/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/divbin_unwindbound5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-e106359-m [2022-04-15 08:13:26,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-15 08:13:26,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-15 08:13:26,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-15 08:13:26,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-15 08:13:26,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-15 08:13:26,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-15 08:13:26,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-15 08:13:26,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-15 08:13:26,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-15 08:13:26,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-15 08:13:26,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-15 08:13:26,792 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-15 08:13:26,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-15 08:13:26,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-15 08:13:26,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-15 08:13:26,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-15 08:13:26,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-15 08:13:26,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-15 08:13:26,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-15 08:13:26,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-15 08:13:26,804 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-15 08:13:26,810 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-15 08:13:26,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-15 08:13:26,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-15 08:13:26,811 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-15 08:13:26,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-15 08:13:26,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-15 08:13:26,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-15 08:13:26,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-15 08:13:26,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-15 08:13:26,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-15 08:13:26,812 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-15 08:13:26,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-15 08:13:26,812 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-15 08:13:26,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-15 08:13:26,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-15 08:13:26,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-15 08:13:26,813 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-15 08:13:26,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-15 08:13:26,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 08:13:26,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-15 08:13:26,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-15 08:13:26,813 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-15 08:13:26,813 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-15 08:13:26,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-15 08:13:26,813 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-15 08:13:26,813 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-15 08:13:27,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-15 08:13:27,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-15 08:13:27,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-15 08:13:27,089 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-15 08:13:27,091 INFO L275 PluginConnector]: CDTParser initialized [2022-04-15 08:13:27,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound5.i [2022-04-15 08:13:27,149 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e05d5170b/252daa24786f44b89ef975aefc747864/FLAG068fc3df0 [2022-04-15 08:13:27,554 INFO L306 CDTParser]: Found 1 translation units. [2022-04-15 08:13:27,554 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound5.i [2022-04-15 08:13:27,559 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e05d5170b/252daa24786f44b89ef975aefc747864/FLAG068fc3df0 [2022-04-15 08:13:27,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e05d5170b/252daa24786f44b89ef975aefc747864 [2022-04-15 08:13:27,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-15 08:13:27,578 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-15 08:13:27,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-15 08:13:27,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-15 08:13:27,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-15 08:13:27,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 08:13:27" (1/1) ... [2022-04-15 08:13:27,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a60bb9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 08:13:27, skipping insertion in model container [2022-04-15 08:13:27,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 08:13:27" (1/1) ... [2022-04-15 08:13:27,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-15 08:13:27,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-15 08:13:27,771 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/divbin_unwindbound5.i[950,963] [2022-04-15 08:13:27,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 08:13:27,805 INFO L203 MainTranslator]: Completed pre-run [2022-04-15 08:13:27,814 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/divbin_unwindbound5.i[950,963] [2022-04-15 08:13:27,828 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 08:13:27,843 INFO L208 MainTranslator]: Completed translation [2022-04-15 08:13:27,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 08:13:27 WrapperNode [2022-04-15 08:13:27,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-15 08:13:27,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-15 08:13:27,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-15 08:13:27,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-15 08:13:27,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 08:13:27" (1/1) ... [2022-04-15 08:13:27,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 