/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/nla-digbench-scaling/mannadiv_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-08 07:23:03,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-08 07:23:03,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-08 07:23:03,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-08 07:23:03,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-08 07:23:03,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-08 07:23:03,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-08 07:23:03,556 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-08 07:23:03,563 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-08 07:23:03,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-08 07:23:03,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-08 07:23:03,564 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-08 07:23:03,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-08 07:23:03,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-08 07:23:03,565 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-08 07:23:03,565 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-08 07:23:03,565 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-08 07:23:03,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-08 07:23:03,565 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-08 07:23:03,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-08 07:23:03,565 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-08 07:23:03,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-08 07:23:03,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-08 07:23:03,566 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-08 07:23:03,566 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-08 07:23:03,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-08 07:23:03,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 07:23:03,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-08 07:23:03,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-08 07:23:03,566 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-08 07:23:03,566 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-08 07:23:03,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-08 07:23:03,567 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-08 07:23:03,567 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-08 07:23:03,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-08 07:23:03,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-08 07:23:03,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-08 07:23:03,799 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-08 07:23:03,800 INFO L275 PluginConnector]: CDTParser initialized [2022-04-08 07:23:03,801 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound2.c [2022-04-08 07:23:03,852 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b97c6652/3f0e32c33ddc429b95cc97743f22ad16/FLAG5215c5308 [2022-04-08 07:23:04,221 INFO L306 CDTParser]: Found 1 translation units. [2022-04-08 07:23:04,221 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound2.c [2022-04-08 07:23:04,230 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b97c6652/3f0e32c33ddc429b95cc97743f22ad16/FLAG5215c5308 [2022-04-08 07:23:04,637 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b97c6652/3f0e32c33ddc429b95cc97743f22ad16 [2022-04-08 07:23:04,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-08 07:23:04,642 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-08 07:23:04,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-08 07:23:04,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-08 07:23:04,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-08 07:23:04,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 07:23:04" (1/1) ... [2022-04-08 07:23:04,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@100a70b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 07:23:04, skipping insertion in model container [2022-04-08 07:23:04,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 07:23:04" (1/1) ... [2022-04-08 07:23:04,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-08 07:23:04,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-08 07:23:04,805 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound2.c[573,586] [2022-04-08 07:23:04,828 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 07:23:04,846 INFO L203 MainTranslator]: Completed pre-run [2022-04-08 07:23:04,856 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound2.c[573,586] [2022-04-08 07:23:04,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 07:23:04,885 INFO L208 MainTranslator]: Completed translation [2022-04-08 07:23:04,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 07:23:04 WrapperNode [2022-04-08 07:23:04,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-08 07:23:04,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-08 07:23:04,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-08 07:23:04,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-08 07:23:04,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 07:23:04" (1/1) ... [2022-04-08 07:23:04,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 07:23:04" (1/1) ... [2022-04-08 07:23:04,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 07:23:04" (1/1) ... [2022-04-08 07:23:04,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 07:23:04" (1/1) ... [2022-04-08 07:23:04,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 07:23:04" (1/1) ... [2022-04-08 07:23:04,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 07:23:04" (1/1) ... [2022-04-08 07:23:04,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 07:23:04" (1/1) ... [2022-04-08 07:23:04,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-08 07:23:04,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-08 07:23:04,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-08 07:23:04,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-08 07:23:04,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 07:23:04" (1/1) ... [2022-04-08 07:23:04,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 07:23:04,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 07:23:04,944 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) [2022-04-08 07:23:04,946 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 [2022-04-08 07:23:04,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-08 07:23:04,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-08 07:23:04,970 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-08 07:23:04,970 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-08 07:23:04,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-08 07:23:04,970 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-08 07:23:04,970 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-08 07:23:04,971 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-08 07:23:04,971 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-08 07:23:04,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-08 07:23:04,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-08 07:23:04,971 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-08 07:23:04,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-08 07:23:04,971 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-08 07:23:04,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-08 07:23:04,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-08 07:23:04,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-08 07:23:04,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-08 07:23:04,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-08 07:23:04,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-08 07:23:05,016 INFO L234 CfgBuilder]: Building ICFG [2022-04-08 07:23:05,017 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-08 07:23:05,119 INFO L275 CfgBuilder]: Performing block encoding [2022-04-08 07:23:05,125 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-08 07:23:05,125 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-08 07:23:05,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 07:23:05 BoogieIcfgContainer [2022-04-08 07:23:05,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-08 07:23:05,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-08 07:23:05,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-08 07:23:05,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-08 07:23:05,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.04 07:23:04" (1/3) ... [2022-04-08 07:23:05,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301fbd0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 07:23:05, skipping insertion in model container [2022-04-08 07:23:05,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 07:23:04" (2/3) ... [2022-04-08 07:23:05,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301fbd0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 07:23:05, skipping insertion in model container [2022-04-08 07:23:05,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 07:23:05" (3/3) ... [2022-04-08 07:23:05,132 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound2.c [2022-04-08 07:23:05,136 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-08 07:23:05,136 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-08 07:23:05,169 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-08 07:23:05,174 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 [2022-04-08 07:23:05,175 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-08 07:23:05,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 07:23:05,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-08 07:23:05,196 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 07:23:05,197 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 07:23:05,197 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 07:23:05,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 07:23:05,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1859024204, now seen corresponding path program 1 times [2022-04-08 07:23:05,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 07:23:05,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1581779840] [2022-04-08 07:23:05,217 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 07:23:05,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1859024204, now seen corresponding path program 2 times [2022-04-08 07:23:05,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 07:23:05,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511706201] [2022-04-08 07:23:05,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 07:23:05,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 07:23:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 07:23:05,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 07:23:05,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 07:23:05,430 INFO L290 TraceCheckUtils]: 0: Hoare triple {46#(and (= ~counter~0 |old(~counter~0)|) (= |#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(11, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {33#true} is VALID [2022-04-08 07:23:05,430 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#true} assume