v_main_~y~0_1237)) (< .cse3 (+ 101 v_main_~y~0_1237)))) (and (or (not (< v_main_~x~0_1617 100)) (not .cse2)) .cse0 .cse1))) InVars {main_~x~0=v_main_~x~0_1617, main_~y~0=v_main_~y~0_1237} OutVars{main_~x~0=v_main_~x~0_1616, main_~y~0=v_main_~y~0_1236} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {22569#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:19:21,514 INFO L290 TraceCheckUtils]: 9: Hoare triple {22569#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [225] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {22536#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:19:21,515 INFO L272 TraceCheckUtils]: 10: Hoare triple {22536#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {22576#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:19:21,515 INFO L290 TraceCheckUtils]: 11: Hoare triple {22576#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {22580#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:19:21,515 INFO L290 TraceCheckUtils]: 12: Hoare triple {22580#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {22529#false} is VALID [2022-04-15 06:19:21,516 INFO L290 TraceCheckUtils]: 13: Hoare triple {22529#false} assume !false; {22529#false} is VALID [2022-04-15 06:19:21,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:19:21,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:19:22,040 INFO L290 TraceCheckUtils]: 13: Hoare triple {22529#false} assume !false; {22529#false} is VALID [2022-04-15 06:19:22,041 INFO L290 TraceCheckUtils]: 12: Hoare triple {22580#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {22529#false} is VALID [2022-04-15 06:19:22,041 INFO L290 TraceCheckUtils]: 11: Hoare triple {22576#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {22580#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:19:22,042 INFO L272 TraceCheckUtils]: 10: Hoare triple {22536#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {22576#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:19:22,042 INFO L290 TraceCheckUtils]: 9: Hoare triple {22599#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [225] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {22536#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:19:22,044 INFO L290 TraceCheckUtils]: 8: Hoare triple {22603#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [228] L28-2-->L27-2_primed: Formula: (let ((.cse2 (<= 50 v_main_~x~0_1617)) (.cse0 (= v_main_~y~0_1237 v_main_~y~0_1236)) (.cse1 (= v_main_~x~0_1617 v_main_~x~0_1616))) (or (and .cse0 .cse1) (let ((.cse3 (+ v_main_~x~0_1617 v_main_~y~0_1236))) (and (< v_main_~y~0_1237 v_main_~y~0_1236) .cse2 (= .cse3 (+ v_main_~x~0_1616 v_main_~y~0_1237)) (< .cse3 (+ 101 v_main_~y~0_1237)))) (and (or (not (< v_main_~x~0_1617 100)) (not .cse2)) .cse0 .cse1))) InVars {main_~x~0=v_main_~x~0_1617, main_~y~0=v_main_~y~0_1237} OutVars{main_~x~0=v_main_~x~0_1616, main_~y~0=v_main_~y~0_1236} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {22599#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:19:22,044 INFO L290 TraceCheckUtils]: 7: Hoare triple {22603#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [227] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {22603#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:19:22,045 INFO L290 TraceCheckUtils]: 6: Hoare triple {22610#(and (<= 50 main_~y~0) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [226] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1615 v_main_~x~0_1614))) (or .cse0 (and (< v_main_~x~0_1615 v_main_~x~0_1614) (< v_main_~x~0_1614 51)) (and .cse0 (not (< v_main_~x~0_1615 50))))) InVars {main_~x~0=v_main_~x~0_1615} OutVars{main_~x~0=v_main_~x~0_1614} AuxVars[] AssignedVars[main_~x~0] {22603#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:19:22,046 INFO L290 TraceCheckUtils]: 5: Hoare triple {22528#true} ~x~0 := 0;~y~0 := 50; {22610#(and (<= 50 main_~y~0) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:19:22,046 INFO L272 TraceCheckUtils]: 4: Hoare triple {22528#true} call #t~ret1 := main(); {22528#true} is VALID [2022-04-15 06:19:22,046 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {22528#true} {22528#true} #56#return; {22528#true} is VALID [2022-04-15 06:19:22,046 INFO L290 TraceCheckUtils]: 2: Hoare triple {22528#true} assume true; {22528#true} is VALID [2022-04-15 06:19:22,046 INFO L290 TraceCheckUtils]: 1: Hoare triple {22528#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {22528#true} is VALID [2022-04-15 06:19:22,046 INFO L272 TraceCheckUtils]: 0: Hoare triple {22528#true} call ULTIMATE.init(); {22528#true} is VALID [2022-04-15 06:19:22,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:19:22,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899117960] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:19:22,047 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:19:22,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:19:24,567 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:19:24,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1645615250] [2022-04-15 06:19:24,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1645615250] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:19:24,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:19:24,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-04-15 06:19:24,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454239303] [2022-04-15 06:19:24,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:19:24,568 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 1.8979591836734695) internal successors, (93), 48 states have internal predecessors, (93), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97 [2022-04-15 06:19:24,569 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:19:24,569 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 50 states, 49 states have (on average 1.8979591836734695) internal successors, (93), 48 states have internal predecessors, (93), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:24,655 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 97 edges. 97 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:19:24,655 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-04-15 06:19:24,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:19:24,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-04-15 06:19:24,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=3277, Unknown=0, NotChecked=0, Total=3660 [2022-04-15 06:19:24,656 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand has 50 states, 49 states have (on average 1.8979591836734695) internal successors, (93), 48 states have internal predecessors, (93), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:33,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:19:33,534 INFO L93 Difference]: Finished difference Result 108 states and 113 transitions. [2022-04-15 06:19:33,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-04-15 06:19:33,534 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 1.8979591836734695) internal successors, (93), 48 states have internal predecessors, (93), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97 [2022-04-15 06:19:33,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:19:33,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.8979591836734695) internal successors, (93), 48 states have internal predecessors, (93), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:33,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 113 transitions. [2022-04-15 06:19:33,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.8979591836734695) internal successors, (93), 48 states have internal predecessors, (93), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:33,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 113 transitions. [2022-04-15 06:19:33,536 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 47 states and 113 transitions. [2022-04-15 06:19:33,638 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 113 edges. 113 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:19:33,639 INFO L225 Difference]: With dead ends: 108 [2022-04-15 06:19:33,639 INFO L226 Difference]: Without dead ends: 101 [2022-04-15 06:19:33,640 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2086 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=785, Invalid=10135, Unknown=0, NotChecked=0, Total=10920 [2022-04-15 06:19:33,640 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 52 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 4374 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 4423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 4374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-04-15 06:19:33,640 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 243 Invalid, 4423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 4374 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-04-15 06:19:33,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-04-15 06:19:33,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2022-04-15 06:19:33,806 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:19:33,807 INFO L82 GeneralOperation]: Start isEquivalent. First operand 101 states. Second operand has 101 states, 96 states have (on average 1.03125) internal successors, (99), 96 states have internal predecessors, (99), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:33,807 INFO L74 IsIncluded]: Start isIncluded. First operand 101 states. Second operand has 101 states, 96 states have (on average 1.03125) internal successors, (99), 96 states have internal predecessors, (99), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:33,807 INFO L87 Difference]: Start difference. First operand 101 states. Second operand has 101 states, 96 states have (on average 1.03125) internal successors, (99), 96 states have internal predecessors, (99), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:33,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:19:33,808 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2022-04-15 06:19:33,808 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2022-04-15 06:19:33,812 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:19:33,812 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:19:33,812 INFO L74 IsIncluded]: Start isIncluded. First operand has 101 states, 96 states have (on average 1.03125) internal successors, (99), 96 states have internal predecessors, (99), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 101 states. [2022-04-15 06:19:33,812 INFO L87 Difference]: Start difference. First operand has 101 states, 96 states have (on average 1.03125) internal successors, (99), 96 states have internal predecessors, (99), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 101 states. [2022-04-15 06:19:33,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:19:33,814 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2022-04-15 06:19:33,814 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2022-04-15 06:19:33,814 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:19:33,814 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:19:33,814 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:19:33,814 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:19:33,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 96 states have (on average 1.03125) internal successors, (99), 96 states have internal predecessors, (99), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:33,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2022-04-15 06:19:33,815 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 97 [2022-04-15 06:19:33,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:19:33,816 INFO L478 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2022-04-15 06:19:33,816 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 1.8979591836734695) internal successors, (93), 48 states have internal predecessors, (93), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:33,816 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 101 states and 103 transitions. [2022-04-15 06:19:33,910 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 103 edges. 103 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:19:33,910 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2022-04-15 06:19:33,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-04-15 06:19:33,910 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:19:33,911 INFO L499 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:19:33,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-04-15 06:19:34,111 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:19:34,111 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:19:34,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:19:34,112 INFO L85 PathProgramCache]: Analyzing trace with hash 297446780, now seen corresponding path program 43 times [2022-04-15 06:19:34,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:19:34,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1112811739] [2022-04-15 06:19:36,294 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:19:36,491 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:19:36,492 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:19:36,494 INFO L85 PathProgramCache]: Analyzing trace with hash -858137396, now seen corresponding path program 1 times [2022-04-15 06:19:36,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:19:36,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851070359] [2022-04-15 06:19:36,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:19:36,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:19:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:19:36,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:19:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:19:36,588 INFO L290 TraceCheckUtils]: 0: Hoare triple {23394#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {23383#true} is VALID [2022-04-15 06:19:36,588 INFO L290 TraceCheckUtils]: 1: Hoare triple {23383#true} assume true; {23383#true} is VALID [2022-04-15 06:19:36,588 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {23383#true} {23383#true} #56#return; {23383#true} is VALID [2022-04-15 06:19:36,589 INFO L272 TraceCheckUtils]: 0: Hoare triple {23383#true} call ULTIMATE.init(); {23394#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:19:36,589 INFO L290 TraceCheckUtils]: 1: Hoare triple {23394#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {23383#true} is VALID [2022-04-15 06:19:36,589 INFO L290 TraceCheckUtils]: 2: Hoare triple {23383#true} assume true; {23383#true} is VALID [2022-04-15 06:19:36,589 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {23383#true} {23383#true} #56#return; {23383#true} is VALID [2022-04-15 06:19:36,589 INFO L272 TraceCheckUtils]: 4: Hoare triple {23383#true} call #t~ret1 := main(); {23383#true} is VALID [2022-04-15 06:19:36,589 INFO L290 TraceCheckUtils]: 5: Hoare triple {23383#true} ~x~0 := 0;~y~0 := 50; {23388#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:19:36,590 INFO L290 TraceCheckUtils]: 6: Hoare triple {23388#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [230] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1675 v_main_~x~0_1674))) (or (and (< v_main_~x~0_1675 v_main_~x~0_1674) (< v_main_~x~0_1674 51)) .cse0 (and .cse0 (not (< v_main_~x~0_1675 50))))) InVars {main_~x~0=v_main_~x~0_1675} OutVars{main_~x~0=v_main_~x~0_1674} AuxVars[] AssignedVars[main_~x~0] {23389#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:19:36,590 INFO L290 TraceCheckUtils]: 7: Hoare triple {23389#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [231] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {23389#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:19:36,591 INFO L290 TraceCheckUtils]: 8: Hoare triple {23389#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [232] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1677 v_main_~x~0_1676)) (.cse1 (= v_main_~y~0_1288 v_main_~y~0_1287)) (.cse2 (<= 50 v_main_~x~0_1677))) (or (and .cse0 .cse1) (let ((.cse3 (+ v_main_~x~0_1677 v_main_~y~0_1287))) (and .cse2 (< v_main_~y~0_1288 v_main_~y~0_1287) (< .cse3 (+ 101 v_main_~y~0_1288)) (= .cse3 (+ v_main_~x~0_1676 v_main_~y~0_1288)))) (and .cse0 .cse1 (or (not (< v_main_~x~0_1677 100)) (not .cse2))))) InVars {main_~x~0=v_main_~x~0_1677, main_~y~0=v_main_~y~0_1288} OutVars{main_~x~0=v_main_~x~0_1676, main_~y~0=v_main_~y~0_1287} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {23390#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:19:36,592 INFO L290 TraceCheckUtils]: 9: Hoare triple {23390#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [229] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {23391#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:19:36,592 INFO L272 TraceCheckUtils]: 10: Hoare triple {23391#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {23392#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:19:36,593 INFO L290 TraceCheckUtils]: 11: Hoare triple {23392#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {23393#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:19:36,593 INFO L290 TraceCheckUtils]: 12: Hoare triple {23393#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {23384#false} is VALID [2022-04-15 06:19:36,593 INFO L290 TraceCheckUtils]: 13: Hoare triple {23384#false} assume !false; {23384#false} is VALID [2022-04-15 06:19:36,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:19:36,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:19:36,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851070359] [2022-04-15 06:19:36,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851070359] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:19:36,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186352753] [2022-04-15 06:19:36,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:19:36,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:19:36,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:19:36,595 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:19:36,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-04-15 06:19:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:19:36,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:19:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:19:36,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:19:36,900 INFO L272 TraceCheckUtils]: 0: Hoare triple {23383#true} call ULTIMATE.init(); {23383#true} is VALID [2022-04-15 06:19:36,900 INFO L290 TraceCheckUtils]: 1: Hoare triple {23383#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {23383#true} is VALID [2022-04-15 06:19:36,900 INFO L290 TraceCheckUtils]: 2: Hoare triple {23383#true} assume true; {23383#true} is VALID [2022-04-15 06:19:36,900 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {23383#true} {23383#true} #56#return; {23383#true} is VALID [2022-04-15 06:19:36,900 INFO L272 TraceCheckUtils]: 4: Hoare triple {23383#true} call #t~ret1 := main(); {23383#true} is VALID [2022-04-15 06:19:36,900 INFO L290 TraceCheckUtils]: 5: Hoare triple {23383#true} ~x~0 := 0;~y~0 := 50; {23413#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:19:36,901 INFO L290 TraceCheckUtils]: 6: Hoare triple {23413#(and (<= main_~x~0 0) (= main_~y~0 50))} [230] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1675 v_main_~x~0_1674))) (or (and (< v_main_~x~0_1675 v_main_~x~0_1674) (< v_main_~x~0_1674 51)) .cse0 (and .cse0 (not (< v_main_~x~0_1675 50))))) InVars {main_~x~0=v_main_~x~0_1675} OutVars{main_~x~0=v_main_~x~0_1674} AuxVars[] AssignedVars[main_~x~0] {23417#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:19:36,901 INFO L290 TraceCheckUtils]: 7: Hoare triple {23417#(and (= main_~y~0 50) (< main_~x~0 51))} [231] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {23417#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:19:36,902 INFO L290 TraceCheckUtils]: 8: Hoare triple {23417#(and (= main_~y~0 50) (< main_~x~0 51))} [232] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1677 v_main_~x~0_1676)) (.cse1 (= v_main_~y~0_1288 v_main_~y~0_1287)) (.cse2 (<= 50 v_main_~x~0_1677))) (or (and .cse0 .cse1) (let ((.cse3 (+ v_main_~x~0_1677 v_main_~y~0_1287))) (and .cse2 (< v_main_~y~0_1288 v_main_~y~0_1287) (< .cse3 (+ 101 v_main_~y~0_1288)) (= .cse3 (+ v_main_~x~0_1676 v_main_~y~0_1288)))) (and .cse0 .cse1 (or (not (< v_main_~x~0_1677 100)) (not .cse2))))) InVars {main_~x~0=v_main_~x~0_1677, main_~y~0=v_main_~y~0_1288} OutVars{main_~x~0=v_main_~x~0_1676, main_~y~0=v_main_~y~0_1287} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {23424#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:19:36,903 INFO L290 TraceCheckUtils]: 9: Hoare triple {23424#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [229] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {23391#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:19:36,903 INFO L272 TraceCheckUtils]: 10: Hoare triple {23391#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {23431#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:19:36,904 INFO L290 TraceCheckUtils]: 11: Hoare triple {23431#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {23435#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:19:36,904 INFO L290 TraceCheckUtils]: 12: Hoare triple {23435#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {23384#false} is VALID [2022-04-15 06:19:36,904 INFO L290 TraceCheckUtils]: 13: Hoare triple {23384#false} assume !false; {23384#false} is VALID [2022-04-15 06:19:36,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:19:36,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:19:37,335 INFO L290 TraceCheckUtils]: 13: Hoare triple {23384#false} assume !false; {23384#false} is VALID [2022-04-15 06:19:37,336 INFO L290 TraceCheckUtils]: 12: Hoare triple {23435#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {23384#false} is VALID [2022-04-15 06:19:37,336 INFO L290 TraceCheckUtils]: 11: Hoare triple {23431#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {23435#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:19:37,337 INFO L272 TraceCheckUtils]: 10: Hoare triple {23391#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {23431#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:19:37,337 INFO L290 TraceCheckUtils]: 9: Hoare triple {23454#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [229] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {23391#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:19:37,338 INFO L290 TraceCheckUtils]: 8: Hoare triple {23458#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [232] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1677 v_main_~x~0_1676)) (.cse1 (= v_main_~y~0_1288 v_main_~y~0_1287)) (.cse2 (<= 50 v_main_~x~0_1677))) (or (and .cse0 .cse1) (let ((.cse3 (+ v_main_~x~0_1677 v_main_~y~0_1287))) (and .cse2 (< v_main_~y~0_1288 v_main_~y~0_1287) (< .cse3 (+ 101 v_main_~y~0_1288)) (= .cse3 (+ v_main_~x~0_1676 v_main_~y~0_1288)))) (and .cse0 .cse1 (or (not (< v_main_~x~0_1677 100)) (not .cse2))))) InVars {main_~x~0=v_main_~x~0_1677, main_~y~0=v_main_~y~0_1288} OutVars{main_~x~0=v_main_~x~0_1676, main_~y~0=v_main_~y~0_1287} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {23454#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:19:37,339 INFO L290 TraceCheckUtils]: 7: Hoare triple {23458#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [231] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {23458#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:19:37,340 INFO L290 TraceCheckUtils]: 6: Hoare triple {23465#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= 50 main_~y~0) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [230] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1675 v_main_~x~0_1674))) (or (and (< v_main_~x~0_1675 v_main_~x~0_1674) (< v_main_~x~0_1674 51)) .cse0 (and .cse0 (not (< v_main_~x~0_1675 50))))) InVars {main_~x~0=v_main_~x~0_1675} OutVars{main_~x~0=v_main_~x~0_1674} AuxVars[] AssignedVars[main_~x~0] {23458#(and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:19:37,340 INFO L290 TraceCheckUtils]: 5: Hoare triple {23383#true} ~x~0 := 0;~y~0 := 50; {23465#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= 50 main_~y~0) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:19:37,340 INFO L272 TraceCheckUtils]: 4: Hoare triple {23383#true} call #t~ret1 := main(); {23383#true} is VALID [2022-04-15 06:19:37,340 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {23383#true} {23383#true} #56#return; {23383#true} is VALID [2022-04-15 06:19:37,340 INFO L290 TraceCheckUtils]: 2: Hoare triple {23383#true} assume true; {23383#true} is VALID [2022-04-15 06:19:37,340 INFO L290 TraceCheckUtils]: 1: Hoare triple {23383#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {23383#true} is VALID [2022-04-15 06:19:37,340 INFO L272 TraceCheckUtils]: 0: Hoare triple {23383#true} call ULTIMATE.init(); {23383#true} is VALID [2022-04-15 06:19:37,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:19:37,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186352753] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:19:37,341 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:19:37,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:19:39,449 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:19:39,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1112811739] [2022-04-15 06:19:39,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1112811739] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:19:39,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:19:39,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-04-15 06:19:39,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592001775] [2022-04-15 06:19:39,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:19:39,449 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 1.9) internal successors, (95), 49 states have internal predecessors, (95), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2022-04-15 06:19:39,450 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:19:39,450 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 51 states, 50 states have (on average 1.9) internal successors, (95), 49 states have internal predecessors, (95), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:39,524 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 99 edges. 