08:13:27" (1/1) ... [2022-04-15 08:13:27,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 08:13:27" (1/1) ... [2022-04-15 08:13:27,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 08:13:27" (1/1) ... [2022-04-15 08:13:27,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 08:13:27" (1/1) ... [2022-04-15 08:13:27,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 08:13:27" (1/1) ... [2022-04-15 08:13:27,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 08:13:27" (1/1) ... [2022-04-15 08:13:27,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-15 08:13:27,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-15 08:13:27,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-15 08:13:27,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-15 08:13:27,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 08:13:27" (1/1) ... [2022-04-15 08:13:27,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 08:13:27,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 08:13:27,936 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-15 08:13:27,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-15 08:13:27,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-15 08:13:27,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-15 08:13:27,984 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-15 08:13:27,984 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-15 08:13:27,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-15 08:13:27,985 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-15 08:13:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-15 08:13:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-15 08:13:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-15 08:13:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-15 08:13:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-15 08:13:27,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-15 08:13:27,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-15 08:13:27,986 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-15 08:13:27,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-15 08:13:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-15 08:13:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-15 08:13:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-15 08:13:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-15 08:13:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-15 08:13:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-15 08:13:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-15 08:13:28,055 INFO L234 CfgBuilder]: Building ICFG [2022-04-15 08:13:28,056 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-15 08:13:28,222 INFO L275 CfgBuilder]: Performing block encoding [2022-04-15 08:13:28,241 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-15 08:13:28,241 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-15 08:13:28,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 08:13:28 BoogieIcfgContainer [2022-04-15 08:13:28,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-15 08:13:28,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-15 08:13:28,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-15 08:13:28,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-15 08:13:28,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.04 08:13:27" (1/3) ... [2022-04-15 08:13:28,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f77d238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 08:13:28, skipping insertion in model container [2022-04-15 08:13:28,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 08:13:27" (2/3) ... [2022-04-15 08:13:28,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f77d238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 08:13:28, skipping insertion in model container [2022-04-15 08:13:28,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 08:13:28" (3/3) ... [2022-04-15 08:13:28,249 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_unwindbound5.i [2022-04-15 08:13:28,252 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-15 08:13:28,252 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-15 08:13:28,306 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-15 08:13:28,313 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-15 08:13:28,313 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-15 08:13:28,340 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-15 08:13:28,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-15 08:13:28,345 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 08:13:28,346 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 08:13:28,346 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 08:13:28,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 08:13:28,351 INFO L85 PathProgramCache]: Analyzing trace with hash 878397729, now seen corresponding path program 1 times [2022-04-15 08:13:28,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 08:13:28,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1759782366] [2022-04-15 08:13:28,366 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 08:13:28,367 INFO L85 PathProgramCache]: Analyzing trace with hash 878397729, now seen corresponding path program 2 times [2022-04-15 08:13:28,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 08:13:28,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584433234] [2022-04-15 08:13:28,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 08:13:28,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 08:13:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 08:13:28,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 08:13:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 08:13:28,565 INFO L290 TraceCheckUtils]: 0: Hoare triple {49#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~counter~0 := 0; {36#true} is VALID [2022-04-15 08:13:28,566 INFO L290 TraceCheckUtils]: 1: Hoare triple {36#true} assume true; {36#true} is VALID [2022-04-15 08:13:28,566 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {36#true} {36#true} #89#return; {36#true} is VALID [2022-04-15 08:13:28,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-15 08:13:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 08:13:28,588 INFO L290 TraceCheckUtils]: 0: Hoare triple {36#true} ~cond := #in~cond; {36#true} is VALID [2022-04-15 08:13:28,588 INFO L290 TraceCheckUtils]: 1: Hoare triple {36#true} assume 0 == ~cond;assume false; {37#false} is VALID [2022-04-15 08:13:28,589 INFO L290 TraceCheckUtils]: 2: Hoare triple {37#false} assume true; {37#false} is VALID [2022-04-15 08:13:28,589 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {37#false} {36#true} #81#return; {37#false} is VALID [2022-04-15 08:13:28,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-15 08:13:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 08:13:28,600 INFO L290 TraceCheckUtils]: 0: Hoare triple {36#true} ~cond := #in~cond; {36#true} is VALID [2022-04-15 08:13:28,601 INFO L290 TraceCheckUtils]: 1: Hoare triple {36#true} assume 0 == ~cond;assume false; {37#false} is VALID [2022-04-15 08:13:28,601 INFO L290 TraceCheckUtils]: 2: Hoare triple {37#false} assume true; {37#false} is VALID [2022-04-15 08:13:28,602 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {37#false} {37#false} #83#return; {37#false} is VALID [2022-04-15 08:13:28,603 INFO L272 TraceCheckUtils]: 0: Hoare triple {36#true} call ULTIMATE.init(); {49#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 08:13:28,603 INFO L290 TraceCheckUtils]: 1: Hoare triple {49#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~counter~0 := 0; {36#true} is VALID [2022-04-15 08:13:28,603 INFO L290 TraceCheckUtils]: 2: Hoare triple {36#true} assume true; {36#true} is VALID [2022-04-15 08:13:28,603 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {36#true} {36#true} #89#return; {36#true} is VALID [2022-04-15 08:13:28,604 INFO L272 TraceCheckUtils]: 4: Hoare triple {36#true} call #t~ret5 := main(); {36#true} is VALID [2022-04-15 08:13:28,606 INFO L290 TraceCheckUtils]: 5: Hoare triple {36#true} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {36#true} is VALID [2022-04-15 08:13:28,606 INFO L272 TraceCheckUtils]: 6: Hoare triple {36#true} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {36#true} is VALID [2022-04-15 08:13:28,606 INFO L290 TraceCheckUtils]: 7: Hoare triple {36#true} ~cond := #in~cond; {36#true} is VALID [2022-04-15 08:13:28,607 INFO L290 TraceCheckUtils]: 8: Hoare triple {36#true} assume 0 == ~cond;assume false; {37#false} is VALID [2022-04-15 08:13:28,607 INFO L290 TraceCheckUtils]: 9: Hoare triple {37#false} assume true; {37#false} is VALID [2022-04-15 08:13:28,607 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {37#false} {36#true} #81#return; {37#false} is VALID [2022-04-15 08:13:28,607 INFO L272 TraceCheckUtils]: 11: Hoare triple {37#false} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {36#true} is VALID [2022-04-15 08:13:28,608 INFO L290 TraceCheckUtils]: 12: Hoare triple {36#true} ~cond := #in~cond; {36#true} is VALID [2022-04-15 08:13:28,608 INFO L290 TraceCheckUtils]: 13: Hoare triple {36#true} assume 0 == ~cond;assume false; {37#false} is VALID [2022-04-15 08:13:28,608 INFO L290 TraceCheckUtils]: 14: Hoare triple {37#false} assume true; {37#false} is VALID [2022-04-15 08:13:28,608 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {37#false} {37#false} #83#return; {37#false} is VALID [2022-04-15 08:13:28,609 INFO L290 TraceCheckUtils]: 16: Hoare triple {37#false} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {37#false} is VALID [2022-04-15 08:13:28,609 INFO L290 TraceCheckUtils]: 17: Hoare triple {37#false} assume !true; {37#false} is VALID [2022-04-15 08:13:28,609 INFO L290 TraceCheckUtils]: 18: Hoare triple {37#false} assume !true; {37#false} is VALID [2022-04-15 08:13:28,610 INFO L272 TraceCheckUtils]: 19: Hoare triple {37#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {37#false} is VALID [2022-04-15 08:13:28,610 INFO L290 TraceCheckUtils]: 20: Hoare triple {37#false} ~cond := #in~cond; {37#false} is VALID [2022-04-15 08:13:28,610 INFO L290 TraceCheckUtils]: 21: Hoare triple {37#false} assume 0 == ~cond; {37#false} is VALID [2022-04-15 08:13:28,611 INFO L290 TraceCheckUtils]: 22: Hoare triple {37#false} assume !false; {37#false} is VALID [2022-04-15 08:13:28,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-15 08:13:28,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 08:13:28,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584433234] [2022-04-15 08:13:28,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584433234] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 08:13:28,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 08:13:28,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-15 08:13:28,616 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 08:13:28,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1759782366] [2022-04-15 08:13:28,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1759782366] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 08:13:28,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 08:13:28,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-15 08:13:28,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002147940] [2022-04-15 08:13:28,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 08:13:28,622 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-04-15 08:13:28,624 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 08:13:28,626 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 08:13:28,658 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 08:13:28,658 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-15 08:13:28,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 08:13:28,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-15 08:13:28,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-15 08:13:28,679 INFO L87 Difference]: Start difference. First operand has 33 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 08:13:28,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 08:13:28,834 INFO L93 Difference]: Finished difference Result 60 states and 84 transitions. [2022-04-15 08:13:28,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-15 08:13:28,835 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-04-15 08:13:28,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 08:13:28,836 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 08:13:28,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2022-04-15 08:13:28,845 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 08:13:28,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2022-04-15 08:13:28,856 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 84 transitions. [2022-04-15 08:13:28,941 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 84 edges. 