true; {33#true} is VALID [2022-04-08 07:23:05,430 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {33#true} {33#true} #67#return; {33#true} is VALID [2022-04-08 07:23:05,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-08 07:23:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 07:23:05,453 INFO L290 TraceCheckUtils]: 0: Hoare triple {33#true} ~cond := #in~cond; {33#true} is VALID [2022-04-08 07:23:05,453 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#true} assume 0 == ~cond;assume false; {34#false} is VALID [2022-04-08 07:23:05,454 INFO L290 TraceCheckUtils]: 2: Hoare triple {34#false} assume true; {34#false} is VALID [2022-04-08 07:23:05,454 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {34#false} {33#true} #59#return; {34#false} is VALID [2022-04-08 07:23:05,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-08 07:23:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 07:23:05,475 INFO L290 TraceCheckUtils]: 0: Hoare triple {33#true} ~cond := #in~cond; {33#true} is VALID [2022-04-08 07:23:05,476 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#true} assume 0 == ~cond;assume false; {34#false} is VALID [2022-04-08 07:23:05,476 INFO L290 TraceCheckUtils]: 2: Hoare triple {34#false} assume true; {34#false} is VALID [2022-04-08 07:23:05,477 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {34#false} {34#false} #61#return; {34#false} is VALID [2022-04-08 07:23:05,478 INFO L272 TraceCheckUtils]: 0: Hoare triple {33#true} call ULTIMATE.init(); {46#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 07:23:05,478 INFO L290 TraceCheckUtils]: 1: Hoare triple {46#(and (= ~counter~0 |old(~counter~0)|) (= |#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(11, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {33#true} is VALID [2022-04-08 07:23:05,478 INFO L290 TraceCheckUtils]: 2: Hoare triple {33#true} assume true; {33#true} is VALID [2022-04-08 07:23:05,479 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {33#true} {33#true} #67#return; {33#true} is VALID [2022-04-08 07:23:05,479 INFO L272 TraceCheckUtils]: 4: Hoare triple {33#true} call #t~ret7 := main(); {33#true} is VALID [2022-04-08 07:23:05,479 INFO L290 TraceCheckUtils]: 5: Hoare triple {33#true} havoc ~x1~0;havoc ~x2~0;havoc ~y1~0;havoc ~y2~0;havoc ~y3~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~x1~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~x2~0 := #t~nondet5;havoc #t~nondet5; {33#true} is VALID [2022-04-08 07:23:05,480 INFO L272 TraceCheckUtils]: 6: Hoare triple {33#true} call assume_abort_if_not((if ~x1~0 >= 0 then 1 else 0)); {33#true} is VALID [2022-04-08 07:23:05,480 INFO L290 TraceCheckUtils]: 7: Hoare triple {33#true} ~cond := #in~cond; {33#true} is VALID [2022-04-08 07:23:05,480 INFO L290 TraceCheckUtils]: 8: Hoare triple {33#true} assume 0 == ~cond;assume false; {34#false} is VALID [2022-04-08 07:23:05,481 INFO L290 TraceCheckUtils]: 9: Hoare triple {34#false} assume true; {34#false} is VALID [2022-04-08 07:23:05,481 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {34#false} {33#true} #59#return; {34#false} is VALID [2022-04-08 07:23:05,481 INFO L272 TraceCheckUtils]: 11: Hoare triple {34#false} call assume_abort_if_not((if 0 != ~x2~0 then 1 else 0)); {33#true} is VALID [2022-04-08 07:23:05,481 INFO L290 TraceCheckUtils]: 12: Hoare triple {33#true} ~cond := #in~cond; {33#true} is VALID [2022-04-08 07:23:05,482 INFO L290 TraceCheckUtils]: 13: Hoare triple {33#true} assume 0 == ~cond;assume false; {34#false} is VALID [2022-04-08 07:23:05,482 INFO L290 TraceCheckUtils]: 14: Hoare triple {34#false} assume true; {34#false} is VALID [2022-04-08 07:23:05,482 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {34#false} {34#false} #61#return; {34#false} is VALID [2022-04-08 07:23:05,483 INFO L290 TraceCheckUtils]: 16: Hoare triple {34#false} ~y1~0 := 0;~y2~0 := 0;~y3~0 := ~x1~0; {34#false} is VALID [2022-04-08 07:23:05,483 INFO L290 TraceCheckUtils]: 17: Hoare triple {34#false} assume !true; {34#false} is VALID [2022-04-08 07:23:05,483 INFO L272 TraceCheckUtils]: 18: Hoare triple {34#false} call __VERIFIER_assert((if ~y1~0 * ~x2~0 + ~y2~0 == ~x1~0 then 1 else 0)); {34#false} is VALID [2022-04-08 07:23:05,483 INFO L290 TraceCheckUtils]: 19: Hoare triple {34#false} ~cond := #in~cond; {34#false} is VALID [2022-04-08 07:23:05,483 INFO L290 TraceCheckUtils]: 20: Hoare triple {34#false} assume 0 == ~cond; {34#false} is VALID [2022-04-08 07:23:05,484 INFO L290 TraceCheckUtils]: 21: Hoare triple {34#false} assume !false; {34#false} is VALID [2022-04-08 07:23:05,484 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-08 07:23:05,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 07:23:05,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511706201] [2022-04-08 07:23:05,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511706201] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 07:23:05,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 07:23:05,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 07:23:05,488 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 07:23:05,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1581779840] [2022-04-08 07:23:05,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1581779840] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 07:23:05,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 07:23:05,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 07:23:05,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573457999] [2022-04-08 07:23:05,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 07:23:05,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-04-08 07:23:05,514 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 07:23:05,517 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 07:23:05,557 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 07:23:05,558 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-08 07:23:05,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 07:23:05,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-08 07:23:05,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 07:23:05,588 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 07:23:05,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 07:23:05,786 INFO L93 Difference]: Finished difference Result 54 states and 72 transitions. [2022-04-08 07:23:05,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-08 07:23:05,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-04-08 07:23:05,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 07:23:05,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 07:23:05,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2022-04-08 07:23:05,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 07:23:05,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2022-04-08 07:23:05,804 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 72 transitions. [2022-04-08 07:23:05,881 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 72 edges. 72 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 07:23:05,889 INFO L225 Difference]: With dead ends: 54 [2022-04-08 07:23:05,889 INFO L226 Difference]: Without dead ends: 26 [2022-04-08 07:23:05,892 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 07:23:05,897 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 07:23:05,898 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 35 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 07:23:05,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-04-08 07:23:05,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-04-08 07:23:05,936 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 07:23:05,937 INFO L82 GeneralOperation]: Start isEquivalent. First operand 26 states. Second operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 07:23:05,938 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 07:23:05,938 INFO L87 Difference]: Start difference. First operand 26 states. Second operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 07:23:05,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 07:23:05,943 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2022-04-08 07:23:05,943 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-04-08 07:23:05,944 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 07:23:05,944 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 07:23:05,944 INFO L74 IsIncluded]: Start isIncluded. First operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 26 states. [2022-04-08 07:23:05,945 INFO L87 Difference]: Start difference. First operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 26 states. [2022-04-08 07:23:05,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 07:23:05,961 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2022-04-08 07:23:05,961 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-04-08 07:23:05,962 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 07:23:05,962 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 07:23:05,962 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 07:23:05,963 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 07:23:05,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 07:23:05,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-04-08 07:23:05,973 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 22 [2022-04-08 07:23:05,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 07:23:05,973 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-04-08 07:23:05,974 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 07:23:05,974 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 25 states and 29 transitions. [2022-04-08 07:23:06,014 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 29 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 07:23:06,015 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-04-08 07:23:06,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-08 07:23:06,016 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 07:23:06,016 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 07:23:06,016 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-08 07:23:06,017 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 07:23:06,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 07:23:06,019 INFO L85 PathProgramCache]: Analyzing trace with hash 243739414, now seen corresponding path program 1 times [2022-04-08 07:23:06,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 07:23:06,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1038446488] [2022-04-08 07:23:06,026 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 07:23:06,027 INFO L85 PathProgramCache]: Analyzing trace with hash 243739414, now seen corresponding path program 2 times [2022-04-08 07:23:06,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 07:23:06,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586170182] [2022-04-08 07:23:06,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 07:23:06,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 07:23:06,074 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 07:23:06,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [240067424] [2022-04-08 