99 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:19:39,524 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-04-15 06:19:39,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:19:39,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-04-15 06:19:39,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=3392, Unknown=0, NotChecked=0, Total=3782 [2022-04-15 06:19:39,528 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand has 51 states, 50 states have (on average 1.9) internal successors, (95), 49 states have internal predecessors, (95), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:49,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:19:49,004 INFO L93 Difference]: Finished difference Result 110 states and 115 transitions. [2022-04-15 06:19:49,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-04-15 06:19:49,004 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 1.9) internal successors, (95), 49 states have internal predecessors, (95), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2022-04-15 06:19:49,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:19:49,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.9) internal successors, (95), 49 states have internal predecessors, (95), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:49,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 115 transitions. [2022-04-15 06:19:49,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.9) internal successors, (95), 49 states have internal predecessors, (95), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:49,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 115 transitions. [2022-04-15 06:19:49,006 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 48 states and 115 transitions. [2022-04-15 06:19:49,154 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 115 edges. 115 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:19:49,155 INFO L225 Difference]: With dead ends: 110 [2022-04-15 06:19:49,155 INFO L226 Difference]: Without dead ends: 103 [2022-04-15 06:19:49,156 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 63 SyntacticMatches, 4 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2154 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=801, Invalid=10541, Unknown=0, NotChecked=0, Total=11342 [2022-04-15 06:19:49,157 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 53 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 4656 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 4706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 4656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-04-15 06:19:49,157 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 253 Invalid, 4706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 4656 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-04-15 06:19:49,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-04-15 06:19:49,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-04-15 06:19:49,349 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:19:49,350 INFO L82 GeneralOperation]: Start isEquivalent. First operand 103 states. Second operand has 103 states, 98 states have (on average 1.030612244897959) internal successors, (101), 98 states have internal predecessors, (101), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:49,350 INFO L74 IsIncluded]: Start isIncluded. First operand 103 states. Second operand has 103 states, 98 states have (on average 1.030612244897959) internal successors, (101), 98 states have internal predecessors, (101), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:49,350 INFO L87 Difference]: Start difference. First operand 103 states. Second operand has 103 states, 98 states have (on average 1.030612244897959) internal successors, (101), 98 states have internal predecessors, (101), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:49,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:19:49,351 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2022-04-15 06:19:49,351 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2022-04-15 06:19:49,351 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:19:49,351 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:19:49,351 INFO L74 IsIncluded]: Start isIncluded. First operand has 103 states, 98 states have (on average 1.030612244897959) internal successors, (101), 98 states have internal predecessors, (101), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 103 states. [2022-04-15 06:19:49,352 INFO L87 Difference]: Start difference. First operand has 103 states, 98 states have (on average 1.030612244897959) internal successors, (101), 98 states have internal predecessors, (101), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 103 states. [2022-04-15 06:19:49,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:19:49,353 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2022-04-15 06:19:49,353 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2022-04-15 06:19:49,353 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:19:49,353 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:19:49,353 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:19:49,353 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:19:49,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 98 states have (on average 1.030612244897959) internal successors, (101), 98 states have internal predecessors, (101), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:49,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2022-04-15 06:19:49,354 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 99 [2022-04-15 06:19:49,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:19:49,354 INFO L478 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2022-04-15 06:19:49,355 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 1.9) internal successors, (95), 49 states have internal predecessors, (95), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:49,355 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 103 states and 105 transitions. [2022-04-15 06:19:49,454 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 105 edges. 105 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:19:49,455 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2022-04-15 06:19:49,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-04-15 06:19:49,455 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:19:49,455 INFO L499 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:19:49,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-04-15 06:19:49,656 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-04-15 06:19:49,656 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:19:49,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:19:49,656 INFO L85 PathProgramCache]: Analyzing trace with hash -846780969, now seen corresponding path program 44 times [2022-04-15 06:19:49,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:19:49,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1895927362] [2022-04-15 06:19:49,793 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:19:50,123 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:19:50,124 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:19:50,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1191394764, now seen corresponding path program 1 times [2022-04-15 06:19:50,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:19:50,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915266963] [2022-04-15 06:19:50,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:19:50,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:19:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:19:50,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:19:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:19:50,291 INFO L290 TraceCheckUtils]: 0: Hoare triple {24264#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {24253#true} is VALID [2022-04-15 06:19:50,291 INFO L290 TraceCheckUtils]: 1: Hoare triple {24253#true} assume true; {24253#true} is VALID [2022-04-15 06:19:50,292 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {24253#true} {24253#true} #56#return; {24253#true} is VALID [2022-04-15 06:19:50,292 INFO L272 TraceCheckUtils]: 0: Hoare triple {24253#true} call ULTIMATE.init(); {24264#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:19:50,292 INFO L290 TraceCheckUtils]: 1: Hoare triple {24264#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {24253#true} is VALID [2022-04-15 06:19:50,292 INFO L290 TraceCheckUtils]: 2: Hoare triple {24253#true} assume true; {24253#true} is VALID [2022-04-15 06:19:50,292 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {24253#true} {24253#true} #56#return; {24253#true} is VALID [2022-04-15 06:19:50,292 INFO L272 TraceCheckUtils]: 4: Hoare triple {24253#true} call #t~ret1 := main(); {24253#true} is VALID [2022-04-15 06:19:50,293 INFO L290 TraceCheckUtils]: 5: Hoare triple {24253#true} ~x~0 := 0;~y~0 := 50; {24258#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:19:50,293 INFO L290 TraceCheckUtils]: 6: Hoare triple {24258#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [234] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1736 v_main_~x~0_1735))) (or .cse0 (and .cse0 (<= 50 v_main_~x~0_1736)) (and (< v_main_~x~0_1736 v_main_~x~0_1735) (< v_main_~x~0_1735 51)))) InVars {main_~x~0=v_main_~x~0_1736} OutVars{main_~x~0=v_main_~x~0_1735} AuxVars[] AssignedVars[main_~x~0] {24259#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:19:50,294 INFO L290 TraceCheckUtils]: 7: Hoare triple {24259#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [235] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {24259#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:19:50,295 INFO L290 TraceCheckUtils]: 8: Hoare triple {24259#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [236] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1738 v_main_~x~0_1737)) (.cse1 (= v_main_~y~0_1340 v_main_~y~0_1339)) (.cse2 (<= 50 v_main_~x~0_1738))) (or (and .cse0 .cse1) (and .cse2 (< v_main_~x~0_1738 v_main_~x~0_1737) (= (+ v_main_~x~0_1737 v_main_~y~0_1340) (+ v_main_~x~0_1738 v_main_~y~0_1339)) (< v_main_~x~0_1737 101)) (and .cse0 .cse1 (or (not (< v_main_~x~0_1738 100)) (not .cse2))))) InVars {main_~x~0=v_main_~x~0_1738, main_~y~0=v_main_~y~0_1340} OutVars{main_~x~0=v_main_~x~0_1737, main_~y~0=v_main_~y~0_1339} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {24260#(or (and (not (<= main_~y~0 99)) (<= main_~y~0 100)) (<= main_~x~0 99))} is VALID [2022-04-15 06:19:50,296 INFO L290 TraceCheckUtils]: 9: Hoare triple {24260#(or (and (not (<= main_~y~0 99)) (<= main_~y~0 100)) (<= main_~x~0 99))} [233] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {24261#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:19:50,296 INFO L272 TraceCheckUtils]: 10: Hoare triple {24261#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {24262#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:19:50,297 INFO L290 TraceCheckUtils]: 11: Hoare triple {24262#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {24263#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:19:50,297 INFO L290 TraceCheckUtils]: 12: Hoare triple {24263#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {24254#false} is VALID [2022-04-15 06:19:50,297 INFO L290 TraceCheckUtils]: 13: Hoare triple {24254#false} assume !false; {24254#false} is VALID [2022-04-15 06:19:50,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:19:50,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:19:50,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915266963] [2022-04-15 06:19:50,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915266963] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:19:50,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386176313] [2022-04-15 06:19:50,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:19:50,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:19:50,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:19:50,310 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:19:50,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-04-15 06:19:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:19:50,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:19:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:19:50,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:19:50,678 INFO L272 TraceCheckUtils]: 0: Hoare triple {24253#true} call ULTIMATE.init(); {24253#true} is VALID [2022-04-15 06:19:50,679 INFO L290 TraceCheckUtils]: 1: Hoare triple {24253#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {24253#true} is VALID [2022-04-15 06:19:50,679 INFO L290 TraceCheckUtils]: 2: Hoare triple {24253#true} assume true; {24253#true} is VALID [2022-04-15 06:19:50,679 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {24253#true} {24253#true} #56#return; {24253#true} is VALID [2022-04-15 06:19:50,679 INFO L272 TraceCheckUtils]: 4: Hoare triple {24253#true} call #t~ret1 := main(); {24253#true} is VALID [2022-04-15 06:19:50,679 INFO L290 TraceCheckUtils]: 5: Hoare triple {24253#true} ~x~0 := 0;~y~0 := 50; {24283#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:19:50,680 INFO L290 TraceCheckUtils]: 6: Hoare triple {24283#(and (<= main_~x~0 0) (= main_~y~0 50))} [234] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1736 v_main_~x~0_1735))) (or .cse0 (and .cse0 (<= 50 v_main_~x~0_1736)) (and (< v_main_~x~0_1736 v_main_~x~0_1735) (< v_main_~x~0_1735 51)))) InVars {main_~x~0=v_main_~x~0_1736} OutVars{main_~x~0=v_main_~x~0_1735} AuxVars[] AssignedVars[main_~x~0] {24287#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:19:50,680 INFO L290 TraceCheckUtils]: 7: Hoare triple {24287#(and (= main_~y~0 50) (< main_~x~0 51))} [235] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {24287#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:19:50,681 INFO L290 TraceCheckUtils]: 8: Hoare triple {24287#(and (= main_~y~0 50) (< main_~x~0 51))} [236] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1738 v_main_~x~0_1737)) (.cse1 (= v_main_~y~0_1340 v_main_~y~0_1339)) (.cse2 (<= 50 v_main_~x~0_1738))) (or (and .cse0 .cse1) (and .cse2 (< v_main_~x~0_1738 v_main_~x~0_1737) (= (+ v_main_~x~0_1737 v_main_~y~0_1340) (+ v_main_~x~0_1738 v_main_~y~0_1339)) (< v_main_~x~0_1737 101)) (and .cse0 .cse1 (or (not (< v_main_~x~0_1738 100)) (not .cse2))))) InVars {main_~x~0=v_main_~x~0_1738, main_~y~0=v_main_~y~0_1340} OutVars{main_~x~0=v_main_~x~0_1737, main_~y~0=v_main_~y~0_1339} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {24294#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:19:50,681 INFO L290 TraceCheckUtils]: 9: Hoare triple {24294#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [233] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {24261#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:19:50,682 INFO L272 TraceCheckUtils]: 10: Hoare triple {24261#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {24301#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:19:50,682 INFO L290 TraceCheckUtils]: 11: Hoare triple {24301#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {24305#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:19:50,683 INFO L290 TraceCheckUtils]: 12: Hoare triple {24305#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {24254#false} is VALID [2022-04-15 06:19:50,683 INFO L290 TraceCheckUtils]: 13: Hoare triple {24254#false} assume !false; {24254#false} is VALID [2022-04-15 06:19:50,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:19:50,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:19:51,163 INFO L290 TraceCheckUtils]: 13: Hoare triple {24254#false} assume !false; {24254#false} is VALID [2022-04-15 06:19:51,163 INFO L290 TraceCheckUtils]: 12: Hoare triple {24305#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {24254#false} is VALID [2022-04-15 06:19:51,164 INFO L290 TraceCheckUtils]: 11: Hoare triple {24301#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {24305#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:19:51,165 INFO L272 TraceCheckUtils]: 10: Hoare triple {24261#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {24301#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:19:51,165 INFO L290 TraceCheckUtils]: 9: Hoare triple {24260#(or (and (not (<= main_~y~0 99)) (<= main_~y~0 100)) (<= main_~x~0 99))} [233] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {24261#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:19:51,166 INFO L290 TraceCheckUtils]: 8: Hoare triple {24327#(and (or (not (<= main_~y~0 99)) (<= main_~x~0 99)) (or (<= main_~x~0 main_~y~0) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (<= main_~x~0 99) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [236] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1738 v_main_~x~0_1737)) (.cse1 (= v_main_~y~0_1340 v_main_~y~0_1339)) (.cse2 (<= 50 v_main_~x~0_1738))) (or (and .cse0 .cse1) (and .cse2 (< v_main_~x~0_1738 v_main_~x~0_1737) (= (+ v_main_~x~0_1737 v_main_~y~0_1340) (+ v_main_~x~0_1738 v_main_~y~0_1339)) (< v_main_~x~0_1737 101)) (and .cse0 .cse1 (or (not (< v_main_~x~0_1738 100)) (not .cse2))))) InVars {main_~x~0=v_main_~x~0_1738, main_~y~0=v_main_~y~0_1340} OutVars{main_~x~0=v_main_~x~0_1737, main_~y~0=v_main_~y~0_1339} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {24260#(or (and (not (<= main_~y~0 99)) (<= main_~y~0 100)) (<= main_~x~0 99))} is VALID [2022-04-15 06:19:51,167 INFO L290 TraceCheckUtils]: 7: Hoare triple {24327#(and (or (not (<= main_~y~0 99)) (<= main_~x~0 99)) (or (<= main_~x~0 main_~y~0) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (<= main_~x~0 99) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [235] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {24327#(and (or (not (<= main_~y~0 99)) (<= main_~x~0 99)) (or (<= main_~x~0 main_~y~0) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (<= main_~x~0 99) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:19:51,168 INFO L290 TraceCheckUtils]: 6: Hoare triple {24334#(and (<= 50 main_~y~0) (or (<= main_~x~0 main_~y~0) (<= 100 main_~x~0)) (or (not (<= main_~y~0 99)) (<= main_~x~0 99)) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [234] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1736 v_main_~x~0_1735))) (or .cse0 (and .cse0 (<= 50 v_main_~x~0_1736)) (and (< v_main_~x~0_1736 v_main_~x~0_1735) (< v_main_~x~0_1735 51)))) InVars {main_~x~0=v_main_~x~0_1736} OutVars{main_~x~0=v_main_~x~0_1735} AuxVars[] AssignedVars[main_~x~0] {24327#(and (or (not (<= main_~y~0 99)) (<= main_~x~0 99)) (or (<= main_~x~0 main_~y~0) (<= 100 main_~x~0) (not (<= 50 main_~x~0))) (or (<= main_~x~0 99) (<= main_~y~0 100)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:19:51,168 INFO L290 TraceCheckUtils]: 5: Hoare triple {24253#true} ~x~0 := 0;~y~0 := 50; {24334#(and (<= 50 main_~y~0) (or (<= main_~x~0 main_~y~0) (<= 100 main_~x~0)) (or (not (<= main_~y~0 99)) (<= main_~x~0 99)) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:19:51,168 INFO L272 TraceCheckUtils]: 4: Hoare triple {24253#true} call #t~ret1 := main(); {24253#true} is VALID [2022-04-15 06:19:51,168 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {24253#true} {24253#true} #56#return; {24253#true} is VALID [2022-04-15 06:19:51,168 INFO L290 TraceCheckUtils]: 2: Hoare triple {24253#true} assume true; {24253#true} is VALID [2022-04-15 06:19:51,168 INFO L290 TraceCheckUtils]: 1: Hoare triple {24253#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {24253#true} is VALID [2022-04-15 06:19:51,169 INFO L272 TraceCheckUtils]: 0: Hoare triple {24253#true} call ULTIMATE.init(); {24253#true} is VALID [2022-04-15 06:19:51,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:19:51,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386176313] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:19:51,169 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:19:51,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2022-04-15 06:19:53,626 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:19:53,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1895927362] [2022-04-15 06:19:53,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1895927362] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:19:53,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:19:53,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-04-15 06:19:53,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816724868] [2022-04-15 06:19:53,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:19:53,627 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 1.9019607843137254) internal successors, (97), 50 states have internal predecessors, (97), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 101 [2022-04-15 06:19:53,627 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:19:53,627 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 52 states, 51 states have (on average 1.9019607843137254) internal successors, (97), 50 states have internal predecessors, (97), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:19:53,704 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 101 edges. 101 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:19:53,704 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-04-15 06:19:53,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:19:53,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-04-15 06:19:53,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=3442, Unknown=0, NotChecked=0, Total=3782 [2022-04-15 06:19:53,705 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand has 52 states, 51 states have (on average 1.9019607843137254) internal successors, (97), 50 states have internal predecessors, (97), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:02,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:20:02,813 INFO L93 Difference]: Finished difference Result 112 states and 117 transitions. [2022-04-15 06:20:02,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-04-15 06:20:02,814 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 1.9019607843137254) internal successors, (97), 50 states have internal predecessors, (97), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 101 [2022-04-15 06:20:02,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:20:02,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.9019607843137254) internal successors, (97), 50 states have internal predecessors, (97), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:02,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 117 transitions. [2022-04-15 06:20:02,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.9019607843137254) internal successors, (97), 50 states have internal predecessors, (97), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:02,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 117 transitions. [2022-04-15 06:20:02,816 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 49 states and 117 transitions. [2022-04-15 06:20:02,934 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 117 edges. 