84 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 08:13:28,947 INFO L225 Difference]: With dead ends: 60 [2022-04-15 08:13:28,947 INFO L226 Difference]: Without dead ends: 29 [2022-04-15 08:13:28,949 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-15 08:13:28,951 INFO L913 BasicCegarLoop]: 36 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 08:13:28,951 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 40 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 08:13:28,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-04-15 08:13:28,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2022-04-15 08:13:28,975 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 08:13:28,976 INFO L82 GeneralOperation]: Start isEquivalent. First operand 29 states. Second operand has 28 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 08:13:28,976 INFO L74 IsIncluded]: Start isIncluded. First operand 29 states. Second operand has 28 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 08:13:28,977 INFO L87 Difference]: Start difference. First operand 29 states. Second operand has 28 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 08:13:28,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 08:13:28,980 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2022-04-15 08:13:28,980 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-04-15 08:13:28,981 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 08:13:28,981 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 08:13:28,981 INFO L74 IsIncluded]: Start isIncluded. First operand has 28 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 29 states. [2022-04-15 08:13:28,982 INFO L87 Difference]: Start difference. First operand has 28 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 29 states. [2022-04-15 08:13:28,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 08:13:28,984 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2022-04-15 08:13:28,984 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-04-15 08:13:28,985 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 08:13:28,985 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 08:13:28,985 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 08:13:28,985 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 08:13:28,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 08:13:28,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2022-04-15 08:13:28,988 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 23 [2022-04-15 08:13:28,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 08:13:28,989 INFO L478 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2022-04-15 08:13:28,989 INFO L479 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 08:13:28,989 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 28 states and 34 transitions. [2022-04-15 08:13:29,021 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 34 edges. 34 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 08:13:29,021 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2022-04-15 08:13:29,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-04-15 08:13:29,022 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 08:13:29,022 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 08:13:29,022 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-15 08:13:29,023 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 08:13:29,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 08:13:29,023 INFO L85 PathProgramCache]: Analyzing trace with hash 994169231, now seen corresponding path program 1 times [2022-04-15 08:13:29,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 08:13:29,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1159260487] [2022-04-15 08:13:29,024 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 08:13:29,024 INFO L85 PathProgramCache]: Analyzing trace with hash 994169231, now seen corresponding path program 2 times [2022-04-15 08:13:29,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 08:13:29,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227978905] [2022-04-15 08:13:29,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 08:13:29,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 08:13:29,049 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 08:13:29,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1400627564] [2022-04-15 08:13:29,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-15 08:13:29,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 08:13:29,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 08:13:29,051 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 08:13:29,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-15 08:13:29,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-15 08:13:29,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-15 08:13:29,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-15 08:13:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 08:13:29,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 08:13:29,351 INFO L272 TraceCheckUtils]: 0: Hoare triple {286#true} call ULTIMATE.init(); {286#true} is VALID [2022-04-15 08:13:29,352 INFO L290 TraceCheckUtils]: 1: Hoare triple {286#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~counter~0 := 0; {294#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:29,352 INFO L290 TraceCheckUtils]: 2: Hoare triple {294#(<= ~counter~0 0)} assume true; {294#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:29,352 