/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-e106359-m [2022-04-14 17:48:17,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-14 17:48:17,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-14 17:48:17,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-14 17:48:17,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-14 17:48:17,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-14 17:48:17,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-14 17:48:17,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-14 17:48:17,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-14 17:48:17,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-14 17:48:17,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-14 17:48:17,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-14 17:48:17,324 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-14 17:48:17,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-14 17:48:17,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-14 17:48:17,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-14 17:48:17,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-14 17:48:17,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-14 17:48:17,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-14 17:48:17,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-14 17:48:17,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-14 17:48:17,335 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-04-14 17:48:17,348 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-14 17:48:17,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-14 17:48:17,348 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-14 17:48:17,348 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-14 17:48:17,349 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-14 17:48:17,349 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-14 17:48:17,349 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-14 17:48:17,349 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-14 17:48:17,349 INFO L138 SettingsManager]: * Use SBE=true [2022-04-14 17:48:17,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-14 17:48:17,350 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-14 17:48:17,350 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-14 17:48:17,350 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-14 17:48:17,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-14 17:48:17,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-14 17:48:17,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-14 17:48:17,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-14 17:48:17,350 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-14 17:48:17,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-14 17:48:17,350 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-14 17:48:17,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-14 17:48:17,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-14 17:48:17,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-14 17:48:17,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-14 17:48:17,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-14 17:48:17,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-14 17:48:17,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-14 17:48:17,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-14 17:48:17,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-14 17:48:17,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-14 17:48:17,352 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-14 17:48:17,352 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-14 17:48:17,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-14 17:48:17,352 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-14 17:48:17,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-14 17:48:17,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-14 17:48:17,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-14 17:48:17,503 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-14 17:48:17,504 INFO L275 PluginConnector]: CDTParser initialized [2022-04-14 17:48:17,505 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_unwindbound2.c [2022-04-14 17:48:17,568 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78ab2fdaf/125213de79d340968c10d96f4f67d266/FLAGca49ab2e8 [2022-04-14 17:48:17,928 INFO L306 CDTParser]: Found 1 translation units. [2022-04-14 17:48:17,928 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_unwindbound2.c [2022-04-14 17:48:17,932 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78ab2fdaf/125213de79d340968c10d96f4f67d266/FLAGca49ab2e8 [2022-04-14 17:48:18,366 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78ab2fdaf/125213de79d340968c10d96f4f67d266 [2022-04-14 17:48:18,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-14 17:48:18,369 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-14 17:48:18,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-14 17:48:18,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-14 17:48:18,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-14 17:48:18,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 05:48:18" (1/1) ... [2022-04-14 17:48:18,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42c55c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:48:18, skipping insertion in model container [2022-04-14 17:48:18,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 05:48:18" (1/1) ... [2022-04-14 17:48:18,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-14 17:48:18,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-14 17:48:18,508 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/ps6-ll_unwindbound2.c[458,471] [2022-04-14 17:48:18,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-14 17:48:18,537 INFO L203 MainTranslator]: Completed pre-run [2022-04-14 17:48:18,551 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/ps6-ll_unwindbound2.c[458,471] [2022-04-14 17:48:18,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-14 17:48:18,581 INFO L208 MainTranslator]: Completed translation [2022-04-14 17:48:18,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:48:18 WrapperNode [2022-04-14 17:48:18,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-14 17:48:18,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-14 17:48:18,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-14 17:48:18,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-14 17:48:18,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:48:18" (1/1) ... [2022-04-14 17:48:18,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:48:18" (1/1) ... [2022-04-14 17:48:18,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:48:18" (1/1) ... [2022-04-14 17:48:18,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:48:18" (1/1) ... [2022-04-14 17:48:18,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:48:18" (1/1) ... [2022-04-14 17:48:18,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:48:18" (1/1) ... [2022-04-14 17:48:18,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:48:18" (1/1) ... [2022-04-14 17:48:18,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-14 17:48:18,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-14 17:48:18,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-14 17:48:18,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-14 17:48:18,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:48:18" (1/1) ... [2022-04-14 17:48:18,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-14 17:48:18,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-14 17:48:18,645 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) [2022-04-14 17:48:18,662 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 [2022-04-14 17:48:18,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-14 17:48:18,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-14 17:48:18,698 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-14 17:48:18,698 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-14 17:48:18,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-14 17:48:18,698 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-14 17:48:18,698 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-14 17:48:18,699 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-14 17:48:18,699 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-14 17:48:18,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-14 17:48:18,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-04-14 17:48:18,699 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-14 17:48:18,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-14 17:48:18,699 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-14 17:48:18,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-14 17:48:18,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-14 17:48:18,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-14 17:48:18,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-14 17:48:18,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-14 17:48:18,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-14 17:48:18,753 INFO L234 CfgBuilder]: Building ICFG [2022-04-14 17:48:18,755 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-14 17:48:18,887 INFO L275 CfgBuilder]: Performing block encoding [2022-04-14 17:48:18,892 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-14 17:48:18,892 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-14 17:48:18,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.04 05:48:18 BoogieIcfgContainer [2022-04-14 17:48:18,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-14 17:48:18,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-14 17:48:18,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-14 17:48:18,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-14 17:48:18,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 05:48:18" (1/3) ... [2022-04-14 17:48:18,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6782ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 05:48:18, skipping insertion in model container [2022-04-14 17:48:18,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:48:18" (2/3) ... [2022-04-14 17:48:18,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6782ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 05:48:18, skipping insertion in model container [2022-04-14 17:48:18,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.04 05:48:18" (3/3) ... [2022-04-14 17:48:18,899 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_unwindbound2.c [2022-04-14 17:48:18,902 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-14 17:48:18,903 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-14 17:48:18,932 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-14 17:48:18,937 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2022-04-14 17:48:18,937 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-14 17:48:18,950 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 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) [2022-04-14 17:48:18,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-14 17:48:18,954 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 17:48:18,954 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 17:48:18,954 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 17:48:18,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 17:48:18,958 INFO L85 PathProgramCache]: Analyzing trace with hash 21872251, now seen corresponding path program 1 times [2022-04-14 17:48:18,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 17:48:18,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319153075] [2022-04-14 17:48:18,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 