117 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:20:02,935 INFO L225 Difference]: With dead ends: 112 [2022-04-15 06:20:02,935 INFO L226 Difference]: Without dead ends: 105 [2022-04-15 06:20:02,936 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 64 SyntacticMatches, 5 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2121 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=714, Invalid=10842, Unknown=0, NotChecked=0, Total=11556 [2022-04-15 06:20:02,936 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 54 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 4851 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 4902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 4851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-04-15 06:20:02,937 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 258 Invalid, 4902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 4851 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-04-15 06:20:02,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-04-15 06:20:03,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-04-15 06:20:03,128 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:20:03,128 INFO L82 GeneralOperation]: Start isEquivalent. First operand 105 states. Second operand has 105 states, 100 states have (on average 1.03) internal successors, (103), 100 states have internal predecessors, (103), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:03,128 INFO L74 IsIncluded]: Start isIncluded. First operand 105 states. Second operand has 105 states, 100 states have (on average 1.03) internal successors, (103), 100 states have internal predecessors, (103), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:03,128 INFO L87 Difference]: Start difference. First operand 105 states. Second operand has 105 states, 100 states have (on average 1.03) internal successors, (103), 100 states have internal predecessors, (103), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:03,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:20:03,130 INFO L93 Difference]: Finished difference Result 105 states and 107 transitions. [2022-04-15 06:20:03,130 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2022-04-15 06:20:03,130 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:20:03,130 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:20:03,130 INFO L74 IsIncluded]: Start isIncluded. First operand has 105 states, 100 states have (on average 1.03) internal successors, (103), 100 states have internal predecessors, (103), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 105 states. [2022-04-15 06:20:03,130 INFO L87 Difference]: Start difference. First operand has 105 states, 100 states have (on average 1.03) internal successors, (103), 100 states have internal predecessors, (103), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 105 states. [2022-04-15 06:20:03,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:20:03,131 INFO L93 Difference]: Finished difference Result 105 states and 107 transitions. [2022-04-15 06:20:03,131 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2022-04-15 06:20:03,131 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:20:03,132 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:20:03,132 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:20:03,132 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:20:03,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.03) internal successors, (103), 100 states have internal predecessors, (103), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:03,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2022-04-15 06:20:03,133 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 101 [2022-04-15 06:20:03,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:20:03,133 INFO L478 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2022-04-15 06:20:03,133 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 1.9019607843137254) internal successors, (97), 50 states have internal predecessors, (97), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:03,134 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 105 states and 107 transitions. [2022-04-15 06:20:03,756 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 107 edges. 107 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:20:03,756 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2022-04-15 06:20:03,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-04-15 06:20:03,757 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:20:03,757 INFO L499 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:20:03,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-04-15 06:20:03,959 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-04-15 06:20:03,959 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:20:03,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:20:03,960 INFO L85 PathProgramCache]: Analyzing trace with hash -938019982, now seen corresponding path program 45 times [2022-04-15 06:20:03,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:20:03,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1360697057] [2022-04-15 06:20:04,444 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:20:04,885 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:20:04,886 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:20:04,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1054040372, now seen corresponding path program 1 times [2022-04-15 06:20:04,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:20:04,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270622226] [2022-04-15 06:20:04,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:20:04,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:20:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:20:04,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:20:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:20:04,997 INFO L290 TraceCheckUtils]: 0: Hoare triple {25148#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {25137#true} is VALID [2022-04-15 06:20:04,997 INFO L290 TraceCheckUtils]: 1: Hoare triple {25137#true} assume true; {25137#true} is VALID [2022-04-15 06:20:04,997 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {25137#true} {25137#true} #56#return; {25137#true} is VALID [2022-04-15 06:20:04,998 INFO L272 TraceCheckUtils]: 0: Hoare triple {25137#true} call ULTIMATE.init(); {25148#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:20:04,998 INFO L290 TraceCheckUtils]: 1: Hoare triple {25148#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {25137#true} is VALID [2022-04-15 06:20:04,998 INFO L290 TraceCheckUtils]: 2: Hoare triple {25137#true} assume true; {25137#true} is VALID [2022-04-15 06:20:04,998 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {25137#true} {25137#true} #56#return; {25137#true} is VALID [2022-04-15 06:20:04,998 INFO L272 TraceCheckUtils]: 4: Hoare triple {25137#true} call #t~ret1 := main(); {25137#true} is VALID [2022-04-15 06:20:04,999 INFO L290 TraceCheckUtils]: 5: Hoare triple {25137#true} ~x~0 := 0;~y~0 := 50; {25142#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:20:04,999 INFO L290 TraceCheckUtils]: 6: Hoare triple {25142#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [238] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1798 v_main_~x~0_1797))) (or .cse0 (and .cse0 (not (< v_main_~x~0_1798 50))) (and (< v_main_~x~0_1797 51) (< v_main_~x~0_1798 v_main_~x~0_1797)))) InVars {main_~x~0=v_main_~x~0_1798} OutVars{main_~x~0=v_main_~x~0_1797} AuxVars[] AssignedVars[main_~x~0] {25143#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:20:05,000 INFO L290 TraceCheckUtils]: 7: Hoare triple {25143#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [239] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25143#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:20:05,001 INFO L290 TraceCheckUtils]: 8: Hoare triple {25143#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [240] L28-2-->L27-2_primed: Formula: (let ((.cse0 (<= 50 v_main_~x~0_1800)) (.cse1 (= v_main_~x~0_1800 v_main_~x~0_1799)) (.cse2 (= v_main_~y~0_1393 v_main_~y~0_1392))) (or (and (< v_main_~x~0_1799 101) (< v_main_~x~0_1800 v_main_~x~0_1799) (= (+ v_main_~x~0_1800 v_main_~y~0_1392) (+ v_main_~x~0_1799 v_main_~y~0_1393)) .cse0) (and .cse1 (or (not (< v_main_~x~0_1800 100)) (not .cse0)) .cse2) (and .cse1 .cse2))) InVars {main_~x~0=v_main_~x~0_1800, main_~y~0=v_main_~y~0_1393} OutVars{main_~x~0=v_main_~x~0_1799, main_~y~0=v_main_~y~0_1392} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {25144#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:20:05,001 INFO L290 TraceCheckUtils]: 9: Hoare triple {25144#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [237] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {25145#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:20:05,002 INFO L272 TraceCheckUtils]: 10: Hoare triple {25145#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {25146#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:20:05,002 INFO L290 TraceCheckUtils]: 11: Hoare triple {25146#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {25147#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:20:05,003 INFO L290 TraceCheckUtils]: 12: Hoare triple {25147#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {25138#false} is VALID [2022-04-15 06:20:05,003 INFO L290 TraceCheckUtils]: 13: Hoare triple {25138#false} assume !false; {25138#false} is VALID [2022-04-15 06:20:05,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:20:05,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:20:05,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270622226] [2022-04-15 06:20:05,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270622226] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:20:05,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618372423] [2022-04-15 06:20:05,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:20:05,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:20:05,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:20:05,005 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:20:05,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-04-15 06:20:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:20:05,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:20:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:20:05,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:20:05,358 INFO L272 TraceCheckUtils]: 0: Hoare triple {25137#true} call ULTIMATE.init(); {25137#true} is VALID [2022-04-15 06:20:05,359 INFO L290 TraceCheckUtils]: 1: Hoare triple {25137#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {25137#true} is VALID [2022-04-15 06:20:05,359 INFO L290 TraceCheckUtils]: 2: Hoare triple {25137#true} assume true; {25137#true} is VALID [2022-04-15 06:20:05,359 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {25137#true} {25137#true} #56#return; {25137#true} is VALID [2022-04-15 06:20:05,359 INFO L272 TraceCheckUtils]: 4: Hoare triple {25137#true} call #t~ret1 := main(); {25137#true} is VALID [2022-04-15 06:20:05,359 INFO L290 TraceCheckUtils]: 5: Hoare triple {25137#true} ~x~0 := 0;~y~0 := 50; {25167#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:20:05,360 INFO L290 TraceCheckUtils]: 6: Hoare triple {25167#(and (<= main_~x~0 0) (= main_~y~0 50))} [238] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1798 v_main_~x~0_1797))) (or .cse0 (and .cse0 (not (< v_main_~x~0_1798 50))) (and (< v_main_~x~0_1797 51) (< v_main_~x~0_1798 v_main_~x~0_1797)))) InVars {main_~x~0=v_main_~x~0_1798} OutVars{main_~x~0=v_main_~x~0_1797} AuxVars[] AssignedVars[main_~x~0] {25171#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:20:05,360 INFO L290 TraceCheckUtils]: 7: Hoare triple {25171#(and (= main_~y~0 50) (< main_~x~0 51))} [239] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25171#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:20:05,361 INFO L290 TraceCheckUtils]: 8: Hoare triple {25171#(and (= main_~y~0 50) (< main_~x~0 51))} [240] L28-2-->L27-2_primed: Formula: (let ((.cse0 (<= 50 v_main_~x~0_1800)) (.cse1 (= v_main_~x~0_1800 v_main_~x~0_1799)) (.cse2 (= v_main_~y~0_1393 v_main_~y~0_1392))) (or (and (< v_main_~x~0_1799 101) (< v_main_~x~0_1800 v_main_~x~0_1799) (= (+ v_main_~x~0_1800 v_main_~y~0_1392) (+ v_main_~x~0_1799 v_main_~y~0_1393)) .cse0) (and .cse1 (or (not (< v_main_~x~0_1800 100)) (not .cse0)) .cse2) (and .cse1 .cse2))) InVars {main_~x~0=v_main_~x~0_1800, main_~y~0=v_main_~y~0_1393} OutVars{main_~x~0=v_main_~x~0_1799, main_~y~0=v_main_~y~0_1392} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {25178#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:20:05,362 INFO L290 TraceCheckUtils]: 9: Hoare triple {25178#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [237] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {25145#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:20:05,363 INFO L272 TraceCheckUtils]: 10: Hoare triple {25145#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {25185#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:20:05,363 INFO L290 TraceCheckUtils]: 11: Hoare triple {25185#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {25189#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:20:05,364 INFO L290 TraceCheckUtils]: 12: Hoare triple {25189#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {25138#false} is VALID [2022-04-15 06:20:05,364 INFO L290 TraceCheckUtils]: 13: Hoare triple {25138#false} assume !false; {25138#false} is VALID [2022-04-15 06:20:05,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:20:05,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:20:05,916 INFO L290 TraceCheckUtils]: 13: Hoare triple {25138#false} assume !false; {25138#false} is VALID [2022-04-15 06:20:05,917 INFO L290 TraceCheckUtils]: 12: Hoare triple {25189#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {25138#false} is VALID [2022-04-15 06:20:05,917 INFO L290 TraceCheckUtils]: 11: Hoare triple {25185#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {25189#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:20:05,918 INFO L272 TraceCheckUtils]: 10: Hoare triple {25145#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {25185#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:20:05,919 INFO L290 TraceCheckUtils]: 9: Hoare triple {25208#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [237] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {25145#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:20:05,920 INFO L290 TraceCheckUtils]: 8: Hoare triple {25212#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [240] L28-2-->L27-2_primed: Formula: (let ((.cse0 (<= 50 v_main_~x~0_1800)) (.cse1 (= v_main_~x~0_1800 v_main_~x~0_1799)) (.cse2 (= v_main_~y~0_1393 v_main_~y~0_1392))) (or (and (< v_main_~x~0_1799 101) (< v_main_~x~0_1800 v_main_~x~0_1799) (= (+ v_main_~x~0_1800 v_main_~y~0_1392) (+ v_main_~x~0_1799 v_main_~y~0_1393)) .cse0) (and .cse1 (or (not (< v_main_~x~0_1800 100)) (not .cse0)) .cse2) (and .cse1 .cse2))) InVars {main_~x~0=v_main_~x~0_1800, main_~y~0=v_main_~y~0_1393} OutVars{main_~x~0=v_main_~x~0_1799, main_~y~0=v_main_~y~0_1392} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {25208#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:20:05,934 INFO L290 TraceCheckUtils]: 7: Hoare triple {25212#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [239] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25212#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:20:05,935 INFO L290 TraceCheckUtils]: 6: Hoare triple {25219#(and (<= 50 main_~y~0) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [238] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1798 v_main_~x~0_1797))) (or .cse0 (and .cse0 (not (< v_main_~x~0_1798 50))) (and (< v_main_~x~0_1797 51) (< v_main_~x~0_1798 v_main_~x~0_1797)))) InVars {main_~x~0=v_main_~x~0_1798} OutVars{main_~x~0=v_main_~x~0_1797} AuxVars[] AssignedVars[main_~x~0] {25212#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:20:05,935 INFO L290 TraceCheckUtils]: 5: Hoare triple {25137#true} ~x~0 := 0;~y~0 := 50; {25219#(and (<= 50 main_~y~0) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))) (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:20:05,936 INFO L272 TraceCheckUtils]: 4: Hoare triple {25137#true} call #t~ret1 := main(); {25137#true} is VALID [2022-04-15 06:20:05,936 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {25137#true} {25137#true} #56#return; {25137#true} is VALID [2022-04-15 06:20:05,936 INFO L290 TraceCheckUtils]: 2: Hoare triple {25137#true} assume true; {25137#true} is VALID [2022-04-15 06:20:05,936 INFO L290 TraceCheckUtils]: 1: Hoare triple {25137#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {25137#true} is VALID [2022-04-15 06:20:05,936 INFO L272 TraceCheckUtils]: 0: Hoare triple {25137#true} call ULTIMATE.init(); {25137#true} is VALID [2022-04-15 06:20:05,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:20:05,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618372423] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:20:05,936 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:20:05,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:20:08,648 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:20:08,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1360697057] [2022-04-15 06:20:08,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1360697057] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:20:08,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:20:08,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-04-15 06:20:08,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183478283] [2022-04-15 06:20:08,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:20:08,649 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.9038461538461537) internal successors, (99), 51 states have internal predecessors, (99), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2022-04-15 06:20:08,649 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:20:08,649 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 53 states, 52 states have (on average 1.9038461538461537) internal successors, (99), 51 states have internal predecessors, (99), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:08,747 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 103 edges. 103 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:20:08,748 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-04-15 06:20:08,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:20:08,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-04-15 06:20:08,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=3628, Unknown=0, NotChecked=0, Total=4032 [2022-04-15 06:20:08,749 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand has 53 states, 52 states have (on average 1.9038461538461537) internal successors, (99), 51 states have internal predecessors, (99), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:18,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:20:18,873 INFO L93 Difference]: Finished difference Result 114 states and 119 transitions. [2022-04-15 06:20:18,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-04-15 06:20:18,873 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.9038461538461537) internal successors, (99), 51 states have internal predecessors, (99), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2022-04-15 06:20:18,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:20:18,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.9038461538461537) internal successors, (99), 51 states have internal predecessors, (99), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:18,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 119 transitions. [2022-04-15 06:20:18,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.9038461538461537) internal successors, (99), 51 states have internal predecessors, (99), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:18,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 119 transitions. [2022-04-15 06:20:18,875 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 50 states and 119 transitions. [2022-04-15 06:20:19,000 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 119 edges. 119 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:20:19,001 INFO L225 Difference]: With dead ends: 114 [2022-04-15 06:20:19,001 INFO L226 Difference]: Without dead ends: 107 [2022-04-15 06:20:19,002 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 65 SyntacticMatches, 4 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2293 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=833, Invalid=11377, Unknown=0, NotChecked=0, Total=12210 [2022-04-15 06:20:19,003 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 55 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 4953 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 5005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 4953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-04-15 06:20:19,003 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 258 Invalid, 5005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 4953 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-04-15 06:20:19,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-04-15 06:20:19,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-04-15 06:20:19,198 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:20:19,199 INFO L82 GeneralOperation]: Start isEquivalent. First operand 107 states. Second operand has 107 states, 102 states have (on average 1.0294117647058822) internal successors, (105), 102 states have internal predecessors, (105), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:19,199 INFO L74 IsIncluded]: Start isIncluded. First operand 107 states. Second operand has 107 states, 102 states have (on average 1.0294117647058822) internal successors, (105), 102 states have internal predecessors, (105), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:19,199 INFO L87 Difference]: Start difference. First operand 107 states. Second operand has 107 states, 102 states have (on average 1.0294117647058822) internal successors, (105), 102 states have internal predecessors, (105), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:19,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:20:19,200 INFO L93 Difference]: Finished difference Result 107 states and 109 transitions. [2022-04-15 06:20:19,200 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2022-04-15 06:20:19,200 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:20:19,200 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:20:19,201 INFO L74 IsIncluded]: Start isIncluded. First operand has 107 states, 102 states have (on average 1.0294117647058822) internal successors, (105), 102 states have internal predecessors, (105), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 107 states. [2022-04-15 06:20:19,201 INFO L87 Difference]: Start difference. First operand has 107 states, 102 states have (on average 1.0294117647058822) internal successors, (105), 102 states have internal predecessors, (105), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 107 states. [2022-04-15 06:20:19,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:20:19,202 INFO L93 Difference]: Finished difference Result 107 states and 109 transitions. [2022-04-15 06:20:19,202 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2022-04-15 06:20:19,202 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:20:19,202 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:20:19,202 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:20:19,202 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:20:19,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 102 states have (on average 1.0294117647058822) internal successors, (105), 102 states have internal predecessors, (105), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:19,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2022-04-15 06:20:19,204 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 103 [2022-04-15 06:20:19,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:20:19,204 INFO L478 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2022-04-15 06:20:19,204 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 1.9038461538461537) internal successors, (99), 51 states have internal predecessors, (99), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:19,204 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 107 states and 109 transitions. [2022-04-15 06:20:19,554 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 109 edges. 