/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/loops-crafted-1/mono-crafted_12.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-e106359-m [2022-04-15 06:47:48,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-15 06:47:48,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-15 06:47:48,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-15 06:47:48,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-15 06:47:48,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-15 06:47:48,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-15 06:47:48,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-15 06:47:48,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-15 06:47:48,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-15 06:47:48,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-15 06:47:48,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-15 06:47:48,086 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-15 06:47:48,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-15 06:47:48,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-15 06:47:48,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-15 06:47:48,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-15 06:47:48,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-15 06:47:48,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-15 06:47:48,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-15 06:47:48,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-15 06:47:48,105 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 06:47:48,116 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-15 06:47:48,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-15 06:47:48,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-15 06:47:48,117 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-15 06:47:48,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-15 06:47:48,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-15 06:47:48,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-15 06:47:48,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-15 06:47:48,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-15 06:47:48,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-15 06:47:48,119 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-15 06:47:48,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-15 06:47:48,119 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-15 06:47:48,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-15 06:47:48,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-15 06:47:48,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-15 06:47:48,120 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-15 06:47:48,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-15 06:47:48,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 06:47:48,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-15 06:47:48,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-15 06:47:48,120 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-15 06:47:48,121 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-15 06:47:48,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-15 06:47:48,121 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-15 06:47:48,121 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-15 06:47:48,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-15 06:47:48,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-15 06:47:48,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-15 06:47:48,388 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-15 06:47:48,389 INFO L275 PluginConnector]: CDTParser initialized [2022-04-15 06:47:48,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_12.c [2022-04-15 06:47:48,441 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40018d62c/b158fc2f773c47a3a324815d61605da9/FLAGcc732db92 [2022-04-15 06:47:48,808 INFO L306 CDTParser]: Found 1 translation units. [2022-04-15 06:47:48,809 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_12.c [2022-04-15 06:47:48,814 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40018d62c/b158fc2f773c47a3a324815d61605da9/FLAGcc732db92 [2022-04-15 06:47:49,227 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40018d62c/b158fc2f773c47a3a324815d61605da9 [2022-04-15 06:47:49,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-15 06:47:49,231 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-15 06:47:49,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-15 06:47:49,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-15 06:47:49,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-15 06:47:49,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 06:47:49" (1/1) ... [2022-04-15 06:47:49,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b69746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 06:47:49, skipping insertion in model container [2022-04-15 06:47:49,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 06:47:49" (1/1) ... [2022-04-15 06:47:49,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-15 06:47:49,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-15 06:47:49,416 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_12.c[319,332] [2022-04-15 06:47:49,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 06:47:49,453 INFO L203 MainTranslator]: Completed pre-run [2022-04-15 06:47:49,465 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_12.c[319,332] [2022-04-15 06:47:49,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 06:47:49,486 INFO L208 MainTranslator]: Completed translation [2022-04-15 06:47:49,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 06:47:49 WrapperNode [2022-04-15 06:47:49,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-15 06:47:49,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-15 06:47:49,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-15 06:47:49,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-15 06:47:49,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 06:47:49" (1/1) ... [2022-04-15 06:47:49,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 06:47:49" (1/1) ... [2022-04-15 06:47:49,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 06:47:49" (1/1) ... [2022-04-15 06:47:49,502 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 06:47:49" (1/1) ... [2022-04-15 06:47:49,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 