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {294#(<= ~counter~0 0)} {286#true} #89#return; {294#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:29,353 INFO L272 TraceCheckUtils]: 4: Hoare triple {294#(<= ~counter~0 0)} call #t~ret5 := main(); {294#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:29,353 INFO L290 TraceCheckUtils]: 5: Hoare triple {294#(<= ~counter~0 0)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {294#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:29,354 INFO L272 TraceCheckUtils]: 6: Hoare triple {294#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {294#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:29,354 INFO L290 TraceCheckUtils]: 7: Hoare triple {294#(<= ~counter~0 0)} ~cond := #in~cond; {294#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:29,355 INFO L290 TraceCheckUtils]: 8: Hoare triple {294#(<= ~counter~0 0)} assume !(0 == ~cond); {294#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:29,355 INFO L290 TraceCheckUtils]: 9: Hoare triple {294#(<= ~counter~0 0)} assume true; {294#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:29,355 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {294#(<= ~counter~0 0)} {294#(<= ~counter~0 0)} #81#return; {294#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:29,356 INFO L272 TraceCheckUtils]: 11: Hoare triple {294#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {294#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:29,356 INFO L290 TraceCheckUtils]: 12: Hoare triple {294#(<= ~counter~0 0)} ~cond := #in~cond; {294#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:29,357 INFO L290 TraceCheckUtils]: 13: Hoare triple {294#(<= ~counter~0 0)} assume !(0 == ~cond); {294#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:29,357 INFO L290 TraceCheckUtils]: 14: Hoare triple {294#(<= ~counter~0 0)} assume true; {294#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:29,358 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {294#(<= ~counter~0 0)} {294#(<= ~counter~0 0)} #83#return; {294#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:29,358 INFO L290 TraceCheckUtils]: 16: Hoare triple {294#(<= ~counter~0 0)} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {294#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:29,358 INFO L290 TraceCheckUtils]: 17: Hoare triple {294#(<= ~counter~0 0)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {343#(<= |main_#t~post3| 0)} is VALID [2022-04-15 08:13:29,359 INFO L290 TraceCheckUtils]: 18: Hoare triple {343#(<= |main_#t~post3| 0)} assume !(#t~post3 < 5);havoc #t~post3; {287#false} is VALID [2022-04-15 08:13:29,359 INFO L290 TraceCheckUtils]: 19: Hoare triple {287#false} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {287#false} is VALID [2022-04-15 08:13:29,359 INFO L290 TraceCheckUtils]: 20: Hoare triple {287#false} assume !(#t~post4 < 5);havoc #t~post4; {287#false} is VALID [2022-04-15 08:13:29,359 INFO L272 TraceCheckUtils]: 21: Hoare triple {287#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {287#false} is VALID [2022-04-15 08:13:29,360 INFO L290 TraceCheckUtils]: 22: Hoare triple {287#false} ~cond := #in~cond; {287#false} is VALID [2022-04-15 08:13:29,360 INFO L290 TraceCheckUtils]: 23: Hoare triple {287#false} assume 0 == ~cond; {287#false} is VALID [2022-04-15 08:13:29,381 INFO L290 TraceCheckUtils]: 24: Hoare triple {287#false} assume !false; {287#false} is VALID [2022-04-15 08:13:29,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-15 08:13:29,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-15 08:13:29,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 08:13:29,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227978905] [2022-04-15 08:13:29,382 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-15 08:13:29,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400627564] [2022-04-15 08:13:29,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400627564] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 08:13:29,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 08:13:29,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-15 08:13:29,383 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 08:13:29,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1159260487] [2022-04-15 08:13:29,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1159260487] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 08:13:29,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 08:13:29,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-15 08:13:29,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525914324] [2022-04-15 08:13:29,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 08:13:29,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-04-15 08:13:29,387 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 08:13:29,387 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 08:13:29,406 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 08:13:29,406 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-15 08:13:29,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 08:13:29,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-15 08:13:29,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-15 08:13:29,407 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 08:13:29,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 08:13:29,486 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2022-04-15 08:13:29,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-15 08:13:29,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-04-15 08:13:29,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 08:13:29,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 08:13:29,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2022-04-15 08:13:29,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 08:13:29,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2022-04-15 08:13:29,489 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 52 transitions. [2022-04-15 08:13:29,525 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 52 edges. 