109 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:20:19,555 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2022-04-15 06:20:19,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-04-15 06:20:19,555 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:20:19,555 INFO L499 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:20:19,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-04-15 06:20:19,756 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-04-15 06:20:19,756 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:20:19,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:20:19,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1575601741, now seen corresponding path program 46 times [2022-04-15 06:20:19,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:20:19,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1640174386] [2022-04-15 06:20:19,859 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:20:20,123 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:20:20,124 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:20:20,127 INFO L85 PathProgramCache]: Analyzing trace with hash 995491788, now seen corresponding path program 1 times [2022-04-15 06:20:20,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:20:20,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865621928] [2022-04-15 06:20:20,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:20:20,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:20:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:20:20,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:20:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:20:20,271 INFO L290 TraceCheckUtils]: 0: Hoare triple {26048#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {26037#true} is VALID [2022-04-15 06:20:20,272 INFO L290 TraceCheckUtils]: 1: Hoare triple {26037#true} assume true; {26037#true} is VALID [2022-04-15 06:20:20,272 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {26037#true} {26037#true} #56#return; {26037#true} is VALID [2022-04-15 06:20:20,272 INFO L272 TraceCheckUtils]: 0: Hoare triple {26037#true} call ULTIMATE.init(); {26048#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:20:20,272 INFO L290 TraceCheckUtils]: 1: Hoare triple {26048#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {26037#true} is VALID [2022-04-15 06:20:20,273 INFO L290 TraceCheckUtils]: 2: Hoare triple {26037#true} assume true; {26037#true} is VALID [2022-04-15 06:20:20,273 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {26037#true} {26037#true} #56#return; {26037#true} is VALID [2022-04-15 06:20:20,273 INFO L272 TraceCheckUtils]: 4: Hoare triple {26037#true} call #t~ret1 := main(); {26037#true} is VALID [2022-04-15 06:20:20,273 INFO L290 TraceCheckUtils]: 5: Hoare triple {26037#true} ~x~0 := 0;~y~0 := 50; {26042#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:20:20,274 INFO L290 TraceCheckUtils]: 6: Hoare triple {26042#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [242] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1861 v_main_~x~0_1860))) (or (and (< v_main_~x~0_1861 v_main_~x~0_1860) (< v_main_~x~0_1860 51)) (and (not (< v_main_~x~0_1861 50)) .cse0) .cse0)) InVars {main_~x~0=v_main_~x~0_1861} OutVars{main_~x~0=v_main_~x~0_1860} AuxVars[] AssignedVars[main_~x~0] {26043#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:20:20,274 INFO L290 TraceCheckUtils]: 7: Hoare triple {26043#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [243] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {26043#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:20:20,275 INFO L290 TraceCheckUtils]: 8: Hoare triple {26043#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [244] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_1447 v_main_~y~0_1446)) (.cse3 (<= 50 v_main_~x~0_1863)) (.cse1 (= v_main_~x~0_1863 v_main_~x~0_1862))) (or (and .cse0 .cse1) (let ((.cse2 (+ v_main_~x~0_1863 v_main_~y~0_1446))) (and (= .cse2 (+ v_main_~x~0_1862 v_main_~y~0_1447)) (< .cse2 (+ 101 v_main_~y~0_1447)) (< v_main_~y~0_1447 v_main_~y~0_1446) .cse3)) (and .cse0 (or (not .cse3) (not (< v_main_~x~0_1863 100))) .cse1))) InVars {main_~x~0=v_main_~x~0_1863, main_~y~0=v_main_~y~0_1447} OutVars{main_~x~0=v_main_~x~0_1862, main_~y~0=v_main_~y~0_1446} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {26044#(or (and (or (< 99 main_~y~0) (<= main_~x~0 main_~y~0)) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:20:20,276 INFO L290 TraceCheckUtils]: 9: Hoare triple {26044#(or (and (or (< 99 main_~y~0) (<= main_~x~0 main_~y~0)) (<= main_~y~0 100)) (<= main_~x~0 50))} [241] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {26045#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:20:20,277 INFO L272 TraceCheckUtils]: 10: Hoare triple {26045#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {26046#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:20:20,277 INFO L290 TraceCheckUtils]: 11: Hoare triple {26046#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {26047#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:20:20,277 INFO L290 TraceCheckUtils]: 12: Hoare triple {26047#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {26038#false} is VALID [2022-04-15 06:20:20,277 INFO L290 TraceCheckUtils]: 13: Hoare triple {26038#false} assume !false; {26038#false} is VALID [2022-04-15 06:20:20,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:20:20,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:20:20,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865621928] [2022-04-15 06:20:20,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865621928] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:20:20,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199016337] [2022-04-15 06:20:20,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:20:20,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:20:20,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:20:20,283 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:20:20,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-04-15 06:20:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:20:20,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:20:20,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:20:20,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:20:20,673 INFO L272 TraceCheckUtils]: 0: Hoare triple {26037#true} call ULTIMATE.init(); {26037#true} is VALID [2022-04-15 06:20:20,673 INFO L290 TraceCheckUtils]: 1: Hoare triple {26037#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {26037#true} is VALID [2022-04-15 06:20:20,673 INFO L290 TraceCheckUtils]: 2: Hoare triple {26037#true} assume true; {26037#true} is VALID [2022-04-15 06:20:20,673 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {26037#true} {26037#true} #56#return; {26037#true} is VALID [2022-04-15 06:20:20,673 INFO L272 TraceCheckUtils]: 4: Hoare triple {26037#true} call #t~ret1 := main(); {26037#true} is VALID [2022-04-15 06:20:20,674 INFO L290 TraceCheckUtils]: 5: Hoare triple {26037#true} ~x~0 := 0;~y~0 := 50; {26067#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:20:20,674 INFO L290 TraceCheckUtils]: 6: Hoare triple {26067#(and (<= main_~x~0 0) (= main_~y~0 50))} [242] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1861 v_main_~x~0_1860))) (or (and (< v_main_~x~0_1861 v_main_~x~0_1860) (< v_main_~x~0_1860 51)) (and (not (< v_main_~x~0_1861 50)) .cse0) .cse0)) InVars {main_~x~0=v_main_~x~0_1861} OutVars{main_~x~0=v_main_~x~0_1860} AuxVars[] AssignedVars[main_~x~0] {26071#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:20:20,675 INFO L290 TraceCheckUtils]: 7: Hoare triple {26071#(and (= main_~y~0 50) (< main_~x~0 51))} [243] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {26071#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:20:20,676 INFO L290 TraceCheckUtils]: 8: Hoare triple {26071#(and (= main_~y~0 50) (< main_~x~0 51))} [244] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_1447 v_main_~y~0_1446)) (.cse3 (<= 50 v_main_~x~0_1863)) (.cse1 (= v_main_~x~0_1863 v_main_~x~0_1862))) (or (and .cse0 .cse1) (let ((.cse2 (+ v_main_~x~0_1863 v_main_~y~0_1446))) (and (= .cse2 (+ v_main_~x~0_1862 v_main_~y~0_1447)) (< .cse2 (+ 101 v_main_~y~0_1447)) (< v_main_~y~0_1447 v_main_~y~0_1446) .cse3)) (and .cse0 (or (not .cse3) (not (< v_main_~x~0_1863 100))) .cse1))) InVars {main_~x~0=v_main_~x~0_1863, main_~y~0=v_main_~y~0_1447} OutVars{main_~x~0=v_main_~x~0_1862, main_~y~0=v_main_~y~0_1446} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {26078#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:20:20,677 INFO L290 TraceCheckUtils]: 9: Hoare triple {26078#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [241] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {26045#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:20:20,677 INFO L272 TraceCheckUtils]: 10: Hoare triple {26045#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {26085#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:20:20,678 INFO L290 TraceCheckUtils]: 11: Hoare triple {26085#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {26089#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:20:20,678 INFO L290 TraceCheckUtils]: 12: Hoare triple {26089#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {26038#false} is VALID [2022-04-15 06:20:20,678 INFO L290 TraceCheckUtils]: 13: Hoare triple {26038#false} assume !false; {26038#false} is VALID [2022-04-15 06:20:20,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:20:20,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:20:21,207 INFO L290 TraceCheckUtils]: 13: Hoare triple {26038#false} assume !false; {26038#false} is VALID [2022-04-15 06:20:21,208 INFO L290 TraceCheckUtils]: 12: Hoare triple {26089#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {26038#false} is VALID [2022-04-15 06:20:21,208 INFO L290 TraceCheckUtils]: 11: Hoare triple {26085#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {26089#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:20:21,209 INFO L272 TraceCheckUtils]: 10: Hoare triple {26045#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {26085#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:20:21,209 INFO L290 TraceCheckUtils]: 9: Hoare triple {26108#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [241] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {26045#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:20:21,229 INFO L290 TraceCheckUtils]: 8: Hoare triple {26112#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [244] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_1447 v_main_~y~0_1446)) (.cse3 (<= 50 v_main_~x~0_1863)) (.cse1 (= v_main_~x~0_1863 v_main_~x~0_1862))) (or (and .cse0 .cse1) (let ((.cse2 (+ v_main_~x~0_1863 v_main_~y~0_1446))) (and (= .cse2 (+ v_main_~x~0_1862 v_main_~y~0_1447)) (< .cse2 (+ 101 v_main_~y~0_1447)) (< v_main_~y~0_1447 v_main_~y~0_1446) .cse3)) (and .cse0 (or (not .cse3) (not (< v_main_~x~0_1863 100))) .cse1))) InVars {main_~x~0=v_main_~x~0_1863, main_~y~0=v_main_~y~0_1447} OutVars{main_~x~0=v_main_~x~0_1862, main_~y~0=v_main_~y~0_1446} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {26108#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:20:21,230 INFO L290 TraceCheckUtils]: 7: Hoare triple {26112#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [243] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {26112#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:20:21,231 INFO L290 TraceCheckUtils]: 6: Hoare triple {26119#(and (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)) (or (and (< main_~x~0 (+ main_~y~0 1)) (<= 50 main_~y~0)) (<= 99 main_~y~0)))} [242] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1861 v_main_~x~0_1860))) (or (and (< v_main_~x~0_1861 v_main_~x~0_1860) (< v_main_~x~0_1860 51)) (and (not (< v_main_~x~0_1861 50)) .cse0) .cse0)) InVars {main_~x~0=v_main_~x~0_1861} OutVars{main_~x~0=v_main_~x~0_1860} AuxVars[] AssignedVars[main_~x~0] {26112#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:20:21,232 INFO L290 TraceCheckUtils]: 5: Hoare triple {26037#true} ~x~0 := 0;~y~0 := 50; {26119#(and (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)) (or (and (< main_~x~0 (+ main_~y~0 1)) (<= 50 main_~y~0)) (<= 99 main_~y~0)))} is VALID [2022-04-15 06:20:21,232 INFO L272 TraceCheckUtils]: 4: Hoare triple {26037#true} call #t~ret1 := main(); {26037#true} is VALID [2022-04-15 06:20:21,232 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {26037#true} {26037#true} #56#return; {26037#true} is VALID [2022-04-15 06:20:21,232 INFO L290 TraceCheckUtils]: 2: Hoare triple {26037#true} assume true; {26037#true} is VALID [2022-04-15 06:20:21,232 INFO L290 TraceCheckUtils]: 1: Hoare triple {26037#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {26037#true} is VALID [2022-04-15 06:20:21,232 INFO L272 TraceCheckUtils]: 0: Hoare triple {26037#true} call ULTIMATE.init(); {26037#true} is VALID [2022-04-15 06:20:21,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:20:21,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199016337] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:20:21,232 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:20:21,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:20:23,820 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:20:23,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1640174386] [2022-04-15 06:20:23,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1640174386] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:20:23,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:20:23,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-04-15 06:20:23,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035665216] [2022-04-15 06:20:23,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:20:23,821 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.9056603773584906) internal successors, (101), 52 states have internal predecessors, (101), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2022-04-15 06:20:23,821 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:20:23,822 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 54 states, 53 states have (on average 1.9056603773584906) internal successors, (101), 52 states have internal predecessors, (101), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:23,905 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 105 edges. 105 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:20:23,906 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-04-15 06:20:23,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:20:23,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-04-15 06:20:23,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=411, Invalid=3749, Unknown=0, NotChecked=0, Total=4160 [2022-04-15 06:20:23,906 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand has 54 states, 53 states have (on average 1.9056603773584906) internal successors, (101), 52 states have internal predecessors, (101), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:34,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:20:34,164 INFO L93 Difference]: Finished difference Result 116 states and 121 transitions. [2022-04-15 06:20:34,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-04-15 06:20:34,165 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.9056603773584906) internal successors, (101), 52 states have internal predecessors, (101), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2022-04-15 06:20:34,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:20:34,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.9056603773584906) internal successors, (101), 52 states have internal predecessors, (101), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:34,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 121 transitions. [2022-04-15 06:20:34,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.9056603773584906) internal successors, (101), 52 states have internal predecessors, (101), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:34,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 121 transitions. [2022-04-15 06:20:34,167 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 51 states and 121 transitions. [2022-04-15 06:20:34,289 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 121 edges. 121 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:20:34,290 INFO L225 Difference]: With dead ends: 116 [2022-04-15 06:20:34,290 INFO L226 Difference]: Without dead ends: 109 [2022-04-15 06:20:34,291 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 66 SyntacticMatches, 4 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2364 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=849, Invalid=11807, Unknown=0, NotChecked=0, Total=12656 [2022-04-15 06:20:34,291 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 56 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 5207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-04-15 06:20:34,292 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 263 Invalid, 5207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-04-15 06:20:34,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-04-15 06:20:34,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2022-04-15 06:20:34,506 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:20:34,507 INFO L82 GeneralOperation]: Start isEquivalent. First operand 109 states. Second operand has 109 states, 104 states have (on average 1.0288461538461537) internal successors, (107), 104 states have internal predecessors, (107), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:34,507 INFO L74 IsIncluded]: Start isIncluded. First operand 109 states. Second operand has 109 states, 104 states have (on average 1.0288461538461537) internal successors, (107), 104 states have internal predecessors, (107), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:34,507 INFO L87 Difference]: Start difference. First operand 109 states. Second operand has 109 states, 104 states have (on average 1.0288461538461537) internal successors, (107), 104 states have internal predecessors, (107), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:34,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:20:34,508 INFO L93 Difference]: Finished difference Result 109 states and 111 transitions. [2022-04-15 06:20:34,508 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2022-04-15 06:20:34,509 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:20:34,509 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:20:34,509 INFO L74 IsIncluded]: Start isIncluded. First operand has 109 states, 104 states have (on average 1.0288461538461537) internal successors, (107), 104 states have internal predecessors, (107), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 109 states. [2022-04-15 06:20:34,509 INFO L87 Difference]: Start difference. First operand has 109 states, 104 states have (on average 1.0288461538461537) internal successors, (107), 104 states have internal predecessors, (107), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 109 states. [2022-04-15 06:20:34,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:20:34,510 INFO L93 Difference]: Finished difference Result 109 states and 111 transitions. [2022-04-15 06:20:34,510 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2022-04-15 06:20:34,510 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:20:34,510 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:20:34,510 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:20:34,510 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:20:34,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 104 states have (on average 1.0288461538461537) internal successors, (107), 104 states have internal predecessors, (107), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:34,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2022-04-15 06:20:34,512 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 105 [2022-04-15 06:20:34,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:20:34,512 INFO L478 AbstractCegarLoop]: Abstraction has 109 states and 111 transitions. [2022-04-15 06:20:34,512 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 1.9056603773584906) internal successors, (101), 52 states have internal predecessors, (101), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:34,512 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 109 states and 111 transitions. [2022-04-15 06:20:34,615 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 111 edges. 