06:47:49" (1/1) ... [2022-04-15 06:47:49,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 06:47:49" (1/1) ... [2022-04-15 06:47:49,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 06:47:49" (1/1) ... [2022-04-15 06:47:49,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-15 06:47:49,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-15 06:47:49,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-15 06:47:49,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-15 06:47:49,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 06:47:49" (1/1) ... [2022-04-15 06:47:49,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 06:47:49,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 06:47:49,546 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 06:47:49,548 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 06:47:49,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-15 06:47:49,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-15 06:47:49,582 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-15 06:47:49,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-15 06:47:49,582 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-15 06:47:49,582 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-15 06:47:49,582 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-15 06:47:49,583 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-15 06:47:49,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-15 06:47:49,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-15 06:47:49,583 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-15 06:47:49,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-15 06:47:49,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-15 06:47:49,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-15 06:47:49,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-15 06:47:49,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-15 06:47:49,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-15 06:47:49,635 INFO L234 CfgBuilder]: Building ICFG [2022-04-15 06:47:49,636 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-15 06:47:49,791 INFO L275 CfgBuilder]: Performing block encoding [2022-04-15 06:47:49,797 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-15 06:47:49,797 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-15 06:47:49,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 06:47:49 BoogieIcfgContainer [2022-04-15 06:47:49,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-15 06:47:49,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-15 06:47:49,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-15 06:47:49,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-15 06:47:49,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.04 06:47:49" (1/3) ... [2022-04-15 06:47:49,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4836b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 06:47:49, skipping insertion in model container [2022-04-15 06:47:49,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 06:47:49" (2/3) ... [2022-04-15 06:47:49,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4836b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 06:47:49, skipping insertion in model container [2022-04-15 06:47:49,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 06:47:49" (3/3) ... [2022-04-15 06:47:49,805 INFO L111 eAbstractionObserver]: Analyzing ICFG mono-crafted_12.c [2022-04-15 06:47:49,809 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-15 06:47:49,809 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-15 06:47:49,841 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-15 06:47:49,846 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 06:47:49,846 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-15 06:47:49,859 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 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 06:47:49,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-15 06:47:49,865 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:47:49,865 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:47:49,865 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:47:49,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:47:49,870 INFO L85 PathProgramCache]: Analyzing trace with hash -2135496849, now seen corresponding path program 1 times [2022-04-15 06:47:49,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:47:49,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [298885069] [2022-04-15 06:47:49,884 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 06:47:49,885 INFO L85 PathProgramCache]: Analyzing trace with hash -2135496849, now seen corresponding path program 2 times [2022-04-15 06:47:49,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:47:49,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248318230] [2022-04-15 06:47:49,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:47:49,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:47:49,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:47:50,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:47:50,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:47:50,057 INFO L290 TraceCheckUtils]: 0: Hoare triple {29#(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(18, 2);call #Ultimate.allocInit(12, 3); {24#true} is VALID [2022-04-15 06:47:50,057 INFO L290 TraceCheckUtils]: 1: Hoare triple {24#true} assume true; {24#true} is VALID [2022-04-15 06:47:50,058 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {24#true} {24#true} #42#return; {24#true} is VALID [2022-04-15 06:47:50,060 INFO L272 TraceCheckUtils]: 0: Hoare triple {24#true} call ULTIMATE.init(); {29#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:47:50,061 INFO L290 TraceCheckUtils]: 1: Hoare triple {29#(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(18, 2);call #Ultimate.allocInit(12, 3); {24#true} is VALID [2022-04-15 06:47:50,061 INFO L290 TraceCheckUtils]: 2: Hoare triple {24#true} assume true; {24#true} is VALID [2022-04-15 06:47:50,061 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {24#true} {24#true} #42#return; {24#true} is VALID [2022-04-15 06:47:50,061 INFO L272 TraceCheckUtils]: 4: Hoare triple {24#true} call #t~ret5 := main(); {24#true} is VALID [2022-04-15 06:47:50,061 INFO L290 TraceCheckUtils]: 5: Hoare triple {24#true} ~x~0 := 0;~y~0 := 10000000;~z~0 := 