/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/prodbin-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-28 07:27:21,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-28 07:27:21,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-28 07:27:21,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-28 07:27:21,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-28 07:27:21,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-28 07:27:21,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-28 07:27:21,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-28 07:27:21,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-28 07:27:21,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-28 07:27:21,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-28 07:27:21,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-28 07:27:21,963 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-28 07:27:21,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-28 07:27:21,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-28 07:27:21,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-28 07:27:21,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-28 07:27:21,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-28 07:27:21,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-28 07:27:21,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-28 07:27:21,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-28 07:27:21,984 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-28 07:27:21,993 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-28 07:27:21,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-28 07:27:21,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-28 07:27:21,995 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-28 07:27:21,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-28 07:27:21,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-28 07:27:21,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-28 07:27:21,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-28 07:27:21,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-28 07:27:21,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-28 07:27:21,997 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-28 07:27:21,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-28 07:27:21,997 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-28 07:27:21,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-28 07:27:21,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-28 07:27:21,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-28 07:27:21,997 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-28 07:27:21,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-28 07:27:21,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 07:27:21,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-28 07:27:21,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-28 07:27:21,998 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-28 07:27:21,998 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-28 07:27:21,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-28 07:27:21,998 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-28 07:27:21,999 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-28 07:27:22,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-28 07:27:22,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-28 07:27:22,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-28 07:27:22,238 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-28 07:27:22,238 INFO L275 PluginConnector]: CDTParser initialized [2022-04-28 07:27:22,239 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/prodbin-ll_valuebound1.c [2022-04-28 07:27:22,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee2d9fd89/1bf9c837378d46438f013c0af20c7810/FLAG247422ae5 [2022-04-28 07:27:22,691 INFO L306 CDTParser]: Found 1 translation units. [2022-04-28 07:27:22,691 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prodbin-ll_valuebound1.c [2022-04-28 07:27:22,696 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee2d9fd89/1bf9c837378d46438f013c0af20c7810/FLAG247422ae5 [2022-04-28 07:27:22,706 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee2d9fd89/1bf9c837378d46438f013c0af20c7810 [2022-04-28 07:27:22,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-28 07:27:22,709 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-28 07:27:22,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-28 07:27:22,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-28 07:27:22,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-28 07:27:22,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 07:27:22" (1/1) ... [2022-04-28 07:27:22,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ba09cf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 07:27:22, skipping insertion in model container [2022-04-28 07:27:22,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 07:27:22" (1/1) ... [2022-04-28 07:27:22,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-28 07:27:22,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-28 07:27:22,871 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/prodbin-ll_valuebound1.c[537,550] [2022-04-28 07:27:22,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 07:27:22,891 INFO L203 MainTranslator]: Completed pre-run [2022-04-28 07:27:22,901 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/prodbin-ll_valuebound1.c[537,550] [2022-04-28 07:27:22,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 07:27:22,918 INFO L208 MainTranslator]: Completed translation [2022-04-28 07:27:22,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 07:27:22 WrapperNode [2022-04-28 07:27:22,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-28 07:27:22,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-28 07:27:22,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-28 07:27:22,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-28 07:27:22,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 07:27:22" (1/1) ... [2022-04-28 07:27:22,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 07:27:22" (1/1) ... [2022-04-28 07:27:22,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 07:27:22" (1/1) ... [2022-04-28 07:27:22,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 07:27:22" (1/1) ... [2022-04-28 07:27:22,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 07:27:22" (1/1) ... [2022-04-28 07:27:22,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 07:27:22" (1/1) ... [2022-04-28 07:27:22,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 07:27:22" (1/1) ... [2022-04-28 07:27:22,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-28 07:27:22,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-28 07:27:22,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-28 07:27:22,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-28 07:27:22,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 07:27:22" (1/1) ... [2022-04-28 07:27:22,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 07:27:22,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 07:27:22,999 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) [2022-04-28 07:27:23,007 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 [2022-04-28 07:27:23,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-28 07:27:23,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-28 07:27:23,041 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-28 07:27:23,041 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-28 07:27:23,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-28 07:27:23,041 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-28 07:27:23,042 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-28 07:27:23,042 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-28 07:27:23,042 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-28 07:27:23,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-28 07:27:23,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-28 07:27:23,044 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-28 07:27:23,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-28 07:27:23,044 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-28 07:27:23,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-28 07:27:23,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-28 07:27:23,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-28 07:27:23,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-28 07:27:23,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-28 07:27:23,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-28 07:27:23,097 INFO L234 CfgBuilder]: Building ICFG [2022-04-28 07:27:23,098 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-28 07:27:23,225 INFO L275 CfgBuilder]: Performing block encoding [2022-04-28 07:27:23,231 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-28 07:27:23,231 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-28 07:27:23,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 07:27:23 BoogieIcfgContainer [2022-04-28 07:27:23,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-28 07:27:23,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-28 07:27:23,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-28 07:27:23,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-28 07:27:23,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 07:27:22" (1/3) ... [2022-04-28 07:27:23,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537a6195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 07:27:23, skipping insertion in model container [2022-04-28 07:27:23,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 07:27:22" (2/3) ... [2022-04-28 07:27:23,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537a6195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 07:27:23, skipping insertion in model container [2022-04-28 07:27:23,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 07:27:23" (3/3) ... [2022-04-28 07:27:23,239 INFO L111 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound1.c [2022-04-28 07:27:23,250 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-28 07:27:23,251 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-28 