111 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:20:34,615 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2022-04-15 06:20:34,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-04-15 06:20:34,615 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:20:34,615 INFO L499 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:20:34,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-04-15 06:20:34,816 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:20:34,816 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:20:34,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:20:34,817 INFO L85 PathProgramCache]: Analyzing trace with hash -900510104, now seen corresponding path program 47 times [2022-04-15 06:20:34,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:20:34,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [440112034] [2022-04-15 06:20:37,005 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-15 06:20:37,077 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:20:37,325 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:20:37,326 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:20:37,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1249943348, now seen corresponding path program 1 times [2022-04-15 06:20:37,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:20:37,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232506154] [2022-04-15 06:20:37,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:20:37,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:20:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:20:37,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:20:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:20:37,433 INFO L290 TraceCheckUtils]: 0: Hoare triple {26963#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {26952#true} is VALID [2022-04-15 06:20:37,433 INFO L290 TraceCheckUtils]: 1: Hoare triple {26952#true} assume true; {26952#true} is VALID [2022-04-15 06:20:37,433 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {26952#true} {26952#true} #56#return; {26952#true} is VALID [2022-04-15 06:20:37,434 INFO L272 TraceCheckUtils]: 0: Hoare triple {26952#true} call ULTIMATE.init(); {26963#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:20:37,434 INFO L290 TraceCheckUtils]: 1: Hoare triple {26963#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {26952#true} is VALID [2022-04-15 06:20:37,434 INFO L290 TraceCheckUtils]: 2: Hoare triple {26952#true} assume true; {26952#true} is VALID [2022-04-15 06:20:37,434 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {26952#true} {26952#true} #56#return; {26952#true} is VALID [2022-04-15 06:20:37,434 INFO L272 TraceCheckUtils]: 4: Hoare triple {26952#true} call #t~ret1 := main(); {26952#true} is VALID [2022-04-15 06:20:37,435 INFO L290 TraceCheckUtils]: 5: Hoare triple {26952#true} ~x~0 := 0;~y~0 := 50; {26957#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:20:37,436 INFO L290 TraceCheckUtils]: 6: Hoare triple {26957#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [246] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1925 v_main_~x~0_1924))) (or (and (not (< v_main_~x~0_1925 50)) .cse0) (and (< v_main_~x~0_1925 v_main_~x~0_1924) (< v_main_~x~0_1924 51)) .cse0)) InVars {main_~x~0=v_main_~x~0_1925} OutVars{main_~x~0=v_main_~x~0_1924} AuxVars[] AssignedVars[main_~x~0] {26958#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:20:37,436 INFO L290 TraceCheckUtils]: 7: Hoare triple {26958#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [247] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {26958#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:20:37,437 INFO L290 TraceCheckUtils]: 8: Hoare triple {26958#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [248] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_1502 v_main_~y~0_1501)) (.cse1 (= v_main_~x~0_1927 v_main_~x~0_1926)) (.cse2 (<= 50 v_main_~x~0_1927))) (or (and .cse0 .cse1 (or (not (< v_main_~x~0_1927 100)) (not .cse2))) (and .cse0 .cse1) (and (= (+ v_main_~x~0_1927 v_main_~y~0_1501) (+ v_main_~x~0_1926 v_main_~y~0_1502)) (< v_main_~x~0_1927 v_main_~x~0_1926) (< v_main_~x~0_1926 101) .cse2))) InVars {main_~x~0=v_main_~x~0_1927, main_~y~0=v_main_~y~0_1502} OutVars{main_~x~0=v_main_~x~0_1926, main_~y~0=v_main_~y~0_1501} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {26959#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:20:37,438 INFO L290 TraceCheckUtils]: 9: Hoare triple {26959#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [245] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {26960#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:20:37,438 INFO L272 TraceCheckUtils]: 10: Hoare triple {26960#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {26961#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:20:37,439 INFO L290 TraceCheckUtils]: 11: Hoare triple {26961#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {26962#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:20:37,439 INFO L290 TraceCheckUtils]: 12: Hoare triple {26962#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {26953#false} is VALID [2022-04-15 06:20:37,439 INFO L290 TraceCheckUtils]: 13: Hoare triple {26953#false} assume !false; {26953#false} is VALID [2022-04-15 06:20:37,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:20:37,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:20:37,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232506154] [2022-04-15 06:20:37,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232506154] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:20:37,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538844256] [2022-04-15 06:20:37,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:20:37,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:20:37,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:20:37,441 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:20:37,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-04-15 06:20:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:20:37,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:20:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:20:37,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:20:37,761 INFO L272 TraceCheckUtils]: 0: Hoare triple {26952#true} call ULTIMATE.init(); {26952#true} is VALID [2022-04-15 06:20:37,761 INFO L290 TraceCheckUtils]: 1: Hoare triple {26952#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {26952#true} is VALID [2022-04-15 06:20:37,761 INFO L290 TraceCheckUtils]: 2: Hoare triple {26952#true} assume true; {26952#true} is VALID [2022-04-15 06:20:37,761 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {26952#true} {26952#true} #56#return; {26952#true} is VALID [2022-04-15 06:20:37,761 INFO L272 TraceCheckUtils]: 4: Hoare triple {26952#true} call #t~ret1 := main(); {26952#true} is VALID [2022-04-15 06:20:37,761 INFO L290 TraceCheckUtils]: 5: Hoare triple {26952#true} ~x~0 := 0;~y~0 := 50; {26982#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:20:37,762 INFO L290 TraceCheckUtils]: 6: Hoare triple {26982#(and (<= main_~x~0 0) (= main_~y~0 50))} [246] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1925 v_main_~x~0_1924))) (or (and (not (< v_main_~x~0_1925 50)) .cse0) (and (< v_main_~x~0_1925 v_main_~x~0_1924) (< v_main_~x~0_1924 51)) .cse0)) InVars {main_~x~0=v_main_~x~0_1925} OutVars{main_~x~0=v_main_~x~0_1924} AuxVars[] AssignedVars[main_~x~0] {26986#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:20:37,762 INFO L290 TraceCheckUtils]: 7: Hoare triple {26986#(and (= main_~y~0 50) (< main_~x~0 51))} [247] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {26986#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:20:37,763 INFO L290 TraceCheckUtils]: 8: Hoare triple {26986#(and (= main_~y~0 50) (< main_~x~0 51))} [248] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_1502 v_main_~y~0_1501)) (.cse1 (= v_main_~x~0_1927 v_main_~x~0_1926)) (.cse2 (<= 50 v_main_~x~0_1927))) (or (and .cse0 .cse1 (or (not (< v_main_~x~0_1927 100)) (not .cse2))) (and .cse0 .cse1) (and (= (+ v_main_~x~0_1927 v_main_~y~0_1501) (+ v_main_~x~0_1926 v_main_~y~0_1502)) (< v_main_~x~0_1927 v_main_~x~0_1926) (< v_main_~x~0_1926 101) .cse2))) InVars {main_~x~0=v_main_~x~0_1927, main_~y~0=v_main_~y~0_1502} OutVars{main_~x~0=v_main_~x~0_1926, main_~y~0=v_main_~y~0_1501} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {26993#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:20:37,764 INFO L290 TraceCheckUtils]: 9: Hoare triple {26993#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [245] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {26960#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:20:37,764 INFO L272 TraceCheckUtils]: 10: Hoare triple {26960#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {27000#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:20:37,765 INFO L290 TraceCheckUtils]: 11: Hoare triple {27000#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {27004#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:20:37,765 INFO L290 TraceCheckUtils]: 12: Hoare triple {27004#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {26953#false} is VALID [2022-04-15 06:20:37,765 INFO L290 TraceCheckUtils]: 13: Hoare triple {26953#false} assume !false; {26953#false} is VALID [2022-04-15 06:20:37,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:20:37,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:20:38,184 INFO L290 TraceCheckUtils]: 13: Hoare triple {26953#false} assume !false; {26953#false} is VALID [2022-04-15 06:20:38,185 INFO L290 TraceCheckUtils]: 12: Hoare triple {27004#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {26953#false} is VALID [2022-04-15 06:20:38,185 INFO L290 TraceCheckUtils]: 11: Hoare triple {27000#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {27004#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:20:38,186 INFO L272 TraceCheckUtils]: 10: Hoare triple {26960#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {27000#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:20:38,186 INFO L290 TraceCheckUtils]: 9: Hoare triple {27023#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [245] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {26960#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:20:38,187 INFO L290 TraceCheckUtils]: 8: Hoare triple {27027#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [248] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~y~0_1502 v_main_~y~0_1501)) (.cse1 (= v_main_~x~0_1927 v_main_~x~0_1926)) (.cse2 (<= 50 v_main_~x~0_1927))) (or (and .cse0 .cse1 (or (not (< v_main_~x~0_1927 100)) (not .cse2))) (and .cse0 .cse1) (and (= (+ v_main_~x~0_1927 v_main_~y~0_1501) (+ v_main_~x~0_1926 v_main_~y~0_1502)) (< v_main_~x~0_1927 v_main_~x~0_1926) (< v_main_~x~0_1926 101) .cse2))) InVars {main_~x~0=v_main_~x~0_1927, main_~y~0=v_main_~y~0_1502} OutVars{main_~x~0=v_main_~x~0_1926, main_~y~0=v_main_~y~0_1501} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {27023#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:20:38,187 INFO L290 TraceCheckUtils]: 7: Hoare triple {27027#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [247] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {27027#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:20:38,188 INFO L290 TraceCheckUtils]: 6: Hoare triple {27034#(and (<= 50 main_~y~0) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [246] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1925 v_main_~x~0_1924))) (or (and (not (< v_main_~x~0_1925 50)) .cse0) (and (< v_main_~x~0_1925 v_main_~x~0_1924) (< v_main_~x~0_1924 51)) .cse0)) InVars {main_~x~0=v_main_~x~0_1925} OutVars{main_~x~0=v_main_~x~0_1924} AuxVars[] AssignedVars[main_~x~0] {27027#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:20:38,189 INFO L290 TraceCheckUtils]: 5: Hoare triple {26952#true} ~x~0 := 0;~y~0 := 50; {27034#(and (<= 50 main_~y~0) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:20:38,189 INFO L272 TraceCheckUtils]: 4: Hoare triple {26952#true} call #t~ret1 := main(); {26952#true} is VALID [2022-04-15 06:20:38,189 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {26952#true} {26952#true} #56#return; {26952#true} is VALID [2022-04-15 06:20:38,189 INFO L290 TraceCheckUtils]: 2: Hoare triple {26952#true} assume true; {26952#true} is VALID [2022-04-15 06:20:38,189 INFO L290 TraceCheckUtils]: 1: Hoare triple {26952#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {26952#true} is VALID [2022-04-15 06:20:38,189 INFO L272 TraceCheckUtils]: 0: Hoare triple {26952#true} call ULTIMATE.init(); {26952#true} is VALID [2022-04-15 06:20:38,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:20:38,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538844256] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:20:38,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:20:38,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:20:40,558 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:20:40,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [440112034] [2022-04-15 06:20:40,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [440112034] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:20:40,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:20:40,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-04-15 06:20:40,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271450259] [2022-04-15 06:20:40,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:20:40,559 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 1.9074074074074074) internal successors, (103), 53 states have internal predecessors, (103), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 107 [2022-04-15 06:20:40,559 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:20:40,559 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 55 states, 54 states have (on average 1.9074074074074074) internal successors, (103), 53 states have internal predecessors, (103), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:40,654 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 107 edges. 107 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:20:40,654 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-04-15 06:20:40,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:20:40,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-04-15 06:20:40,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=418, Invalid=3872, Unknown=0, NotChecked=0, Total=4290 [2022-04-15 06:20:40,655 INFO L87 Difference]: Start difference. First operand 109 states and 111 transitions. Second operand has 55 states, 54 states have (on average 1.9074074074074074) internal successors, (103), 53 states have internal predecessors, (103), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:52,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:20:52,476 INFO L93 Difference]: Finished difference Result 118 states and 123 transitions. [2022-04-15 06:20:52,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-04-15 06:20:52,477 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 1.9074074074074074) internal successors, (103), 53 states have internal predecessors, (103), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 107 [2022-04-15 06:20:52,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:20:52,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.9074074074074074) internal successors, (103), 53 states have internal predecessors, (103), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:52,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 123 transitions. [2022-04-15 06:20:52,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.9074074074074074) internal successors, (103), 53 states have internal predecessors, (103), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:52,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 123 transitions. [2022-04-15 06:20:52,479 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 52 states and 123 transitions. [2022-04-15 06:20:52,586 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 123 edges. 123 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:20:52,587 INFO L225 Difference]: With dead ends: 118 [2022-04-15 06:20:52,587 INFO L226 Difference]: Without dead ends: 111 [2022-04-15 06:20:52,588 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 67 SyntacticMatches, 4 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2436 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=865, Invalid=12245, Unknown=0, NotChecked=0, Total=13110 [2022-04-15 06:20:52,589 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 57 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 5460 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 5514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 5460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-04-15 06:20:52,589 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 273 Invalid, 5514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 5460 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-04-15 06:20:52,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-04-15 06:20:52,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2022-04-15 06:20:52,759 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:20:52,759 INFO L82 GeneralOperation]: Start isEquivalent. First operand 111 states. Second operand has 111 states, 106 states have (on average 1.028301886792453) internal successors, (109), 106 states have internal predecessors, (109), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:52,759 INFO L74 IsIncluded]: Start isIncluded. First operand 111 states. Second operand has 111 states, 106 states have (on average 1.028301886792453) internal successors, (109), 106 states have internal predecessors, (109), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:52,759 INFO L87 Difference]: Start difference. First operand 111 states. Second operand has 111 states, 106 states have (on average 1.028301886792453) internal successors, (109), 106 states have internal predecessors, (109), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:52,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:20:52,760 INFO L93 Difference]: Finished difference Result 111 states and 113 transitions. [2022-04-15 06:20:52,760 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 113 transitions. [2022-04-15 06:20:52,760 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:20:52,760 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:20:52,761 INFO L74 IsIncluded]: Start isIncluded. First operand has 111 states, 106 states have (on average 1.028301886792453) internal successors, (109), 106 states have internal predecessors, (109), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 111 states. [2022-04-15 06:20:52,761 INFO L87 Difference]: Start difference. First operand has 111 states, 106 states have (on average 1.028301886792453) internal successors, (109), 106 states have internal predecessors, (109), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 111 states. [2022-04-15 06:20:52,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:20:52,761 INFO L93 Difference]: Finished difference Result 111 states and 113 transitions. [2022-04-15 06:20:52,762 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 113 transitions. [2022-04-15 06:20:52,762 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:20:52,762 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:20:52,762 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:20:52,762 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:20:52,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 106 states have (on average 1.028301886792453) internal successors, (109), 106 states have internal predecessors, (109), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:52,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 113 transitions. [2022-04-15 06:20:52,763 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 113 transitions. Word has length 107 [2022-04-15 06:20:52,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:20:52,763 INFO L478 AbstractCegarLoop]: Abstraction has 111 states and 113 transitions. [2022-04-15 06:20:52,763 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 1.9074074074074074) internal successors, (103), 53 states have internal predecessors, (103), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:52,763 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 111 states and 113 transitions. [2022-04-15 06:20:52,855 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 113 edges. 113 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:20:52,855 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 113 transitions. [2022-04-15 06:20:52,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-04-15 06:20:52,855 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:20:52,855 INFO L499 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:20:52,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-04-15 06:20:53,067 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-04-15 06:20:53,067 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:20:53,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:20:53,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1032111165, now seen corresponding path program 48 times [2022-04-15 06:20:53,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:20:53,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1059419015] [2022-04-15 06:20:53,171 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:20:53,388 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:20:53,389 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:20:53,392 INFO L85 PathProgramCache]: Analyzing trace with hash 799588812, now seen corresponding path program 1 times [2022-04-15 06:20:53,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:20:53,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407781629] [2022-04-15 06:20:53,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:20:53,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:20:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:20:53,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:20:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:20:53,500 INFO L290 TraceCheckUtils]: 0: Hoare triple {27893#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {27882#true} is VALID [2022-04-15 06:20:53,500 INFO L290 TraceCheckUtils]: 1: Hoare triple {27882#true} assume true; {27882#true} is VALID [2022-04-15 06:20:53,500 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {27882#true} {27882#true} #56#return; {27882#true} is VALID [2022-04-15 06:20:53,500 INFO L272 TraceCheckUtils]: 0: Hoare triple {27882#true} call ULTIMATE.init(); {27893#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:20:53,501 INFO L290 TraceCheckUtils]: 1: Hoare triple {27893#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {27882#true} is VALID [2022-04-15 06:20:53,501 INFO L290 TraceCheckUtils]: 2: Hoare triple {27882#true} assume true; {27882#true} is VALID [2022-04-15 06:20:53,501 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {27882#true} {27882#true} #56#return; {27882#true} is VALID [2022-04-15 06:20:53,501 INFO L272 TraceCheckUtils]: 4: Hoare triple {27882#true} call #t~ret1 := main(); {27882#true} is VALID [2022-04-15 06:20:53,501 INFO L290 TraceCheckUtils]: 5: Hoare triple {27882#true} ~x~0 := 0;~y~0 := 50; {27887#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:20:53,502 INFO L290 TraceCheckUtils]: 6: Hoare triple {27887#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [250] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1990 v_main_~x~0_1989))) (or (and .cse0 (not (< v_main_~x~0_1990 50))) (and (< v_main_~x~0_1989 51) (< v_main_~x~0_1990 v_main_~x~0_1989)) .cse0)) InVars {main_~x~0=v_main_~x~0_1990} OutVars{main_~x~0=v_main_~x~0_1989} AuxVars[] AssignedVars[main_~x~0] {27888#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:20:53,503 INFO L290 TraceCheckUtils]: 7: Hoare triple {27888#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [251] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {27888#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:20:53,503 INFO L290 TraceCheckUtils]: 8: Hoare triple {27888#(and (<= main_~x~0 main_~y~0) (<= main_~y~0 50))} [252] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1992 v_main_~x~0_1991)) (.cse1 (= v_main_~y~0_1558 v_main_~y~0_1557)) (.cse2 (<= 50 v_main_~x~0_1992))) (or (and .cse0 .cse1) (and (or (not .cse2) (not (< v_main_~x~0_1992 100))) .cse0 .cse1) (and (< v_main_~x~0_1992 v_main_~x~0_1991) .cse2 (< v_main_~x~0_1991 101) (= (+ v_main_~x~0_1991 v_main_~y~0_1558) (+ v_main_~x~0_1992 v_main_~y~0_1557))))) InVars {main_~x~0=v_main_~x~0_1992, main_~y~0=v_main_~y~0_1558} OutVars{main_~x~0=v_main_~x~0_1991, main_~y~0=v_main_~y~0_1557} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {27889#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:20:53,504 INFO L290 TraceCheckUtils]: 9: Hoare triple {27889#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [249] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {27890#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:20:53,505 INFO L272 TraceCheckUtils]: 10: Hoare triple {27890#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {27891#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:20:53,505 INFO L290 TraceCheckUtils]: 11: Hoare triple {27891#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {27892#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:20:53,506 INFO L290 TraceCheckUtils]: 12: Hoare triple {27892#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {27883#false} is VALID [2022-04-15 06:20:53,506 INFO L290 TraceCheckUtils]: 13: Hoare triple {27883#false} assume !false; {27883#false} is VALID [2022-04-15 06:20:53,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:20:53,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:20:53,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407781629] [2022-04-15 06:20:53,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407781629] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:20:53,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398438132] [2022-04-15 06:20:53,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:20:53,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:20:53,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:20:53,508 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:20:53,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-04-15 06:20:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:20:53,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:20:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:20:53,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:20:53,856 INFO L272 TraceCheckUtils]: 0: Hoare triple {27882#true} call ULTIMATE.init(); {27882#true} is VALID [2022-04-15 06:20:53,856 INFO L290 TraceCheckUtils]: 1: Hoare triple {27882#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {27882#true} is VALID [2022-04-15 06:20:53,856 INFO L290 TraceCheckUtils]: 2: Hoare triple {27882#true} assume true; {27882#true} is VALID [2022-04-15 06:20:53,856 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {27882#true} {27882#true} #56#return; {27882#true} is VALID [2022-04-15 06:20:53,856 INFO L272 TraceCheckUtils]: 4: Hoare triple {27882#true} call #t~ret1 := main(); {27882#true} is VALID [2022-04-15 