17:48:18,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 17:48:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 17:48:19,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 17:48:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 17:48:19,107 INFO L290 TraceCheckUtils]: 0: Hoare triple {41#(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(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {32#true} is VALID [2022-04-14 17:48:19,108 INFO L290 TraceCheckUtils]: 1: Hoare triple {32#true} assume true; {32#true} is VALID [2022-04-14 17:48:19,108 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {32#true} {32#true} #61#return; {32#true} is VALID [2022-04-14 17:48:19,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-14 17:48:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 17:48:19,127 INFO L290 TraceCheckUtils]: 0: Hoare triple {32#true} ~cond := #in~cond; {32#true} is VALID [2022-04-14 17:48:19,128 INFO L290 TraceCheckUtils]: 1: Hoare triple {32#true} assume 0 == ~cond;assume false; {33#false} is VALID [2022-04-14 17:48:19,128 INFO L290 TraceCheckUtils]: 2: Hoare triple {33#false} assume true; {33#false} is VALID [2022-04-14 17:48:19,128 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {33#false} {32#true} #53#return; {33#false} is VALID [2022-04-14 17:48:19,136 INFO L272 TraceCheckUtils]: 0: Hoare triple {32#true} call ULTIMATE.init(); {41#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 17:48:19,136 INFO L290 TraceCheckUtils]: 1: Hoare triple {41#(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(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {32#true} is VALID [2022-04-14 17:48:19,136 INFO L290 TraceCheckUtils]: 2: Hoare triple {32#true} assume true; {32#true} is VALID [2022-04-14 17:48:19,136 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {32#true} {32#true} #61#return; {32#true} is VALID [2022-04-14 17:48:19,136 INFO L272 TraceCheckUtils]: 4: Hoare triple {32#true} call #t~ret6 := main(); {32#true} is VALID [2022-04-14 17:48:19,137 INFO L290 TraceCheckUtils]: 5: Hoare triple {32#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {32#true} is VALID [2022-04-14 17:48:19,137 INFO L272 TraceCheckUtils]: 6: Hoare triple {32#true} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {32#true} is VALID [2022-04-14 17:48:19,137 INFO L290 TraceCheckUtils]: 7: Hoare triple {32#true} ~cond := #in~cond; {32#true} is VALID [2022-04-14 17:48:19,138 INFO L290 TraceCheckUtils]: 8: Hoare triple {32#true} assume 0 == ~cond;assume false; {33#false} is VALID [2022-04-14 17:48:19,138 INFO L290 TraceCheckUtils]: 9: Hoare triple {33#false} assume true; {33#false} is VALID [2022-04-14 17:48:19,138 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {33#false} {32#true} #53#return; {33#false} is VALID [2022-04-14 17:48:19,138 INFO L290 TraceCheckUtils]: 11: Hoare triple {33#false} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {33#false} is VALID [2022-04-14 17:48:19,138 INFO L290 TraceCheckUtils]: 12: Hoare triple {33#false} assume !true; {33#false} is VALID [2022-04-14 17:48:19,138 INFO L272 TraceCheckUtils]: 13: Hoare triple {33#false} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {33#false} is VALID [2022-04-14 17:48:19,139 INFO L290 TraceCheckUtils]: 14: Hoare triple {33#false} ~cond := #in~cond; {33#false} is VALID [2022-04-14 17:48:19,139 INFO L290 TraceCheckUtils]: 15: Hoare triple {33#false} assume 0 == ~cond; {33#false} is VALID [2022-04-14 17:48:19,139 INFO L290 TraceCheckUtils]: 16: Hoare triple {33#false} assume !false; {33#false} is VALID [2022-04-14 17:48:19,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 17:48:19,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 17:48:19,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319153075] [2022-04-14 17:48:19,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319153075] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 17:48:19,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 17:48:19,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-14 17:48:19,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568019379] [2022-04-14 17:48:19,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 17:48:19,146 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, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-04-14 17:48:19,147 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 17:48:19,149 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, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-14 17:48:19,186 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 17:48:19,187 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-14 17:48:19,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 17:48:19,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-14 17:48:19,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-14 17:48:19,214 INFO L87 Difference]: Start difference. First operand has 29 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 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, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-14 17:48:19,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 17:48:19,457 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2022-04-14 17:48:19,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-14 17:48:19,458 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, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-04-14 17:48:19,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 17:48:19,459 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, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-14 17:48:19,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2022-04-14 17:48:19,465 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, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-14 17:48:19,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2022-04-14 17:48:19,482 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 65 transitions. [2022-04-14 17:48:19,555 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 65 edges. 65 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 17:48:19,561 INFO L225 Difference]: With dead ends: 50 [2022-04-14 17:48:19,561 INFO L226 Difference]: Without dead ends: 25 [2022-04-14 17:48:19,563 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-14 17:48:19,566 INFO L913 BasicCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 17:48:19,566 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 17:48:19,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-04-14 17:48:19,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-04-14 17:48:19,591 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 17:48:19,591 INFO L82 GeneralOperation]: Start isEquivalent. First operand 25 states. Second operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 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) [2022-04-14 17:48:19,592 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 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) [2022-04-14 17:48:19,592 INFO L87 Difference]: Start difference. First operand 25 states. Second operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 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) [2022-04-14 17:48:19,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 17:48:19,595 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2022-04-14 17:48:19,595 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-04-14 17:48:19,596 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 17:48:19,596 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 17:48:19,596 INFO L74 IsIncluded]: Start isIncluded. First operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 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 25 states. [2022-04-14 17:48:19,596 INFO L87 Difference]: Start difference. First operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 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 25 states. [2022-04-14 17:48:19,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 17:48:19,599 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2022-04-14 17:48:19,599 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-04-14 17:48:19,599 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 17:48:19,599 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 17:48:19,600 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 17:48:19,600 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 17:48:19,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 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) [2022-04-14 17:48:19,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-04-14 17:48:19,603 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 17 [2022-04-14 17:48:19,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 17:48:19,603 INFO L478 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-04-14 17:48:19,603 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, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-14 17:48:19,604 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-04-14 17:48:19,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-14 17:48:19,604 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 17:48:19,604 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 17:48:19,605 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-14 17:48:19,605 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 17:48:19,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 17:48:19,606 INFO L85 PathProgramCache]: Analyzing trace with hash -119968982, now seen corresponding path program 1 times [2022-04-14 17:48:19,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 17:48:19,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024979179] [2022-04-14 17:48:19,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 17:48:19,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 17:48:19,623 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-14 17:48:19,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1121039528] [2022-04-14 17:48:19,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 17:48:19,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-14 17:48:19,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-14 17:48:19,625 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) [2022-04-14 17:48:19,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-14 17:48:19,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 17:48:19,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-14 17:48:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 17:48:19,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-14 17:48:19,816 INFO L272 TraceCheckUtils]: 0: Hoare triple {196#true} call ULTIMATE.init(); {196#true} is VALID [2022-04-14 17:48:19,817 INFO L290 TraceCheckUtils]: 1: Hoare triple {196#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {204#(<= ~counter~0 0)} is VALID [2022-04-14 17:48:19,817 INFO L290 TraceCheckUtils]: 2: Hoare triple {204#(<= ~counter~0 0)} assume true; {204#(<= ~counter~0 0)} is VALID [2022-04-14 17:48:19,818 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {204#(<= ~counter~0 0)} {196#true} #61#return; {204#(<= ~counter~0 0)} is VALID [2022-04-14 17:48:19,818 INFO L272 TraceCheckUtils]: 4: Hoare triple {204#(<= ~counter~0 0)} call #t~ret6 := main(); {204#(<= ~counter~0 0)} is VALID [2022-04-14 17:48:19,818 INFO L290 TraceCheckUtils]: 5: Hoare triple {204#(<= ~counter~0 0)} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {204#(<= ~counter~0 0)} is VALID [2022-04-14 17:48:19,819 INFO L272 TraceCheckUtils]: 6: Hoare triple {204#(<= ~counter~0 0)} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {204#(<= ~counter~0 0)} is VALID [2022-04-14 17:48:19,819 INFO L290 TraceCheckUtils]: 7: Hoare triple {204#(<= ~counter~0 0)} ~cond := #in~cond; {204#(<= ~counter~0 0)} is VALID [2022-04-14 17:48:19,820 INFO L290 TraceCheckUtils]: 8: Hoare triple {204#(<= ~counter~0 0)} assume !