0; {24#true} is VALID [2022-04-15 06:47:50,064 INFO L290 TraceCheckUtils]: 6: Hoare triple {24#true} assume !true; {25#false} is VALID [2022-04-15 06:47:50,065 INFO L272 TraceCheckUtils]: 7: Hoare triple {25#false} call __VERIFIER_assert((if 0 == (if ~z~0 % 4294967296 < 0 && 0 != ~z~0 % 4294967296 % 2 then ~z~0 % 4294967296 % 2 - 2 else ~z~0 % 4294967296 % 2) % 4294967296 then 1 else 0)); {25#false} is VALID [2022-04-15 06:47:50,065 INFO L290 TraceCheckUtils]: 8: Hoare triple {25#false} ~cond := #in~cond; {25#false} is VALID [2022-04-15 06:47:50,065 INFO L290 TraceCheckUtils]: 9: Hoare triple {25#false} assume 0 == ~cond; {25#false} is VALID [2022-04-15 06:47:50,065 INFO L290 TraceCheckUtils]: 10: Hoare triple {25#false} assume !false; {25#false} is VALID [2022-04-15 06:47:50,066 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 06:47:50,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:47:50,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248318230] [2022-04-15 06:47:50,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248318230] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:47:50,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:47:50,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-15 06:47:50,069 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:47:50,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [298885069] [2022-04-15 06:47:50,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [298885069] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:47:50,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:47:50,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-15 06:47:50,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837350825] [2022-04-15 06:47:50,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:47:50,079 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 06:47:50,080 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:47:50,083 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 06:47:50,123 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 06:47:50,124 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-15 06:47:50,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:47:50,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-15 06:47:50,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-15 06:47:50,144 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 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 06:47:50,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:47:50,251 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2022-04-15 06:47:50,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-15 06:47:50,252 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 06:47:50,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:47:50,253 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 06:47:50,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2022-04-15 06:47:50,266 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 06:47:50,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2022-04-15 06:47:50,272 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 37 transitions. [2022-04-15 06:47:50,325 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 06:47:50,332 INFO L225 Difference]: With dead ends: 33 [2022-04-15 06:47:50,333 INFO L226 Difference]: Without dead ends: 14 [2022-04-15 06:47:50,335 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 06:47:50,341 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 24 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 06:47:50,343 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 24 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 06:47:50,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-04-15 06:47:50,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-04-15 06:47:50,374 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:47:50,375 INFO L82 GeneralOperation]: Start isEquivalent. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:47:50,375 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:47:50,376 INFO L87 Difference]: Start difference. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:47:50,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:47:50,383 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-04-15 06:47:50,383 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-04-15 06:47:50,383 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:47:50,383 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:47:50,384 INFO L74 IsIncluded]: Start isIncluded. First operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 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 14 states. [2022-04-15 06:47:50,385 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 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 14 states. [2022-04-15 06:47:50,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:47:50,388 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-04-15 06:47:50,388 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-04-15 06:47:50,389 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:47:50,389 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:47:50,389 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:47:50,389 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:47:50,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:47:50,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-04-15 06:47:50,392 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2022-04-15 06:47:50,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:47:50,392 INFO L478 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-04-15 06:47:50,393 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 06:47:50,393 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 14 states and 15 transitions. [2022-04-15 06:47:50,417 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 06:47:50,418 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-04-15 06:47:50,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-15 06:47:50,421 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:47:50,422 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:47:50,422 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-15 06:47:50,422 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:47:50,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:47:50,424 INFO L85 PathProgramCache]: Analyzing trace