06:20:53,857 INFO L290 TraceCheckUtils]: 5: Hoare triple {27882#true} ~x~0 := 0;~y~0 := 50; {27912#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:20:53,857 INFO L290 TraceCheckUtils]: 6: Hoare triple {27912#(and (<= main_~x~0 0) (= main_~y~0 50))} [250] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1990 v_main_~x~0_1989))) (or (and .cse0 (not (< v_main_~x~0_1990 50))) (and (< v_main_~x~0_1989 51) (< v_main_~x~0_1990 v_main_~x~0_1989)) .cse0)) InVars {main_~x~0=v_main_~x~0_1990} OutVars{main_~x~0=v_main_~x~0_1989} AuxVars[] AssignedVars[main_~x~0] {27916#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:20:53,858 INFO L290 TraceCheckUtils]: 7: Hoare triple {27916#(and (= main_~y~0 50) (< main_~x~0 51))} [251] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {27916#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:20:53,859 INFO L290 TraceCheckUtils]: 8: Hoare triple {27916#(and (= main_~y~0 50) (< main_~x~0 51))} [252] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1992 v_main_~x~0_1991)) (.cse1 (= v_main_~y~0_1558 v_main_~y~0_1557)) (.cse2 (<= 50 v_main_~x~0_1992))) (or (and .cse0 .cse1) (and (or (not .cse2) (not (< v_main_~x~0_1992 100))) .cse0 .cse1) (and (< v_main_~x~0_1992 v_main_~x~0_1991) .cse2 (< v_main_~x~0_1991 101) (= (+ v_main_~x~0_1991 v_main_~y~0_1558) (+ v_main_~x~0_1992 v_main_~y~0_1557))))) InVars {main_~x~0=v_main_~x~0_1992, main_~y~0=v_main_~y~0_1558} OutVars{main_~x~0=v_main_~x~0_1991, main_~y~0=v_main_~y~0_1557} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {27923#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:20:53,859 INFO L290 TraceCheckUtils]: 9: Hoare triple {27923#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [249] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {27890#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:20:53,860 INFO L272 TraceCheckUtils]: 10: Hoare triple {27890#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {27930#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:20:53,860 INFO L290 TraceCheckUtils]: 11: Hoare triple {27930#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {27934#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:20:53,860 INFO L290 TraceCheckUtils]: 12: Hoare triple {27934#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {27883#false} is VALID [2022-04-15 06:20:53,860 INFO L290 TraceCheckUtils]: 13: Hoare triple {27883#false} assume !false; {27883#false} is VALID [2022-04-15 06:20:53,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:20:53,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:20:54,288 INFO L290 TraceCheckUtils]: 13: Hoare triple {27883#false} assume !false; {27883#false} is VALID [2022-04-15 06:20:54,289 INFO L290 TraceCheckUtils]: 12: Hoare triple {27934#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {27883#false} is VALID [2022-04-15 06:20:54,289 INFO L290 TraceCheckUtils]: 11: Hoare triple {27930#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {27934#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:20:54,289 INFO L272 TraceCheckUtils]: 10: Hoare triple {27890#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {27930#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:20:54,290 INFO L290 TraceCheckUtils]: 9: Hoare triple {27953#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [249] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {27890#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:20:54,291 INFO L290 TraceCheckUtils]: 8: Hoare triple {27957#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [252] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1992 v_main_~x~0_1991)) (.cse1 (= v_main_~y~0_1558 v_main_~y~0_1557)) (.cse2 (<= 50 v_main_~x~0_1992))) (or (and .cse0 .cse1) (and (or (not .cse2) (not (< v_main_~x~0_1992 100))) .cse0 .cse1) (and (< v_main_~x~0_1992 v_main_~x~0_1991) .cse2 (< v_main_~x~0_1991 101) (= (+ v_main_~x~0_1991 v_main_~y~0_1558) (+ v_main_~x~0_1992 v_main_~y~0_1557))))) InVars {main_~x~0=v_main_~x~0_1992, main_~y~0=v_main_~y~0_1558} OutVars{main_~x~0=v_main_~x~0_1991, main_~y~0=v_main_~y~0_1557} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {27953#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:20:54,291 INFO L290 TraceCheckUtils]: 7: Hoare triple {27957#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [251] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {27957#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:20:54,292 INFO L290 TraceCheckUtils]: 6: Hoare triple {27964#(and (<= 50 main_~y~0) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [250] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_1990 v_main_~x~0_1989))) (or (and .cse0 (not (< v_main_~x~0_1990 50))) (and (< v_main_~x~0_1989 51) (< v_main_~x~0_1990 v_main_~x~0_1989)) .cse0)) InVars {main_~x~0=v_main_~x~0_1990} OutVars{main_~x~0=v_main_~x~0_1989} AuxVars[] AssignedVars[main_~x~0] {27957#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:20:54,292 INFO L290 TraceCheckUtils]: 5: Hoare triple {27882#true} ~x~0 := 0;~y~0 := 50; {27964#(and (<= 50 main_~y~0) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (<= main_~y~0 main_~x~0))) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:20:54,293 INFO L272 TraceCheckUtils]: 4: Hoare triple {27882#true} call #t~ret1 := main(); {27882#true} is VALID [2022-04-15 06:20:54,293 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {27882#true} {27882#true} #56#return; {27882#true} is VALID [2022-04-15 06:20:54,293 INFO L290 TraceCheckUtils]: 2: Hoare triple {27882#true} assume true; {27882#true} is VALID [2022-04-15 06:20:54,293 INFO L290 TraceCheckUtils]: 1: Hoare triple {27882#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {27882#true} is VALID [2022-04-15 06:20:54,293 INFO L272 TraceCheckUtils]: 0: Hoare triple {27882#true} call ULTIMATE.init(); {27882#true} is VALID [2022-04-15 06:20:54,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:20:54,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398438132] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:20:54,293 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:20:54,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:20:56,699 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:20:56,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1059419015] [2022-04-15 06:20:56,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1059419015] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:20:56,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:20:56,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-04-15 06:20:56,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059529261] [2022-04-15 06:20:56,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:20:56,700 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 1.9090909090909092) internal successors, (105), 54 states have internal predecessors, (105), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2022-04-15 06:20:56,700 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:20:56,700 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 56 states, 55 states have (on average 1.9090909090909092) internal successors, (105), 54 states have internal predecessors, (105), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:20:56,782 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 109 edges. 109 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:20:56,782 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-04-15 06:20:56,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:20:56,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-04-15 06:20:56,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=3997, Unknown=0, NotChecked=0, Total=4422 [2022-04-15 06:20:56,783 INFO L87 Difference]: Start difference. First operand 111 states and 113 transitions. Second operand has 56 states, 55 states have (on average 1.9090909090909092) internal successors, (105), 54 states have internal predecessors, (105), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:21:06,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:21:06,616 INFO L93 Difference]: Finished difference Result 120 states and 125 transitions. [2022-04-15 06:21:06,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-04-15 06:21:06,617 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 1.9090909090909092) internal successors, (105), 54 states have internal predecessors, (105), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2022-04-15 06:21:06,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:21:06,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.9090909090909092) internal successors, (105), 54 states have internal predecessors, (105), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:21:06,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 125 transitions. [2022-04-15 06:21:06,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.9090909090909092) internal successors, (105), 54 states have internal predecessors, (105), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:21:06,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 125 transitions. [2022-04-15 06:21:06,618 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 53 states and 125 transitions. [2022-04-15 06:21:06,722 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 125 edges. 125 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:21:06,723 INFO L225 Difference]: With dead ends: 120 [2022-04-15 06:21:06,723 INFO L226 Difference]: Without dead ends: 113 [2022-04-15 06:21:06,724 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 68 SyntacticMatches, 4 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2509 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=881, Invalid=12691, Unknown=0, NotChecked=0, Total=13572 [2022-04-15 06:21:06,724 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 58 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 5568 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 5623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 5568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-04-15 06:21:06,724 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 273 Invalid, 5623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 5568 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-04-15 06:21:06,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-04-15 06:21:06,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2022-04-15 06:21:06,901 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:21:06,901 INFO L82 GeneralOperation]: Start isEquivalent. First operand 113 states. Second operand has 113 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 108 states have internal predecessors, (111), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:21:06,901 INFO L74 IsIncluded]: Start isIncluded. First operand 113 states. Second operand has 113 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 108 states have internal predecessors, (111), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:21:06,902 INFO L87 Difference]: Start difference. First operand 113 states. Second operand has 113 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 108 states have internal predecessors, (111), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:21:06,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:21:06,903 INFO L93 Difference]: Finished difference Result 113 states and 115 transitions. [2022-04-15 06:21:06,903 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2022-04-15 06:21:06,903 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:21:06,903 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:21:06,903 INFO L74 IsIncluded]: Start isIncluded. First operand has 113 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 108 states have internal predecessors, (111), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 113 states. [2022-04-15 06:21:06,903 INFO L87 Difference]: Start difference. First operand has 113 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 108 states have internal predecessors, (111), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 113 states. [2022-04-15 06:21:06,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:21:06,905 INFO L93 Difference]: Finished difference Result 113 states and 115 transitions. [2022-04-15 06:21:06,905 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2022-04-15 06:21:06,905 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:21:06,905 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:21:06,905 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:21:06,905 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:21:06,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 108 states have internal predecessors, (111), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:21:06,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2022-04-15 06:21:06,907 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 109 [2022-04-15 06:21:06,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:21:06,907 INFO L478 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2022-04-15 06:21:06,907 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 1.9090909090909092) internal successors, (105), 54 states have internal predecessors, (105), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:21:06,907 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 113 states and 115 transitions. [2022-04-15 06:21:07,004 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 115 edges. 115 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:21:07,004 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2022-04-15 06:21:07,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-04-15 06:21:07,004 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:21:07,004 INFO L499 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:21:07,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-04-15 06:21:07,205 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:21:07,205 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:21:07,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:21:07,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1348288094, now seen corresponding path program 49 times [2022-04-15 06:21:07,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:21:07,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1149455359] [2022-04-15 06:21:11,271 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-15 06:21:11,322 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:21:11,557 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:21:11,558 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:21:11,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1445846324, now seen corresponding path program 1 times [2022-04-15 06:21:11,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:21:11,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768689662] [2022-04-15 06:21:11,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:21:11,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:21:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:21:11,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:21:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:21:11,679 INFO L290 TraceCheckUtils]: 0: Hoare triple {28838#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {28827#true} is VALID [2022-04-15 06:21:11,679 INFO L290 TraceCheckUtils]: 1: Hoare triple {28827#true} assume true; {28827#true} is VALID [2022-04-15 06:21:11,679 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {28827#true} {28827#true} #56#return; {28827#true} is VALID [2022-04-15 06:21:11,680 INFO L272 TraceCheckUtils]: 0: Hoare triple {28827#true} call ULTIMATE.init(); {28838#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:21:11,680 INFO L290 TraceCheckUtils]: 1: Hoare triple {28838#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {28827#true} is VALID [2022-04-15 06:21:11,680 INFO L290 TraceCheckUtils]: 2: Hoare triple {28827#true} assume true; {28827#true} is VALID [2022-04-15 06:21:11,680 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {28827#true} {28827#true} #56#return; {28827#true} is VALID [2022-04-15 06:21:11,680 INFO L272 TraceCheckUtils]: 4: Hoare triple {28827#true} call #t~ret1 := main(); {28827#true} is VALID [2022-04-15 06:21:11,680 INFO L290 TraceCheckUtils]: 5: Hoare triple {28827#true} ~x~0 := 0;~y~0 := 50; {28832#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:21:11,681 INFO L290 TraceCheckUtils]: 6: Hoare triple {28832#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [254] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_2056 v_main_~x~0_2055))) (or (and (<= 50 v_main_~x~0_2056) .cse0) .cse0 (and (< v_main_~x~0_2055 51) (< v_main_~x~0_2056 v_main_~x~0_2055)))) InVars {main_~x~0=v_main_~x~0_2056} OutVars{main_~x~0=v_main_~x~0_2055} AuxVars[] AssignedVars[main_~x~0] {28833#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:21:11,682 INFO L290 TraceCheckUtils]: 7: Hoare triple {28833#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [255] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {28833#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:21:11,683 INFO L290 TraceCheckUtils]: 8: Hoare triple {28833#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [256] L28-2-->L27-2_primed: Formula: (let ((.cse1 (<= 50 v_main_~x~0_2058)) (.cse0 (= v_main_~x~0_2058 v_main_~x~0_2057)) (.cse2 (= v_main_~y~0_1615 v_main_~y~0_1614))) (or (and .cse0 (or (not .cse1) (not (< v_main_~x~0_2058 100))) .cse2) (let ((.cse3 (+ v_main_~x~0_2058 v_main_~y~0_1614))) (and (< v_main_~y~0_1615 v_main_~y~0_1614) (< .cse3 (+ 101 v_main_~y~0_1615)) .cse1 (= (+ v_main_~x~0_2057 v_main_~y~0_1615) .cse3))) (and .cse0 .cse2))) InVars {main_~x~0=v_main_~x~0_2058, main_~y~0=v_main_~y~0_1615} OutVars{main_~x~0=v_main_~x~0_2057, main_~y~0=v_main_~y~0_1614} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {28834#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:21:11,683 INFO L290 TraceCheckUtils]: 9: Hoare triple {28834#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [253] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {28835#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:21:11,684 INFO L272 TraceCheckUtils]: 10: Hoare triple {28835#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {28836#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:21:11,684 INFO L290 TraceCheckUtils]: 11: Hoare triple {28836#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {28837#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:21:11,685 INFO L290 TraceCheckUtils]: 12: Hoare triple {28837#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {28828#false} is VALID [2022-04-15 06:21:11,685 INFO L290 TraceCheckUtils]: 13: Hoare triple {28828#false} assume !false; {28828#false} is VALID [2022-04-15 06:21:11,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:21:11,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:21:11,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768689662] [2022-04-15 06:21:11,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768689662] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:21:11,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441486673] [2022-04-15 06:21:11,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:21:11,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:21:11,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:21:11,687 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:21:11,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-04-15 06:21:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:21:11,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:21:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:21:11,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:21:12,017 INFO L272 TraceCheckUtils]: 0: Hoare triple {28827#true} call ULTIMATE.init(); {28827#true} is VALID [2022-04-15 06:21:12,018 INFO L290 TraceCheckUtils]: 1: Hoare triple {28827#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {28827#true} is VALID [2022-04-15 06:21:12,018 INFO L290 TraceCheckUtils]: 2: Hoare triple {28827#true} assume true; {28827#true} is VALID [2022-04-15 06:21:12,018 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {28827#true} {28827#true} #56#return; {28827#true} is VALID [2022-04-15 06:21:12,018 INFO L272 TraceCheckUtils]: 4: Hoare triple {28827#true} call #t~ret1 := main(); {28827#true} is VALID [2022-04-15 06:21:12,018 INFO L290 TraceCheckUtils]: 5: Hoare triple {28827#true} ~x~0 := 0;~y~0 := 50; {28857#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:21:12,019 INFO L290 TraceCheckUtils]: 6: Hoare triple {28857#(and (<= main_~x~0 0) (= main_~y~0 50))} [254] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_2056 v_main_~x~0_2055))) (or (and (<= 50 v_main_~x~0_2056) .cse0) .cse0 (and (< v_main_~x~0_2055 51) (< v_main_~x~0_2056 v_main_~x~0_2055)))) InVars {main_~x~0=v_main_~x~0_2056} OutVars{main_~x~0=v_main_~x~0_2055} AuxVars[] AssignedVars[main_~x~0] {28861#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:21:12,019 INFO L290 TraceCheckUtils]: 7: Hoare triple {28861#(and (= main_~y~0 50) (< main_~x~0 51))} [255] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {28861#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:21:12,020 INFO L290 TraceCheckUtils]: 8: Hoare triple {28861#(and (= main_~y~0 50) (< main_~x~0 51))} [256] L28-2-->L27-2_primed: Formula: (let ((.cse1 (<= 50 v_main_~x~0_2058)) (.cse0 (= v_main_~x~0_2058 v_main_~x~0_2057)) (.cse2 (= v_main_~y~0_1615 v_main_~y~0_1614))) (or (and .cse0 (or (not .cse1) (not (< v_main_~x~0_2058 100))) .cse2) (let ((.cse3 (+ v_main_~x~0_2058 v_main_~y~0_1614))) (and (< v_main_~y~0_1615 v_main_~y~0_1614) (< .cse3 (+ 101 v_main_~y~0_1615)) .cse1 (= (+ v_main_~x~0_2057 v_main_~y~0_1615) .cse3))) (and .cse0 .cse2))) InVars {main_~x~0=v_main_~x~0_2058, main_~y~0=v_main_~y~0_1615} OutVars{main_~x~0=v_main_~x~0_2057, main_~y~0=v_main_~y~0_1614} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {28868#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:21:12,020 INFO L290 TraceCheckUtils]: 9: Hoare triple {28868#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [253] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {28835#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:21:12,021 INFO L272 TraceCheckUtils]: 10: Hoare triple {28835#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {28875#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:21:12,021 INFO L290 TraceCheckUtils]: 11: Hoare triple {28875#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {28879#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:21:12,022 INFO L290 TraceCheckUtils]: 12: Hoare triple {28879#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {28828#false} is VALID [2022-04-15 06:21:12,022 INFO L290 TraceCheckUtils]: 13: Hoare triple {28828#false} assume !false; {28828#false} is VALID [2022-04-15 06:21:12,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:21:12,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:21:12,465 INFO L290 TraceCheckUtils]: 13: Hoare triple {28828#false} assume !false; {28828#false} is VALID [2022-04-15 06:21:12,466 INFO L290 TraceCheckUtils]: 12: Hoare triple {28879#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {28828#false} is VALID [2022-04-15 06:21:12,466 INFO L290 TraceCheckUtils]: 11: Hoare triple {28875#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {28879#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:21:12,467 INFO L272 TraceCheckUtils]: 10: Hoare triple {28835#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {28875#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:21:12,467 INFO L290 TraceCheckUtils]: 9: Hoare triple {28898#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [253] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {28835#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:21:12,468 INFO L290 TraceCheckUtils]: 8: Hoare triple {28902#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [256] L28-2-->L27-2_primed: Formula: (let ((.cse1 (<= 50 v_main_~x~0_2058)) (.cse0 (= v_main_~x~0_2058 v_main_~x~0_2057)) (.cse2 (= v_main_~y~0_1615 v_main_~y~0_1614))) (or (and .cse0 (or (not .cse1) (not (< v_main_~x~0_2058 100))) .cse2) (let ((.cse3 (+ v_main_~x~0_2058 v_main_~y~0_1614))) (and (< v_main_~y~0_1615 v_main_~y~0_1614) (< .cse3 (+ 101 v_main_~y~0_1615)) .cse1 (= (+ v_main_~x~0_2057 v_main_~y~0_1615) .cse3))) (and .cse0 .cse2))) InVars {main_~x~0=v_main_~x~0_2058, main_~y~0=v_main_~y~0_1615} OutVars{main_~x~0=v_main_~x~0_2057, main_~y~0=v_main_~y~0_1614} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {28898#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:21:12,469 INFO L290 TraceCheckUtils]: 7: Hoare triple {28902#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [255] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {28902#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:21:12,470 INFO L290 TraceCheckUtils]: 6: Hoare triple {28909#(and (<= 50 main_~y~0) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} [254] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_2056 v_main_~x~0_2055))) (or (and (<= 50 v_main_~x~0_2056) .cse0) .cse0 (and (< v_main_~x~0_2055 51) (< v_main_~x~0_2056 v_main_~x~0_2055)))) InVars {main_~x~0=v_main_~x~0_2056} OutVars{main_~x~0=v_main_~x~0_2055} AuxVars[] AssignedVars[main_~x~0] {28902#(and (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:21:12,470 INFO L290 TraceCheckUtils]: 5: Hoare triple {28827#true} ~x~0 := 0;~y~0 := 50; {28909#(and (<= 50 main_~y~0) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (not (<= 50 main_~x~0)) (and (or (< main_~x~0 (+ main_~y~0 1)) (<= 100 main_~x~0)) (<= main_~y~0 main_~x~0))) (or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100))))} is VALID [2022-04-15 06:21:12,470 INFO L272 TraceCheckUtils]: 4: Hoare triple {28827#true} call #t~ret1 := main(); {28827#true} is VALID [2022-04-15 06:21:12,470 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {28827#true} {28827#true} #56#return; {28827#true} is VALID [2022-04-15 06:21:12,470 INFO L290 TraceCheckUtils]: 2: Hoare triple {28827#true} assume true; {28827#true} is VALID [2022-04-15 06:21:12,470 INFO L290 TraceCheckUtils]: 1: Hoare triple {28827#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {28827#true} is VALID [2022-04-15 06:21:12,470 INFO L272 TraceCheckUtils]: 0: Hoare triple {28827#true} call ULTIMATE.init(); {28827#true} is VALID [2022-04-15 06:21:12,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:21:12,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441486673] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:21:12,471 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:21:12,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:21:14,931 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:21:14,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1149455359] [2022-04-15 06:21:14,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1149455359] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:21:14,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:21:14,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-04-15 06:21:14,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703733395] [2022-04-15 06:21:14,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:21:14,932 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 1.9107142857142858) internal successors, (107), 55 states have internal predecessors, (107), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2022-04-15 06:21:14,932 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:21:14,932 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 57 states, 56 states have (on average 1.9107142857142858) internal successors, (107), 55 states have internal predecessors, (107), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:21:15,023 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 111 edges. 