(0 == ~cond); {204#(<= ~counter~0 0)} is VALID [2022-04-14 17:48:19,820 INFO L290 TraceCheckUtils]: 9: Hoare triple {204#(<= ~counter~0 0)} assume true; {204#(<= ~counter~0 0)} is VALID [2022-04-14 17:48:19,821 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {204#(<= ~counter~0 0)} {204#(<= ~counter~0 0)} #53#return; {204#(<= ~counter~0 0)} is VALID [2022-04-14 17:48:19,821 INFO L290 TraceCheckUtils]: 11: Hoare triple {204#(<= ~counter~0 0)} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {204#(<= ~counter~0 0)} is VALID [2022-04-14 17:48:19,821 INFO L290 TraceCheckUtils]: 12: Hoare triple {204#(<= ~counter~0 0)} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {238#(<= |main_#t~post5| 0)} is VALID [2022-04-14 17:48:19,822 INFO L290 TraceCheckUtils]: 13: Hoare triple {238#(<= |main_#t~post5| 0)} assume !(#t~post5 < 2);havoc #t~post5; {197#false} is VALID [2022-04-14 17:48:19,822 INFO L272 TraceCheckUtils]: 14: Hoare triple {197#false} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {197#false} is VALID [2022-04-14 17:48:19,822 INFO L290 TraceCheckUtils]: 15: Hoare triple {197#false} ~cond := #in~cond; {197#false} is VALID [2022-04-14 17:48:19,822 INFO L290 TraceCheckUtils]: 16: Hoare triple {197#false} assume 0 == ~cond; {197#false} is VALID [2022-04-14 17:48:19,822 INFO L290 TraceCheckUtils]: 17: Hoare triple {197#false} assume !false; {197#false} is VALID [2022-04-14 17:48:19,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 17:48:19,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-14 17:48:19,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 17:48:19,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024979179] [2022-04-14 17:48:19,823 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-14 17:48:19,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121039528] [2022-04-14 17:48:19,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121039528] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 17:48:19,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 17:48:19,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 17:48:19,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849965558] [2022-04-14 17:48:19,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 17:48:19,825 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, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-04-14 17:48:19,825 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 17:48:19,825 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, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 17:48:19,841 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 17:48:19,842 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 17:48:19,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 17:48:19,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 17:48:19,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 17:48:19,843 INFO L87 Difference]: Start difference. First operand 24 states and 27 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, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 17:48:19,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 17:48:19,901 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-04-14 17:48:19,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 17:48:19,902 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, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-04-14 17:48:19,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 17:48:19,902 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, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 17:48:19,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2022-04-14 17:48:19,904 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, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 17:48:19,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2022-04-14 17:48:19,905 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 38 transitions. [2022-04-14 17:48:19,935 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 17:48:19,936 INFO L225 Difference]: With dead ends: 34 [2022-04-14 17:48:19,936 INFO L226 Difference]: Without dead ends: 26 [2022-04-14 17:48:19,937 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 17:48:19,937 INFO L913 BasicCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 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 [2022-04-14 17:48:19,938 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 17:48:19,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-04-14 17:48:19,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-04-14 17:48:19,943 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 17:48:19,944 INFO L82 GeneralOperation]: Start isEquivalent. First operand 26 states. Second operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 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) [2022-04-14 17:48:19,944 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 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) [2022-04-14 17:48:19,944 INFO L87 Difference]: Start difference. First operand 26 states. Second operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 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) [2022-04-14 17:48:19,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 17:48:19,946 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-04-14 17:48:19,946 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-04-14 17:48:19,946 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 17:48:19,946 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 17:48:19,946 INFO L74 IsIncluded]: Start isIncluded. First operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 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. [2022-04-14 17:48:19,947 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 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. [2022-04-14 17:48:19,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 17:48:19,948 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-04-14 17:48:19,948 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-04-14 17:48:19,948 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 17:48:19,949 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 17:48:19,949 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 17:48:19,949 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 17:48:19,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 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) [2022-04-14 17:48:19,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-04-14 17:48:19,950 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 18 [2022-04-14 17:48:19,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 17:48:19,950 INFO L478 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-04-14 17:48:19,951 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, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-14 17:48:19,951 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-04-14 17:48:19,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-14 17:48:19,951 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 17:48:19,951 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 17:48:19,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-14 17:48:20,167 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 [2022-04-14 17:48:20,168 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 17:48:20,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 17:48:20,169 INFO L85 PathProgramCache]: Analyzing trace with hash -118181522, now seen corresponding path program 1 times [2022-04-14 17:48:20,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 17:48:20,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112355913] [2022-04-14 17:48:20,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 17:48:20,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 17:48:20,195 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-14 17:48:20,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [559891232] [2022-04-14 17:48:20,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 17:48:20,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-14 17:48:20,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-14 17:48:20,199 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) [2022-04-14 17:48:20,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-14 17:48:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 17:48:20,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-14 17:48:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 17:48:20,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-14 17:48:20,342 INFO L272 TraceCheckUtils]: 0: Hoare triple {392#true} call ULTIMATE.init(); {392#true} is VALID [2022-04-14 17:48:20,343 INFO L290 TraceCheckUtils]: 1: Hoare triple {392#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {392#true} is VALID [2022-04-14 17:48:20,343 INFO L290 TraceCheckUtils]: 2: Hoare triple {392#true} assume true; {392#true} is VALID [2022-04-14 17:48:20,343 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {392#true} {392#true} #61#return; {392#true} is VALID [2022-04-14 17:48:20,343 INFO L272 TraceCheckUtils]: 4: Hoare triple {392#true} call #t~ret6 := main(); {392#true} is VALID [2022-04-14 17:48:20,343 INFO L290 TraceCheckUtils]: 5: Hoare triple {392#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {392#true} is VALID [2022-04-14 17:48:20,343 INFO L272 TraceCheckUtils]: 6: Hoare triple {392#true} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {392#true} is VALID [2022-04-14 17:48:20,343 INFO L290 TraceCheckUtils]: 7: Hoare triple {392#true} ~cond := #in~cond; {392#true} is VALID [2022-04-14 17:48:20,343 INFO L290 TraceCheckUtils]: 8: Hoare triple {392#true} assume !(0 == ~cond); {392#true} is VALID [2022-04-14 17:48:20,344 INFO L290 TraceCheckUtils]: 9: Hoare triple {392#true} assume true; {392#true} is VALID [2022-04-14 17:48:20,344 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {392#true} {392#true} #53#return; {392#true} is VALID [2022-04-14 17:48:20,344 INFO L290 TraceCheckUtils]: 11: Hoare triple {392#true} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {430#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-14 17:48:20,345 INFO L290 TraceCheckUtils]: 12: Hoare triple {430#(and (= main_~x~0 0) (= main_~y~0 0))} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {430#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-14 17:48:20,345 INFO L290 TraceCheckUtils]: 13: Hoare triple {430#(and (= main_~x~0 0) (= main_~y~0 0))} assume !!