07:23:06,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 07:23:06,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 07:23:06,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 07:23:06,077 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) [2022-04-08 07:23:06,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-08 07:23:06,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-08 07:23:06,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 07:23:06,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-08 07:23:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 07:23:06,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 07:23:06,359 INFO L272 TraceCheckUtils]: 0: Hoare triple {259#true} call ULTIMATE.init(); {259#true} is VALID [2022-04-08 07:23:06,360 INFO L290 TraceCheckUtils]: 1: Hoare triple {259#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(11, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {267#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:06,361 INFO L290 TraceCheckUtils]: 2: Hoare triple {267#(<= ~counter~0 0)} assume true; {267#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:06,362 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {267#(<= ~counter~0 0)} {259#true} #67#return; {267#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:06,363 INFO L272 TraceCheckUtils]: 4: Hoare triple {267#(<= ~counter~0 0)} call #t~ret7 := main(); {267#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:06,364 INFO L290 TraceCheckUtils]: 5: Hoare triple {267#(<= ~counter~0 0)} havoc ~x1~0;havoc ~x2~0;havoc ~y1~0;havoc ~y2~0;havoc ~y3~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~x1~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~x2~0 := #t~nondet5;havoc #t~nondet5; {267#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:06,365 INFO L272 TraceCheckUtils]: 6: Hoare triple {267#(<= ~counter~0 0)} call assume_abort_if_not((if ~x1~0 >= 0 then 1 else 0)); {267#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:06,366 INFO L290 TraceCheckUtils]: 7: Hoare triple {267#(<= ~counter~0 0)} ~cond := #in~cond; {267#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:06,367 INFO L290 TraceCheckUtils]: 8: Hoare triple {267#(<= ~counter~0 0)} assume !(0 == ~cond); {267#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:06,367 INFO L290 TraceCheckUtils]: 9: Hoare triple {267#(<= ~counter~0 0)} assume true; {267#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:06,368 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {267#(<= ~counter~0 0)} {267#(<= ~counter~0 0)} #59#return; {267#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:06,369 INFO L272 TraceCheckUtils]: 11: Hoare triple {267#(<= ~counter~0 0)} call assume_abort_if_not((if 0 != ~x2~0 then 1 else 0)); {267#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:06,369 INFO L290 TraceCheckUtils]: 12: Hoare triple {267#(<= ~counter~0 0)} ~cond := #in~cond; {267#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:06,370 INFO L290 TraceCheckUtils]: 13: Hoare triple {267#(<= ~counter~0 0)} assume !(0 == ~cond); {267#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:06,372 INFO L290 TraceCheckUtils]: 14: Hoare triple {267#(<= ~counter~0 0)} assume true; {267#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:06,376 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {267#(<= ~counter~0 0)} {267#(<= ~counter~0 0)} #61#return; {267#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:06,377 INFO L290 TraceCheckUtils]: 16: Hoare triple {267#(<= ~counter~0 0)} ~y1~0 := 0;~y2~0 := 0;~y3~0 := ~x1~0; {267#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:06,378 INFO L290 TraceCheckUtils]: 17: Hoare triple {267#(<= ~counter~0 0)} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {316#(<= |main_#t~post6| 0)} is VALID [2022-04-08 07:23:06,379 INFO L290 TraceCheckUtils]: 18: Hoare triple {316#(<= |main_#t~post6| 0)} assume !(#t~post6 < 2);havoc #t~post6; {260#false} is VALID [2022-04-08 07:23:06,381 INFO L272 TraceCheckUtils]: 19: Hoare triple {260#false} call __VERIFIER_assert((if ~y1~0 * ~x2~0 + ~y2~0 == ~x1~0 then 1 else 0)); {260#false} is VALID [2022-04-08 07:23:06,381 INFO L290 TraceCheckUtils]: 20: Hoare triple {260#false} ~cond := #in~cond; {260#false} is VALID [2022-04-08 07:23:06,381 INFO L290 TraceCheckUtils]: 21: Hoare triple {260#false} assume 0 == ~cond; {260#false} is VALID [2022-04-08 07:23:06,382 INFO L290 TraceCheckUtils]: 22: Hoare triple {260#false} assume !false; {260#false} is VALID [2022-04-08 07:23:06,382 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-08 07:23:06,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-08 07:23:06,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 07:23:06,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586170182] [2022-04-08 07:23:06,383 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 07:23:06,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240067424] [2022-04-08 07:23:06,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240067424] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 07:23:06,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 07:23:06,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-08 07:23:06,385 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 07:23:06,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1038446488] [2022-04-08 07:23:06,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1038446488] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 07:23:06,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 07:23:06,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-08 07:23:06,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958318788] [2022-04-08 07:23:06,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 07:23:06,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-04-08 07:23:06,387 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 07:23:06,387 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 07:23:06,406 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 07:23:06,407 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-08 07:23:06,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 07:23:06,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-08 07:23:06,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-08 07:23:06,409 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 07:23:06,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 07:23:06,482 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-04-08 07:23:06,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-08 07:23:06,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-04-08 07:23:06,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 07:23:06,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 07:23:06,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2022-04-08 07:23:06,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 07:23:06,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2022-04-08 07:23:06,490 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 38 transitions. [2022-04-08 07:23:06,523 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 07:23:06,524 INFO L225 Difference]: With dead ends: 34 [2022-04-08 07:23:06,524 INFO L226 Difference]: Without dead ends: 27 [2022-04-08 07:23:06,525 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-08 07:23:06,526 INFO L913 BasicCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 07:23:06,526 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 07:23:06,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-04-08 07:23:06,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-04-08 07:23:06,547 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 07:23:06,547 INFO L82 GeneralOperation]: Start isEquivalent. First operand 27 states. Second operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 07:23:06,548 INFO L74 IsIncluded]: Start isIncluded. First operand 27 states. Second operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 07:23:06,548 INFO L87 Difference]: Start difference. First operand 27 states. Second operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 07:23:06,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 07:23:06,550 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-04-08 07:23:06,550 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-04-08 07:23:06,551 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 07:23:06,551 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 07:23:06,551 INFO L74 IsIncluded]: Start isIncluded. First operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 27 states. [2022-04-08 07:23:06,552 INFO L87 Difference]: Start difference. First operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 27 states. [2022-04-08 07:23:06,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 07:23:06,554 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-04-08 07:23:06,554 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-04-08 07:23:06,555 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 07:23:06,555 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 07:23:06,555 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 07:23:06,555 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 07:23:06,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 07:23:06,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-04-08 07:23:06,557 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 23 [2022-04-08 07:23:06,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 07:23:06,558 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-04-08 07:23:06,558 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-08 07:23:06,558 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 27 states and 31 transitions. [2022-04-08 07:23:06,589 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 07:23:06,589 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-04-08 07:23:06,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-08 07:23:06,590 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 07:23:06,590 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 07:23:06,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-08 07:23:06,799 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 07:23:06,800 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 07:23:06,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 07:23:06,800 INFO L85 PathProgramCache]: Analyzing trace with hash 245526874, now seen corresponding path program 1 times [2022-04-08 07:23:06,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 07:23:06,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [81455538] [2022-04-08 07:23:06,801 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 07:23:06,801 INFO L85 PathProgramCache]: Analyzing trace with hash 245526874, now seen corresponding path program 2 times [2022-04-08 07:23:06,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 07:23:06,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020187600] [2022-04-08 07:23:06,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 07:23:06,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 