111 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:21:15,024 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-04-15 06:21:15,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:21:15,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-04-15 06:21:15,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=432, Invalid=4124, Unknown=0, NotChecked=0, Total=4556 [2022-04-15 06:21:15,024 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand has 57 states, 56 states have (on average 1.9107142857142858) internal successors, (107), 55 states have internal predecessors, (107), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:21:25,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:21:25,345 INFO L93 Difference]: Finished difference Result 127 states and 134 transitions. [2022-04-15 06:21:25,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-04-15 06:21:25,345 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 1.9107142857142858) internal successors, (107), 55 states have internal predecessors, (107), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2022-04-15 06:21:25,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:21:25,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.9107142857142858) internal successors, (107), 55 states have internal predecessors, (107), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:21:25,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 134 transitions. [2022-04-15 06:21:25,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.9107142857142858) internal successors, (107), 55 states have internal predecessors, (107), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:21:25,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 134 transitions. [2022-04-15 06:21:25,348 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 57 states and 134 transitions. [2022-04-15 06:21:25,457 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 134 edges. 134 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:21:25,459 INFO L225 Difference]: With dead ends: 127 [2022-04-15 06:21:25,459 INFO L226 Difference]: Without dead ends: 117 [2022-04-15 06:21:25,460 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 69 SyntacticMatches, 4 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2909 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=913, Invalid=13849, Unknown=0, NotChecked=0, Total=14762 [2022-04-15 06:21:25,460 INFO L913 BasicCegarLoop]: 12 mSDtfsCounter, 67 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 5938 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 5997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 5938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-04-15 06:21:25,460 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 279 Invalid, 5997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 5938 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-04-15 06:21:25,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-04-15 06:21:25,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-04-15 06:21:25,646 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:21:25,646 INFO L82 GeneralOperation]: Start isEquivalent. First operand 117 states. Second operand has 117 states, 112 states have (on average 1.0357142857142858) internal successors, (116), 112 states have internal predecessors, (116), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:21:25,646 INFO L74 IsIncluded]: Start isIncluded. First operand 117 states. Second operand has 117 states, 112 states have (on average 1.0357142857142858) internal successors, (116), 112 states have internal predecessors, (116), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:21:25,647 INFO L87 Difference]: Start difference. First operand 117 states. Second operand has 117 states, 112 states have (on average 1.0357142857142858) internal successors, (116), 112 states have internal predecessors, (116), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:21:25,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:21:25,648 INFO L93 Difference]: Finished difference Result 117 states and 120 transitions. [2022-04-15 06:21:25,648 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 120 transitions. [2022-04-15 06:21:25,648 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:21:25,648 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:21:25,648 INFO L74 IsIncluded]: Start isIncluded. First operand has 117 states, 112 states have (on average 1.0357142857142858) internal successors, (116), 112 states have internal predecessors, (116), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 117 states. [2022-04-15 06:21:25,649 INFO L87 Difference]: Start difference. First operand has 117 states, 112 states have (on average 1.0357142857142858) internal successors, (116), 112 states have internal predecessors, (116), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 117 states. [2022-04-15 06:21:25,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:21:25,650 INFO L93 Difference]: Finished difference Result 117 states and 120 transitions. [2022-04-15 06:21:25,650 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 120 transitions. [2022-04-15 06:21:25,650 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:21:25,650 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:21:25,650 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:21:25,650 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:21:25,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 112 states have (on average 1.0357142857142858) internal successors, (116), 112 states have internal predecessors, (116), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:21:25,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 120 transitions. [2022-04-15 06:21:25,651 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 120 transitions. Word has length 111 [2022-04-15 06:21:25,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:21:25,652 INFO L478 AbstractCegarLoop]: Abstraction has 117 states and 120 transitions. [2022-04-15 06:21:25,652 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 1.9107142857142858) internal successors, (107), 55 states have internal predecessors, (107), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:21:25,652 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 117 states and 120 transitions. [2022-04-15 06:21:25,746 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 120 edges. 120 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:21:25,746 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 120 transitions. [2022-04-15 06:21:25,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-04-15 06:21:25,746 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:21:25,746 INFO L499 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:21:25,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-04-15 06:21:25,951 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2022-04-15 06:21:25,951 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:21:25,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:21:25,952 INFO L85 PathProgramCache]: Analyzing trace with hash -547208364, now seen corresponding path program 50 times [2022-04-15 06:21:25,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:21:25,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [276252362] [2022-04-15 06:21:30,015 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-15 06:21:30,058 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:21:30,285 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:21:30,286 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:21:30,288 INFO L85 PathProgramCache]: Analyzing trace with hash 603685836, now seen corresponding path program 1 times [2022-04-15 06:21:30,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:21:30,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966223039] [2022-04-15 06:21:30,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:21:30,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:21:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:21:30,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:21:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:21:30,374 INFO L290 TraceCheckUtils]: 0: Hoare triple {29822#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {29811#true} is VALID [2022-04-15 06:21:30,375 INFO L290 TraceCheckUtils]: 1: Hoare triple {29811#true} assume true; {29811#true} is VALID [2022-04-15 06:21:30,375 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {29811#true} {29811#true} #56#return; {29811#true} is VALID [2022-04-15 06:21:30,376 INFO L272 TraceCheckUtils]: 0: Hoare triple {29811#true} call ULTIMATE.init(); {29822#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:21:30,376 INFO L290 TraceCheckUtils]: 1: Hoare triple {29822#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {29811#true} is VALID [2022-04-15 06:21:30,376 INFO L290 TraceCheckUtils]: 2: Hoare triple {29811#true} assume true; {29811#true} is VALID [2022-04-15 06:21:30,376 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {29811#true} {29811#true} #56#return; {29811#true} is VALID [2022-04-15 06:21:30,376 INFO L272 TraceCheckUtils]: 4: Hoare triple {29811#true} call #t~ret1 := main(); {29811#true} is VALID [2022-04-15 06:21:30,377 INFO L290 TraceCheckUtils]: 5: Hoare triple {29811#true} ~x~0 := 0;~y~0 := 50; {29816#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} is VALID [2022-04-15 06:21:30,377 INFO L290 TraceCheckUtils]: 6: Hoare triple {29816#(and (= main_~x~0 0) (<= 50 main_~y~0) (<= main_~y~0 50))} [258] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_2123 v_main_~x~0_2122))) (or .cse0 (and (< v_main_~x~0_2123 v_main_~x~0_2122) (< v_main_~x~0_2122 51)) (and .cse0 (<= 50 v_main_~x~0_2123)))) InVars {main_~x~0=v_main_~x~0_2123} OutVars{main_~x~0=v_main_~x~0_2122} AuxVars[] AssignedVars[main_~x~0] {29817#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:21:30,378 INFO L290 TraceCheckUtils]: 7: Hoare triple {29817#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [259] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {29817#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} is VALID [2022-04-15 06:21:30,378 INFO L290 TraceCheckUtils]: 8: Hoare triple {29817#(or (= main_~x~0 0) (and (<= main_~x~0 main_~y~0) (<= main_~y~0 50)))} [260] L28-2-->L27-2_primed: Formula: (let ((.cse2 (= v_main_~x~0_2125 v_main_~x~0_2124)) (.cse0 (<= 50 v_main_~x~0_2125)) (.cse3 (= v_main_~y~0_1673 v_main_~y~0_1672))) (or (let ((.cse1 (+ v_main_~x~0_2125 v_main_~y~0_1672))) (and (< v_main_~y~0_1673 v_main_~y~0_1672) .cse0 (< .cse1 (+ 101 v_main_~y~0_1673)) (= .cse1 (+ v_main_~x~0_2124 v_main_~y~0_1673)))) (and .cse2 .cse3) (and .cse2 (or (not (< v_main_~x~0_2125 100)) (not .cse0)) .cse3))) InVars {main_~x~0=v_main_~x~0_2125, main_~y~0=v_main_~y~0_1673} OutVars{main_~x~0=v_main_~x~0_2124, main_~y~0=v_main_~y~0_1672} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {29818#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} is VALID [2022-04-15 06:21:30,379 INFO L290 TraceCheckUtils]: 9: Hoare triple {29818#(or (and (or (<= main_~x~0 main_~y~0) (not (<= main_~y~0 99))) (<= main_~y~0 100)) (<= main_~x~0 50))} [257] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {29819#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:21:30,379 INFO L272 TraceCheckUtils]: 10: Hoare triple {29819#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {29820#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:21:30,380 INFO L290 TraceCheckUtils]: 11: Hoare triple {29820#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {29821#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:21:30,380 INFO L290 TraceCheckUtils]: 12: Hoare triple {29821#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {29812#false} is VALID [2022-04-15 06:21:30,380 INFO L290 TraceCheckUtils]: 13: Hoare triple {29812#false} assume !false; {29812#false} is VALID [2022-04-15 06:21:30,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:21:30,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:21:30,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966223039] [2022-04-15 06:21:30,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966223039] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-15 06:21:30,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932977305] [2022-04-15 06:21:30,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:21:30,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 06:21:30,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:21:30,381 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 06:21:30,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-04-15 06:21:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:21:30,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 06:21:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:21:30,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 06:21:30,672 INFO L272 TraceCheckUtils]: 0: Hoare triple {29811#true} call ULTIMATE.init(); {29811#true} is VALID [2022-04-15 06:21:30,673 INFO L290 TraceCheckUtils]: 1: Hoare triple {29811#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {29811#true} is VALID [2022-04-15 06:21:30,673 INFO L290 TraceCheckUtils]: 2: Hoare triple {29811#true} assume true; {29811#true} is VALID [2022-04-15 06:21:30,673 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {29811#true} {29811#true} #56#return; {29811#true} is VALID [2022-04-15 06:21:30,673 INFO L272 TraceCheckUtils]: 4: Hoare triple {29811#true} call #t~ret1 := main(); {29811#true} is VALID [2022-04-15 06:21:30,673 INFO L290 TraceCheckUtils]: 5: Hoare triple {29811#true} ~x~0 := 0;~y~0 := 50; {29841#(and (<= main_~x~0 0) (= main_~y~0 50))} is VALID [2022-04-15 06:21:30,674 INFO L290 TraceCheckUtils]: 6: Hoare triple {29841#(and (<= main_~x~0 0) (= main_~y~0 50))} [258] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_2123 v_main_~x~0_2122))) (or .cse0 (and (< v_main_~x~0_2123 v_main_~x~0_2122) (< v_main_~x~0_2122 51)) (and .cse0 (<= 50 v_main_~x~0_2123)))) InVars {main_~x~0=v_main_~x~0_2123} OutVars{main_~x~0=v_main_~x~0_2122} AuxVars[] AssignedVars[main_~x~0] {29845#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:21:30,674 INFO L290 TraceCheckUtils]: 7: Hoare triple {29845#(and (= main_~y~0 50) (< main_~x~0 51))} [259] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {29845#(and (= main_~y~0 50) (< main_~x~0 51))} is VALID [2022-04-15 06:21:30,675 INFO L290 TraceCheckUtils]: 8: Hoare triple {29845#(and (= main_~y~0 50) (< main_~x~0 51))} [260] L28-2-->L27-2_primed: Formula: (let ((.cse2 (= v_main_~x~0_2125 v_main_~x~0_2124)) (.cse0 (<= 50 v_main_~x~0_2125)) (.cse3 (= v_main_~y~0_1673 v_main_~y~0_1672))) (or (let ((.cse1 (+ v_main_~x~0_2125 v_main_~y~0_1672))) (and (< v_main_~y~0_1673 v_main_~y~0_1672) .cse0 (< .cse1 (+ 101 v_main_~y~0_1673)) (= .cse1 (+ v_main_~x~0_2124 v_main_~y~0_1673)))) (and .cse2 .cse3) (and .cse2 (or (not (< v_main_~x~0_2125 100)) (not .cse0)) .cse3))) InVars {main_~x~0=v_main_~x~0_2125, main_~y~0=v_main_~y~0_1673} OutVars{main_~x~0=v_main_~x~0_2124, main_~y~0=v_main_~y~0_1672} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {29852#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:21:30,675 INFO L290 TraceCheckUtils]: 9: Hoare triple {29852#(or (and (= main_~y~0 50) (< main_~x~0 51)) (and (< main_~x~0 (+ main_~y~0 1)) (< main_~x~0 101) (< 50 main_~y~0) (<= main_~y~0 main_~x~0)))} [257] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {29819#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:21:30,676 INFO L272 TraceCheckUtils]: 10: Hoare triple {29819#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {29859#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:21:30,676 INFO L290 TraceCheckUtils]: 11: Hoare triple {29859#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {29863#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:21:30,677 INFO L290 TraceCheckUtils]: 12: Hoare triple {29863#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {29812#false} is VALID [2022-04-15 06:21:30,677 INFO L290 TraceCheckUtils]: 13: Hoare triple {29812#false} assume !false; {29812#false} is VALID [2022-04-15 06:21:30,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:21:30,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 06:21:31,106 INFO L290 TraceCheckUtils]: 13: Hoare triple {29812#false} assume !false; {29812#false} is VALID [2022-04-15 06:21:31,106 INFO L290 TraceCheckUtils]: 12: Hoare triple {29863#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {29812#false} is VALID [2022-04-15 06:21:31,106 INFO L290 TraceCheckUtils]: 11: Hoare triple {29859#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {29863#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 06:21:31,107 INFO L272 TraceCheckUtils]: 10: Hoare triple {29819#(and (< 99 main_~y~0) (<= main_~y~0 100))} call __VERIFIER_assert((if 100 == ~y~0 then 1 else 0)); {29859#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 06:21:31,107 INFO L290 TraceCheckUtils]: 9: Hoare triple {29882#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} [257] L27-2_primed-->L27-2: Formula: (not (< v_main_~x~0_1 100)) InVars {main_~x~0=v_main_~x~0_1} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[] {29819#(and (< 99 main_~y~0) (<= main_~y~0 100))} is VALID [2022-04-15 06:21:31,108 INFO L290 TraceCheckUtils]: 8: Hoare triple {29886#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (< main_~x~0 (+ main_~y~0 1)) (not (<= 50 main_~x~0)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [260] L28-2-->L27-2_primed: Formula: (let ((.cse2 (= v_main_~x~0_2125 v_main_~x~0_2124)) (.cse0 (<= 50 v_main_~x~0_2125)) (.cse3 (= v_main_~y~0_1673 v_main_~y~0_1672))) (or (let ((.cse1 (+ v_main_~x~0_2125 v_main_~y~0_1672))) (and (< v_main_~y~0_1673 v_main_~y~0_1672) .cse0 (< .cse1 (+ 101 v_main_~y~0_1673)) (= .cse1 (+ v_main_~x~0_2124 v_main_~y~0_1673)))) (and .cse2 .cse3) (and .cse2 (or (not (< v_main_~x~0_2125 100)) (not .cse0)) .cse3))) InVars {main_~x~0=v_main_~x~0_2125, main_~y~0=v_main_~y~0_1673} OutVars{main_~x~0=v_main_~x~0_2124, main_~y~0=v_main_~y~0_1672} AuxVars[] AssignedVars[main_~x~0, main_~y~0] {29882#(or (< main_~x~0 100) (and (< 99 main_~y~0) (<= main_~y~0 100)))} is VALID [2022-04-15 06:21:31,109 INFO L290 TraceCheckUtils]: 7: Hoare triple {29886#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (< main_~x~0 (+ main_~y~0 1)) (not (<= 50 main_~x~0)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [259] L27-2_primed-->L28-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {29886#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (< main_~x~0 (+ main_~y~0 1)) (not (<= 50 main_~x~0)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:21:31,110 INFO L290 TraceCheckUtils]: 6: Hoare triple {29893#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= 50 main_~y~0) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} [258] L28-2-->L27-2_primed: Formula: (let ((.cse0 (= v_main_~x~0_2123 v_main_~x~0_2122))) (or .cse0 (and (< v_main_~x~0_2123 v_main_~x~0_2122) (< v_main_~x~0_2122 51)) (and .cse0 (<= 50 v_main_~x~0_2123)))) InVars {main_~x~0=v_main_~x~0_2123} OutVars{main_~x~0=v_main_~x~0_2122} AuxVars[] AssignedVars[main_~x~0] {29886#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (or (< main_~x~0 100) (<= main_~y~0 100)) (or (< main_~x~0 (+ main_~y~0 1)) (not (<= 50 main_~x~0)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:21:31,110 INFO L290 TraceCheckUtils]: 5: Hoare triple {29811#true} ~x~0 := 0;~y~0 := 50; {29893#(and (or (< main_~x~0 100) (< 99 main_~y~0)) (<= 50 main_~y~0) (<= main_~y~0 100) (or (<= 50 main_~x~0) (<= main_~y~0 50)) (or (< main_~x~0 (+ main_~y~0 1)) (<= 99 main_~y~0)) (or (not (<= 50 main_~x~0)) (<= main_~y~0 main_~x~0)))} is VALID [2022-04-15 06:21:31,110 INFO L272 TraceCheckUtils]: 4: Hoare triple {29811#true} call #t~ret1 := main(); {29811#true} is VALID [2022-04-15 06:21:31,110 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {29811#true} {29811#true} #56#return; {29811#true} is VALID [2022-04-15 06:21:31,110 INFO L290 TraceCheckUtils]: 2: Hoare triple {29811#true} assume true; {29811#true} is VALID [2022-04-15 06:21:31,110 INFO L290 TraceCheckUtils]: 1: Hoare triple {29811#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {29811#true} is VALID [2022-04-15 06:21:31,111 INFO L272 TraceCheckUtils]: 0: Hoare triple {29811#true} call ULTIMATE.init(); {29811#true} is VALID [2022-04-15 06:21:31,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 06:21:31,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932977305] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 06:21:31,111 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-15 06:21:31,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-04-15 06:21:33,619 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:21:33,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [276252362] [2022-04-15 06:21:33,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [276252362] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:21:33,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:21:33,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-04-15 06:21:33,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988374703] [2022-04-15 06:21:33,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:21:33,620 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 1.9473684210526316) internal successors, (111), 56 states have internal predecessors, (111), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2022-04-15 06:21:33,620 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:21:33,620 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 58 states, 57 states have (on average 1.9473684210526316) internal successors, (111), 56 states have internal predecessors, (111), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:21:33,704 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 115 edges. 