07:27:23,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-28 07:27:23,291 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@53d697df, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@59e55d51 [2022-04-28 07:27:23,307 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-28 07:27:23,315 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-28 07:27:23,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-04-28 07:27:23,328 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 07:27:23,328 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 07:27:23,329 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 07:27:23,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 07:27:23,335 INFO L85 PathProgramCache]: Analyzing trace with hash -589322634, now seen corresponding path program 1 times [2022-04-28 07:27:23,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 07:27:23,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1639346303] [2022-04-28 07:27:23,352 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 07:27:23,352 INFO L85 PathProgramCache]: Analyzing trace with hash -589322634, now seen corresponding path program 2 times [2022-04-28 07:27:23,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 07:27:23,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077941096] [2022-04-28 07:27:23,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 07:27:23,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 07:27:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 07:27:23,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 07:27:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 07:27:23,515 INFO L290 TraceCheckUtils]: 0: Hoare triple {52#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(13, 2);call #Ultimate.allocInit(12, 3); {35#true} is VALID [2022-04-28 07:27:23,515 INFO L290 TraceCheckUtils]: 1: Hoare triple {35#true} assume true; {35#true} is VALID [2022-04-28 07:27:23,515 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {35#true} {35#true} #71#return; {35#true} is VALID [2022-04-28 07:27:23,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-28 07:27:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 07:27:23,535 INFO L290 TraceCheckUtils]: 0: Hoare triple {35#true} ~cond := #in~cond; {35#true} is VALID [2022-04-28 07:27:23,536 INFO L290 TraceCheckUtils]: 1: Hoare triple {35#true} assume 0 == ~cond;assume false; {36#false} is VALID [2022-04-28 07:27:23,536 INFO L290 TraceCheckUtils]: 2: Hoare triple {36#false} assume true; {36#false} is VALID [2022-04-28 07:27:23,536 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {36#false} {35#true} #61#return; {36#false} is VALID [2022-04-28 07:27:23,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-28 07:27:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 07:27:23,545 INFO L290 TraceCheckUtils]: 0: Hoare triple {35#true} ~cond := #in~cond; {35#true} is VALID [2022-04-28 07:27:23,546 INFO L290 TraceCheckUtils]: 1: Hoare triple {35#true} assume 0 == ~cond;assume false; {36#false} is VALID [2022-04-28 07:27:23,546 INFO L290 TraceCheckUtils]: 2: Hoare triple {36#false} assume true; {36#false} is VALID [2022-04-28 07:27:23,547 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {36#false} {36#false} #63#return; {36#false} is VALID [2022-04-28 07:27:23,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-28 07:27:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 07:27:23,555 INFO L290 TraceCheckUtils]: 0: Hoare triple {35#true} ~cond := #in~cond; {35#true} is VALID [2022-04-28 07:27:23,555 INFO L290 TraceCheckUtils]: 1: Hoare triple {35#true} assume 0 == ~cond;assume false; {36#false} is VALID [2022-04-28 07:27:23,556 INFO L290 TraceCheckUtils]: 2: Hoare triple {36#false} assume true; {36#false} is VALID [2022-04-28 07:27:23,556 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {36#false} {36#false} #65#return; {36#false} is VALID [2022-04-28 07:27:23,557 INFO L272 TraceCheckUtils]: 0: Hoare triple {35#true} call ULTIMATE.init(); {52#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 07:27:23,557 INFO L290 TraceCheckUtils]: 1: Hoare triple {52#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(13, 2);call #Ultimate.allocInit(12, 3); {35#true} is VALID [2022-04-28 07:27:23,558 INFO L290 TraceCheckUtils]: 2: Hoare triple {35#true} assume true; {35#true} is VALID [2022-04-28 07:27:23,558 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {35#true} {35#true} #71#return; {35#true} is VALID [2022-04-28 07:27:23,558 INFO L272 TraceCheckUtils]: 4: Hoare triple {35#true} call #t~ret6 := main(); {35#true} is VALID [2022-04-28 07:27:23,558 INFO L290 TraceCheckUtils]: 5: Hoare triple {35#true} havoc ~a~0;havoc ~b~0;havoc ~x~0;havoc ~y~0;havoc ~z~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~a~0 := #t~nondet4;havoc #t~nondet4; {35#true} is VALID [2022-04-28 07:27:23,559 INFO L272 TraceCheckUtils]: 6: Hoare triple {35#true} call assume_abort_if_not((if ~a~0 >= 0 && ~a~0 <= 1 then 1 else 0)); {35#true} is VALID [2022-04-28 07:27:23,559 INFO L290 TraceCheckUtils]: 7: Hoare triple {35#true} ~cond := #in~cond; {35#true} is VALID [2022-04-28 07:27:23,559 INFO L290 TraceCheckUtils]: 8: Hoare triple {35#true} assume 0 == ~cond;assume false; {36#false} is VALID [2022-04-28 07:27:23,560 INFO L290 TraceCheckUtils]: 9: Hoare triple {36#false} assume true; {36#false} is VALID [2022-04-28 07:27:23,560 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {36#false} {35#true} #61#return; {36#false} is VALID [2022-04-28 07:27:23,560 INFO L290 TraceCheckUtils]: 11: Hoare triple {36#false} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~b~0 := #t~nondet5;havoc #t~nondet5; {36#false} is VALID [2022-04-28 07:27:23,560 INFO L272 TraceCheckUtils]: 12: Hoare triple {36#false} call assume_abort_if_not((if ~b~0 >= 0 && ~b~0 <= 1 then 1 else 0)); {35#true} is VALID [2022-04-28 07:27:23,560 INFO L290 TraceCheckUtils]: 13: Hoare triple {35#true} ~cond := #in~cond; {35#true} is VALID [2022-04-28 07:27:23,561 INFO L290 TraceCheckUtils]: 14: Hoare triple {35#true} assume 0 == ~cond;assume false; {36#false} is VALID [2022-04-28 07:27:23,561 INFO L290 TraceCheckUtils]: 15: Hoare triple {36#false} assume true; {36#false} is VALID [2022-04-28 07:27:23,561 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {36#false} {36#false} #63#return; {36#false} is VALID [2022-04-28 07:27:23,562 INFO L272 TraceCheckUtils]: 17: Hoare triple {36#false} call assume_abort_if_not((if ~b~0 >= 1 then 1 else 0)); {35#true} is VALID [2022-04-28 07:27:23,562 INFO L290 TraceCheckUtils]: 18: Hoare triple {35#true} ~cond := #in~cond; {35#true} is VALID [2022-04-28 07:27:23,562 INFO L290 TraceCheckUtils]: 19: Hoare triple {35#true} assume 0 == ~cond;assume false; {36#false} is VALID [2022-04-28 07:27:23,562 INFO L290 TraceCheckUtils]: 20: Hoare triple {36#false} assume true; {36#false} is VALID [2022-04-28 07:27:23,563 INFO L284 TraceCheckUtils]: 21: Hoare quadruple {36#false} {36#false} #65#return; {36#false} is VALID [2022-04-28 07:27:23,563 INFO L290 TraceCheckUtils]: 22: Hoare triple {36#false} ~x~0 := ~a~0;~y~0 := ~b~0;~z~0 := 0; {36#false} is VALID [2022-04-28 07:27:23,563 INFO L290 TraceCheckUtils]: 23: Hoare triple {36#false} assume false; {36#false} is VALID [2022-04-28 07:27:23,563 INFO L272 TraceCheckUtils]: 24: Hoare triple {36#false} call __VERIFIER_assert((if ~z~0 == ~a~0 * ~b~0 then 1 else 0)); {36#false} is VALID [2022-04-28 07:27:23,564 INFO L290 TraceCheckUtils]: 25: Hoare triple {36#false} ~cond := #in~cond; {36#false} is VALID [2022-04-28 07:27:23,564 INFO L290 TraceCheckUtils]: 26: Hoare triple {36#false} assume 0 == ~cond; {36#false} is VALID [2022-04-28 07:27:23,564 INFO L290 TraceCheckUtils]: 27: Hoare triple {36#false} assume !false; {36#false} is VALID [2022-04-28 07:27:23,565 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-28 07:27:23,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 07:27:23,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077941096] [2022-04-28 07:27:23,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077941096] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 07:27:23,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 07:27:23,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 07:27:23,569 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 07:27:23,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1639346303] [2022-04-28 07:27:23,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1639346303] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 07:27:23,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 07:27:23,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 07:27:23,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000195236] [2022-04-28 07:27:23,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 07:27:23,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2022-04-28 07:27:23,579 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 07:27:23,582 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-28 07:27:23,615 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 07:27:23,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-28 07:27:23,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 07:27:23,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-28 07:27:23,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 07:27:23,644 INFO L87 Difference]: Start difference. First operand has 32 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-28 07:27:23,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 07:27:23,811 INFO L93 Difference]: Finished difference Result 57 states and 77 transitions. [2022-04-28 07:27:23,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-28 07:27:23,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2022-04-28 07:27:23,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 07:27:23,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-28 07:27:23,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2022-04-28 07:27:23,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-28 07:27:23,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2022-04-28 07:27:23,830 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 77 transitions. [2022-04-28 07:27:23,940 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 77 edges. 