with hash -2145655580, now seen corresponding path program 1 times [2022-04-15 06:47:50,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:47:50,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1212586090] [2022-04-15 06:47:50,428 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 06:47:50,428 INFO L85 PathProgramCache]: Analyzing trace with hash -2145655580, now seen corresponding path program 2 times [2022-04-15 06:47:50,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:47:50,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224157105] [2022-04-15 06:47:50,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:47:50,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:47:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:47:50,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:47:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:47:50,575 INFO L290 TraceCheckUtils]: 0: Hoare triple {162#(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(18, 2);call #Ultimate.allocInit(12, 3); {154#true} is VALID [2022-04-15 06:47:50,575 INFO L290 TraceCheckUtils]: 1: Hoare triple {154#true} assume true; {154#true} is VALID [2022-04-15 06:47:50,575 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {154#true} {154#true} #42#return; {154#true} is VALID [2022-04-15 06:47:50,577 INFO L272 TraceCheckUtils]: 0: Hoare triple {154#true} call ULTIMATE.init(); {162#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:47:50,577 INFO L290 TraceCheckUtils]: 1: Hoare triple {162#(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(18, 2);call #Ultimate.allocInit(12, 3); {154#true} is VALID [2022-04-15 06:47:50,577 INFO L290 TraceCheckUtils]: 2: Hoare triple {154#true} assume true; {154#true} is VALID [2022-04-15 06:47:50,577 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {154#true} {154#true} #42#return; {154#true} is VALID [2022-04-15 06:47:50,578 INFO L272 TraceCheckUtils]: 4: Hoare triple {154#true} call #t~ret5 := main(); {154#true} is VALID [2022-04-15 06:47:50,579 INFO L290 TraceCheckUtils]: 5: Hoare triple {154#true} ~x~0 := 0;~y~0 := 10000000;~z~0 := 0; {159#(= main_~z~0 0)} is VALID [2022-04-15 06:47:50,580 INFO L290 TraceCheckUtils]: 6: Hoare triple {159#(= main_~z~0 0)} assume !(~x~0 % 4294967296 < ~y~0 % 4294967296); {159#(= main_~z~0 0)} is VALID [2022-04-15 06:47:50,591 INFO L272 TraceCheckUtils]: 7: Hoare triple {159#(= main_~z~0 0)} call __VERIFIER_assert((if 0 == (if ~z~0 % 4294967296 < 0 && 0 != ~z~0 % 4294967296 % 2 then ~z~0 % 4294967296 % 2 - 2 else ~z~0 % 4294967296 % 2) % 4294967296 then 1 else 0)); {160#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:47:50,596 INFO L290 TraceCheckUtils]: 8: Hoare triple {160#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {161#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:47:50,597 INFO L290 TraceCheckUtils]: 9: Hoare triple {161#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {155#false} is VALID [2022-04-15 06:47:50,597 INFO L290 TraceCheckUtils]: 10: Hoare triple {155#false} assume !false; {155#false} is VALID [2022-04-15 06:47:50,597 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 06:47:50,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:47:50,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224157105] [2022-04-15 06:47:50,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224157105] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:47:50,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:47:50,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-15 06:47:50,599 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:47:50,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1212586090] [2022-04-15 06:47:50,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1212586090] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:47:50,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:47:50,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-15 06:47:50,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278367502] [2022-04-15 06:47:50,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:47:50,600 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 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 06:47:50,601 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:47:50,601 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 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 06:47:50,613 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 06:47:50,614 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-15 06:47:50,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:47:50,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-15 06:47:50,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-15 06:47:50,615 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 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 06:47:50,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:47:50,761 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-04-15 06:47:50,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-15 06:47:50,761 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 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 06:47:50,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:47:50,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 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 06:47:50,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 24 transitions. [2022-04-15 06:47:50,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 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 06:47:50,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 24 transitions. [2022-04-15 06:47:50,765 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 24 transitions. [2022-04-15 06:47:50,791 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 06:47:50,792 INFO L225 Difference]: With dead ends: 22 [2022-04-15 06:47:50,792 INFO L226 Difference]: Without dead ends: 17 [2022-04-15 06:47:50,792 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-04-15 06:47:50,794 INFO L913 BasicCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 06:47:50,794 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 31 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 06:47:50,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-04-15 06:47:50,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-04-15 06:47:50,798 