(#t~post5 < 2);havoc #t~post5; {430#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-14 17:48:20,346 INFO L272 TraceCheckUtils]: 14: Hoare triple {430#(and (= main_~x~0 0) (= main_~y~0 0))} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {440#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-14 17:48:20,346 INFO L290 TraceCheckUtils]: 15: Hoare triple {440#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {444#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-14 17:48:20,347 INFO L290 TraceCheckUtils]: 16: Hoare triple {444#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {393#false} is VALID [2022-04-14 17:48:20,347 INFO L290 TraceCheckUtils]: 17: Hoare triple {393#false} assume !false; {393#false} is VALID [2022-04-14 17:48:20,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 17:48:20,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-14 17:48:20,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 17:48:20,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112355913] [2022-04-14 17:48:20,348 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-14 17:48:20,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559891232] [2022-04-14 17:48:20,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559891232] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 17:48:20,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 17:48:20,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-14 17:48:20,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270612493] [2022-04-14 17:48:20,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 17:48:20,349 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-04-14 17:48:20,349 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 17:48:20,349 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-14 17:48:20,361 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 17:48:20,361 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-14 17:48:20,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 17:48:20,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-14 17:48:20,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-14 17:48:20,362 INFO L87 Difference]: Start difference. First operand 26 states and 29 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-14 17:48:20,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 17:48:20,543 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-04-14 17:48:20,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-14 17:48:20,543 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-04-14 17:48:20,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 17:48:20,544 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-14 17:48:20,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 41 transitions. [2022-04-14 17:48:20,545 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-14 17:48:20,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 41 transitions. [2022-04-14 17:48:20,546 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 41 transitions. [2022-04-14 17:48:20,582 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 17:48:20,583 INFO L225 Difference]: With dead ends: 36 [2022-04-14 17:48:20,583 INFO L226 Difference]: Without dead ends: 32 [2022-04-14 17:48:20,583 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-14 17:48:20,584 INFO L913 BasicCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 17:48:20,584 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 87 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 17:48:20,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-04-14 17:48:20,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-04-14 17:48:20,591 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 17:48:20,591 INFO L82 GeneralOperation]: Start isEquivalent. First operand 32 states. Second operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-14 17:48:20,591 INFO L74 IsIncluded]: Start isIncluded. First operand 32 states. Second operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-14 17:48:20,592 INFO L87 Difference]: Start difference. First operand 32 states. Second operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-14 17:48:20,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 17:48:20,593 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-04-14 17:48:20,593 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-04-14 17:48:20,593 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 17:48:20,593 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 17:48:20,594 INFO L74 IsIncluded]: Start isIncluded. First operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 7 states have call successors, (7), 5 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 32 states. [2022-04-14 17:48:20,594 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 7 states have call successors, (7), 5 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 32 states. [2022-04-14 17:48:20,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 17:48:20,595 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-04-14 17:48:20,595 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-04-14 17:48:20,596 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 17:48:20,596 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 17:48:20,596 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 17:48:20,596 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 17:48:20,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-14 17:48:20,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-04-14 17:48:20,597 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 18 [2022-04-14 17:48:20,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 17:48:20,597 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-04-14 17:48:20,598 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-14 17:48:20,598 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-04-14 17:48:20,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-04-14 17:48:20,598 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 17:48:20,598 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 17:48:20,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-14 17:48:20,815 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 [2022-04-14 17:48:20,815 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 17:48:20,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 17:48:20,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1364840471, now seen corresponding path program 1 times [2022-04-14 17:48:20,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 17:48:20,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767507896] [2022-04-14 17:48:20,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 17:48:20,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 17:48:20,833 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-14 17:48:20,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709023841] [2022-04-14 17:48:20,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 17:48:20,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-14 17:48:20,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-14 17:48:20,834 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) [2022-04-14 17:48:20,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-14 17:48:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 17:48:20,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-14 17:48:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 17:48:20,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-14 17:48:21,058 INFO L272 TraceCheckUtils]: 0: Hoare triple {614#true} call ULTIMATE.init(); {614#true} is VALID [2022-04-14 17:48:21,059 INFO L290 TraceCheckUtils]: 1: Hoare triple {614#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {622#(<= ~counter~0 0)} is VALID [2022-04-14 17:48:21,060 INFO L290 TraceCheckUtils]: 2: Hoare triple {622#(<= ~counter~0 0)} assume true; {622#(<= ~counter~0 0)} is VALID [2022-04-14 17:48:21,060 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {622#(<= ~counter~0 0)} {614#true} #61#return; {622#(<= ~counter~0 0)} is VALID [2022-04-14 17:48:21,061 INFO L272 TraceCheckUtils]: 4: Hoare triple {622#(<= ~counter~0 0)} call #t~ret6 := main(); {622#(<= ~counter~0 0)} is VALID [2022-04-14 17:48:21,061 INFO L290 TraceCheckUtils]: 5: Hoare triple {622#(<= ~counter~0 0)} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {622#(<= ~counter~0 0)} is VALID [2022-04-14 17:48:21,062 INFO L272 TraceCheckUtils]: 6: Hoare triple {622#(<= ~counter~0 0)} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {622#(<= ~counter~0 0)} is VALID [2022-04-14 17:48:21,062 INFO L290 TraceCheckUtils]: 7: Hoare triple {622#(<= ~counter~0 0)} ~cond := #in~cond; {622#(<= ~counter~0 0)} is VALID [2022-04-14 17:48:21,063 INFO L290 TraceCheckUtils]: 8: Hoare triple {622#(<= ~counter~0 0)} assume !(0 == ~cond); {622#(<= ~counter~0 0)} is VALID [2022-04-14 17:48:21,063 INFO L290 TraceCheckUtils]: 9: Hoare triple {622#(<= ~counter~0 0)} assume true; {622#(<= ~counter~0 0)} is VALID [2022-04-14 17:48:21,064 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {622#(<= ~counter~0 0)} {622#(<= ~counter~0 0)} #53#return; {622#(<= ~counter~0 0)} is VALID [2022-04-14 17:48:21,064 INFO L290 TraceCheckUtils]: 11: Hoare triple {622#(<= ~counter~0 0)} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {622#(<= ~counter~0 0)} is VALID [2022-04-14 17:48:21,065 INFO L290 TraceCheckUtils]: 12: Hoare triple {622#(<= ~counter~0 0)} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {656#(<= ~counter~0 1)} is VALID [2022-04-14 17:48:21,066 INFO L290 TraceCheckUtils]: 13: Hoare triple {656#(<= ~counter~0 1)} assume !!(#t~post5 < 2);havoc #t~post5; {656#(<= ~counter~0 1)} is VALID [2022-04-14 17:48:21,067 INFO L272 TraceCheckUtils]: 14: Hoare triple {656#(<= ~counter~0 1)} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {656#(<= ~counter~0 1)} is VALID [2022-04-14 17:48:21,070 INFO L290 TraceCheckUtils]: 15: Hoare triple {656#(<= ~counter~0 1)} ~cond := #in~cond; {656#(<= ~counter~0 1)} is VALID [2022-04-14 17:48:21,071 INFO L290 TraceCheckUtils]: 16: Hoare triple {656#(<= ~counter~0 1)} assume !(0 == ~cond); {656#(<= ~counter~0 1)} is VALID [2022-04-14 17:48:21,075 INFO L290 TraceCheckUtils]: 17: Hoare triple {656#(<= ~counter~0 1)} assume true; {656#(<= ~counter~0 1)} is VALID [2022-04-14 17:48:21,076 INFO L284 TraceCheckUtils]: 18: Hoare quadruple {656#(<= ~counter~0 1)} {656#(<= ~counter~0 1)} #55#return; {656#(<= ~counter~0 1)} is VALID [2022-04-14 17:48:21,076 INFO L290 TraceCheckUtils]: 19: Hoare triple {656#(<= ~counter~0 1)} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~x~0; {656#(<= ~counter~0 1)} is VALID [2022-04-14 17:48:21,077 INFO L290 TraceCheckUtils]: 20: Hoare triple {656#(<= ~counter~0 1)} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {681#(<= |main_#t~post5| 1)} is VALID [2022-04-14 17:48:21,077 INFO L290 TraceCheckUtils]: 21: Hoare triple {681#(<= |main_#t~post5| 1)} assume !(#t~post5 < 2);havoc #t~post5; {615#false} is VALID [2022-04-14 17:48:21,077 INFO L272 TraceCheckUtils]: 22: Hoare triple {615#false} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {615#false} is VALID [2022-04-14 17:48:21,077 INFO L290 TraceCheckUtils]: 23: Hoare triple {615#false} ~cond := #in~cond; {615#false} is VALID [2022-04-14 17:48:21,078 INFO L290 TraceCheckUtils]: 24: Hoare triple {615#false} assume 0 == ~cond; {615#false} is VALID [2022-04-14 17:48:21,078 INFO L290 TraceCheckUtils]: 25: Hoare triple {615#false} assume !false; {615#false} is VALID [2022-04-14 17:48:21,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 17:48:21,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-14 17:48:21,253 INFO L290 TraceCheckUtils]: 25: Hoare triple {615#false} assume !false; {615#false} is VALID [2022-04-14 17:48:21,254 INFO L290 TraceCheckUtils]: 24: Hoare triple {615#false} assume 0 == ~cond; {615#false} is VALID [2022-04-14 17:48:21,254 INFO L290 TraceCheckUtils]: 23: Hoare triple {615#false} ~cond := #in~cond; {615#false} is VALID [2022-04-14 17:48:21,254 INFO L272 TraceCheckUtils]: 22: Hoare triple {615#false} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {615#false} is VALID [2022-04-14 17:48:21,256 INFO L290 TraceCheckUtils]: 21: Hoare triple {681#(<= |main_#t~post5| 1)} assume !(#t~post5 < 2);havoc #t~post5; {615#false} is VALID [2022-04-14 17:48:21,256 INFO L290 TraceCheckUtils]: 20: Hoare triple {656#(<= ~counter~0 1)} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {681#(<= |main_#t~post5| 1)} is VALID [2022-04-14 17:48:21,257 INFO L290 TraceCheckUtils]: 19: Hoare triple {656#(<= ~counter~0 1)} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~x~0; {656#(<= ~counter~0 1)} is VALID [2022-04-14 17:48:21,257 INFO L284 TraceCheckUtils]: 18: Hoare quadruple {614#true} {656#(<= ~counter~0 1)} #55#return; {656#(<= ~counter~0 1)} is VALID [2022-04-14 17:48:21,257 INFO L290 TraceCheckUtils]: 17: Hoare triple {614#true} assume true; {614#true} is VALID [2022-04-14 17:48:21,257 INFO L290 TraceCheckUtils]: 16: Hoare triple {614#true} assume !