07:23:06,833 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 07:23:06,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [731753949] [2022-04-08 07:23:06,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 07:23:06,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 07:23:06,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 07:23:06,838 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) [2022-04-08 07:23:06,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-08 07:23:06,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-08 07:23:06,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 07:23:06,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-08 07:23:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 07:23:06,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 07:23:07,077 INFO L272 TraceCheckUtils]: 0: Hoare triple {507#true} call ULTIMATE.init(); {507#true} is VALID [2022-04-08 07:23:07,078 INFO L290 TraceCheckUtils]: 1: Hoare triple {507#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(11, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {507#true} is VALID [2022-04-08 07:23:07,078 INFO L290 TraceCheckUtils]: 2: Hoare triple {507#true} assume true; {507#true} is VALID [2022-04-08 07:23:07,078 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {507#true} {507#true} #67#return; {507#true} is VALID [2022-04-08 07:23:07,078 INFO L272 TraceCheckUtils]: 4: Hoare triple {507#true} call #t~ret7 := main(); {507#true} is VALID [2022-04-08 07:23:07,079 INFO L290 TraceCheckUtils]: 5: Hoare triple {507#true} havoc ~x1~0;havoc ~x2~0;havoc ~y1~0;havoc ~y2~0;havoc ~y3~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~x1~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~x2~0 := #t~nondet5;havoc #t~nondet5; {507#true} is VALID [2022-04-08 07:23:07,079 INFO L272 TraceCheckUtils]: 6: Hoare triple {507#true} call assume_abort_if_not((if ~x1~0 >= 0 then 1 else 0)); {507#true} is VALID [2022-04-08 07:23:07,079 INFO L290 TraceCheckUtils]: 7: Hoare triple {507#true} ~cond := #in~cond; {507#true} is VALID [2022-04-08 07:23:07,079 INFO L290 TraceCheckUtils]: 8: Hoare triple {507#true} assume !(0 == ~cond); {507#true} is VALID [2022-04-08 07:23:07,079 INFO L290 TraceCheckUtils]: 9: Hoare triple {507#true} assume true; {507#true} is VALID [2022-04-08 07:23:07,079 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {507#true} {507#true} #59#return; {507#true} is VALID [2022-04-08 07:23:07,080 INFO L272 TraceCheckUtils]: 11: Hoare triple {507#true} call assume_abort_if_not((if 0 != ~x2~0 then 1 else 0)); {507#true} is VALID [2022-04-08 07:23:07,080 INFO L290 TraceCheckUtils]: 12: Hoare triple {507#true} ~cond := #in~cond; {507#true} is VALID [2022-04-08 07:23:07,080 INFO L290 TraceCheckUtils]: 13: Hoare triple {507#true} assume !(0 == ~cond); {507#true} is VALID [2022-04-08 07:23:07,080 INFO L290 TraceCheckUtils]: 14: Hoare triple {507#true} assume true; {507#true} is VALID [2022-04-08 07:23:07,080 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {507#true} {507#true} #61#return; {507#true} is VALID [2022-04-08 07:23:07,081 INFO L290 TraceCheckUtils]: 16: Hoare triple {507#true} ~y1~0 := 0;~y2~0 := 0;~y3~0 := ~x1~0; {560#(and (= main_~y2~0 0) (= main_~y1~0 0) (= main_~x1~0 main_~y3~0))} is VALID [2022-04-08 07:23:07,082 INFO L290 TraceCheckUtils]: 17: Hoare triple {560#(and (= main_~y2~0 0) (= main_~y1~0 0) (= main_~x1~0 main_~y3~0))} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {560#(and (= main_~y2~0 0) (= main_~y1~0 0) (= main_~x1~0 main_~y3~0))} is VALID [2022-04-08 07:23:07,082 INFO L290 TraceCheckUtils]: 18: Hoare triple {560#(and (= main_~y2~0 0) (= main_~y1~0 0) (= main_~x1~0 main_~y3~0))} assume !!(#t~post6 < 2);havoc #t~post6; {560#(and (= main_~y2~0 0) (= main_~y1~0 0) (= main_~x1~0 main_~y3~0))} is VALID [2022-04-08 07:23:07,083 INFO L272 TraceCheckUtils]: 19: Hoare triple {560#(and (= main_~y2~0 0) (= main_~y1~0 0) (= main_~x1~0 main_~y3~0))} call __VERIFIER_assert((if ~y1~0 * ~x2~0 + ~y2~0 + ~y3~0 == ~x1~0 then 1 else 0)); {570#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 07:23:07,084 INFO L290 TraceCheckUtils]: 20: Hoare triple {570#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {574#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 07:23:07,084 INFO L290 TraceCheckUtils]: 21: Hoare triple {574#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {508#false} is VALID [2022-04-08 07:23:07,085 INFO L290 TraceCheckUtils]: 22: Hoare triple {508#false} assume !false; {508#false} is VALID [2022-04-08 07:23:07,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-08 07:23:07,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-08 07:23:07,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 07:23:07,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020187600] [2022-04-08 07:23:07,085 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 07:23:07,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731753949] [2022-04-08 07:23:07,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731753949] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 07:23:07,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 07:23:07,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 07:23:07,086 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 07:23:07,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [81455538] [2022-04-08 07:23:07,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [81455538] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 07:23:07,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 07:23:07,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 07:23:07,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262046641] [2022-04-08 07:23:07,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 07:23:07,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2022-04-08 07:23:07,088 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 07:23:07,088 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-08 07:23:07,109 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 07:23:07,109 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-08 07:23:07,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 07:23:07,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-08 07:23:07,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-08 07:23:07,110 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-08 07:23:07,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 07:23:07,269 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2022-04-08 07:23:07,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-08 07:23:07,270 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2022-04-08 07:23:07,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 07:23:07,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-08 07:23:07,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 43 transitions. [2022-04-08 07:23:07,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-08 07:23:07,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 43 transitions. [2022-04-08 07:23:07,274 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 43 transitions. [2022-04-08 07:23:07,314 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 43 edges. 43 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 07:23:07,315 INFO L225 Difference]: With dead ends: 37 [2022-04-08 07:23:07,315 INFO L226 Difference]: Without dead ends: 35 [2022-04-08 07:23:07,316 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-08 07:23:07,317 INFO L913 BasicCegarLoop]: 23 mSDtfsCounter, 7 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 07:23:07,317 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 83 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 07:23:07,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-04-08 07:23:07,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2022-04-08 07:23:07,337 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 07:23:07,338 INFO L82 GeneralOperation]: Start isEquivalent. First operand 35 states. Second operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 07:23:07,338 INFO L74 IsIncluded]: Start isIncluded. First operand 35 states. Second operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 07:23:07,338 INFO L87 Difference]: Start difference. First operand 35 states. Second operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 07:23:07,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 07:23:07,341 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2022-04-08 07:23:07,341 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-04-08 07:23:07,341 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 07:23:07,341 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 07:23:07,342 INFO L74 IsIncluded]: Start isIncluded. First operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Second operand 35 states. [2022-04-08 07:23:07,342 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Second operand 35 states. [2022-04-08 07:23:07,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 07:23:07,344 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2022-04-08 07:23:07,344 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-04-08 07:23:07,345 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 07:23:07,345 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 07:23:07,345 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 07:23:07,345 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 07:23:07,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 07:23:07,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-04-08 07:23:07,347 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2022-04-08 07:23:07,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 07:23:07,347 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-04-08 07:23:07,348 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-08 07:23:07,348 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 32 states and 36 transitions. [2022-04-08 07:23:07,384 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 07:23:07,384 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-04-08 07:23:07,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-04-08 07:23:07,385 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 07:23:07,385 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 07:23:07,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-08 07:23:07,608 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-08 07:23:07,609 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 07:23:07,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 07:23:07,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1019533657, now seen corresponding path program 1 times [2022-04-08 07:23:07,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 07:23:07,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [206602773] [2022-04-08 07:23:07,610 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 07:23:07,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1019533657, now seen corresponding path program 2 times [2022-04-08 07:23:07,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 