115 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:21:33,705 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-04-15 06:21:33,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:21:33,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-04-15 06:21:33,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=4252, Unknown=0, NotChecked=0, Total=4692 [2022-04-15 06:21:33,705 INFO L87 Difference]: Start difference. First operand 117 states and 120 transitions. Second operand has 58 states, 57 states have (on average 1.9473684210526316) internal successors, (111), 56 states have internal predecessors, (111), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:21:43,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:21:43,621 INFO L93 Difference]: Finished difference Result 118 states and 121 transitions. [2022-04-15 06:21:43,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-04-15 06:21:43,621 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 1.9473684210526316) internal successors, (111), 56 states have internal predecessors, (111), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2022-04-15 06:21:43,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:21:43,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.9473684210526316) internal successors, (111), 56 states have internal predecessors, (111), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:21:43,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 118 transitions. [2022-04-15 06:21:43,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.9473684210526316) internal successors, (111), 56 states have internal predecessors, (111), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:21:43,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 118 transitions. [2022-04-15 06:21:43,624 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 55 states and 118 transitions. [2022-04-15 06:21:43,758 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 118 edges. 118 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:21:43,758 INFO L225 Difference]: With dead ends: 118 [2022-04-15 06:21:43,758 INFO L226 Difference]: Without dead ends: 0 [2022-04-15 06:21:43,760 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 72 SyntacticMatches, 4 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2709 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=915, Invalid=13605, Unknown=0, NotChecked=0, Total=14520 [2022-04-15 06:21:43,760 INFO L913 BasicCegarLoop]: 6 mSDtfsCounter, 51 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 5613 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 5667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 5613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-04-15 06:21:43,760 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 278 Invalid, 5667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 5613 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-04-15 06:21:43,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-15 06:21:43,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-15 06:21:43,761 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:21:43,761 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-15 06:21:43,761 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-15 06:21:43,761 INFO L87 Difference]: Start difference. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-15 06:21:43,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:21:43,761 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-15 06:21:43,761 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-15 06:21:43,761 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:21:43,762 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:21:43,762 INFO L74 IsIncluded]: Start isIncluded. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-15 06:21:43,762 INFO L87 Difference]: Start difference. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-15 06:21:43,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:21:43,762 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-15 06:21:43,762 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-15 06:21:43,762 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:21:43,762 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:21:43,762 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:21:43,762 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:21:43,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-15 06:21:43,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-15 06:21:43,762 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 115 [2022-04-15 06:21:43,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:21:43,762 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-15 06:21:43,763 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 1.9473684210526316) internal successors, (111), 56 states have internal predecessors, (111), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:21:43,763 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2022-04-15 06:21:43,763 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 06:21:43,763 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-15 06:21:43,763 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:21:43,765 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-15 06:21:43,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-04-15 06:21:43,983 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-04-15 06:21:43,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-15 06:21:45,382 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2022-04-15 06:21:45,382 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2022-04-15 06:21:45,382 INFO L882 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2022-04-15 06:21:45,382 INFO L882 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2022-04-15 06:21:45,382 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2022-04-15 06:21:45,382 INFO L882 garLoopResultBuilder]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2022-04-15 06:21:45,382 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2022-04-15 06:21:45,382 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 24 37) the Hoare annotation is: true [2022-04-15 06:21:45,383 INFO L878 garLoopResultBuilder]: At program point L28(lines 28 33) the Hoare annotation is: (let ((.cse0 (<= 50 main_~y~0)) (.cse1 (<= main_~y~0 50))) (or (and (<= main_~y~0 69) (<= 69 main_~y~0) (< main_~x~0 70) (<= 69 main_~x~0)) (and (= main_~x~0 0) .cse0 .cse1) (and (< main_~x~0 76) (<= 75 main_~y~0) (<= 75 main_~x~0) (<= main_~y~0 75)) (and (<= 80 main_~x~0) (<= main_~y~0 80) (< main_~x~0 81) (<= 80 main_~y~0)) (and (< main_~x~0 89) (<= main_~y~0 88) (<= 88 main_~y~0) (<= 88 main_~x~0)) (and (< main_~x~0 85) (<= 84 main_~x~0) (<= main_~y~0 84) (<= 84 main_~y~0)) (and (<= 77 main_~y~0) (< main_~x~0 78) (<= main_~y~0 77) (<= 77 main_~x~0)) (and (<= 63 main_~x~0) (<= 63 main_~y~0) (< main_~x~0 64) (<= main_~y~0 63)) (and (<= 66 main_~y~0) (<= main_~y~0 66) (<= 66 main_~x~0) (< main_~x~0 67)) (and (< main_~x~0 97) (<= 96 main_~y~0) (<= 96 main_~x~0) (<= main_~y~0 96)) (and (<= 74 main_~x~0) (<= 74 main_~y~0) (<= main_~y~0 74) (< main_~x~0 75)) (and (< main_~x~0 77) (<= 76 main_~x~0) (<= main_~y~0 76) (<= 76 main_~y~0)) (and (< main_~x~0 94) (<= 93 main_~y~0) (<= main_~y~0 93) (<= 93 main_~x~0)) (and (<= main_~y~0 57) (<= 57 main_~x~0) (<= 57 main_~y~0) (< main_~x~0 58)) (and (<= 78 main_~y~0) (<= 78 main_~x~0) (< main_~x~0 79) (<= main_~y~0 78)) (and (<= 92 main_~y~0) (<= 92 main_~x~0) (<= main_~y~0 92) (< main_~x~0 93)) (and (< main_~x~0 57) (<= main_~y~0 56) (<= 56 main_~x~0) (<= 56 main_~y~0)) (and .cse0 (or (= main_~x~0 1) (< 1 main_~x~0)) (< main_~x~0 51) .cse1) (and (< main_~x~0 61) (<= 60 main_~y~0) (<= main_~y~0 60) (<= 60 main_~x~0)) (and (<= 90 main_~y~0) (<= main_~y~0 90) (<= 90 main_~x~0) (< main_~x~0 91)) (and (<= 70 main_~x~0) (<= 70 main_~y~0) (<= main_~y~0 70) (< main_~x~0 71)) (and (<= main_~y~0 68) (<= 68 main_~y~0) (<= 68 main_~x~0) (< main_~x~0 69)) (and (<= 81 main_~x~0) (<= main_~y~0 81) (< main_~x~0 82) (<= 81 main_~y~0)) (and (<= 65 main_~y~0) (<= main_~y~0 65) (<= 65 main_~x~0) (< main_~x~0 66)) (and (<= 97 main_~y~0) (< main_~x~0 98) (<= 97 main_~x~0) (<= main_~y~0 97)) (and (<= main_~y~0 61) (<= 61 main_~x~0) (<= 61 main_~y~0) (< main_~x~0 62)) (and (<= main_~y~0 85) (<= 85 main_~x~0) (<= 85 main_~y~0) (< main_~x~0 86)) (and (<= 86 main_~y~0) (< main_~x~0 87) (<= 86 main_~x~0) (<= main_~y~0 86)) (and (<= 51 main_~y~0) (<= 51 main_~x~0) (< main_~x~0 52) (<= main_~y~0 51)) (and (<= main_~y~0 53) (<= 53 main_~x~0) (<= 53 main_~y~0) (< main_~x~0 54)) (and (<= main_~y~0 72) (< main_~x~0 73) (<= 72 main_~x~0) (<= 72 main_~y~0)) (and (<= 91 main_~y~0) (<= main_~y~0 91) (<= 91 main_~x~0) (< main_~x~0 92)) (and (<= 62 main_~x~0) (< main_~x~0 63) (<= main_~y~0 62) (<= 62 main_~y~0)) (and (<= main_~y~0 52) (<= 52 main_~x~0) (<= 52 main_~y~0) (< main_~x~0 53)) (and (<= main_~y~0 71) (<= 71 main_~y~0) (< main_~x~0 72) (<= 71 main_~x~0)) (and (< main_~x~0 55) (<= 54 main_~y~0) (<= 54 main_~x~0) (<= main_~y~0 54)) (and (<= 79 main_~x~0) (< main_~x~0 80) (<= main_~y~0 79) (<= 79 main_~y~0)) (and (< main_~x~0 100) (<= 99 main_~x~0) (<= main_~y~0 99) (<= 99 main_~y~0)) (and (<= main_~y~0 73) (<= 73 main_~x~0) (< main_~x~0 74) (<= 73 main_~y~0)) (and (<= 82 main_~x~0) (<= 82 main_~y~0) (<= main_~y~0 82) (< main_~x~0 83)) (and (<= main_~y~0 94) (<= 94 main_~x~0) (<= 94 main_~y~0) (< main_~x~0 95)) (and (< main_~x~0 99) (<= 98 main_~y~0) (<= 98 main_~x~0) (<= main_~y~0 98)) (and (<= 83 main_~x~0) (< main_~x~0 84) (<= 83 main_~y~0) (<= main_~y~0 83)) (and (<= main_~y~0 59) (<= 59 main_~x~0) (<= 59 main_~y~0) (< main_~x~0 60)) (and (< main_~x~0 88) (<= main_~y~0 87) (<= 87 main_~x~0) (<= 87 main_~y~0)) (and (<= main_~y~0 67) (<= 67 main_~x~0) (<= 67 main_~y~0) (< main_~x~0 68)) (and (< main_~x~0 56) (<= 55 main_~y~0) (<= main_~y~0 55) (<= 55 main_~x~0)) (and (<= 95 main_~x~0) (< main_~x~0 96) (<= 95 main_~y~0) (<= main_~y~0 95)) (and (<= 58 main_~x~0) (<= 58 main_~y~0) (<= main_~y~0 58) (< main_~x~0 59)) (and (<= 64 main_~y~0) (<= main_~y~0 64) (< main_~x~0 65) (<= 64 main_~x~0)) (and (<= main_~y~0 89) (<= 89 main_~y~0) (<= 89 main_~x~0) (< main_~x~0 90)))) [2022-04-15 06:21:45,383 INFO L878 garLoopResultBuilder]: At program point L28-2(lines 27 34) the Hoare annotation is: (let ((.cse0 (<= 50 main_~y~0)) (.cse1 (<= main_~y~0 50))) (or (and (<= main_~y~0 69) (<= 69 main_~y~0) (< main_~x~0 70) (<= 69 main_~x~0)) (and (= main_~x~0 0) .cse0 .cse1) (and (< main_~x~0 76) (<= 75 main_~y~0) (<= 75 main_~x~0) (<= main_~y~0 75)) (and (<= 80 main_~x~0) (<= main_~y~0 80) (< main_~x~0 81) (<= 80 main_~y~0)) (and (< main_~x~0 89) (<= main_~y~0 88) (<= 88 main_~y~0) (<= 88 main_~x~0)) (and (< main_~x~0 85) (<= 84 main_~x~0) (<= main_~y~0 84) (<= 84 main_~y~0)) (and (<= 77 main_~y~0) (< main_~x~0 78) (<= main_~y~0 77) (<= 77 main_~x~0)) (and (<= 63 main_~x~0) (<= 63 main_~y~0) (< main_~x~0 64) (<= main_~y~0 63)) (and (<= 66 main_~y~0) (<= main_~y~0 66) (<= 66 main_~x~0) (< main_~x~0 67)) (and (< main_~x~0 97) (<= 96 main_~y~0) (<= 96 main_~x~0) (<= main_~y~0 96)) (and (<= 74 main_~x~0) (<= 74 main_~y~0) (<= main_~y~0 74) (< main_~x~0 75)) (and (< main_~x~0 77) (<= 76 main_~x~0) (<= main_~y~0 76) (<= 76 main_~y~0)) (and (< main_~x~0 94) (<= 93 main_~y~0) (<= main_~y~0 93) (<= 93 main_~x~0)) (and (<= main_~y~0 57) (<= 57 main_~x~0) (<= 57 main_~y~0) (< main_~x~0 58)) (and (<= 78 main_~y~0) (<= 78 main_~x~0) (< main_~x~0 79) (<= main_~y~0 78)) (and (<= 92 main_~y~0) (<= 92 main_~x~0) (<= main_~y~0 92) (< main_~x~0 93)) (and (< main_~x~0 57) (<= main_~y~0 56) (<= 56 main_~x~0) (<= 56 main_~y~0)) (and .cse0 (or (= main_~x~0 1) (< 1 main_~x~0)) (< main_~x~0 51) .cse1) (and (< main_~x~0 61) (<= 60 main_~y~0) (<= main_~y~0 60) (<= 60 main_~x~0)) (and (<= 90 main_~y~0) (<= main_~y~0 90) (<= 90 main_~x~0) (< main_~x~0 91)) (and (<= 70 main_~x~0) (<= 70 main_~y~0) (<= main_~y~0 70) (< main_~x~0 71)) (and (<= main_~y~0 68) (<= 68 main_~y~0) (<= 68 main_~x~0) (< main_~x~0 69)) (and (<= 81 main_~x~0) (<= main_~y~0 81) (< main_~x~0 82) (<= 81 main_~y~0)) (and (<= 65 main_~y~0) (<= main_~y~0 65) (<= 65 main_~x~0) (< main_~x~0 66)) (and (<= 97 main_~y~0) (< main_~x~0 98) (<= 97 main_~x~0) (<= main_~y~0 97)) (and (<= main_~y~0 61) (<= 61 main_~x~0) (<= 61 main_~y~0) (< main_~x~0 62)) (and (<= main_~y~0 85) (<= 85 main_~x~0) (<= 85 main_~y~0) (< main_~x~0 86)) (and (<= 86 main_~y~0) (< main_~x~0 87) (<= 86 main_~x~0) (<= main_~y~0 86)) (and (<= 51 main_~y~0) (<= 51 main_~x~0) (< main_~x~0 52) (<= main_~y~0 51)) (and (<= main_~y~0 53) (<= 53 main_~x~0) (<= 53 main_~y~0) (< main_~x~0 54)) (and (<= main_~y~0 72) (< main_~x~0 73) (<= 72 main_~x~0) (<= 72 main_~y~0)) (and (<= 91 main_~y~0) (<= main_~y~0 91) (<= 91 main_~x~0) (< main_~x~0 92)) (and (<= 62 main_~x~0) (< main_~x~0 63) (<= main_~y~0 62) (<= 62 main_~y~0)) (and (<= main_~y~0 52) (<= 52 main_~x~0) (<= 52 main_~y~0) (< main_~x~0 53)) (and (<= main_~y~0 71) (<= 71 main_~y~0) (< main_~x~0 72) (<= 71 main_~x~0)) (and (<= 100 main_~x~0) (<= 100 main_~y~0) (< main_~x~0 101) (<= main_~y~0 100)) (and (< main_~x~0 55) (<= 54 main_~y~0) (<= 54 main_~x~0) (<= main_~y~0 54)) (and (<= 79 main_~x~0) (< main_~x~0 80) (<= main_~y~0 79) (<= 79 main_~y~0)) (and (< main_~x~0 100) (<= 99 main_~x~0) (<= main_~y~0 99) (<= 99 main_~y~0)) (and (<= main_~y~0 73) (<= 73 main_~x~0) (< main_~x~0 74) (<= 73 main_~y~0)) (and (<= 82 main_~x~0) (<= 82 main_~y~0) (<= main_~y~0 82) (< main_~x~0 83)) (and (<= main_~y~0 94) (<= 94 main_~x~0) (<= 94 main_~y~0) (< main_~x~0 95)) (and (< main_~x~0 99) (<= 98 main_~y~0) (<= 98 main_~x~0) (<= main_~y~0 98)) (and (<= 83 main_~x~0) (< main_~x~0 84) (<= 83 main_~y~0) (<= main_~y~0 83)) (and (<= main_~y~0 59) (<= 59 main_~x~0) (<= 59 main_~y~0) (< main_~x~0 60)) (and (< main_~x~0 88) (<= main_~y~0 87) (<= 87 main_~x~0) (<= 87 main_~y~0)) (and (<= main_~y~0 67) (<= 67 main_~x~0) (<= 67 main_~y~0) (< main_~x~0 68)) (and (< main_~x~0 56) (<= 55 main_~y~0) (<= main_~y~0 55) (<= 55 main_~x~0)) (and (<= 95 main_~x~0) (< main_~x~0 96) (<= 95 main_~y~0) (<= main_~y~0 95)) (and (<= 58 main_~x~0) (<= 58 main_~y~0) (<= main_~y~0 58) (< main_~x~0 59)) (and (<= 64 main_~y~0) (<= main_~y~0 64) (< main_~x~0 65) (<= 64 main_~x~0)) (and (<= main_~y~0 89) (<= 89 main_~y~0) (<= 89 main_~x~0) (< main_~x~0 90)))) [2022-04-15 06:21:45,383 INFO L878 garLoopResultBuilder]: At program point L27-2(lines 27 34) the Hoare annotation is: (and (< 99 main_~y~0) (<= main_~y~0 100)) [2022-04-15 06:21:45,383 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 24 37) the Hoare annotation is: true [2022-04-15 06:21:45,383 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 24 37) the Hoare annotation is: true [2022-04-15 06:21:45,383 INFO L885 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: true [2022-04-15 06:21:45,383 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-15 06:21:45,383 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-15 06:21:45,384 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-15 06:21:45,384 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-15 06:21:45,384 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-15 06:21:45,384 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-15 06:21:45,384 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-15 06:21:45,384 INFO L885 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2022-04-15 06:21:45,384 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2022-04-15 06:21:45,384 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: true [2022-04-15 06:21:45,384 INFO L878 garLoopResultBuilder]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-04-15 06:21:45,384 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-04-15 06:21:45,384 INFO L878 garLoopResultBuilder]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-04-15 06:21:45,386 INFO L719 BasicCegarLoop]: Path program histogram: [50, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:21:45,387 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-15 06:21:45,389 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-15 06:21:45,389 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-15 06:21:45,396 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2022-04-15 06:21:45,399 WARN L170 areAnnotationChecker]: L12-1 has no Hoare annotation [2022-04-15 06:21:45,399 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2022-04-15 06:21:45,399 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2022-04-15 06:21:45,558 WARN L170 areAnnotationChecker]: L15-2 has no Hoare annotation [2022-04-15 06:21:45,674 INFO L163 areAnnotationChecker]: CFG has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-15 06:21:45,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.04 06:21:45 BoogieIcfgContainer [2022-04-15 06:21:45,712 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-15 06:21:45,713 INFO L158 Benchmark]: Toolchain (without parser) took 525800.18ms. Allocated memory was 177.2MB in the beginning and 212.9MB in the end (delta: 35.7MB). Free memory was 124.1MB in the beginning and 170.1MB in the end (delta: -46.0MB). Peak memory consumption was 103.4MB. Max. memory is 8.0GB. [2022-04-15 06:21:45,713 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 177.2MB. Free memory was 141.2MB in the beginning and 141.1MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-15 06:21:45,713 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.70ms. Allocated memory is still 177.2MB. Free memory was 123.9MB in the beginning and 151.8MB in the end (delta: -28.0MB). Peak memory consumption was 11.3MB. Max. memory is 8.0GB. [2022-04-15 06:21:45,713 INFO L158 Benchmark]: Boogie Preprocessor took 25.37ms. Allocated memory is still 177.2MB. Free memory was 151.6MB in the beginning and 150.2MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-15 06:21:45,714 INFO L158 Benchmark]: RCFGBuilder took 263.43ms. Allocated memory is still 177.2MB. Free memory was 150.2MB in the beginning and 139.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-15 06:21:45,714 INFO L158 Benchmark]: TraceAbstraction took 525257.40ms. Allocated memory was 177.2MB in the beginning and 212.9MB in the end (delta: 35.7MB). Free memory was 138.7MB in the beginning and 170.1MB in the end (delta: -31.4MB). Peak memory consumption was 118.4MB. Max. memory is 8.0GB. [2022-04-15 06:21:45,715 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 177.2MB. Free memory was 141.2MB in the beginning and 141.1MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 247.70ms. Allocated memory is still 177.2MB. Free memory was 123.9MB in the beginning and 151.8MB in the end (delta: -28.0MB). Peak memory consumption was 11.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.37ms. Allocated memory is still 177.2MB. Free memory was 151.6MB in the beginning and 150.2MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 263.43ms. Allocated memory is still 177.2MB. Free memory was 150.2MB in the beginning and 139.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 525257.40ms. Allocated memory was 177.2MB in the beginning and 212.9MB in the end (delta: 35.7MB). Free memory was 138.7MB in the beginning and 170.1MB in the end (delta: -31.4MB). Peak memory consumption was 118.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 524.8s, OverallIterations: 53, TraceHistogramMax: 52, PathProgramHistogramMax: 50, EmptinessCheckTime: 0.0s, AutomataDifference: 234.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1807 SdHoareTripleChecker+Valid, 98.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1806 mSDsluCounter, 8221 SdHoareTripleChecker+Invalid, 98.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7632 mSDsCounter, 1636 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 113649 IncrementalHoareTripleChecker+Invalid, 115285 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1636 mSolverCounterUnsat, 589 mSDtfsCounter, 113649 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6005 GetRequests, 2290 SyntacticMatches, 204 SemanticMatches, 3511 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60767 ImplicationChecksByTransitivity, 91.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=52, InterpolantAutomatonStates: 1540, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.3s AutomataMinimizationTime, 53 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 20 LocationsWithAnnotation, 338 PreInvPairs, 553 NumberOfFragments, 1384 HoareAnnotationTreeSize, 338 FomulaSimplifications, 29 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 20 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((((((((((((((((((((((y <= 69 && 69 <= y) && x < 70) && 69 <= x) || ((x == 0 && 50 <= y) && y <= 50)) || (((x < 76 && 75 <= y) && 75 <= x) && y <= 75)) || (((80 <= x && y <= 80) && x < 81) && 80 <= y)) || (((x < 89 && y <= 88) && 88 <= y) && 88 <= x)) || (((x < 85 && 84 <= x) && y <= 84) && 84 <= y)) || (((77 <= y && x < 78) && y <= 77) && 77 <= x)) || (((63 <= x && 63 <= y) && x < 64) && y <= 63)) || (((66 <= y && y <= 66) && 66 <= x) && x < 67)) || (((x < 97 && 96 <= y) && 96 <= x) && y <= 96)) || (((74 <= x && 74 <= y) && y <= 74) && x < 75)) || (((x < 77 && 76 <= x) && y <= 76) && 76 <= y)) || (((x < 94 && 93 <= y) && y <= 93) && 93 <= x)) || (((y <= 57 && 57 <= x) && 57 <= y) && x < 58)) || (((78 <= y && 78 <= x) && x < 79) && y <= 78)) || (((92 <= y && 92 <= x) && y <= 92) && x < 93)) || (((x < 57 && y <= 56) && 56 <= x) && 56 <= y)) || (((50 <= y && (x == 1 || 1 < x)) && x < 51) && y <= 50)) || (((x < 61 && 60 <= y) && y <= 60) && 60 <= x)) || (((90 <= y && y <= 90) && 90 <= x) && x < 91)) || (((70 <= x && 70 <= y) && y <= 70) && x < 71)) || (((y <= 68 && 68 <= y) && 68 <= x) && x < 69)) || (((81 <= x && y <= 81) && x < 82) && 81 <= y)) || (((65 <= y && y <= 65) && 65 <= x) && x < 66)) || (((97 <= y && x < 98) && 97 <= x) && y <= 97)) || (((y <= 61 && 61 <= x) && 61 <= y) && x < 62)) || (((y <= 85 && 85 <= x) && 85 <= y) && x < 86)) || (((86 <= y && x < 87) && 86 <= x) && y <= 86)) || (((51 <= y && 51 <= x) && x < 52) && y <= 51)) || (((y <= 53 && 53 <= x) && 53 <= y) && x < 54)) || (((y <= 72 && x < 73) && 72 <= x) && 72 <= y)) || (((91 <= y && y <= 91) && 91 <= x) && x < 92)) || (((62 <= x && x < 63) && y <= 62) && 62 <= y)) || (((y <= 52 && 52 <= x) && 52 <= y) && x < 53)) || (((y <= 71 && 71 <= y) && x < 72) && 71 <= x)) || (((100 <= x && 100 <= y) && x < 101) && y <= 100)) || (((x < 55 && 54 <= y) && 54 <= x) && y <= 54)) || (((79 <= x && x < 80) && y <= 79) && 79 <= y)) || (((x < 100 && 99 <= x) && y <= 99) && 99 <= y)) || (((y <= 73 && 73 <= x) && x < 74) && 73 <= y)) || (((82 <= x && 82 <= y) && y <= 82) && x < 83)) || (((y <= 94 && 94 <= x) && 94 <= y) && x < 95)) || (((x < 99 && 98 <= y) && 98 <= x) && y <= 98)) || (((83 <= x && x < 84) && 83 <= y) && y <= 83)) || (((y <= 59 && 59 <= x) && 59 <= y) && x < 60)) || (((x < 88 && y <= 87) && 87 <= x) && 87 <= y)) || (((y <= 67 && 67 <= x) && 67 <= y) && x < 68)) || (((x < 56 && 55 <= y) && y <= 55) && 55 <= x)) || (((95 <= x && x < 96) && 95 <= y) && y <= 95)) || (((58 <= x && 58 <= y) && y <= 58) && x < 59)) || (((64 <= y && y <= 64) && x < 65) && 64 <= x)) || (((y <= 89 && 89 <= y) && 89 <= x) && x < 90) - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 RESULT: Ultimate proved your program to be correct! [2022-04-15 06:21:45,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...