77 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 07:27:23,952 INFO L225 Difference]: With dead ends: 57 [2022-04-28 07:27:23,952 INFO L226 Difference]: Without dead ends: 27 [2022-04-28 07:27:23,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 07:27:23,965 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 19 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 07:27:23,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 34 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 07:27:24,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-04-28 07:27:24,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-04-28 07:27:24,036 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 07:27:24,037 INFO L82 GeneralOperation]: Start isEquivalent. First operand 27 states. Second operand has 27 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 07:27:24,038 INFO L74 IsIncluded]: Start isIncluded. First operand 27 states. Second operand has 27 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 07:27:24,038 INFO L87 Difference]: Start difference. First operand 27 states. Second operand has 27 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 07:27:24,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 07:27:24,045 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-04-28 07:27:24,046 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-04-28 07:27:24,046 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 07:27:24,046 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 07:27:24,047 INFO L74 IsIncluded]: Start isIncluded. First operand has 27 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 27 states. [2022-04-28 07:27:24,047 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 27 states. [2022-04-28 07:27:24,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 07:27:24,050 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-04-28 07:27:24,050 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-04-28 07:27:24,051 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 07:27:24,051 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 07:27:24,051 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 07:27:24,051 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 07:27:24,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 07:27:24,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-04-28 07:27:24,055 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 28 [2022-04-28 07:27:24,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 07:27:24,055 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-04-28 07:27:24,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-28 07:27:24,056 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 27 states and 31 transitions. [2022-04-28 07:27:24,095 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 07:27:24,095 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-04-28 07:27:24,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-04-28 07:27:24,097 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 07:27:24,097 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 07:27:24,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-28 07:27:24,098 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 07:27:24,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 07:27:24,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1736242504, now seen corresponding path program 1 times [2022-04-28 07:27:24,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 07:27:24,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [893635563] [2022-04-28 07:27:24,105 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 07:27:24,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1736242504, now seen corresponding path program 2 times [2022-04-28 07:27:24,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 07:27:24,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151127954] [2022-04-28 07:27:24,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 07:27:24,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 07:27:24,141 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 07:27:24,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [634001622] [2022-04-28 07:27:24,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 07:27:24,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 07:27:24,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 07:27:24,145 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) [2022-04-28 07:27:24,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-28 07:27:24,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-28 07:27:24,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 07:27:24,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-28 07:27:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 07:27:24,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 07:27:24,430 INFO L272 TraceCheckUtils]: 0: Hoare triple {277#true} call ULTIMATE.init(); {277#true} is VALID [2022-04-28 07:27:24,430 INFO L290 TraceCheckUtils]: 1: Hoare triple {277#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(13, 2);call #Ultimate.allocInit(12, 3); {277#true} is VALID [2022-04-28 07:27:24,431 INFO L290 TraceCheckUtils]: 2: Hoare triple {277#true} assume true; {277#true} is VALID [2022-04-28 07:27:24,431 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {277#true} {277#true} #71#return; {277#true} is VALID [2022-04-28 07:27:24,433 INFO L272 TraceCheckUtils]: 4: Hoare triple {277#true} call #t~ret6 := main(); {277#true} is VALID [2022-04-28 07:27:24,436 INFO L290 TraceCheckUtils]: 5: Hoare triple {277#true} havoc ~a~0;havoc ~b~0;havoc ~x~0;havoc ~y~0;havoc ~z~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~a~0 := #t~nondet4;havoc #t~nondet4; {277#true} is VALID [2022-04-28 07:27:24,436 INFO L272 TraceCheckUtils]: 6: Hoare triple {277#true} call assume_abort_if_not((if ~a~0 >= 0 && ~a~0 <= 1 then 1 else 0)); {277#true} is VALID [2022-04-28 07:27:24,437 INFO L290 TraceCheckUtils]: 7: Hoare triple {277#true} ~cond := #in~cond; {277#true} is VALID [2022-04-28 07:27:24,437 INFO L290 TraceCheckUtils]: 8: Hoare triple {277#true} assume !(0 == ~cond); {277#true} is VALID [2022-04-28 07:27:24,439 INFO L290 TraceCheckUtils]: 9: Hoare triple {277#true} assume true; {277#true} is VALID [2022-04-28 07:27:24,440 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {277#true} {277#true} #61#return; {277#true} is VALID [2022-04-28 07:27:24,440 INFO L290 TraceCheckUtils]: 11: Hoare triple {277#true} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~b~0 := #t~nondet5;havoc #t~nondet5; {277#true} is VALID [2022-04-28 07:27:24,441 INFO L272 TraceCheckUtils]: 12: Hoare triple {277#true} call assume_abort_if_not((if ~b~0 >= 0 && ~b~0 <= 1 then 1 else 0)); {277#true} is VALID [2022-04-28 07:27:24,441 INFO L290 TraceCheckUtils]: 13: Hoare triple {277#true} ~cond := #in~cond; {277#true} is VALID [2022-04-28 07:27:24,441 INFO L290 TraceCheckUtils]: 14: Hoare triple {277#true} assume !(0 == ~cond); {277#true} is VALID [2022-04-28 07:27:24,441 INFO L290 TraceCheckUtils]: 15: Hoare triple {277#true} assume true; {277#true} is VALID [2022-04-28 07:27:24,441 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {277#true} {277#true} #63#return; {277#true} is VALID [2022-04-28 07:27:24,441 INFO L272 TraceCheckUtils]: 17: Hoare triple {277#true} call assume_abort_if_not((if ~b~0 >= 1 then 1 else 0)); {277#true} is VALID [2022-04-28 07:27:24,442 INFO L290 TraceCheckUtils]: 18: Hoare triple {277#true} ~cond := #in~cond; {277#true} is VALID [2022-04-28 07:27:24,442 INFO L290 TraceCheckUtils]: 19: Hoare triple {277#true} assume !(0 == ~cond); {277#true} is VALID [2022-04-28 07:27:24,442 INFO L290 TraceCheckUtils]: 20: Hoare triple {277#true} assume true; {277#true} is VALID [2022-04-28 07:27:24,442 INFO L284 TraceCheckUtils]: 21: Hoare quadruple {277#true} {277#true} #65#return; {277#true} is VALID [2022-04-28 07:27:24,443 INFO L290 TraceCheckUtils]: 22: Hoare triple {277#true} ~x~0 := ~a~0;~y~0 := ~b~0;~z~0 := 0; {348#(and (= main_~z~0 0) (= main_~b~0 main_~y~0) (= main_~a~0 main_~x~0))} is VALID [2022-04-28 07:27:24,443 INFO L290 TraceCheckUtils]: 23: Hoare triple {348#(and (= main_~z~0 0) (= main_~b~0 main_~y~0) (= main_~a~0 main_~x~0))} assume !false; {348#(and (= main_~z~0 0) (= main_~b~0 main_~y~0) (= main_~a~0 main_~x~0))} is VALID [2022-04-28 07:27:24,445 INFO L272 TraceCheckUtils]: 24: Hoare triple {348#(and (= main_~z~0 0) (= main_~b~0 main_~y~0) (= main_~a~0 main_~x~0))} call __VERIFIER_assert((if ~z~0 + ~x~0 * ~y~0 == ~a~0 * ~b~0 then 1 else 0)); {355#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 07:27:24,446 INFO L290 TraceCheckUtils]: 25: Hoare triple {355#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {359#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 07:27:24,447 INFO L290 TraceCheckUtils]: 26: Hoare triple {359#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {278#false} is VALID [2022-04-28 07:27:24,447 INFO L290 TraceCheckUtils]: 27: Hoare triple {278#false} assume !false; {278#false} is VALID [2022-04-28 07:27:24,447 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-28 07:27:24,447 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 07:27:24,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 07:27:24,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151127954] [2022-04-28 07:27:24,448 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 07:27:24,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634001622] [2022-04-28 07:27:24,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634001622] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 07:27:24,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 07:27:24,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 07:27:24,451 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 07:27:24,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [893635563] [2022-04-28 07:27:24,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [893635563] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 07:27:24,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 