07:23:07,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626058337] [2022-04-08 07:23:07,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 07:23:07,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 07:23:07,627 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 07:23:07,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [762013906] [2022-04-08 07:23:07,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 07:23:07,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 07:23:07,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 07:23:07,629 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) [2022-04-08 07:23:07,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-08 07:23:07,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-08 07:23:07,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 07:23:07,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-08 07:23:07,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 07:23:07,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 07:23:07,895 INFO L272 TraceCheckUtils]: 0: Hoare triple {790#true} call ULTIMATE.init(); {790#true} is VALID [2022-04-08 07:23:07,896 INFO L290 TraceCheckUtils]: 1: Hoare triple {790#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(11, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {790#true} is VALID [2022-04-08 07:23:07,896 INFO L290 TraceCheckUtils]: 2: Hoare triple {790#true} assume true; {790#true} is VALID [2022-04-08 07:23:07,896 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {790#true} {790#true} #67#return; {790#true} is VALID [2022-04-08 07:23:07,896 INFO L272 TraceCheckUtils]: 4: Hoare triple {790#true} call #t~ret7 := main(); {790#true} is VALID [2022-04-08 07:23:07,897 INFO L290 TraceCheckUtils]: 5: Hoare triple {790#true} havoc ~x1~0;havoc ~x2~0;havoc ~y1~0;havoc ~y2~0;havoc ~y3~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~x1~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~x2~0 := #t~nondet5;havoc #t~nondet5; {790#true} is VALID [2022-04-08 07:23:07,897 INFO L272 TraceCheckUtils]: 6: Hoare triple {790#true} call assume_abort_if_not((if ~x1~0 >= 0 then 1 else 0)); {790#true} is VALID [2022-04-08 07:23:07,897 INFO L290 TraceCheckUtils]: 7: Hoare triple {790#true} ~cond := #in~cond; {790#true} is VALID [2022-04-08 07:23:07,897 INFO L290 TraceCheckUtils]: 8: Hoare triple {790#true} assume !(0 == ~cond); {790#true} is VALID [2022-04-08 07:23:07,897 INFO L290 TraceCheckUtils]: 9: Hoare triple {790#true} assume true; {790#true} is VALID [2022-04-08 07:23:07,898 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {790#true} {790#true} #59#return; {790#true} is VALID [2022-04-08 07:23:07,898 INFO L272 TraceCheckUtils]: 11: Hoare triple {790#true} call assume_abort_if_not((if 0 != ~x2~0 then 1 else 0)); {790#true} is VALID [2022-04-08 07:23:07,898 INFO L290 TraceCheckUtils]: 12: Hoare triple {790#true} ~cond := #in~cond; {790#true} is VALID [2022-04-08 07:23:07,898 INFO L290 TraceCheckUtils]: 13: Hoare triple {790#true} assume !(0 == ~cond); {790#true} is VALID [2022-04-08 07:23:07,898 INFO L290 TraceCheckUtils]: 14: Hoare triple {790#true} assume true; {790#true} is VALID [2022-04-08 07:23:07,898 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {790#true} {790#true} #61#return; {790#true} is VALID [2022-04-08 07:23:07,898 INFO L290 TraceCheckUtils]: 16: Hoare triple {790#true} ~y1~0 := 0;~y2~0 := 0;~y3~0 := ~x1~0; {790#true} is VALID [2022-04-08 07:23:07,899 INFO L290 TraceCheckUtils]: 17: Hoare triple {790#true} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {790#true} is VALID [2022-04-08 07:23:07,899 INFO L290 TraceCheckUtils]: 18: Hoare triple {790#true} assume !!(#t~post6 < 2);havoc #t~post6; {790#true} is VALID [2022-04-08 07:23:07,899 INFO L272 TraceCheckUtils]: 19: Hoare triple {790#true} call __VERIFIER_assert((if ~y1~0 * ~x2~0 + ~y2~0 + ~y3~0 == ~x1~0 then 1 else 0)); {790#true} is VALID [2022-04-08 07:23:07,899 INFO L290 TraceCheckUtils]: 20: Hoare triple {790#true} ~cond := #in~cond; {855#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} is VALID [2022-04-08 07:23:07,900 INFO L290 TraceCheckUtils]: 21: Hoare triple {855#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} assume !(0 == ~cond); {859#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 07:23:07,902 INFO L290 TraceCheckUtils]: 22: Hoare triple {859#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {859#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 07:23:07,903 INFO L284 TraceCheckUtils]: 23: Hoare quadruple {859#(not (= |__VERIFIER_assert_#in~cond| 0))} {790#true} #63#return; {866#(= (+ (* main_~x2~0 main_~y1~0) main_~y3~0 main_~y2~0) main_~x1~0)} is VALID [2022-04-08 07:23:07,904 INFO L290 TraceCheckUtils]: 24: Hoare triple {866#(= (+ (* main_~x2~0 main_~y1~0) main_~y3~0 main_~y2~0) main_~x1~0)} assume !(0 != ~y3~0); {870#(= (+ (* main_~x2~0 main_~y1~0) main_~y2~0) main_~x1~0)} is VALID [2022-04-08 07:23:07,905 INFO L272 TraceCheckUtils]: 25: Hoare triple {870#(= (+ (* main_~x2~0 main_~y1~0) main_~y2~0) main_~x1~0)} call __VERIFIER_assert((if ~y1~0 * ~x2~0 + ~y2~0 == ~x1~0 then 1 else 0)); {874#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 07:23:07,905 INFO L290 TraceCheckUtils]: 26: Hoare triple {874#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {878#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 07:23:07,906 INFO L290 TraceCheckUtils]: 27: Hoare triple {878#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {791#false} is VALID [2022-04-08 07:23:07,906 INFO L290 TraceCheckUtils]: 28: Hoare triple {791#false} assume !false; {791#false} is VALID [2022-04-08 07:23:07,907 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-08 07:23:07,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 07:23:14,620 INFO L290 TraceCheckUtils]: 28: Hoare triple {791#false} assume !false; {791#false} is VALID [2022-04-08 07:23:14,621 INFO L290 TraceCheckUtils]: 27: Hoare triple {878#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {791#false} is VALID [2022-04-08 07:23:14,621 INFO L290 TraceCheckUtils]: 26: Hoare triple {874#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {878#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 07:23:14,622 INFO L272 TraceCheckUtils]: 25: Hoare triple {870#(= (+ (* main_~x2~0 main_~y1~0) main_~y2~0) main_~x1~0)} call __VERIFIER_assert((if ~y1~0 * ~x2~0 + ~y2~0 == ~x1~0 then 1 else 0)); {874#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 07:23:14,628 INFO L290 TraceCheckUtils]: 24: Hoare triple {897#(or (not (= main_~y3~0 0)) (= (+ (* main_~x2~0 main_~y1~0) main_~y2~0) main_~x1~0))} assume !(0 != ~y3~0); {870#(= (+ (* main_~x2~0 main_~y1~0) main_~y2~0) main_~x1~0)} is VALID [2022-04-08 07:23:14,629 INFO L284 TraceCheckUtils]: 23: Hoare quadruple {859#(not (= |__VERIFIER_assert_#in~cond| 0))} {790#true} #63#return; {897#(or (not (= main_~y3~0 0)) (= (+ (* main_~x2~0 main_~y1~0) main_~y2~0) main_~x1~0))} is VALID [2022-04-08 07:23:14,629 INFO L290 TraceCheckUtils]: 22: Hoare triple {859#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {859#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 07:23:14,632 INFO L290 TraceCheckUtils]: 21: Hoare triple {910#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} assume !(0 == ~cond); {859#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 07:23:14,632 INFO L290 TraceCheckUtils]: 20: Hoare triple {790#true} ~cond := #in~cond; {910#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-08 07:23:14,632 INFO L272 TraceCheckUtils]: 19: Hoare triple {790#true} call __VERIFIER_assert((if ~y1~0 * ~x2~0 + ~y2~0 + ~y3~0 == ~x1~0 then 1 else 0)); {790#true} is VALID [2022-04-08 07:23:14,633 INFO L290 TraceCheckUtils]: 18: Hoare triple {790#true} assume !!(#t~post6 < 2);havoc #t~post6; {790#true} is VALID [2022-04-08 07:23:14,633 INFO L290 TraceCheckUtils]: 17: Hoare triple {790#true} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {790#true} is VALID [2022-04-08 07:23:14,633 INFO L290 TraceCheckUtils]: 16: Hoare triple {790#true} ~y1~0 := 0;~y2~0 := 0;~y3~0 := ~x1~0; {790#true} is VALID [2022-04-08 07:23:14,633 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {790#true} {790#true} #61#return; {790#true} is VALID [2022-04-08 07:23:14,634 INFO L290 TraceCheckUtils]: 14: Hoare triple {790#true} assume true; {790#true} is VALID [2022-04-08 07:23:14,634 INFO L290 TraceCheckUtils]: 13: Hoare triple {790#true} assume !(0 == ~cond); {790#true} is VALID [2022-04-08 07:23:14,634 INFO L290 TraceCheckUtils]: 12: Hoare triple {790#true} ~cond := #in~cond; {790#true} is VALID [2022-04-08 07:23:14,634 INFO L272 TraceCheckUtils]: 11: Hoare triple {790#true} call assume_abort_if_not((if 0 != ~x2~0 then 1 else 0)); {790#true} is VALID [2022-04-08 07:23:14,634 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {790#true} {790#true} #59#return; {790#true} is VALID [2022-04-08 07:23:14,635 INFO L290 TraceCheckUtils]: 9: Hoare triple {790#true} assume true; {790#true} is VALID [2022-04-08 07:23:14,635 INFO L290 TraceCheckUtils]: 8: Hoare triple {790#true} assume !(0 == ~cond); {790#true} is VALID [2022-04-08 07:23:14,635 INFO L290 TraceCheckUtils]: 7: Hoare triple {790#true} ~cond := #in~cond; {790#true} is VALID [2022-04-08 07:23:14,635 INFO L272 TraceCheckUtils]: 6: Hoare triple {790#true} call assume_abort_if_not((if ~x1~0 >= 0 then 1 else 0)); {790#true} is VALID [2022-04-08 07:23:14,635 INFO L290 TraceCheckUtils]: 5: Hoare triple {790#true} havoc ~x1~0;havoc ~x2~0;havoc ~y1~0;havoc ~y2~0;havoc ~y3~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~x1~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~x2~0 := #t~nondet5;havoc #t~nondet5; {790#true} is VALID [2022-04-08 07:23:14,635 INFO L272 TraceCheckUtils]: 4: Hoare triple {790#true} call #t~ret7 := main(); {790#true} is VALID [2022-04-08 07:23:14,636 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {790#true} {790#true} #67#return; {790#true} is VALID [2022-04-08 07:23:14,636 INFO L290 TraceCheckUtils]: 2: Hoare triple {790#true} assume true; {790#true} is VALID [2022-04-08 07:23:14,636 INFO L290 TraceCheckUtils]: 1: Hoare triple {790#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(11, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {790#true} is VALID [2022-04-08 07:23:14,636 INFO L272 TraceCheckUtils]: 0: Hoare triple {790#true} call ULTIMATE.init(); {790#true} is VALID [2022-04-08 07:23:14,636 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-08 07:23:14,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 07:23:14,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626058337] [2022-04-08 07:23:14,637 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 07:23:14,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762013906] [2022-04-08 07:23:14,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762013906] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-08 07:23:14,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-08 07:23:14,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-04-08 07:23:14,638 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 07:23:14,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [206602773] [2022-04-08 