(0 == ~cond); {614#true} is VALID [2022-04-14 17:48:21,258 INFO L290 TraceCheckUtils]: 15: Hoare triple {614#true} ~cond := #in~cond; {614#true} is VALID [2022-04-14 17:48:21,258 INFO L272 TraceCheckUtils]: 14: Hoare triple {656#(<= ~counter~0 1)} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {614#true} is VALID [2022-04-14 17:48:21,258 INFO L290 TraceCheckUtils]: 13: Hoare triple {656#(<= ~counter~0 1)} assume !!(#t~post5 < 2);havoc #t~post5; {656#(<= ~counter~0 1)} is VALID [2022-04-14 17:48:21,259 INFO L290 TraceCheckUtils]: 12: Hoare triple {622#(<= ~counter~0 0)} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {656#(<= ~counter~0 1)} is VALID [2022-04-14 17:48:21,259 INFO L290 TraceCheckUtils]: 11: Hoare triple {622#(<= ~counter~0 0)} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {622#(<= ~counter~0 0)} is VALID [2022-04-14 17:48:21,260 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {614#true} {622#(<= ~counter~0 0)} #53#return; {622#(<= ~counter~0 0)} is VALID [2022-04-14 17:48:21,260 INFO L290 TraceCheckUtils]: 9: Hoare triple {614#true} assume true; {614#true} is VALID [2022-04-14 17:48:21,260 INFO L290 TraceCheckUtils]: 8: Hoare triple {614#true} assume !(0 == ~cond); {614#true} is VALID [2022-04-14 17:48:21,260 INFO L290 TraceCheckUtils]: 7: Hoare triple {614#true} ~cond := #in~cond; {614#true} is VALID [2022-04-14 17:48:21,260 INFO L272 TraceCheckUtils]: 6: Hoare triple {622#(<= ~counter~0 0)} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {614#true} is VALID [2022-04-14 17:48:21,262 INFO L290 TraceCheckUtils]: 5: Hoare triple {622#(<= ~counter~0 0)} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {622#(<= ~counter~0 0)} is VALID [2022-04-14 17:48:21,262 INFO L272 TraceCheckUtils]: 4: Hoare triple {622#(<= ~counter~0 0)} call #t~ret6 := main(); {622#(<= ~counter~0 0)} is VALID [2022-04-14 17:48:21,263 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {622#(<= ~counter~0 0)} {614#true} #61#return; {622#(<= ~counter~0 0)} is VALID [2022-04-14 17:48:21,263 INFO L290 TraceCheckUtils]: 2: Hoare triple {622#(<= ~counter~0 0)} assume true; {622#(<= ~counter~0 0)} is VALID [2022-04-14 17:48:21,264 INFO L290 TraceCheckUtils]: 1: Hoare triple {614#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {622#(<= ~counter~0 0)} is VALID [2022-04-14 17:48:21,264 INFO L272 TraceCheckUtils]: 0: Hoare triple {614#true} call ULTIMATE.init(); {614#true} is VALID [2022-04-14 17:48:21,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 17:48:21,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 17:48:21,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767507896] [2022-04-14 17:48:21,265 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-14 17:48:21,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709023841] [2022-04-14 17:48:21,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709023841] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-14 17:48:21,265 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-14 17:48:21,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2022-04-14 17:48:21,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300887671] [2022-04-14 17:48:21,265 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-14 17:48:21,266 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 26 [2022-04-14 17:48:21,266 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 17:48:21,266 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-14 17:48:21,302 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 17:48:21,303 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-14 17:48:21,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 17:48:21,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-14 17:48:21,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-14 17:48:21,304 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-14 17:48:21,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 17:48:21,388 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2022-04-14 17:48:21,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-14 17:48:21,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 26 [2022-04-14 17:48:21,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 17:48:21,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-14 17:48:21,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 46 transitions. [2022-04-14 17:48:21,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-14 17:48:21,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 46 transitions. [2022-04-14 17:48:21,392 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 46 transitions. [2022-04-14 17:48:21,428 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 46 edges. 46 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 17:48:21,429 INFO L225 Difference]: With dead ends: 42 [2022-04-14 17:48:21,429 INFO L226 Difference]: Without dead ends: 34 [2022-04-14 17:48:21,430 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-14 17:48:21,430 INFO L913 BasicCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 17:48:21,431 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 69 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 17:48:21,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-04-14 17:48:21,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-04-14 17:48:21,439 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 17:48:21,439 INFO L82 GeneralOperation]: Start isEquivalent. First operand 34 states. Second operand has 34 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-14 17:48:21,439 INFO L74 IsIncluded]: Start isIncluded. First operand 34 states. Second operand has 34 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-14 17:48:21,440 INFO L87 Difference]: Start difference. First operand 34 states. Second operand has 34 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-14 17:48:21,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 17:48:21,441 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2022-04-14 17:48:21,441 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-04-14 17:48:21,442 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 17:48:21,442 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 17:48:21,442 INFO L74 IsIncluded]: Start isIncluded. First operand has 34 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 7 states have call successors, (7), 5 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 34 states. [2022-04-14 17:48:21,442 INFO L87 Difference]: Start difference. First operand has 34 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 7 states have call successors, (7), 5 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 34 states. [2022-04-14 17:48:21,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 17:48:21,444 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2022-04-14 17:48:21,444 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-04-14 17:48:21,444 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 17:48:21,444 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 17:48:21,444 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 17:48:21,444 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 17:48:21,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-14 17:48:21,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-04-14 17:48:21,446 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 26 [2022-04-14 17:48:21,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 17:48:21,446 INFO L478 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-04-14 17:48:21,446 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-14 17:48:21,446 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-04-14 17:48:21,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-04-14 17:48:21,447 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 17:48:21,447 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] [2022-04-14 17:48:21,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-14 17:48:21,663 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 [2022-04-14 17:48:21,663 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 17:48:21,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 17:48:21,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1363053011, now seen corresponding path program 1 times [2022-04-14 17:48:21,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 17:48:21,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443680849] [2022-04-14 17:48:21,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 17:48:21,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 17:48:21,676 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-14 17:48:21,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [255003088] [2022-04-14 17:48:21,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 17:48:21,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-14 17:48:21,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-14 17:48:21,686 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) [2022-04-14 17:48:21,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-14 17:48:21,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 17:48:21,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-14 17:48:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 17:48:21,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-14 17:48:21,912 INFO L272 TraceCheckUtils]: 0: Hoare triple {953#true} call ULTIMATE.init(); {953#true} is VALID [2022-04-14 17:48:21,913 INFO L290 TraceCheckUtils]: 1: Hoare triple {953#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {953#true} is VALID [2022-04-14 17:48:21,913 INFO L290 TraceCheckUtils]: 2: Hoare triple {953#true} assume true; {953#true} is VALID [2022-04-14 17:48:21,913 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {953#true} {953#true} #61#return; {953#true} is VALID [2022-04-14 17:48:21,913 INFO L272 TraceCheckUtils]: 4: Hoare triple {953#true} call #t~ret6 := main(); {953#true} is VALID [2022-04-14 17:48:21,913 INFO L290 TraceCheckUtils]: 5: Hoare triple {953#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {953#true} is VALID [2022-04-14 17:48:21,913 INFO L272 TraceCheckUtils]: 6: Hoare triple {953#true} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {953#true} is VALID [2022-04-14 17:48:21,913 INFO L290 TraceCheckUtils]: 7: Hoare triple {953#true} ~cond := #in~cond; {953#true} is VALID [2022-04-14 17:48:21,914 INFO L290 TraceCheckUtils]: 8: Hoare triple {953#true} assume !(0 == ~cond); {953#true} is VALID [2022-04-14 17:48:21,914 INFO L290 TraceCheckUtils]: 9: Hoare triple {953#true} assume true; {953#true} is VALID [2022-04-14 17:48:21,914 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {953#true} {953#true} #53#return; {953#true} is VALID [2022-04-14 17:48:21,917 INFO L290 TraceCheckUtils]: 11: Hoare triple {953#true} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {991#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-14 17:48:21,921 INFO L290 TraceCheckUtils]: 12: Hoare triple {991#(and (= main_~x~0 0) (= main_~y~0 0))} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {991#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-14 17:48:21,926 INFO L290 TraceCheckUtils]: 13: Hoare triple {991#(and (= main_~x~0 0) (= main_~y~0 0))} assume !!