07:27:24,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 07:27:24,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716772565] [2022-04-28 07:27:24,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 07:27:24,454 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2022-04-28 07:27:24,455 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 07:27:24,455 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-28 07:27:24,475 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 07:27:24,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-28 07:27:24,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 07:27:24,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-28 07:27:24,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-28 07:27:24,478 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-28 07:27:24,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 07:27:24,638 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2022-04-28 07:27:24,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-28 07:27:24,638 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2022-04-28 07:27:24,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 07:27:24,639 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-28 07:27:24,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 45 transitions. [2022-04-28 07:27:24,641 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-28 07:27:24,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 45 transitions. [2022-04-28 07:27:24,643 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 45 transitions. [2022-04-28 07:27:24,680 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 45 edges. 45 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 07:27:24,682 INFO L225 Difference]: With dead ends: 39 [2022-04-28 07:27:24,682 INFO L226 Difference]: Without dead ends: 37 [2022-04-28 07:27:24,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-28 07:27:24,684 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 8 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 07:27:24,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 87 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 07:27:24,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-04-28 07:27:24,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2022-04-28 07:27:24,696 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 07:27:24,696 INFO L82 GeneralOperation]: Start isEquivalent. First operand 37 states. Second operand has 33 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-28 07:27:24,697 INFO L74 IsIncluded]: Start isIncluded. First operand 37 states. Second operand has 33 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-28 07:27:24,697 INFO L87 Difference]: Start difference. First operand 37 states. Second operand has 33 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-28 07:27:24,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 07:27:24,700 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2022-04-28 07:27:24,700 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2022-04-28 07:27:24,701 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 07:27:24,701 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 07:27:24,701 INFO L74 IsIncluded]: Start isIncluded. First operand has 33 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) Second operand 37 states. [2022-04-28 07:27:24,701 INFO L87 Difference]: Start difference. First operand has 33 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) Second operand 37 states. [2022-04-28 07:27:24,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 07:27:24,704 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2022-04-28 07:27:24,704 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2022-04-28 07:27:24,705 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 07:27:24,705 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 07:27:24,705 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 07:27:24,705 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 07:27:24,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-28 07:27:24,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-04-28 07:27:24,707 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 28 [2022-04-28 07:27:24,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 07:27:24,708 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-04-28 07:27:24,708 INFO L496 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-28 07:27:24,708 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 33 states and 37 transitions. [2022-04-28 07:27:24,748 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 37 edges. 37 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 07:27:24,748 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-04-28 07:27:24,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-04-28 07:27:24,749 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 07:27:24,749 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 07:27:24,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-28 07:27:24,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 07:27:24,973 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 07:27:24,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 07:27:24,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1911690432, now seen corresponding path program 1 times [2022-04-28 07:27:24,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 07:27:24,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [734726890] [2022-04-28 07:27:24,974 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 07:27:24,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1911690432, now seen corresponding path program 2 times [2022-04-28 07:27:24,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 07:27:24,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378157871] [2022-04-28 07:27:24,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 07:27:24,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 07:27:24,994 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 07:27:24,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1337437641] [2022-04-28 07:27:24,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 07:27:24,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 07:27:24,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 07:27:24,996 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) [2022-04-28 07:27:25,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-28 07:27:25,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 07:27:25,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 07:27:25,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-28 07:27:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 07:27:25,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 07:27:25,181 INFO L272 TraceCheckUtils]: 0: Hoare triple {585#true} call ULTIMATE.init(); {585#true} is VALID [2022-04-28 07:27:25,182 INFO L290 TraceCheckUtils]: 1: Hoare triple {585#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(13, 2);call #Ultimate.allocInit(12, 3); {585#true} is VALID [2022-04-28 07:27:25,182 INFO L290 TraceCheckUtils]: 2: Hoare triple {585#true} assume true; {585#true} is VALID [2022-04-28 07:27:25,183 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {585#true} {585#true} #71#return; {585#true} is VALID [2022-04-28 07:27:25,183 INFO L272 TraceCheckUtils]: 4: Hoare triple {585#true} call #t~ret6 := main(); {585#true} is VALID [2022-04-28 07:27:25,183 INFO L290 TraceCheckUtils]: 5: Hoare triple {585#true} havoc ~a~0;havoc ~b~0;havoc ~x~0;havoc ~y~0;havoc ~z~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~a~0 := #t~nondet4;havoc #t~nondet4; {585#true} is VALID [2022-04-28 07:27:25,183 INFO L272 TraceCheckUtils]: 6: Hoare triple {585#true} call assume_abort_if_not((if ~a~0 >= 0 && ~a~0 <= 1 then 1 else 0)); {585#true} is VALID [2022-04-28 07:27:25,183 INFO L290 TraceCheckUtils]: 7: Hoare triple {585#true} ~cond := #in~cond; {585#true} is VALID [2022-04-28 07:27:25,183 INFO L290 TraceCheckUtils]: 8: Hoare triple {585#true} assume !(0 == ~cond); {585#true} is VALID [2022-04-28 07:27:25,183 INFO L290 TraceCheckUtils]: 9: Hoare triple {585#true} assume true; {585#true} is VALID [2022-04-28 07:27:25,184 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {585#true} {585#true} #61#return; {585#true} is VALID [2022-04-28 07:27:25,184 INFO L290 TraceCheckUtils]: 11: Hoare triple {585#true} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~b~0 := #t~nondet5;havoc #t~nondet5; {585#true} is VALID [2022-04-28 07:27:25,184 INFO L272 TraceCheckUtils]: 12: Hoare triple {585#true} call assume_abort_if_not((if ~b~0 >= 0 && ~b~0 <= 1 then 1 else 0)); {585#true} is VALID [2022-04-28 07:27:25,184 INFO L290 TraceCheckUtils]: 13: Hoare triple {585#true} ~cond := #in~cond; {585#true} is VALID [2022-04-28 07:27:25,184 INFO L290 TraceCheckUtils]: 14: Hoare triple {585#true} assume !(0 == ~cond); {585#true} is VALID [2022-04-28 07:27:25,184 INFO L290 TraceCheckUtils]: 15: Hoare triple {585#true} assume true; {585#true} is VALID [2022-04-28 07:27:25,185 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {585#true} {585#true} #63#return; {585#true} is VALID [2022-04-28 07:27:25,185 INFO L272 TraceCheckUtils]: 17: Hoare triple {585#true} call assume_abort_if_not((if ~b~0 >= 1 then 1 else 0)); {585#true} is VALID [2022-04-28 07:27:25,185 INFO L290 TraceCheckUtils]: 18: Hoare triple {585#true} ~cond := #in~cond; {644#(= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)} is VALID [2022-04-28 07:27:25,187 INFO L290 TraceCheckUtils]: 19: Hoare triple {644#(= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)} assume !