07:23:14,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [206602773] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 07:23:14,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 07:23:14,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-08 07:23:14,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91026459] [2022-04-08 07:23:14,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 07:23:14,639 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2022-04-08 07:23:14,639 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 07:23:14,640 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-08 07:23:14,679 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 07:23:14,680 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-08 07:23:14,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 07:23:14,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-08 07:23:14,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-04-08 07:23:14,681 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-08 07:23:14,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 07:23:14,921 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-04-08 07:23:14,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-08 07:23:14,921 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2022-04-08 07:23:14,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 07:23:14,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-08 07:23:14,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 35 transitions. [2022-04-08 07:23:14,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-08 07:23:14,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 35 transitions. [2022-04-08 07:23:14,924 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 8 states and 35 transitions. [2022-04-08 07:23:14,960 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 07:23:14,962 INFO L225 Difference]: With dead ends: 39 [2022-04-08 07:23:14,962 INFO L226 Difference]: Without dead ends: 34 [2022-04-08 07:23:14,962 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-04-08 07:23:14,963 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 17 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 07:23:14,963 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 103 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 07:23:14,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-04-08 07:23:14,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2022-04-08 07:23:14,985 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 07:23:14,985 INFO L82 GeneralOperation]: Start isEquivalent. First operand 34 states. Second operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 07:23:14,985 INFO L74 IsIncluded]: Start isIncluded. First operand 34 states. Second operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 07:23:14,986 INFO L87 Difference]: Start difference. First operand 34 states. Second operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 07:23:14,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 07:23:14,989 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-04-08 07:23:14,989 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2022-04-08 07:23:14,992 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 07:23:14,992 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 07:23:14,992 INFO L74 IsIncluded]: Start isIncluded. First operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 34 states. [2022-04-08 07:23:14,992 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 34 states. [2022-04-08 07:23:15,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 07:23:15,000 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-04-08 07:23:15,000 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2022-04-08 07:23:15,001 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 07:23:15,001 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 07:23:15,001 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 07:23:15,001 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 07:23:15,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 07:23:15,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2022-04-08 07:23:15,004 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 29 [2022-04-08 07:23:15,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 07:23:15,005 INFO L478 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2022-04-08 07:23:15,005 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-08 07:23:15,005 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 29 states and 31 transitions. [2022-04-08 07:23:15,042 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 07:23:15,042 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2022-04-08 07:23:15,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-04-08 07:23:15,043 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 07:23:15,044 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 07:23:15,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-08 07:23:15,259 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 07:23:15,260 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 07:23:15,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 07:23:15,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1080225052, now seen corresponding path program 1 times [2022-04-08 07:23:15,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 07:23:15,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1999573314] [2022-04-08 07:23:15,260 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 07:23:15,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1080225052, now seen corresponding path program 2 times [2022-04-08 07:23:15,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 07:23:15,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82938506] [2022-04-08 07:23:15,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 07:23:15,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 07:23:15,274 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 07:23:15,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1578730071] [2022-04-08 07:23:15,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 07:23:15,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 07:23:15,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 07:23:15,276 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) [2022-04-08 07:23:15,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-08 07:23:15,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-08 07:23:15,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 07:23:15,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-08 07:23:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 07:23:15,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 07:23:15,495 INFO L272 TraceCheckUtils]: 0: Hoare triple {1183#true} call ULTIMATE.init(); {1183#true} is VALID [2022-04-08 07:23:15,496 INFO L290 TraceCheckUtils]: 1: Hoare triple {1183#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(11, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {1191#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:15,496 INFO L290 TraceCheckUtils]: 2: Hoare triple {1191#(<= ~counter~0 0)} assume true; {1191#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:15,497 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1191#(<= ~counter~0 0)} {1183#true} #67#return; {1191#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:15,497 INFO L272 TraceCheckUtils]: 4: Hoare triple {1191#(<= ~counter~0 0)} call #t~ret7 := main(); {1191#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:15,498 INFO L290 TraceCheckUtils]: 5: Hoare triple {1191#(<= ~counter~0 0)} havoc ~x1~0;havoc ~x2~0;havoc ~y1~0;havoc ~y2~0;havoc ~y3~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~x1~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~x2~0 := #t~nondet5;havoc #t~nondet5; {1191#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:15,498 INFO L272 TraceCheckUtils]: 6: Hoare triple {1191#(<= ~counter~0 0)} call assume_abort_if_not((if ~x1~0 >= 0 then 1 else 0)); {1191#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:15,499 INFO L290 TraceCheckUtils]: 7: Hoare triple {1191#(<= ~counter~0 0)} ~cond := #in~cond; {1191#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:15,499 INFO L290 TraceCheckUtils]: 8: Hoare triple {1191#(<= ~counter~0 0)} assume !(0 == ~cond); {1191#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:15,500 INFO L290 TraceCheckUtils]: 9: Hoare triple {1191#(<= ~counter~0 0)} assume true; {1191#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:15,500 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {1191#(<= ~counter~0 0)} {1191#(<= ~counter~0 0)} #59#return; {1191#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:15,501 INFO L272 TraceCheckUtils]: 11: Hoare triple {1191#(<= ~counter~0 0)} call assume_abort_if_not((if 0 != ~x2~0 then 1 else 0)); {1191#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:15,501 INFO L290 TraceCheckUtils]: 12: Hoare triple {1191#(<= ~counter~0 0)} ~cond := #in~cond; {1191#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:15,503 INFO L290 TraceCheckUtils]: 13: Hoare triple {1191#(<= ~counter~0 0)} assume !(0 == ~cond); {1191#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:15,504 INFO L290 TraceCheckUtils]: 14: Hoare triple {1191#(<= ~counter~0 0)} assume true; {1191#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:15,504 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {1191#(<= ~counter~0 0)} {1191#(<= ~counter~0 0)} #61#return; {1191#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:15,505 INFO L290 TraceCheckUtils]: 16: Hoare triple {1191#(<= ~counter~0 0)} ~y1~0 := 0;~y2~0 := 0;~y3~0 := ~x1~0; {1191#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:15,505 INFO L290 TraceCheckUtils]: 17: Hoare triple {1191#(<= ~counter~0 0)} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {1240#(<= ~counter~0 1)} is VALID [2022-04-08 07:23:15,506 INFO L290 TraceCheckUtils]: 18: Hoare triple {1240#(<= ~counter~0 1)} assume !!(#t~post6 < 2);havoc #t~post6; {1240#(<= ~counter~0 1)} is VALID [2022-04-08 07:23:15,506 INFO L272 TraceCheckUtils]: 19: Hoare triple {1240#(<= ~counter~0 1)} call __VERIFIER_assert((if ~y1~0 * ~x2~0 + ~y2~0 + ~y3~0 == ~x1~0 then 1 else 0)); {1240#(<= ~counter~0 1)} is VALID [2022-04-08 07:23:15,507 INFO L290 TraceCheckUtils]: 20: Hoare triple {1240#(<= ~counter~0 1)} ~cond := #in~cond; {1240#(<= ~counter~0 1)} is VALID [2022-04-08 07:23:15,507 INFO L290 TraceCheckUtils]: 21: Hoare triple {1240#(<= ~counter~0 1)} assume !(0 == ~cond); {1240#(<= ~counter~0 1)} is VALID [2022-04-08 07:23:15,508 INFO L290 TraceCheckUtils]: 22: Hoare triple {1240#(<= ~counter~0 1)} assume true; {1240#(<= ~counter~0 1)} is VALID [2022-04-08 07:23:15,509 INFO L284 TraceCheckUtils]: 23: Hoare quadruple {1240#(<= ~counter~0 1)} {1240#(<= ~counter~0 1)} #63#return; {1240#(<= ~counter~0 1)} is VALID [2022-04-08 07:23:15,509 INFO L290 TraceCheckUtils]: 24: Hoare triple {1240#(<= ~counter~0 1)} assume !!