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:47:50,799 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 06:47:50,799 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 06:47:50,799 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 06:47:50,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:47:50,801 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-04-15 06:47:50,801 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-15 06:47:50,801 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:47:50,801 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:47:50,801 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 06:47:50,802 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 06:47:50,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:47:50,803 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-04-15 06:47:50,803 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-15 06:47:50,803 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:47:50,803 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:47:50,804 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:47:50,804 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:47:50,804 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 06:47:50,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-04-15 06:47:50,805 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2022-04-15 06:47:50,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:47:50,805 INFO L478 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-04-15 06:47:50,806 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 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 06:47:50,806 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 17 states and 19 transitions. [2022-04-15 06:47:50,826 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 06:47:50,826 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-15 06:47:50,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-15 06:47:50,826 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 06:47:50,827 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 06:47:50,827 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-15 06:47:50,827 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 06:47:50,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 06:47:50,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1854346422, now seen corresponding path program 1 times [2022-04-15 06:47:50,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 06:47:50,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1283925035] [2022-04-15 06:47:54,056 WARN L970 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-15 06:47:57,389 WARN L977 rdanLoopAcceleration]: Unable to prove correctness of quantifier elimination. [2022-04-15 06:47:57,949 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-15 06:47:57,951 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 06:47:57,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1115131409, now seen corresponding path program 1 times [2022-04-15 06:47:57,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 06:47:57,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944518293] [2022-04-15 06:47:57,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 06:47:57,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 06:47:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:47:58,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 06:47:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 06:47:58,056 INFO L290 TraceCheckUtils]: 0: Hoare triple {292#(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(18, 2);call #Ultimate.allocInit(12, 3); {283#true} is VALID [2022-04-15 06:47:58,057 INFO L290 TraceCheckUtils]: 1: Hoare triple {283#true} assume true; {283#true} is VALID [2022-04-15 06:47:58,057 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {283#true} {283#true} #42#return; {283#true} is VALID [2022-04-15 06:47:58,058 INFO L272 TraceCheckUtils]: 0: Hoare triple {283#true} call ULTIMATE.init(); {292#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 06:47:58,059 INFO L290 TraceCheckUtils]: 1: Hoare triple {292#(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(18, 2);call #Ultimate.allocInit(12, 3); {283#true} is VALID [2022-04-15 06:47:58,059 INFO L290 TraceCheckUtils]: 2: Hoare triple {283#true} assume true; {283#true} is VALID [2022-04-15 06:47:58,059 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {283#true} {283#true} #42#return; {283#true} is VALID [2022-04-15 06:47:58,059 INFO L272 TraceCheckUtils]: 4: Hoare triple {283#true} call #t~ret5 := main(); {283#true} is VALID [2022-04-15 06:47:58,061 INFO L290 TraceCheckUtils]: 5: Hoare triple {283#true} ~x~0 := 0;~y~0 := 10000000;~z~0 := 0; {288#(and (= main_~z~0 0) (= main_~x~0 0))} is VALID [2022-04-15 06:47:58,064 INFO L290 TraceCheckUtils]: 6: Hoare triple {288#(and (= main_~z~0 0) (= main_~x~0 0))} [48] L10-2-->L10-3_primed: Formula: (let ((.cse6 (mod v_main_~x~0_9 4294967296)) (.cse1 (mod v_main_~y~0_4 4294967296))) (let ((.cse3 (= v_main_~x~0_9 v_main_~x~0_8)) (.cse4 (= v_main_~z~0_7 v_main_~z~0_6)) (.cse2 (< .cse6 .cse1)) (.cse0 (<= 5000000 .cse6)) (.cse5 (= |v_main_#t~post4_4| |v_main_#t~post4_3|))) (or (and (= (+ v_main_~z~0_6 (* v_main_~x~0_9 2)) (+ v_main_~z~0_7 (* v_main_~x~0_8 2))) (< v_main_~x~0_9 v_main_~x~0_8) .cse0 (<= (div (+ (* (- 1) v_main_~x~0_8) .cse1) (- 4294967296)) (+ (div (+ v_main_~x~0_9 (- 4294967295)) 4294967296) 1)) .cse2) (and .cse3 .cse4 .cse5 (= v_main_~y~0_4 v_main_~y~0_4)) (and .cse3 .cse4 (or (not .cse2) (not .cse0)) .cse5)))) InVars {main_#t~post4=|v_main_#t~post4_4|, main_~y~0=v_main_~y~0_4, main_~x~0=v_main_~x~0_9, main_~z~0=v_main_~z~0_7} OutVars{main_#t~post4=|v_main_#t~post4_3|, main_~y~0=v_main_~y~0_4, main_~x~0=v_main_~x~0_8, main_~z~0=v_main_~z~0_6} AuxVars[] AssignedVars[main_~x~0, main_~z~0, main_#t~post4] {289#(and (<= main_~z~0 (* 2 (div main_~z~0 2))) (not (<= (+ (div main_~z~0 2) 1) 0)))} is VALID [2022-04-15 06:47:58,064 INFO L290 TraceCheckUtils]: 7: Hoare triple {289#(and (<= main_~z~0 (* 2 (div main_~z~0 2))) (not (<= (+ (div main_~z~0 2) 1) 0)))} [47] L10-3_primed-->L10-3: Formula: (not (< (mod v_main_~x~0_7 4294967296) (mod v_main_~y~0_3 4294967296))) InVars {main_~x~0=v_main_~x~0_7, main_~y~0=v_main_~y~0_3} OutVars{main_~x~0=v_main_~x~0_7, main_~y~0=v_main_~y~0_3} AuxVars[] AssignedVars[] {289#(and (<= main_~z~0 (* 2 (div main_~z~0 2))) (not (<= (+ (div main_~z~0 2) 1) 0)))} is VALID [2022-04-15 06:47:58,069 INFO L272 TraceCheckUtils]: 8: Hoare triple {289#(and (<= main_~z~0 (* 2 (div main_~z~0 2))) (not (<= (+ (div main_~z~0 2) 1) 0)))} call __VERIFIER_assert((if 0 == (if ~z~0 % 4294967296 < 0 && 0 != ~z~0 % 4294967296 % 2 then ~z~0 % 4294967296 % 2 - 2 else ~z~0 % 4294967296 % 2) % 4294967296 then 1 else 0)); {290#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 06:47:58,070 INFO L290 TraceCheckUtils]: 9: Hoare triple {290#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {291#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 06:47:58,070 INFO L290 TraceCheckUtils]: 10: Hoare triple {291#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {284#false} is VALID [2022-04-15 06:47:58,070 INFO L290 TraceCheckUtils]: 11: Hoare triple {284#false} assume !false; {284#false} is VALID [2022-04-15 06:47:58,071 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 06:47:58,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 06:47:58,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944518293] [2022-04-15 06:47:58,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944518293] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:47:58,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:47:58,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-15 06:47:58,108 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 06:47:58,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1283925035] [2022-04-15 06:47:58,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1283925035] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 06:47:58,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 06:47:58,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-15 06:47:58,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959521616] [2022-04-15 06:47:58,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 06:47:58,109 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 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 14 [2022-04-15 06:47:58,110 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 06:47:58,110 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:47:58,122 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 06:47:58,122 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-15 06:47:58,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 06:47:58,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-15 06:47:58,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-04-15 06:47:58,124 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:47:58,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:47:58,278 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2022-04-15 06:47:58,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-15 06:47:58,279 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 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 14 [2022-04-15 06:47:58,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 06:47:58,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:47:58,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 27 transitions. [2022-04-15 06:47:58,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:47:58,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 27 transitions. [2022-04-15 06:47:58,282 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 27 transitions. [2022-04-15 06:47:58,308 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 06:47:58,308 INFO L225 Difference]: With dead ends: 26 [2022-04-15 06:47:58,308 INFO L226 Difference]: Without dead ends: 0 [2022-04-15 06:47:58,308 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-04-15 06:47:58,309 INFO L913 BasicCegarLoop]: 8 mSDtfsCounter, 18 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 06:47:58,310 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 25 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 06:47:58,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-15 06:47:58,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-15 06:47:58,311 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 06:47:58,311 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 06:47:58,311 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 06:47:58,311 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 06:47:58,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:47:58,311 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-15 06:47:58,311 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-15 06:47:58,311 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:47:58,312 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:47:58,312 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 06:47:58,312 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 06:47:58,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 06:47:58,312 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-15 06:47:58,312 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-15 06:47:58,312 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:47:58,312 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 06:47:58,312 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 06:47:58,312 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 06:47:58,313 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 06:47:58,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-15 06:47:58,313 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-04-15 06:47:58,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 06:47:58,313 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-15 06:47:58,313 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 06:47:58,313 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2022-04-15 06:47:58,313 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 06:47:58,314 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-15 06:47:58,314 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 06:47:58,316 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-15 06:47:58,319 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-15 06:47:58,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-15 06:47:58,443 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2022-04-15 06:47:58,444 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2022-04-15 06:47:58,444 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2022-04-15 06:47:58,444 