(0 == ~cond); {648#(not (= |assume_abort_if_not_#in~cond| 0))} is VALID [2022-04-28 07:27:25,187 INFO L290 TraceCheckUtils]: 20: Hoare triple {648#(not (= |assume_abort_if_not_#in~cond| 0))} assume true; {648#(not (= |assume_abort_if_not_#in~cond| 0))} is VALID [2022-04-28 07:27:25,188 INFO L284 TraceCheckUtils]: 21: Hoare quadruple {648#(not (= |assume_abort_if_not_#in~cond| 0))} {585#true} #65#return; {655#(<= 1 main_~b~0)} is VALID [2022-04-28 07:27:25,188 INFO L290 TraceCheckUtils]: 22: Hoare triple {655#(<= 1 main_~b~0)} ~x~0 := ~a~0;~y~0 := ~b~0;~z~0 := 0; {659#(<= 1 main_~y~0)} is VALID [2022-04-28 07:27:25,189 INFO L290 TraceCheckUtils]: 23: Hoare triple {659#(<= 1 main_~y~0)} assume !false; {659#(<= 1 main_~y~0)} is VALID [2022-04-28 07:27:25,189 INFO L272 TraceCheckUtils]: 24: Hoare triple {659#(<= 1 main_~y~0)} call __VERIFIER_assert((if ~z~0 + ~x~0 * ~y~0 == ~a~0 * ~b~0 then 1 else 0)); {585#true} is VALID [2022-04-28 07:27:25,189 INFO L290 TraceCheckUtils]: 25: Hoare triple {585#true} ~cond := #in~cond; {585#true} is VALID [2022-04-28 07:27:25,189 INFO L290 TraceCheckUtils]: 26: Hoare triple {585#true} assume !(0 == ~cond); {585#true} is VALID [2022-04-28 07:27:25,189 INFO L290 TraceCheckUtils]: 27: Hoare triple {585#true} assume true; {585#true} is VALID [2022-04-28 07:27:25,190 INFO L284 TraceCheckUtils]: 28: Hoare quadruple {585#true} {659#(<= 1 main_~y~0)} #67#return; {659#(<= 1 main_~y~0)} is VALID [2022-04-28 07:27:25,192 INFO L290 TraceCheckUtils]: 29: Hoare triple {659#(<= 1 main_~y~0)} assume !(0 != ~y~0); {586#false} is VALID [2022-04-28 07:27:25,193 INFO L272 TraceCheckUtils]: 30: Hoare triple {586#false} call __VERIFIER_assert((if ~z~0 == ~a~0 * ~b~0 then 1 else 0)); {586#false} is VALID [2022-04-28 07:27:25,193 INFO L290 TraceCheckUtils]: 31: Hoare triple {586#false} ~cond := #in~cond; {586#false} is VALID [2022-04-28 07:27:25,193 INFO L290 TraceCheckUtils]: 32: Hoare triple {586#false} assume 0 == ~cond; {586#false} is VALID [2022-04-28 07:27:25,193 INFO L290 TraceCheckUtils]: 33: Hoare triple {586#false} assume !false; {586#false} is VALID [2022-04-28 07:27:25,194 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-04-28 07:27:25,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 07:27:25,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 07:27:25,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378157871] [2022-04-28 07:27:25,195 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 07:27:25,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337437641] [2022-04-28 07:27:25,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337437641] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 07:27:25,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 07:27:25,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-28 07:27:25,195 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 07:27:25,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [734726890] [2022-04-28 07:27:25,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [734726890] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 07:27:25,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 07:27:25,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-28 07:27:25,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738468533] [2022-04-28 07:27:25,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 07:27:25,197 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2022-04-28 07:27:25,197 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 07:27:25,197 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-28 07:27:25,222 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 07:27:25,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-28 07:27:25,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 07:27:25,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-28 07:27:25,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-28 07:27:25,224 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-28 07:27:25,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 07:27:25,423 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-04-28 07:27:25,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-28 07:27:25,423 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2022-04-28 07:27:25,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 07:27:25,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-28 07:27:25,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 45 transitions. [2022-04-28 07:27:25,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-28 07:27:25,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 45 transitions. [2022-04-28 07:27:25,441 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 45 transitions. [2022-04-28 07:27:25,490 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 45 edges. 45 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 07:27:25,492 INFO L225 Difference]: With dead ends: 43 [2022-04-28 07:27:25,492 INFO L226 Difference]: Without dead ends: 36 [2022-04-28 07:27:25,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-28 07:27:25,506 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-28 07:27:25,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 89 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-28 07:27:25,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-04-28 07:27:25,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2022-04-28 07:27:25,525 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 07:27:25,526 INFO L82 GeneralOperation]: Start isEquivalent. First operand 36 states. Second operand has 34 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-28 07:27:25,526 INFO L74 IsIncluded]: Start isIncluded. First operand 36 states. Second operand has 34 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-28 07:27:25,526 INFO L87 Difference]: Start difference. First operand 36 states. Second operand has 34 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-28 07:27:25,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 07:27:25,528 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-04-28 07:27:25,528 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2022-04-28 07:27:25,529 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 07:27:25,529 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 07:27:25,529 INFO L74 IsIncluded]: Start isIncluded. First operand has 34 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 8 states have call successors, (8), 5 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 36 states. [2022-04-28 07:27:25,530 INFO L87 Difference]: Start difference. First operand has 34 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 8 states have call successors, (8), 5 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 36 states. [2022-04-28 07:27:25,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 07:27:25,531 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-04-28 07:27:25,532 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2022-04-28 07:27:25,532 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 07:27:25,532 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 07:27:25,532 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 07:27:25,532 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 07:27:25,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-28 07:27:25,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2022-04-28 07:27:25,534 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 34 [2022-04-28 07:27:25,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 07:27:25,535 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2022-04-28 07:27:25,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-28 07:27:25,535 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 34 states and 38 transitions. [2022-04-28 07:27:25,574 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 07:27:25,574 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-04-28 07:27:25,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-04-28 07:27:25,585 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 07:27:25,586 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 07:27:25,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-28 07:27:25,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-28 07:27:25,788 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 07:27:25,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 07:27:25,788 INFO L85 PathProgramCache]: Analyzing trace with hash 2022075506, now seen corresponding path program 1 times [2022-04-28 07:27:25,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 07:27:25,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [92277951] [2022-04-28 07:27:25,789 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 07:27:25,789 INFO L85 PathProgramCache]: Analyzing trace with hash 2022075506, now seen corresponding path program 2 times [2022-04-28 07:27:25,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 07:27:25,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567716135] [2022-04-28 07:27:25,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 07:27:25,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 07:27:25,810 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 07:27:25,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1655138768] [2022-04-28 07:27:25,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 07:27:25,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 07:27:25,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 07:27:25,812 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) [2022-04-28 07:27:25,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-28 07:27:25,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 07:27:25,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 07:27:25,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 27 conjunts are in the unsatisfiable core [2022-04-28 07:27:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 07:27:25,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 07:27:26,555 INFO L272 TraceCheckUtils]: 0: Hoare triple {922#true} call ULTIMATE.init(); {922#true} is VALID [2022-04-28 07:27:26,556 INFO L290 TraceCheckUtils]: 1: Hoare triple {922#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(13, 2);call #Ultimate.allocInit(12, 3); {922#true} is VALID [2022-04-28 07:27:26,556 INFO L290 TraceCheckUtils]: 2: Hoare triple {922#true} assume true; {922#true} is VALID [2022-04-28 07:27:26,556 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {922#true} {922#true} #71#return; {922#true} is VALID [2022-04-28 07:27:26,556 INFO L272 TraceCheckUtils]: 4: Hoare triple {922#true} call #t~ret6 := main(); {922#true} is VALID [2022-04-28 07:27:26,556 INFO L290 TraceCheckUtils]: 5: Hoare triple {922#true} havoc ~a~0;havoc ~b~0;havoc ~x~0;havoc ~y~0;havoc ~z~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~a~0 := #t~nondet4;havoc #t~nondet4; {922#true} is VALID [2022-04-28 07:27:26,557 INFO L272 TraceCheckUtils]: 6: Hoare triple {922#true} call assume_abort_if_not((if ~a~0 >= 0 && ~a~0 <= 1 then 1 else 0)); {922#true} is VALID [2022-04-28 07:27:26,557 INFO L290 TraceCheckUtils]: 7: Hoare triple {922#true} ~cond := #in~cond; {922#true} is VALID [2022-04-28 07:27:26,557 INFO L290 TraceCheckUtils]: 8: Hoare triple {922#true} assume !