(0 != ~y3~0); {1240#(<= ~counter~0 1)} is VALID [2022-04-08 07:23:15,509 INFO L290 TraceCheckUtils]: 25: Hoare triple {1240#(<= ~counter~0 1)} assume 1 + ~y2~0 == ~x2~0;~y1~0 := 1 + ~y1~0;~y2~0 := 0;~y3~0 := ~y3~0 - 1; {1240#(<= ~counter~0 1)} is VALID [2022-04-08 07:23:15,510 INFO L290 TraceCheckUtils]: 26: Hoare triple {1240#(<= ~counter~0 1)} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {1268#(<= |main_#t~post6| 1)} is VALID [2022-04-08 07:23:15,510 INFO L290 TraceCheckUtils]: 27: Hoare triple {1268#(<= |main_#t~post6| 1)} assume !(#t~post6 < 2);havoc #t~post6; {1184#false} is VALID [2022-04-08 07:23:15,511 INFO L272 TraceCheckUtils]: 28: Hoare triple {1184#false} call __VERIFIER_assert((if ~y1~0 * ~x2~0 + ~y2~0 == ~x1~0 then 1 else 0)); {1184#false} is VALID [2022-04-08 07:23:15,511 INFO L290 TraceCheckUtils]: 29: Hoare triple {1184#false} ~cond := #in~cond; {1184#false} is VALID [2022-04-08 07:23:15,511 INFO L290 TraceCheckUtils]: 30: Hoare triple {1184#false} assume 0 == ~cond; {1184#false} is VALID [2022-04-08 07:23:15,511 INFO L290 TraceCheckUtils]: 31: Hoare triple {1184#false} assume !false; {1184#false} is VALID [2022-04-08 07:23:15,511 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-08 07:23:15,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 07:23:15,683 INFO L290 TraceCheckUtils]: 31: Hoare triple {1184#false} assume !false; {1184#false} is VALID [2022-04-08 07:23:15,683 INFO L290 TraceCheckUtils]: 30: Hoare triple {1184#false} assume 0 == ~cond; {1184#false} is VALID [2022-04-08 07:23:15,684 INFO L290 TraceCheckUtils]: 29: Hoare triple {1184#false} ~cond := #in~cond; {1184#false} is VALID [2022-04-08 07:23:15,684 INFO L272 TraceCheckUtils]: 28: Hoare triple {1184#false} call __VERIFIER_assert((if ~y1~0 * ~x2~0 + ~y2~0 == ~x1~0 then 1 else 0)); {1184#false} is VALID [2022-04-08 07:23:15,684 INFO L290 TraceCheckUtils]: 27: Hoare triple {1268#(<= |main_#t~post6| 1)} assume !(#t~post6 < 2);havoc #t~post6; {1184#false} is VALID [2022-04-08 07:23:15,685 INFO L290 TraceCheckUtils]: 26: Hoare triple {1240#(<= ~counter~0 1)} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {1268#(<= |main_#t~post6| 1)} is VALID [2022-04-08 07:23:15,685 INFO L290 TraceCheckUtils]: 25: Hoare triple {1240#(<= ~counter~0 1)} assume 1 + ~y2~0 == ~x2~0;~y1~0 := 1 + ~y1~0;~y2~0 := 0;~y3~0 := ~y3~0 - 1; {1240#(<= ~counter~0 1)} is VALID [2022-04-08 07:23:15,685 INFO L290 TraceCheckUtils]: 24: Hoare triple {1240#(<= ~counter~0 1)} assume !!(0 != ~y3~0); {1240#(<= ~counter~0 1)} is VALID [2022-04-08 07:23:15,686 INFO L284 TraceCheckUtils]: 23: Hoare quadruple {1183#true} {1240#(<= ~counter~0 1)} #63#return; {1240#(<= ~counter~0 1)} is VALID [2022-04-08 07:23:15,686 INFO L290 TraceCheckUtils]: 22: Hoare triple {1183#true} assume true; {1183#true} is VALID [2022-04-08 07:23:15,686 INFO L290 TraceCheckUtils]: 21: Hoare triple {1183#true} assume !(0 == ~cond); {1183#true} is VALID [2022-04-08 07:23:15,686 INFO L290 TraceCheckUtils]: 20: Hoare triple {1183#true} ~cond := #in~cond; {1183#true} is VALID [2022-04-08 07:23:15,687 INFO L272 TraceCheckUtils]: 19: Hoare triple {1240#(<= ~counter~0 1)} call __VERIFIER_assert((if ~y1~0 * ~x2~0 + ~y2~0 + ~y3~0 == ~x1~0 then 1 else 0)); {1183#true} is VALID [2022-04-08 07:23:15,695 INFO L290 TraceCheckUtils]: 18: Hoare triple {1240#(<= ~counter~0 1)} assume !!(#t~post6 < 2);havoc #t~post6; {1240#(<= ~counter~0 1)} is VALID [2022-04-08 07:23:15,696 INFO L290 TraceCheckUtils]: 17: Hoare triple {1191#(<= ~counter~0 0)} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {1240#(<= ~counter~0 1)} is VALID [2022-04-08 07:23:15,696 INFO L290 TraceCheckUtils]: 16: Hoare triple {1191#(<= ~counter~0 0)} ~y1~0 := 0;~y2~0 := 0;~y3~0 := ~x1~0; {1191#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:15,698 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {1183#true} {1191#(<= ~counter~0 0)} #61#return; {1191#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:15,698 INFO L290 TraceCheckUtils]: 14: Hoare triple {1183#true} assume true; {1183#true} is VALID [2022-04-08 07:23:15,698 INFO L290 TraceCheckUtils]: 13: Hoare triple {1183#true} assume !(0 == ~cond); {1183#true} is VALID [2022-04-08 07:23:15,698 INFO L290 TraceCheckUtils]: 12: Hoare triple {1183#true} ~cond := #in~cond; {1183#true} is VALID [2022-04-08 07:23:15,698 INFO L272 TraceCheckUtils]: 11: Hoare triple {1191#(<= ~counter~0 0)} call assume_abort_if_not((if 0 != ~x2~0 then 1 else 0)); {1183#true} is VALID [2022-04-08 07:23:15,699 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {1183#true} {1191#(<= ~counter~0 0)} #59#return; {1191#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:15,699 INFO L290 TraceCheckUtils]: 9: Hoare triple {1183#true} assume true; {1183#true} is VALID [2022-04-08 07:23:15,699 INFO L290 TraceCheckUtils]: 8: Hoare triple {1183#true} assume !(0 == ~cond); {1183#true} is VALID [2022-04-08 07:23:15,699 INFO L290 TraceCheckUtils]: 7: Hoare triple {1183#true} ~cond := #in~cond; {1183#true} is VALID [2022-04-08 07:23:15,699 INFO L272 TraceCheckUtils]: 6: Hoare triple {1191#(<= ~counter~0 0)} call assume_abort_if_not((if ~x1~0 >= 0 then 1 else 0)); {1183#true} is VALID [2022-04-08 07:23:15,700 INFO L290 TraceCheckUtils]: 5: Hoare triple {1191#(<= ~counter~0 0)} havoc ~x1~0;havoc ~x2~0;havoc ~y1~0;havoc ~y2~0;havoc ~y3~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~x1~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~x2~0 := #t~nondet5;havoc #t~nondet5; {1191#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:15,700 INFO L272 TraceCheckUtils]: 4: Hoare triple {1191#(<= ~counter~0 0)} call #t~ret7 := main(); {1191#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:15,705 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1191#(<= ~counter~0 0)} {1183#true} #67#return; {1191#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:15,705 INFO L290 TraceCheckUtils]: 2: Hoare triple {1191#(<= ~counter~0 0)} assume true; {1191#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:15,706 INFO L290 TraceCheckUtils]: 1: Hoare triple {1183#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(11, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {1191#(<= ~counter~0 0)} is VALID [2022-04-08 07:23:15,706 INFO L272 TraceCheckUtils]: 0: Hoare triple {1183#true} call ULTIMATE.init(); {1183#true} is VALID [2022-04-08 07:23:15,706 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-08 07:23:15,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 07:23:15,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82938506] [2022-04-08 07:23:15,709 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 07:23:15,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578730071] [2022-04-08 07:23:15,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578730071] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-08 07:23:15,709 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-08 07:23:15,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2022-04-08 07:23:15,710 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 07:23:15,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1999573314] [2022-04-08 07:23:15,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1999573314] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 07:23:15,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 07:23:15,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 07:23:15,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8548681] [2022-04-08 07:23:15,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 07:23:15,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2022-04-08 07:23:15,711 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 07:23:15,712 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-08 07:23:15,735 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 29 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 07:23:15,735 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-08 07:23:15,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 07:23:15,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-08 07:23:15,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-08 07:23:15,736 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-08 07:23:15,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 07:23:15,852 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2022-04-08 07:23:15,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-08 07:23:15,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2022-04-08 07:23:15,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 07:23:15,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-08 07:23:15,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 45 transitions. [2022-04-08 07:23:15,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-08 07:23:15,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 45 transitions. [2022-04-08 07:23:15,865 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 45 transitions. [2022-04-08 07:23:15,897 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 45 edges. 45 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 07:23:15,898 INFO L225 Difference]: With dead ends: 43 [2022-04-08 07:23:15,898 INFO L226 Difference]: Without dead ends: 38 [2022-04-08 07:23:15,898 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-08 07:23:15,899 INFO L913 BasicCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 07:23:15,899 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 78 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 07:23:15,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-04-08 07:23:15,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-04-08 07:23:15,922 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 07:23:15,922 INFO L82 GeneralOperation]: Start isEquivalent. First operand 38 states. Second operand has 38 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 07:23:15,922 INFO L74 IsIncluded]: Start isIncluded. First operand 38 states. Second operand has 38 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 07:23:15,923 INFO L87 Difference]: Start difference. First operand 38 states. Second operand has 38 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 07:23:15,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 07:23:15,924 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2022-04-08 07:23:15,924 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2022-04-08 07:23:15,925 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 07:23:15,925 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 07:23:15,925 INFO L74 IsIncluded]: Start isIncluded. First operand has 38 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 38 states. [2022-04-08 07:23:15,925 INFO L87 Difference]: Start difference. First operand has 38 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 38 states. [2022-04-08 07:23:15,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 07:23:15,927 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2022-04-08 07:23:15,927 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2022-04-08 07:23:15,927 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 07:23:15,927 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 07:23:15,927 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 