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-15 06:47:58,444 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 06:47:58,444 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-15 06:47:58,444 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-15 06:47:58,444 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-15 06:47:58,445 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-15 06:47:58,445 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-15 06:47:58,445 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 6 17) the Hoare annotation is: true [2022-04-15 06:47:58,445 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 6 17) the Hoare annotation is: true [2022-04-15 06:47:58,445 INFO L885 garLoopResultBuilder]: At program point L15(line 15) the Hoare annotation is: true [2022-04-15 06:47:58,445 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 6 17) the Hoare annotation is: true [2022-04-15 06:47:58,445 INFO L878 garLoopResultBuilder]: At program point L11(lines 11 12) the Hoare annotation is: (let ((.cse0 (div main_~z~0 2))) (and (<= main_~z~0 (* 2 .cse0)) (not (<= (+ .cse0 1) 0)))) [2022-04-15 06:47:58,446 INFO L878 garLoopResultBuilder]: At program point L11-2(lines 11 12) the Hoare annotation is: (let ((.cse0 (div main_~z~0 2))) (and (<= main_~z~0 (* 2 .cse0)) (not (<= (+ .cse0 1) 0)))) [2022-04-15 06:47:58,446 INFO L878 garLoopResultBuilder]: At program point L10-2(lines 10 14) the Hoare annotation is: (let ((.cse0 (div main_~z~0 2))) (and (<= main_~z~0 (* 2 .cse0)) (not (<= (+ .cse0 1) 0)))) [2022-04-15 06:47:58,446 INFO L878 garLoopResultBuilder]: At program point L10-3(lines 10 14) the Hoare annotation is: (let ((.cse0 (div main_~z~0 2))) (and (<= main_~z~0 (* 2 .cse0)) (not (<= (+ .cse0 1) 0)))) [2022-04-15 06:47:58,446 INFO L885 garLoopResultBuilder]: At program point L4-3(line 4) the Hoare annotation is: true [2022-04-15 06:47:58,446 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(line 4) the Hoare annotation is: true [2022-04-15 06:47:58,446 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(line 4) the Hoare annotation is: true [2022-04-15 06:47:58,446 INFO L878 garLoopResultBuilder]: At program point L4(line 4) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-04-15 06:47:58,446 INFO L878 garLoopResultBuilder]: At program point L4-1(line 4) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-04-15 06:47:58,447 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-04-15 06:47:58,449 INFO L719 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2022-04-15 06:47:58,450 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-15 06:47:58,453 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-15 06:47:58,457 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-15 06:47:58,465 INFO L163 areAnnotationChecker]: CFG has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-15 06:47:58,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.04 06:47:58 BoogieIcfgContainer [2022-04-15 06:47:58,472 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-15 06:47:58,473 INFO L158 Benchmark]: Toolchain (without parser) took 9241.74ms. Allocated memory was 188.7MB in the beginning and 257.9MB in the end (delta: 69.2MB). Free memory was 139.1MB in the beginning and 132.9MB in the end (delta: 6.2MB). Peak memory consumption was 74.6MB. Max. memory is 8.0GB. [2022-04-15 06:47:58,473 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory is still 155.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-15 06:47:58,474 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.04ms. Allocated memory is still 188.7MB. Free memory was 138.9MB in the beginning and 165.6MB in the end (delta: -26.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-04-15 06:47:58,474 INFO L158 Benchmark]: Boogie Preprocessor took 32.97ms. Allocated memory is still 188.7MB. Free memory was 165.6MB in the beginning and 164.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-15 06:47:58,474 INFO L158 Benchmark]: RCFGBuilder took 276.44ms. Allocated memory is still 188.7MB. Free memory was 164.2MB in the beginning and 154.0MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-15 06:47:58,475 INFO L158 Benchmark]: TraceAbstraction took 8672.06ms. Allocated memory was 188.7MB in the beginning and 257.9MB in the end (delta: 69.2MB). Free memory was 153.4MB in the beginning and 132.9MB in the end (delta: 20.5MB). Peak memory consumption was 89.4MB. Max. memory is 8.0GB. [2022-04-15 06:47:58,476 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 188.7MB. Free memory is still 155.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 254.04ms. Allocated memory is still 188.7MB. Free memory was 138.9MB in the beginning and 165.6MB in the end (delta: -26.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.97ms. Allocated memory is still 188.7MB. Free memory was 165.6MB in the beginning and 164.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 276.44ms. Allocated memory is still 188.7MB. Free memory was 164.2MB in the beginning and 154.0MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 8672.06ms. Allocated memory was 188.7MB in the beginning and 257.9MB in the end (delta: 69.2MB). Free memory was 153.4MB in the beginning and 132.9MB in the end (delta: 20.5MB). Peak memory consumption was 89.4MB. 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: 4]: 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 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 49 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 48 mSDsluCounter, 80 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 63 IncrementalHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 43 mSDtfsCounter, 63 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 39 PreInvPairs, 61 NumberOfFragments, 98 HoareAnnotationTreeSize, 39 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 21 FomulaSimplificationsInter, 111 FormulaSimplificationTreeSizeReductionInter, 0.1s 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: 10]: Loop Invariant Derived loop invariant: z <= 2 * (z / 2) && !(z / 2 + 1 <= 0) - ProcedureContractResult [Line: 6]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 4]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 RESULT: Ultimate proved your program to be correct! [2022-04-15 06:47:58,495 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...