(0 == ~cond); {922#true} is VALID [2022-04-28 07:27:26,557 INFO L290 TraceCheckUtils]: 9: Hoare triple {922#true} assume true; {922#true} is VALID [2022-04-28 07:27:26,557 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {922#true} {922#true} #61#return; {922#true} is VALID [2022-04-28 07:27:26,557 INFO L290 TraceCheckUtils]: 11: Hoare triple {922#true} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~b~0 := #t~nondet5;havoc #t~nondet5; {922#true} is VALID [2022-04-28 07:27:26,558 INFO L272 TraceCheckUtils]: 12: Hoare triple {922#true} call assume_abort_if_not((if ~b~0 >= 0 && ~b~0 <= 1 then 1 else 0)); {922#true} is VALID [2022-04-28 07:27:26,567 INFO L290 TraceCheckUtils]: 13: Hoare triple {922#true} ~cond := #in~cond; {966#(= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)} is VALID [2022-04-28 07:27:26,568 INFO L290 TraceCheckUtils]: 14: Hoare triple {966#(= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)} assume !(0 == ~cond); {970#(not (= |assume_abort_if_not_#in~cond| 0))} is VALID [2022-04-28 07:27:26,569 INFO L290 TraceCheckUtils]: 15: Hoare triple {970#(not (= |assume_abort_if_not_#in~cond| 0))} assume true; {970#(not (= |assume_abort_if_not_#in~cond| 0))} is VALID [2022-04-28 07:27:26,569 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {970#(not (= |assume_abort_if_not_#in~cond| 0))} {922#true} #63#return; {977#(and (<= main_~b~0 1) (<= 0 main_~b~0))} is VALID [2022-04-28 07:27:26,570 INFO L272 TraceCheckUtils]: 17: Hoare triple {977#(and (<= main_~b~0 1) (<= 0 main_~b~0))} call assume_abort_if_not((if ~b~0 >= 1 then 1 else 0)); {922#true} is VALID [2022-04-28 07:27:26,570 INFO L290 TraceCheckUtils]: 18: Hoare triple {922#true} ~cond := #in~cond; {922#true} is VALID [2022-04-28 07:27:26,570 INFO L290 TraceCheckUtils]: 19: Hoare triple {922#true} assume !(0 == ~cond); {922#true} is VALID [2022-04-28 07:27:26,570 INFO L290 TraceCheckUtils]: 20: Hoare triple {922#true} assume true; {922#true} is VALID [2022-04-28 07:27:26,571 INFO L284 TraceCheckUtils]: 21: Hoare quadruple {922#true} {977#(and (<= main_~b~0 1) (<= 0 main_~b~0))} #65#return; {977#(and (<= main_~b~0 1) (<= 0 main_~b~0))} is VALID [2022-04-28 07:27:26,571 INFO L290 TraceCheckUtils]: 22: Hoare triple {977#(and (<= main_~b~0 1) (<= 0 main_~b~0))} ~x~0 := ~a~0;~y~0 := ~b~0;~z~0 := 0; {996#(and (<= main_~b~0 1) (= main_~b~0 main_~y~0) (<= 0 main_~b~0) (= main_~a~0 main_~x~0))} is VALID [2022-04-28 07:27:26,572 INFO L290 TraceCheckUtils]: 23: Hoare triple {996#(and (<= main_~b~0 1) (= main_~b~0 main_~y~0) (<= 0 main_~b~0) (= main_~a~0 main_~x~0))} assume !false; {996#(and (<= main_~b~0 1) (= main_~b~0 main_~y~0) (<= 0 main_~b~0) (= main_~a~0 main_~x~0))} is VALID [2022-04-28 07:27:26,572 INFO L272 TraceCheckUtils]: 24: Hoare triple {996#(and (<= main_~b~0 1) (= main_~b~0 main_~y~0) (<= 0 main_~b~0) (= main_~a~0 main_~x~0))} call __VERIFIER_assert((if ~z~0 + ~x~0 * ~y~0 == ~a~0 * ~b~0 then 1 else 0)); {922#true} is VALID [2022-04-28 07:27:26,572 INFO L290 TraceCheckUtils]: 25: Hoare triple {922#true} ~cond := #in~cond; {1006#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} is VALID [2022-04-28 07:27:26,573 INFO L290 TraceCheckUtils]: 26: Hoare triple {1006#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} assume !(0 == ~cond); {1010#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 07:27:26,573 INFO L290 TraceCheckUtils]: 27: Hoare triple {1010#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {1010#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 07:27:26,574 INFO L284 TraceCheckUtils]: 28: Hoare quadruple {1010#(not (= |__VERIFIER_assert_#in~cond| 0))} {996#(and (<= main_~b~0 1) (= main_~b~0 main_~y~0) (<= 0 main_~b~0) (= main_~a~0 main_~x~0))} #67#return; {1017#(and (= (+ main_~z~0 (* main_~y~0 main_~x~0)) (* main_~b~0 main_~a~0)) (<= main_~b~0 1) (= main_~b~0 main_~y~0) (<= 0 main_~b~0) (= main_~a~0 main_~x~0))} is VALID [2022-04-28 07:27:26,575 INFO L290 TraceCheckUtils]: 29: Hoare triple {1017#(and (= (+ main_~z~0 (* main_~y~0 main_~x~0)) (* main_~b~0 main_~a~0)) (<= main_~b~0 1) (= main_~b~0 main_~y~0) (<= 0 main_~b~0) (= main_~a~0 main_~x~0))} assume !!(0 != ~y~0); {1021#(and (not (= main_~y~0 0)) (= (+ main_~z~0 (* main_~y~0 main_~x~0)) (* main_~b~0 main_~a~0)) (<= main_~b~0 1) (= main_~b~0 main_~y~0) (<= 0 main_~b~0) (= main_~a~0 main_~x~0))} is VALID [2022-04-28 07:27:26,577 INFO L290 TraceCheckUtils]: 30: Hoare triple {1021#(and (not (= main_~y~0 0)) (= (+ main_~z~0 (* main_~y~0 main_~x~0)) (* main_~b~0 main_~a~0)) (<= main_~b~0 1) (= main_~b~0 main_~y~0) (<= 0 main_~b~0) (= main_~a~0 main_~x~0))} assume 1 == (if ~y~0 < 0 && 0 != ~y~0 % 2 then ~y~0 % 2 - 2 else ~y~0 % 2);~z~0 := ~z~0 + ~x~0;~y~0 := ~y~0 - 1; {1025#(and (= main_~b~0 (+ main_~y~0 1)) (= (+ main_~z~0 (* main_~y~0 main_~x~0)) (* main_~b~0 main_~a~0)) (<= main_~b~0 1) (not (= (+ main_~y~0 1) 0)) (= main_~a~0 main_~x~0) (<= 0 (+ main_~y~0 1)))} is VALID [2022-04-28 07:27:26,578 INFO L290 TraceCheckUtils]: 31: Hoare triple {1025#(and (= main_~b~0 (+ main_~y~0 1)) (= (+ main_~z~0 (* main_~y~0 main_~x~0)) (* main_~b~0 main_~a~0)) (<= main_~b~0 1) (not (= (+ main_~y~0 1) 0)) (= main_~a~0 main_~x~0) (<= 0 (+ main_~y~0 1)))} ~x~0 := 2 * ~x~0;~y~0 := (if ~y~0 < 0 && 0 != ~y~0 % 2 then 1 + ~y~0 / 2 else ~y~0 / 2); {1029#(and (<= main_~b~0 1) (= (* main_~a~0 2) main_~x~0) (not (= main_~b~0 0)) (= (* main_~b~0 main_~a~0) (+ main_~z~0 (* main_~a~0 (+ (- 1) main_~b~0)))) (<= 0 main_~b~0) (= (div (+ (- 1) main_~b~0) 2) main_~y~0))} is VALID [2022-04-28 07:27:26,579 INFO L290 TraceCheckUtils]: 32: Hoare triple {1029#(and (<= main_~b~0 1) (= (* main_~a~0 2) main_~x~0) (not (= main_~b~0 0)) (= (* main_~b~0 main_~a~0) (+ main_~z~0 (* main_~a~0 (+ (- 1) main_~b~0)))) (<= 0 main_~b~0) (= (div (+ (- 1) main_~b~0) 2) main_~y~0))} assume !false; {1029#(and (<= main_~b~0 1) (= (* main_~a~0 2) main_~x~0) (not (= main_~b~0 0)) (= (* main_~b~0 main_~a~0) (+ main_~z~0 (* main_~a~0 (+ (- 1) main_~b~0)))) (<= 0 main_~b~0) (= (div (+ (- 1) main_~b~0) 2) main_~y~0))} is VALID [2022-04-28 07:27:26,581 INFO L272 TraceCheckUtils]: 33: Hoare triple {1029#(and (<= main_~b~0 1) (= (* main_~a~0 2) main_~x~0) (not (= main_~b~0 0)) (= (* main_~b~0 main_~a~0) (+ main_~z~0 (* main_~a~0 (+ (- 1) main_~b~0)))) (<= 0 main_~b~0) (= (div (+ (- 1) main_~b~0) 2) main_~y~0))} call __VERIFIER_assert((if ~z~0 + ~x~0 * ~y~0 == ~a~0 * ~b~0 then 1 else 0)); {1036#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 07:27:26,582 INFO L290 TraceCheckUtils]: 34: Hoare triple {1036#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {1040#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 07:27:26,582 INFO L290 TraceCheckUtils]: 35: Hoare triple {1040#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {923#false} is VALID [2022-04-28 07:27:26,582 INFO L290 TraceCheckUtils]: 36: Hoare triple {923#false} assume !false; {923#false} is VALID [2022-04-28 07:27:26,583 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-04-28 07:27:26,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 07:28:25,077 INFO L290 TraceCheckUtils]: 36: Hoare triple {923#false} assume !false; {923#false} is VALID [2022-04-28 07:28:25,078 INFO L290 TraceCheckUtils]: 35: Hoare triple {1040#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {923#false} is VALID [2022-04-28 07:28:25,078 INFO L290 TraceCheckUtils]: 34: Hoare triple {1036#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {1040#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 07:28:25,079 INFO L272 TraceCheckUtils]: 33: Hoare triple {1056#(= (+ main_~z~0 (* main_~y~0 main_~x~0)) (* main_~b~0 main_~a~0))} call __VERIFIER_assert((if ~z~0 + ~x~0 * ~y~0 == ~a~0 * ~b~0 then 1 else 0)); {1036#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 07:28:25,080 INFO L290 TraceCheckUtils]: 32: Hoare triple {1056#(= (+ main_~z~0 (* main_~y~0 main_~x~0)) (* main_~b~0 main_~a~0))} assume !false; {1056#(= (+ main_~z~0 (* main_~y~0 main_~x~0)) (* main_~b~0 main_~a~0))} is VALID [2022-04-28 07:28:25,108 INFO L290 TraceCheckUtils]: 31: Hoare triple {1063#(and (or (not (< main_~y~0 0)) (= (mod main_~y~0 2) 0) (= (+ main_~z~0 (* (* main_~x~0 2) (+ (div main_~y~0 2) 1))) (* main_~b~0 main_~a~0))) (or (= (+ main_~z~0 (* (* main_~x~0 2) (div main_~y~0 2))) (* main_~b~0 main_~a~0)) (and (not (= (mod main_~y~0 2) 0)) (< main_~y~0 0))))} ~x~0 := 2 * ~x~0;~y~0 := (if ~y~0 < 0 && 0 != ~y~0 % 2 then 1 + ~y~0 / 2 else ~y~0 / 2); {1056#(= (+ main_~z~0 (* main_~y~0 main_~x~0)) (* main_~b~0 main_~a~0))} is VALID [2022-04-28 07:28:25,111 INFO L290 TraceCheckUtils]: 30: Hoare triple {1067#(or (= (+ (* (* main_~x~0 2) (div (+ (- 1) main_~y~0) 2)) main_~z~0 main_~x~0) (* main_~b~0 main_~a~0)) (not (<= 1 (mod main_~y~0 2))) (< main_~y~0 0))} assume 1 == (if ~y~0 < 0 && 0 != ~y~0 % 2 then ~y~0 % 2 - 2 else ~y~0 % 2);~z~0 := ~z~0 + ~x~0;~y~0 := ~y~0 - 1; {1063#(and (or (not (< main_~y~0 0)) (= (mod main_~y~0 2) 0) (= (+ main_~z~0 (* (* main_~x~0 2) (+ (div main_~y~0 2) 1))) (* main_~b~0 main_~a~0))) (or (= (+ main_~z~0 (* (* main_~x~0 2) (div main_~y~0 2))) (* main_~b~0 main_~a~0)) (and (not (= (mod main_~y~0 2) 0)) (< main_~y~0 0))))} is VALID [2022-04-28 07:28:25,112 INFO L290 TraceCheckUtils]: 29: Hoare triple {1067#(or (= (+ (* (* main_~x~0 2) (div (+ (- 1) main_~y~0) 2)) main_~z~0 main_~x~0) (* main_~b~0 main_~a~0)) (not (<= 1 (mod main_~y~0 2))) (< main_~y~0 0))} assume !!