(#t~post5 < 2);havoc #t~post5; {991#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-14 17:48:21,926 INFO L272 TraceCheckUtils]: 14: Hoare triple {991#(and (= main_~x~0 0) (= main_~y~0 0))} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {953#true} is VALID [2022-04-14 17:48:21,926 INFO L290 TraceCheckUtils]: 15: Hoare triple {953#true} ~cond := #in~cond; {953#true} is VALID [2022-04-14 17:48:21,926 INFO L290 TraceCheckUtils]: 16: Hoare triple {953#true} assume !(0 == ~cond); {953#true} is VALID [2022-04-14 17:48:21,926 INFO L290 TraceCheckUtils]: 17: Hoare triple {953#true} assume true; {953#true} is VALID [2022-04-14 17:48:21,938 INFO L284 TraceCheckUtils]: 18: Hoare quadruple {953#true} {991#(and (= main_~x~0 0) (= main_~y~0 0))} #55#return; {991#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-14 17:48:21,939 INFO L290 TraceCheckUtils]: 19: Hoare triple {991#(and (= main_~x~0 0) (= main_~y~0 0))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~x~0; {1016#(and (= (+ (- 1) main_~y~0) 0) (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) 0))} is VALID [2022-04-14 17:48:21,939 INFO L290 TraceCheckUtils]: 20: Hoare triple {1016#(and (= (+ (- 1) main_~y~0) 0) (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) 0))} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {1016#(and (= (+ (- 1) main_~y~0) 0) (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) 0))} is VALID [2022-04-14 17:48:21,940 INFO L290 TraceCheckUtils]: 21: Hoare triple {1016#(and (= (+ (- 1) main_~y~0) 0) (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) 0))} assume !!(#t~post5 < 2);havoc #t~post5; {1016#(and (= (+ (- 1) main_~y~0) 0) (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) 0))} is VALID [2022-04-14 17:48:21,941 INFO L272 TraceCheckUtils]: 22: Hoare triple {1016#(and (= (+ (- 1) main_~y~0) 0) (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) 0))} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {1026#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-14 17:48:21,941 INFO L290 TraceCheckUtils]: 23: Hoare triple {1026#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {1030#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-14 17:48:21,941 INFO L290 TraceCheckUtils]: 24: Hoare triple {1030#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {954#false} is VALID [2022-04-14 17:48:21,941 INFO L290 TraceCheckUtils]: 25: Hoare triple {954#false} assume !false; {954#false} is VALID [2022-04-14 17:48:21,942 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 17:48:21,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-14 17:48:22,250 INFO L290 TraceCheckUtils]: 25: Hoare triple {954#false} assume !false; {954#false} is VALID [2022-04-14 17:48:22,251 INFO L290 TraceCheckUtils]: 24: Hoare triple {1030#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {954#false} is VALID [2022-04-14 17:48:22,251 INFO L290 TraceCheckUtils]: 23: Hoare triple {1026#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {1030#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-14 17:48:22,252 INFO L272 TraceCheckUtils]: 22: Hoare triple {1046#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {1026#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-14 17:48:22,253 INFO L290 TraceCheckUtils]: 21: Hoare triple {1046#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} assume !!(#t~post5 < 2);havoc #t~post5; {1046#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} is VALID [2022-04-14 17:48:22,253 INFO L290 TraceCheckUtils]: 20: Hoare triple {1046#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {1046#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} is VALID [2022-04-14 17:48:22,367 INFO L290 TraceCheckUtils]: 19: Hoare triple {1046#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~x~0; {1046#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} is VALID [2022-04-14 17:48:22,368 INFO L284 TraceCheckUtils]: 18: Hoare quadruple {953#true} {1046#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} #55#return; {1046#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} is VALID [2022-04-14 17:48:22,368 INFO L290 TraceCheckUtils]: 17: Hoare triple {953#true} assume true; {953#true} is VALID [2022-04-14 17:48:22,368 INFO L290 TraceCheckUtils]: 16: Hoare triple {953#true} assume !(0 == ~cond); {953#true} is VALID [2022-04-14 17:48:22,369 INFO L290 TraceCheckUtils]: 15: Hoare triple {953#true} ~cond := #in~cond; {953#true} is VALID [2022-04-14 17:48:22,369 INFO L272 TraceCheckUtils]: 14: Hoare triple {1046#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {953#true} is VALID [2022-04-14 17:48:22,369 INFO L290 TraceCheckUtils]: 13: Hoare triple {1046#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} assume !!(#t~post5 < 2);havoc #t~post5; {1046#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} is VALID [2022-04-14 17:48:22,370 INFO L290 TraceCheckUtils]: 12: Hoare triple {1046#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {1046#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} is VALID [2022-04-14 17:48:22,370 INFO L290 TraceCheckUtils]: 11: Hoare triple {953#true} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {1046#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} is VALID [2022-04-14 17:48:22,370 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {953#true} {953#true} #53#return; {953#true} is VALID [2022-04-14 17:48:22,370 INFO L290 TraceCheckUtils]: 9: Hoare triple {953#true} assume true; {953#true} is VALID [2022-04-14 17:48:22,370 INFO L290 TraceCheckUtils]: 8: Hoare triple {953#true} assume !(0 == ~cond); {953#true} is VALID [2022-04-14 17:48:22,370 INFO L290 TraceCheckUtils]: 7: Hoare triple {953#true} ~cond := #in~cond; {953#true} is VALID [2022-04-14 17:48:22,370 INFO L272 TraceCheckUtils]: 6: Hoare triple {953#true} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {953#true} is VALID [2022-04-14 17:48:22,371 INFO L290 TraceCheckUtils]: 5: Hoare triple {953#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {953#true} is VALID [2022-04-14 17:48:22,371 INFO L272 TraceCheckUtils]: 4: Hoare triple {953#true} call #t~ret6 := main(); {953#true} is VALID [2022-04-14 17:48:22,371 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {953#true} {953#true} #61#return; {953#true} is VALID [2022-04-14 17:48:22,371 INFO L290 TraceCheckUtils]: 2: Hoare triple {953#true} assume true; {953#true} is VALID [2022-04-14 17:48:22,371 INFO L290 TraceCheckUtils]: 1: Hoare triple {953#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {953#true} is VALID [2022-04-14 17:48:22,371 INFO L272 TraceCheckUtils]: 0: Hoare triple {953#true} call ULTIMATE.init(); {953#true} is VALID [2022-04-14 17:48:22,371 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-14 17:48:22,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 17:48:22,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443680849] [2022-04-14 17:48:22,372 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-14 17:48:22,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255003088] [2022-04-14 17:48:22,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255003088] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-14 17:48:22,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-14 17:48:22,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-04-14 17:48:22,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353098967] [2022-04-14 17:48:22,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 17:48:22,373 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2022-04-14 17:48:22,373 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 17:48:22,373 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-14 17:48:22,439 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 17:48:22,439 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-14 17:48:22,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 17:48:22,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-14 17:48:22,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-14 17:48:22,442 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-14 17:48:22,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 17:48:22,577 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2022-04-14 17:48:22,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-14 17:48:22,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2022-04-14 17:48:22,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 17:48:22,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-14 17:48:22,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 32 transitions. [2022-04-14 17:48:22,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-14 17:48:22,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 32 transitions. [2022-04-14 17:48:22,585 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 32 transitions. [2022-04-14 17:48:22,724 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 17:48:22,725 INFO L225 Difference]: With dead ends: 40 [2022-04-14 17:48:22,725 INFO L226 Difference]: Without dead ends: 36 [2022-04-14 17:48:22,726 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-14 17:48:22,726 INFO L913 BasicCegarLoop]: 22 mSDtfsCounter, 7 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 17:48:22,727 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 73 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 17:48:22,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-04-14 17:48:22,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-04-14 17:48:22,736 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 17:48:22,736 INFO L82 GeneralOperation]: Start isEquivalent. First operand 36 states. Second operand has 36 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 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) [2022-04-14 17:48:22,736 INFO L74 IsIncluded]: Start isIncluded. First operand 36 states. Second operand has 36 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 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) [2022-04-14 17:48:22,736 INFO L87 Difference]: Start difference. First operand 36 states. Second operand has 36 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 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) [2022-04-14 17:48:22,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 17:48:22,737 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2022-04-14 17:48:22,738 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2022-04-14 17:48:22,738 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 17:48:22,738 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 17:48:22,738 INFO L74 IsIncluded]: Start isIncluded. First operand has 36 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 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 36 states. [2022-04-14 17:48:22,738 INFO L87 Difference]: Start difference. First operand has 36 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 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 36 states. [2022-04-14 17:48:22,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 17:48:22,739 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2022-04-14 17:48:22,739 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2022-04-14 17:48:22,740 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 17:48:22,740 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 17:48:22,740 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 17:48:22,740 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 17:48:22,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 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) [2022-04-14 17:48:22,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2022-04-14 17:48:22,741 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 26 [2022-04-14 17:48:22,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 17:48:22,741 INFO L478 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2022-04-14 17:48:22,741 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-14 