07:23:15,927 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 07:23:15,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 07:23:15,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2022-04-08 07:23:15,929 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 32 [2022-04-08 07:23:15,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 07:23:15,929 INFO L478 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2022-04-08 07:23:15,930 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-08 07:23:15,930 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 38 states and 41 transitions. [2022-04-08 07:23:15,975 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 07:23:15,975 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2022-04-08 07:23:15,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-04-08 07:23:15,977 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 07:23:15,977 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 07:23:15,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-08 07:23:16,183 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 07:23:16,183 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 07:23:16,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 07:23:16,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1448743382, now seen corresponding path program 3 times [2022-04-08 07:23:16,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 07:23:16,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [852268454] [2022-04-08 07:23:16,184 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 07:23:16,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1448743382, now seen corresponding path program 4 times [2022-04-08 07:23:16,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 07:23:16,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419125466] [2022-04-08 07:23:16,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 07:23:16,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 07:23:16,211 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 07:23:16,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [137318032] [2022-04-08 07:23:16,212 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-08 07:23:16,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 07:23:16,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 07:23:16,220 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) [2022-04-08 07:23:16,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-08 07:23:16,275 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-08 07:23:16,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-04-08 07:23:16,275 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-08 07:23:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-08 07:23:16,329 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-08 07:23:16,330 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-04-08 07:23:16,330 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-08 07:23:16,332 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-08 07:23:16,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-08 07:23:16,559 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 07:23:16,562 INFO L719 BasicCegarLoop]: Path program histogram: [4, 2, 2, 2, 2] [2022-04-08 07:23:16,565 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-08 07:23:16,575 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-08 07:23:16,576 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2022-04-08 07:23:16,576 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-08 07:23:16,576 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-08 07:23:16,576 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2022-04-08 07:23:16,576 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2022-04-08 07:23:16,576 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2022-04-08 07:23:16,577 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-08 07:23:16,577 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-08 07:23:16,577 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-08 07:23:16,577 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-08 07:23:16,577 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2022-04-08 07:23:16,577 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2022-04-08 07:23:16,577 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2022-04-08 07:23:16,577 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2022-04-08 07:23:16,577 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-04-08 07:23:16,577 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-04-08 07:23:16,577 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2022-04-08 07:23:16,577 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-08 07:23:16,577 WARN L170 areAnnotationChecker]: L13-2 has no Hoare annotation [2022-04-08 07:23:16,577 WARN L170 areAnnotationChecker]: L29-1 has no Hoare annotation [2022-04-08 07:23:16,577 WARN L170 areAnnotationChecker]: L29-1 has no Hoare annotation [2022-04-08 07:23:16,577 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2022-04-08 07:23:16,578 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2022-04-08 07:23:16,578 WARN L170 areAnnotationChecker]: L16-2 has no Hoare annotation [2022-04-08 07:23:16,578 WARN L170 areAnnotationChecker]: assume_abort_if_notEXIT has no Hoare annotation [2022-04-08 07:23:16,578 WARN L170 areAnnotationChecker]: assume_abort_if_notEXIT has no Hoare annotation [2022-04-08 07:23:16,578 WARN L170 areAnnotationChecker]: L30 has no Hoare annotation [2022-04-08 07:23:16,578 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-08 07:23:16,578 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-08 07:23:16,578 WARN L170 areAnnotationChecker]: L41-2 has no Hoare annotation [2022-04-08 07:23:16,578 WARN L170 areAnnotationChecker]: L41-2 has no Hoare annotation [2022-04-08 07:23:16,578 WARN L170 areAnnotationChecker]: L37-1 has no Hoare annotation [2022-04-08 07:23:16,578 WARN L170 areAnnotationChecker]: L37-1 has no Hoare annotation [2022-04-08 07:23:16,578 WARN L170 areAnnotationChecker]: L50 has no Hoare annotation [2022-04-08 07:23:16,578 WARN L170 areAnnotationChecker]: L36-3 has no Hoare annotation [2022-04-08 07:23:16,578 WARN L170 areAnnotationChecker]: L36-3 has no Hoare annotation [2022-04-08 07:23:16,578 WARN L170 areAnnotationChecker]: L36-1 has no Hoare annotation [2022-04-08 07:23:16,578 WARN L170 areAnnotationChecker]: L36-1 has no Hoare annotation [2022-04-08 07:23:16,578 WARN L170 areAnnotationChecker]: L41 has no Hoare annotation [2022-04-08 07:23:16,579 WARN L170 areAnnotationChecker]: L41 has no Hoare annotation [2022-04-08 07:23:16,579 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-08 07:23:16,579 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2022-04-08 07:23:16,579 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2022-04-08 07:23:16,579 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2022-04-08 07:23:16,579 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-08 07:23:16,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.04 07:23:16 BoogieIcfgContainer [2022-04-08 07:23:16,580 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-08 07:23:16,581 INFO L158 Benchmark]: Toolchain (without parser) took 11938.91ms. Allocated memory was 189.8MB in the beginning and 228.6MB in the end (delta: 38.8MB). Free memory was 137.7MB in the beginning and 104.9MB in the end (delta: 32.7MB). Peak memory consumption was 72.2MB. Max. memory is 8.0GB. [2022-04-08 07:23:16,581 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 189.8MB. Free memory is still 154.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-08 07:23:16,581 INFO L158 Benchmark]: CACSL2BoogieTranslator took 242.44ms. Allocated memory is still 189.8MB. Free memory was 137.5MB in the beginning and 165.3MB in the end (delta: -27.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-08 07:23:16,582 INFO L158 Benchmark]: Boogie Preprocessor took 27.47ms. Allocated memory is still 189.8MB. Free memory was 165.3MB in the beginning and 163.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-08 07:23:16,582 INFO L158 Benchmark]: RCFGBuilder took 212.27ms. Allocated memory is still 189.8MB. Free memory was 163.5MB in the beginning and 152.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-08 07:23:16,582 INFO L158 Benchmark]: TraceAbstraction took 11452.36ms. Allocated memory was 189.8MB in the beginning and 228.6MB in the end (delta: 38.8MB). Free memory was 152.7MB in the beginning and 104.9MB in the end (delta: 47.8MB). Peak memory consumption was 88.1MB. Max. memory is 8.0GB. [2022-04-08 07:23:16,583 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 0.09ms. Allocated memory is still 189.8MB. Free memory is still 154.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 242.44ms. Allocated memory is still 189.8MB. Free memory was 137.5MB in the beginning and 165.3MB in the end (delta: -27.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.47ms. Allocated memory is still 189.8MB. Free memory was 165.3MB in the beginning and 163.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 212.27ms. Allocated memory is still 189.8MB. Free memory was 163.5MB in the beginning and 152.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 11452.36ms. Allocated memory was 189.8MB in the beginning and 228.6MB in the end (delta: 38.8MB). Free memory was 152.7MB in the beginning and 104.9MB in the end (delta: 47.8MB). Peak memory consumption was 88.1MB. 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 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L29] CALL assume_abort_if_not(x1 >= 0) [L13] COND FALSE !(!cond) [L29] RET assume_abort_if_not(x1 >= 0) [L30] CALL assume_abort_if_not(x2 != 0) [L13] COND FALSE !(!cond) [L30] RET assume_abort_if_not(x2 != 0) [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 [L36] EXPR counter++ [L36] COND TRUE counter++<2 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) [L16] COND FALSE !(!(cond)) [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 [L36] EXPR counter++ [L36] COND TRUE counter++<2 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) [L16] COND FALSE !(!(cond)) [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 [L36] EXPR counter++ [L36] COND FALSE !(counter++<2) [L50] CALL __VERIFIER_assert(y1*x2 + y2 == x1) [L16] COND TRUE !(cond) [L18] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.4s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 44 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41 mSDsluCounter, 366 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 237 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 123 IncrementalHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 129 mSDtfsCounter, 123 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 179 GetRequests, 155 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=5, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, 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 RESULT: Ultimate proved your program to be incorrect! [2022-04-08 07:23:16,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...