(0 != ~y~0); {1067#(or (= (+ (* (* main_~x~0 2) (div (+ (- 1) main_~y~0) 2)) main_~z~0 main_~x~0) (* main_~b~0 main_~a~0)) (not (<= 1 (mod main_~y~0 2))) (< main_~y~0 0))} is VALID [2022-04-28 07:28:25,318 INFO L284 TraceCheckUtils]: 28: Hoare quadruple {1010#(not (= |__VERIFIER_assert_#in~cond| 0))} {922#true} #67#return; {1067#(or (= (+ (* (* main_~x~0 2) (div (+ (- 1) main_~y~0) 2)) main_~z~0 main_~x~0) (* main_~b~0 main_~a~0)) (not (<= 1 (mod main_~y~0 2))) (< main_~y~0 0))} is VALID [2022-04-28 07:28:25,319 INFO L290 TraceCheckUtils]: 27: Hoare triple {1010#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {1010#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 07:28:25,319 INFO L290 TraceCheckUtils]: 26: Hoare triple {1083#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} assume !(0 == ~cond); {1010#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 07:28:25,320 INFO L290 TraceCheckUtils]: 25: Hoare triple {922#true} ~cond := #in~cond; {1083#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-28 07:28:25,320 INFO L272 TraceCheckUtils]: 24: Hoare triple {922#true} call __VERIFIER_assert((if ~z~0 + ~x~0 * ~y~0 == ~a~0 * ~b~0 then 1 else 0)); {922#true} is VALID [2022-04-28 07:28:25,320 INFO L290 TraceCheckUtils]: 23: Hoare triple {922#true} assume !false; {922#true} is VALID [2022-04-28 07:28:25,320 INFO L290 TraceCheckUtils]: 22: Hoare triple {922#true} ~x~0 := ~a~0;~y~0 := ~b~0;~z~0 := 0; {922#true} is VALID [2022-04-28 07:28:25,320 INFO L284 TraceCheckUtils]: 21: Hoare quadruple {922#true} {922#true} #65#return; {922#true} is VALID [2022-04-28 07:28:25,320 INFO L290 TraceCheckUtils]: 20: Hoare triple {922#true} assume true; {922#true} is VALID [2022-04-28 07:28:25,320 INFO L290 TraceCheckUtils]: 19: Hoare triple {922#true} assume !(0 == ~cond); {922#true} is VALID [2022-04-28 07:28:25,320 INFO L290 TraceCheckUtils]: 18: Hoare triple {922#true} ~cond := #in~cond; {922#true} is VALID [2022-04-28 07:28:25,321 INFO L272 TraceCheckUtils]: 17: Hoare triple {922#true} call assume_abort_if_not((if ~b~0 >= 1 then 1 else 0)); {922#true} is VALID [2022-04-28 07:28:25,321 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {922#true} {922#true} #63#return; {922#true} is VALID [2022-04-28 07:28:25,321 INFO L290 TraceCheckUtils]: 15: Hoare triple {922#true} assume true; {922#true} is VALID [2022-04-28 07:28:25,321 INFO L290 TraceCheckUtils]: 14: Hoare triple {922#true} assume !(0 == ~cond); {922#true} is VALID [2022-04-28 07:28:25,321 INFO L290 TraceCheckUtils]: 13: Hoare triple {922#true} ~cond := #in~cond; {922#true} is VALID [2022-04-28 07:28:25,321 INFO L272 TraceCheckUtils]: 12: Hoare triple {922#true} call assume_abort_if_not((if ~b~0 >= 0 && ~b~0 <= 1 then 1 else 0)); {922#true} is VALID [2022-04-28 07:28:25,321 INFO L290 TraceCheckUtils]: 11: Hoare triple {922#true} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~b~0 := #t~nondet5;havoc #t~nondet5; {922#true} is VALID [2022-04-28 07:28:25,321 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {922#true} {922#true} #61#return; {922#true} is VALID [2022-04-28 07:28:25,321 INFO L290 TraceCheckUtils]: 9: Hoare triple {922#true} assume true; {922#true} is VALID [2022-04-28 07:28:25,322 INFO L290 TraceCheckUtils]: 8: Hoare triple {922#true} assume !(0 == ~cond); {922#true} is VALID [2022-04-28 07:28:25,322 INFO L290 TraceCheckUtils]: 7: Hoare triple {922#true} ~cond := #in~cond; {922#true} is VALID [2022-04-28 07:28:25,322 INFO L272 TraceCheckUtils]: 6: Hoare triple {922#true} call assume_abort_if_not((if ~a~0 >= 0 && ~a~0 <= 1 then 1 else 0)); {922#true} is VALID [2022-04-28 07:28:25,322 INFO L290 TraceCheckUtils]: 5: Hoare triple {922#true} havoc ~a~0;havoc ~b~0;havoc ~x~0;havoc ~y~0;havoc ~z~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~a~0 := #t~nondet4;havoc #t~nondet4; {922#true} is VALID [2022-04-28 07:28:25,322 INFO L272 TraceCheckUtils]: 4: Hoare triple {922#true} call #t~ret6 := main(); {922#true} is VALID [2022-04-28 07:28:25,322 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {922#true} {922#true} #71#return; {922#true} is VALID [2022-04-28 07:28:25,322 INFO L290 TraceCheckUtils]: 2: Hoare triple {922#true} assume true; {922#true} is VALID [2022-04-28 07:28:25,323 INFO L290 TraceCheckUtils]: 1: Hoare triple {922#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(13, 2);call #Ultimate.allocInit(12, 3); {922#true} is VALID [2022-04-28 07:28:25,323 INFO L272 TraceCheckUtils]: 0: Hoare triple {922#true} call ULTIMATE.init(); {922#true} is VALID [2022-04-28 07:28:25,323 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-28 07:28:25,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 07:28:25,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567716135] [2022-04-28 07:28:25,323 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 07:28:25,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655138768] [2022-04-28 07:28:25,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655138768] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-28 07:28:25,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-28 07:28:25,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 18 [2022-04-28 07:28:25,324 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 07:28:25,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [92277951] [2022-04-28 07:28:25,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [92277951] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 07:28:25,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 07:28:25,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-28 07:28:25,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832744680] [2022-04-28 07:28:25,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 07:28:25,325 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 11 states have internal predecessors, (22), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 37 [2022-04-28 07:28:25,326 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 07:28:25,326 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 11 states have internal predecessors, (22), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-28 07:28:25,360 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 34 edges. 34 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 07:28:25,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-28 07:28:25,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 07:28:25,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-28 07:28:25,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-04-28 07:28:25,361 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 11 states have internal predecessors, (22), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-28 07:28:25,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 07:28:25,859 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2022-04-28 07:28:25,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-28 07:28:25,859 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 11 states have internal predecessors, (22), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 37 [2022-04-28 07:28:25,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 07:28:25,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 11 states have internal predecessors, (22), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-28 07:28:25,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 48 transitions. [2022-04-28 07:28:25,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 11 states have internal predecessors, (22), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-28 07:28:25,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 48 transitions. [2022-04-28 07:28:25,863 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 11 states and 48 transitions. [2022-04-28 07:28:25,915 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 48 edges. 48 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 07:28:25,916 INFO L225 Difference]: With dead ends: 44 [2022-04-28 07:28:25,916 INFO L226 Difference]: Without dead ends: 0 [2022-04-28 07:28:25,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2022-04-28 07:28:25,917 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 18 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-28 07:28:25,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 108 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-28 07:28:25,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-28 07:28:25,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-28 07:28:25,918 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 07:28:25,918 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-28 07:28:25,918 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-28 07:28:25,919 INFO L87 Difference]: Start difference. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-28 07:28:25,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 07:28:25,919 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-28 07:28:25,919 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 07:28:25,919 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 07:28:25,919 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 07:28:25,919 INFO L74 IsIncluded]: Start isIncluded. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-28 07:28:25,919 INFO L87 Difference]: Start difference. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-28 07:28:25,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 07:28:25,919 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-28 07:28:25,919 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 07:28:25,920 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 07:28:25,920 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 07:28:25,920 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 07:28:25,920 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 07:28:25,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-28 07:28:25,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-28 07:28:25,920 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2022-04-28 07:28:25,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 07:28:25,920 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-28 07:28:25,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 11 states have internal predecessors, (22), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-28 07:28:25,921 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2022-04-28 07:28:25,921 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 07:28:25,921 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 07:28:25,921 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 07:28:25,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-28 07:28:25,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-28 07:28:26,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 07:28:26,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-28 07:28:26,473 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 6) no Hoare annotation was computed. [2022-04-28 07:28:26,473 INFO L899 garLoopResultBuilder]: For program point reach_errorENTRY(line 6) no Hoare annotation was computed. [2022-04-28 07:28:26,473 INFO L899 garLoopResultBuilder]: For program point reach_errorFINAL(line 6) no Hoare annotation was computed. [2022-04-28 07:28:26,473 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 9 11) the Hoare annotation is: true [2022-04-28 07:28:26,473 INFO L895 garLoopResultBuilder]: At program point L10(line 10) the Hoare annotation is: (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|) [2022-04-28 07:28:26,473 INFO L895 garLoopResultBuilder]: At program point L10-2(lines 9 11) the Hoare annotation is: (and (not (= |assume_abort_if_not_#in~cond| 0)) (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)) [2022-04-28 07:28:26,473 INFO L895 garLoopResultBuilder]: At program point assume_abort_if_notEXIT(lines 9 11) the Hoare annotation is: (and (not (= |assume_abort_if_not_#in~cond| 0)) (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)) [2022-04-28 07:28:26,474 INFO L902 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true [2022-04-28 07:28:26,474 INFO L895 garLoopResultBuilder]: At program point L27-1(line 27) the Hoare annotation is: (and (<= main_~b~0 1) (<= 0 main_~b~0)) [2022-04-28 07:28:26,474 INFO L902 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2022-04-28 07:28:26,474 INFO L902 garLoopResultBuilder]: At program point mainEXIT(lines 20 49) the Hoare annotation is: true [2022-04-28 07:28:26,474 INFO L902 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: true [2022-04-28 07:28:26,474 INFO L902 garLoopResultBuilder]: At program point L46(line 46) the Hoare annotation is: true [2022-04-28 07:28:26,474 INFO L902 garLoopResultBuilder]: At program point mainFINAL(lines 20 49) the Hoare annotation is: true [2022-04-28 07:28:26,474 INFO L895 garLoopResultBuilder]: At program point L34-2(lines 34 45) the Hoare annotation is: (let ((.cse0 (<= main_~b~0 1))) (or (and (= (+ main_~z~0 (* main_~y~0 main_~x~0)) (* main_~b~0 main_~a~0)) .cse0 (= main_~b~0 main_~y~0) (<= 1 main_~y~0) (= main_~a~0 main_~x~0)) (and (= main_~a~0 main_~z~0) .cse0 (= (* main_~a~0 2) main_~x~0) (<= 1 main_~b~0) (= (div (+ (- 1) main_~b~0) 2) main_~y~0)))) [2022-04-28 07:28:26,474 INFO L895 garLoopResultBuilder]: At program point L34-3(lines 34 45) the Hoare annotation is: (and (= main_~a~0 main_~z~0) (<= main_~b~0 1) (= (* main_~a~0 2) main_~x~0) (<= 1 main_~b~0) (= (div (+ (- 1) main_~b~0) 2) main_~y~0)) [2022-04-28 07:28:26,474 INFO L902 garLoopResultBuilder]: At program point mainENTRY(lines 20 49) the Hoare annotation is: true [2022-04-28 07:28:26,474 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (and (<= main_~b~0 1) (<= 1 main_~b~0)) [2022-04-28 07:28:26,475 INFO L895 garLoopResultBuilder]: At program point L39(lines 39 42) the Hoare annotation is: (and (= (+ main_~z~0 (* main_~y~0 main_~x~0)) (* main_~b~0 main_~a~0)) (<= main_~b~0 1) (= main_~b~0 main_~y~0) (<= 1 main_~b~0) (= main_~a~0 main_~x~0)) [2022-04-28 07:28:26,475 INFO L895 garLoopResultBuilder]: At program point L39-2(lines 39 42) the Hoare annotation is: (and (= main_~b~0 (+ main_~y~0 1)) (= (+ main_~z~0 (* main_~y~0 main_~x~0)) (* main_~b~0 main_~a~0)) (<= main_~b~0 1) (<= 1 main_~b~0) (= main_~a~0 main_~x~0)) [2022-04-28 07:28:26,475 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (<= main_~b~0 1))) (or (and (= (+ main_~z~0 (* main_~y~0 main_~x~0)) (* main_~b~0 main_~a~0)) .cse0 (= main_~b~0 main_~y~0) (<= 1 main_~y~0) (= main_~a~0 main_~x~0)) (and (= main_~a~0 main_~z~0) .cse0 (= (* main_~a~0 2) main_~x~0) (<= 1 main_~b~0) (= (div (+ (- 1) main_~b~0) 2) main_~y~0)))) [2022-04-28 07:28:26,476 INFO L895 garLoopResultBuilder]: At program point L35-1(lines 34 45) the Hoare annotation is: (let ((.cse0 (<= main_~b~0 1))) (or (and (= (+ main_~z~0 (* main_~y~0 main_~x~0)) (* main_~b~0 main_~a~0)) .cse0 (= main_~b~0 main_~y~0) (<= 1 main_~y~0) (= main_~a~0 main_~x~0)) (and (= main_~a~0 main_~z~0) .cse0 (= (* main_~a~0 2) main_~x~0) (<= 1 main_~b~0) (= (div (+ (- 1) main_~b~0) 2) main_~y~0)))) [2022-04-28 07:28:26,476 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-28 07:28:26,476 INFO L895 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-28 07:28:26,476 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-28 07:28:26,476 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-28 07:28:26,476 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-28 07:28:26,476 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-28 07:28:26,476 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-28 07:28:26,476 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 12 18) the Hoare annotation is: true [2022-04-28 07:28:26,476 INFO L895 garLoopResultBuilder]: At program point L14(lines 14 15) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-28 07:28:26,476 INFO L895 garLoopResultBuilder]: At program point L13(lines 13 16) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-28 07:28:26,477 INFO L895 garLoopResultBuilder]: At program point L13-2(lines 12 18) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-28 07:28:26,477 INFO L895 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 12 18) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-28 07:28:26,477 INFO L895 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-28 07:28:26,480 INFO L356 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2] [2022-04-28 07:28:26,481 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-28 07:28:26,485 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-28 07:28:26,486 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-28 07:28:26,504 INFO L163 areAnnotationChecker]: CFG has 40 edges. 40 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-28 07:28:26,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 07:28:26 BoogieIcfgContainer [2022-04-28 07:28:26,513 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-28 07:28:26,514 INFO L158 Benchmark]: Toolchain (without parser) took 63805.38ms. Allocated memory was 177.2MB in the beginning and 253.8MB in the end (delta: 76.5MB). Free memory was 128.6MB in the beginning and 100.1MB in the end (delta: 28.5MB). Peak memory consumption was 106.0MB. Max. memory is 8.0GB. [2022-04-28 07:28:26,514 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 177.2MB. Free memory is still 145.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-28 07:28:26,515 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.17ms. Allocated memory is still 177.2MB. Free memory was 128.3MB in the beginning and 155.7MB in the end (delta: -27.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-28 07:28:26,515 INFO L158 Benchmark]: Boogie Preprocessor took 42.47ms. Allocated memory is still 177.2MB. Free memory was 155.7MB in the beginning and 154.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-28 07:28:26,515 INFO L158 Benchmark]: RCFGBuilder took 269.82ms. Allocated memory is still 177.2MB. Free memory was 154.2MB in the beginning and 143.0MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-28 07:28:26,516 INFO L158 Benchmark]: TraceAbstraction took 63279.15ms. Allocated memory was 177.2MB in the beginning and 253.8MB in the end (delta: 76.5MB). Free memory was 142.4MB in the beginning and 100.6MB in the end (delta: 41.8MB). Peak memory consumption was 119.9MB. Max. memory is 8.0GB. [2022-04-28 07:28:26,517 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 0.10ms. Allocated memory is still 177.2MB. Free memory is still 145.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 209.17ms. Allocated memory is still 177.2MB. Free memory was 128.3MB in the beginning and 155.7MB in the end (delta: -27.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.47ms. Allocated memory is still 177.2MB. Free memory was 155.7MB in the beginning and 154.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 269.82ms. Allocated memory is still 177.2MB. Free memory was 154.2MB in the beginning and 143.0MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 63279.15ms. Allocated memory was 177.2MB in the beginning and 253.8MB in the end (delta: 76.5MB). Free memory was 142.4MB in the beginning and 100.6MB in the end (delta: 41.8MB). Peak memory consumption was 119.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 63.2s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 67 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 59 mSDsluCounter, 318 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 220 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 263 IncrementalHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 98 mSDtfsCounter, 263 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=3, InterpolantAutomatonStates: 25, 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, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 32 LocationsWithAnnotation, 90 PreInvPairs, 126 NumberOfFragments, 290 HoareAnnotationTreeSize, 90 FomulaSimplifications, 72 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 32 FomulaSimplificationsInter, 109 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((z + y * x == b * a && b <= 1) && b == y) && 1 <= y) && a == x) || ((((a == z && b <= 1) && a * 2 == x) && 1 <= b) && (-1 + b) / 2 == y) - ProcedureContractResult [Line: 9]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not: !(\old(cond) == 0) && cond == \old(cond) - ProcedureContractResult [Line: 20]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 12]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == cond || !(1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2022-04-28 07:28:26,538 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...