17:48:22,742 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2022-04-14 17:48:22,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-04-14 17:48:22,742 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 17:48:22,742 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 17:48:22,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-04-14 17:48:22,946 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 [2022-04-14 17:48:22,947 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 17:48:22,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 17:48:22,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1559147673, now seen corresponding path program 1 times [2022-04-14 17:48:22,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 17:48:22,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249794751] [2022-04-14 17:48:22,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 17:48:22,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 17:48:22,959 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-14 17:48:22,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1331038836] [2022-04-14 17:48:22,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 17:48:22,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-14 17:48:22,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-14 17:48:22,960 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) [2022-04-14 17:48:22,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-14 17:48:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 17:48:23,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-14 17:48:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 17:48:23,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-14 17:48:23,310 INFO L272 TraceCheckUtils]: 0: Hoare triple {1297#true} call ULTIMATE.init(); {1297#true} is VALID [2022-04-14 17:48:23,310 INFO L290 TraceCheckUtils]: 1: Hoare triple {1297#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {1297#true} is VALID [2022-04-14 17:48:23,310 INFO L290 TraceCheckUtils]: 2: Hoare triple {1297#true} assume true; {1297#true} is VALID [2022-04-14 17:48:23,311 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1297#true} {1297#true} #61#return; {1297#true} is VALID [2022-04-14 17:48:23,311 INFO L272 TraceCheckUtils]: 4: Hoare triple {1297#true} call #t~ret6 := main(); {1297#true} is VALID [2022-04-14 17:48:23,311 INFO L290 TraceCheckUtils]: 5: Hoare triple {1297#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {1297#true} is VALID [2022-04-14 17:48:23,311 INFO L272 TraceCheckUtils]: 6: Hoare triple {1297#true} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {1297#true} is VALID [2022-04-14 17:48:23,311 INFO L290 TraceCheckUtils]: 7: Hoare triple {1297#true} ~cond := #in~cond; {1297#true} is VALID [2022-04-14 17:48:23,311 INFO L290 TraceCheckUtils]: 8: Hoare triple {1297#true} assume !(0 == ~cond); {1297#true} is VALID [2022-04-14 17:48:23,311 INFO L290 TraceCheckUtils]: 9: Hoare triple {1297#true} assume true; {1297#true} is VALID [2022-04-14 17:48:23,311 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {1297#true} {1297#true} #53#return; {1297#true} is VALID [2022-04-14 17:48:23,312 INFO L290 TraceCheckUtils]: 11: Hoare triple {1297#true} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {1335#(and (= main_~c~0 0) (= main_~y~0 0))} is VALID [2022-04-14 17:48:23,312 INFO L290 TraceCheckUtils]: 12: Hoare triple {1335#(and (= main_~c~0 0) (= main_~y~0 0))} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {1335#(and (= main_~c~0 0) (= main_~y~0 0))} is VALID [2022-04-14 17:48:23,312 INFO L290 TraceCheckUtils]: 13: Hoare triple {1335#(and (= main_~c~0 0) (= main_~y~0 0))} assume !!(#t~post5 < 2);havoc #t~post5; {1335#(and (= main_~c~0 0) (= main_~y~0 0))} is VALID [2022-04-14 17:48:23,313 INFO L272 TraceCheckUtils]: 14: Hoare triple {1335#(and (= main_~c~0 0) (= main_~y~0 0))} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {1297#true} is VALID [2022-04-14 17:48:23,313 INFO L290 TraceCheckUtils]: 15: Hoare triple {1297#true} ~cond := #in~cond; {1297#true} is VALID [2022-04-14 17:48:23,313 INFO L290 TraceCheckUtils]: 16: Hoare triple {1297#true} assume !(0 == ~cond); {1297#true} is VALID [2022-04-14 17:48:23,313 INFO L290 TraceCheckUtils]: 17: Hoare triple {1297#true} assume true; {1297#true} is VALID [2022-04-14 17:48:23,314 INFO L284 TraceCheckUtils]: 18: Hoare quadruple {1297#true} {1335#(and (= main_~c~0 0) (= main_~y~0 0))} #55#return; {1335#(and (= main_~c~0 0) (= main_~y~0 0))} is VALID [2022-04-14 17:48:23,314 INFO L290 TraceCheckUtils]: 19: Hoare triple {1335#(and (= main_~c~0 0) (= main_~y~0 0))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~x~0; {1360#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} is VALID [2022-04-14 17:48:23,314 INFO L290 TraceCheckUtils]: 20: Hoare triple {1360#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {1360#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} is VALID [2022-04-14 17:48:23,315 INFO L290 TraceCheckUtils]: 21: Hoare triple {1360#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} assume !!(#t~post5 < 2);havoc #t~post5; {1360#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} is VALID [2022-04-14 17:48:23,315 INFO L272 TraceCheckUtils]: 22: Hoare triple {1360#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {1297#true} is VALID [2022-04-14 17:48:23,315 INFO L290 TraceCheckUtils]: 23: Hoare triple {1297#true} ~cond := #in~cond; {1297#true} is VALID [2022-04-14 17:48:23,315 INFO L290 TraceCheckUtils]: 24: Hoare triple {1297#true} assume !(0 == ~cond); {1297#true} is VALID [2022-04-14 17:48:23,315 INFO L290 TraceCheckUtils]: 25: Hoare triple {1297#true} assume true; {1297#true} is VALID [2022-04-14 17:48:23,318 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {1297#true} {1360#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} #55#return; {1360#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} is VALID [2022-04-14 17:48:23,319 INFO L290 TraceCheckUtils]: 27: Hoare triple {1360#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} assume !(~c~0 < ~k~0); {1385#(and (= (+ (- 1) main_~y~0) 0) (<= main_~k~0 1) (< 0 main_~k~0))} is VALID [2022-04-14 17:48:23,319 INFO L272 TraceCheckUtils]: 28: Hoare triple {1385#(and (= (+ (- 1) main_~y~0) 0) (<= main_~k~0 1) (< 0 main_~k~0))} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {1297#true} is VALID [2022-04-14 17:48:23,319 INFO L290 TraceCheckUtils]: 29: Hoare triple {1297#true} ~cond := #in~cond; {1297#true} is VALID [2022-04-14 17:48:23,319 INFO L290 TraceCheckUtils]: 30: Hoare triple {1297#true} assume !(0 == ~cond); {1297#true} is VALID [2022-04-14 17:48:23,319 INFO L290 TraceCheckUtils]: 31: Hoare triple {1297#true} assume true; {1297#true} is VALID [2022-04-14 17:48:23,319 INFO L284 TraceCheckUtils]: 32: Hoare quadruple {1297#true} {1385#(and (= (+ (- 1) main_~y~0) 0) (<= main_~k~0 1) (< 0 main_~k~0))} #57#return; {1385#(and (= (+ (- 1) main_~y~0) 0) (<= main_~k~0 1) (< 0 main_~k~0))} is VALID [2022-04-14 17:48:23,320 INFO L272 TraceCheckUtils]: 33: Hoare triple {1385#(and (= (+ (- 1) main_~y~0) 0) (<= main_~k~0 1) (< 0 main_~k~0))} call __VERIFIER_assert((if ~k~0 * ~y~0 == ~y~0 * ~y~0 then 1 else 0)); {1404#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-14 17:48:23,320 INFO L290 TraceCheckUtils]: 34: Hoare triple {1404#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {1408#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-14 17:48:23,324 INFO L290 TraceCheckUtils]: 35: Hoare triple {1408#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {1298#false} is VALID [2022-04-14 17:48:23,324 INFO L290 TraceCheckUtils]: 36: Hoare triple {1298#false} assume !false; {1298#false} is VALID [2022-04-14 17:48:23,324 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-14 17:48:23,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-14 17:48:23,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 17:48:23,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249794751] [2022-04-14 17:48:23,621 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-14 17:48:23,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331038836] [2022-04-14 17:48:23,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331038836] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-14 17:48:23,621 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-14 17:48:23,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-04-14 17:48:23,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219698841] [2022-04-14 17:48:23,622 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-14 17:48:23,622 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 37 [2022-04-14 17:48:23,622 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 17:48:23,623 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-04-14 17:48:23,648 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 17:48:23,648 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-14 17:48:23,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 17:48:23,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-14 17:48:23,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-04-14 17:48:23,649 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-04-14 17:48:23,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 17:48:23,879 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2022-04-14 17:48:23,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-14 17:48:23,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 37 [2022-04-14 17:48:23,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 17:48:23,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-04-14 17:48:23,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 44 transitions. [2022-04-14 17:48:23,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-04-14 17:48:23,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 44 transitions. [2022-04-14 17:48:23,883 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 44 transitions. [2022-04-14 17:48:23,921 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 44 edges. 44 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 17:48:23,922 INFO L225 Difference]: With dead ends: 44 [2022-04-14 17:48:23,922 INFO L226 Difference]: Without dead ends: 38 [2022-04-14 17:48:23,923 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-04-14 17:48:23,923 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-14 17:48:23,924 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 141 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-14 17:48:23,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-04-14 17:48:23,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-04-14 17:48:23,937 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 17:48:23,937 INFO L82 GeneralOperation]: Start isEquivalent. First operand 38 states. Second operand has 38 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-14 17:48:23,938 INFO L74 IsIncluded]: Start isIncluded. First operand 38 states. Second operand has 38 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-14 17:48:23,938 INFO L87 Difference]: Start difference. First operand 38 states. Second operand has 38 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-14 17:48:23,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 17:48:23,939 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2022-04-14 17:48:23,939 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2022-04-14 17:48:23,940 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 17:48:23,940 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 17:48:23,940 INFO L74 IsIncluded]: Start isIncluded. First operand has 38 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand 38 states. [2022-04-14 17:48:23,940 INFO L87 Difference]: Start difference. First operand has 38 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand 38 states. [2022-04-14 17:48:23,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 17:48:23,941 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2022-04-14 17:48:23,942 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2022-04-14 17:48:23,942 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 17:48:23,942 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 17:48:23,942 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 17:48:23,942 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 17:48:23,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-14 17:48:23,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2022-04-14 17:48:23,943 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 37 [2022-04-14 17:48:23,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 17:48:23,944 INFO L478 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2022-04-14 17:48:23,944 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-04-14 17:48:23,944 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2022-04-14 17:48:23,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-14 17:48:23,945 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 17:48:23,945 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 17:48:23,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-14 17:48:24,160 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 [2022-04-14 17:48:24,160 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 17:48:24,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 17:48:24,161 INFO L85 PathProgramCache]: Analyzing trace with hash -951509150, now seen corresponding path program 1 times [2022-04-14 17:48:24,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 17:48:24,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810524991] [2022-04-14 17:48:24,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 17:48:24,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 17:48:24,182 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-14 17:48:24,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339303625] [2022-04-14 17:48:24,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 17:48:24,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-14 17:48:24,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-14 17:48:24,196 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-14 17:48:24,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-14 17:48:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-14 17:48:24,291 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-14 17:48:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-14 17:48:24,336 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-14 17:48:24,336 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-14 17:48:24,337 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-14 17:48:24,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-14 17:48:24,539 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-14 17:48:24,542 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-04-14 17:48:24,544 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-14 17:48:24,589 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-14 17:48:24,589 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2022-04-14 17:48:24,589 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-14 17:48:24,589 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-14 17:48:24,589 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2022-04-14 17:48:24,589 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2022-04-14 17:48:24,589 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2022-04-14 17:48:24,589 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-14 17:48:24,589 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-14 17:48:24,589 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-14 17:48:24,589 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-14 17:48:24,589 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-14 17:48:24,590 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-14 17:48:24,590 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2022-04-14 17:48:24,590 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2022-04-14 17:48:24,590 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2022-04-14 17:48:24,590 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2022-04-14 17:48:24,590 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2022-04-14 17:48:24,590 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-14 17:48:24,590 WARN L170 areAnnotationChecker]: L7-2 has no Hoare annotation [2022-04-14 17:48:24,590 WARN L170 areAnnotationChecker]: L22-1 has no Hoare annotation [2022-04-14 17:48:24,590 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2022-04-14 17:48:24,590 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2022-04-14 17:48:24,590 WARN L170 areAnnotationChecker]: L10-2 has no Hoare annotation [2022-04-14 17:48:24,590 WARN L170 areAnnotationChecker]: assume_abort_if_notEXIT has no Hoare annotation [2022-04-14 17:48:24,590 WARN L170 areAnnotationChecker]: L28-3 has no Hoare annotation [2022-04-14 17:48:24,590 WARN L170 areAnnotationChecker]: L28-3 has no Hoare annotation [2022-04-14 17:48:24,590 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-14 17:48:24,590 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-14 17:48:24,590 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-14 17:48:24,590 WARN L170 areAnnotationChecker]: L28-4 has no Hoare annotation [2022-04-14 17:48:24,591 WARN L170 areAnnotationChecker]: L28-4 has no Hoare annotation [2022-04-14 17:48:24,591 WARN L170 areAnnotationChecker]: L28-1 has no Hoare annotation [2022-04-14 17:48:24,591 WARN L170 areAnnotationChecker]: L28-1 has no Hoare annotation [2022-04-14 17:48:24,591 WARN L170 areAnnotationChecker]: L29-1 has no Hoare annotation [2022-04-14 17:48:24,591 WARN L170 areAnnotationChecker]: L29-1 has no Hoare annotation [2022-04-14 17:48:24,591 WARN L170 areAnnotationChecker]: L39 has no Hoare annotation [2022-04-14 17:48:24,591 WARN L170 areAnnotationChecker]: L39 has no Hoare annotation [2022-04-14 17:48:24,591 WARN L170 areAnnotationChecker]: L40 has no Hoare annotation [2022-04-14 17:48:24,591 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2022-04-14 17:48:24,591 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2022-04-14 17:48:24,591 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-14 17:48:24,591 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2022-04-14 17:48:24,591 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. [2022-04-14 17:48:24,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 05:48:24 BoogieIcfgContainer [2022-04-14 17:48:24,592 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-14 17:48:24,593 INFO L158 Benchmark]: Toolchain (without parser) took 6223.62ms. Allocated memory was 199.2MB in the beginning and 349.2MB in the end (delta: 149.9MB). Free memory was 140.7MB in the beginning and 240.8MB in the end (delta: -100.1MB). Peak memory consumption was 49.8MB. Max. memory is 8.0GB. [2022-04-14 17:48:24,593 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 199.2MB. Free memory is still 157.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-14 17:48:24,593 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.90ms. Allocated memory was 199.2MB in the beginning and 349.2MB in the end (delta: 149.9MB). Free memory was 171.4MB in the beginning and 317.6MB in the end (delta: -146.1MB). Peak memory consumption was 8.5MB. Max. memory is 8.0GB. [2022-04-14 17:48:24,593 INFO L158 Benchmark]: Boogie Preprocessor took 37.51ms. Allocated memory is still 349.2MB. Free memory was 317.6MB in the beginning and 316.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-14 17:48:24,594 INFO L158 Benchmark]: RCFGBuilder took 272.79ms. Allocated memory is still 349.2MB. Free memory was 316.1MB in the beginning and 304.7MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-14 17:48:24,594 INFO L158 Benchmark]: TraceAbstraction took 5697.53ms. Allocated memory is still 349.2MB. Free memory was 304.3MB in the beginning and 240.8MB in the end (delta: 63.5MB). Peak memory consumption was 64.6MB. Max. memory is 8.0GB. [2022-04-14 17:48:24,595 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 199.2MB. Free memory is still 157.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 196.90ms. Allocated memory was 199.2MB in the beginning and 349.2MB in the end (delta: 149.9MB). Free memory was 171.4MB in the beginning and 317.6MB in the end (delta: -146.1MB). Peak memory consumption was 8.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.51ms. Allocated memory is still 349.2MB. Free memory was 317.6MB in the beginning and 316.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 272.79ms. Allocated memory is still 349.2MB. Free memory was 316.1MB in the beginning and 304.7MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 5697.53ms. Allocated memory is still 349.2MB. Free memory was 304.3MB in the beginning and 240.8MB in the end (delta: 63.5MB). Peak memory consumption was 64.6MB. 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: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int counter = 0; VAL [\old(counter)=5, counter=0] [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L22] CALL assume_abort_if_not(k <= 256) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L7] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L22] RET assume_abort_if_not(k <= 256) VAL [\old(counter)=0, counter=0, k=256] [L24] y = 0 [L25] x = 0 [L26] c = 0 VAL [\old(counter)=0, c=0, counter=0, k=256, x=0, y=0] [L28] EXPR counter++ VAL [\old(counter)=0, c=0, counter=1, counter++=0, k=256, x=0, y=0] [L28] COND TRUE counter++<2 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(counter)=0, c=0, counter=1, k=256, x=0, y=0] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [\old(counter)=0, c=1, counter=1, k=256, x=1, y=1] [L28] EXPR counter++ VAL [\old(counter)=0, c=1, counter=2, counter++=1, k=256, x=1, y=1] [L28] COND TRUE counter++<2 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(counter)=0, c=1, counter=2, k=256, x=1, y=1] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [\old(counter)=0, c=2, counter=2, k=256, x=33, y=2] [L28] EXPR counter++ VAL [\old(counter)=0, c=2, counter=3, counter++=2, k=256, x=33, y=2] [L28] COND FALSE !(counter++<2) [L39] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, \old(counter)=0, counter=3] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=3] [L39] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(counter)=0, c=2, counter=3, k=256, x=33, y=2] [L40] CALL __VERIFIER_assert(k*y == y*y) VAL [\old(cond)=0, \old(counter)=0, counter=3] [L10] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=3] [L12] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.6s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 467 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 308 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 142 IncrementalHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 159 mSDtfsCounter, 142 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 203 GetRequests, 172 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=6, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 181 NumberOfCodeBlocks, 181 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 703 SizeOfPredicates, 7 NumberOfNonLiveVariables, 482 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 29/40 InterpolantCoveringCapability, 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! [2022-04-14 17:48:24,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...