52 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 08:13:29,528 INFO L225 Difference]: With dead ends: 42 [2022-04-15 08:13:29,528 INFO L226 Difference]: Without dead ends: 30 [2022-04-15 08:13:29,531 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-15 08:13:29,533 INFO L913 BasicCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 08:13:29,536 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 08:13:29,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-04-15 08:13:29,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-04-15 08:13:29,560 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 08:13:29,561 INFO L82 GeneralOperation]: Start isEquivalent. First operand 30 states. Second operand has 30 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 08:13:29,561 INFO L74 IsIncluded]: Start isIncluded. First operand 30 states. Second operand has 30 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 08:13:29,562 INFO L87 Difference]: Start difference. First operand 30 states. Second operand has 30 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 08:13:29,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 08:13:29,569 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2022-04-15 08:13:29,569 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-04-15 08:13:29,572 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 08:13:29,572 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 08:13:29,572 INFO L74 IsIncluded]: Start isIncluded. First operand has 30 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 30 states. [2022-04-15 08:13:29,573 INFO L87 Difference]: Start difference. First operand has 30 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 30 states. [2022-04-15 08:13:29,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 08:13:29,576 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2022-04-15 08:13:29,577 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-04-15 08:13:29,577 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 08:13:29,577 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 08:13:29,577 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 08:13:29,577 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 08:13:29,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 08:13:29,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2022-04-15 08:13:29,578 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 25 [2022-04-15 08:13:29,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 08:13:29,579 INFO L478 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-04-15 08:13:29,579 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 08:13:29,579 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 30 states and 36 transitions. [2022-04-15 08:13:29,622 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 08:13:29,623 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-04-15 08:13:29,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-04-15 08:13:29,627 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 08:13:29,627 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 08:13:29,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-15 08:13:29,827 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 08:13:29,828 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 08:13:29,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 08:13:29,828 INFO L85 PathProgramCache]: Analyzing trace with hash 422434646, now seen corresponding path program 1 times [2022-04-15 08:13:29,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 08:13:29,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1871086525] [2022-04-15 08:13:29,829 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 08:13:29,829 INFO L85 PathProgramCache]: Analyzing trace with hash 422434646, now seen corresponding path program 2 times [2022-04-15 08:13:29,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 08:13:29,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304729560] [2022-04-15 08:13:29,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 08:13:29,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 08:13:29,853 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 08:13:29,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888262818] [2022-04-15 08:13:29,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-15 08:13:29,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 08:13:29,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 08:13:29,855 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 08:13:29,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-15 08:13:29,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-15 08:13:29,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-15 08:13:29,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-15 08:13:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 08:13:29,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 08:13:30,057 INFO L272 TraceCheckUtils]: 0: Hoare triple {568#true} call ULTIMATE.init(); {568#true} is VALID [2022-04-15 08:13:30,058 INFO L290 TraceCheckUtils]: 1: Hoare triple {568#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~counter~0 := 0; {576#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:30,058 INFO L290 TraceCheckUtils]: 2: Hoare triple {576#(<= ~counter~0 0)} assume true; {576#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:30,059 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {576#(<= ~counter~0 0)} {568#true} #89#return; {576#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:30,059 INFO L272 TraceCheckUtils]: 4: Hoare triple {576#(<= ~counter~0 0)} call #t~ret5 := main(); {576#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:30,060 INFO L290 TraceCheckUtils]: 5: Hoare triple {576#(<= ~counter~0 0)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {576#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:30,060 INFO L272 TraceCheckUtils]: 6: Hoare triple {576#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {576#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:30,061 INFO L290 TraceCheckUtils]: 7: Hoare triple {576#(<= ~counter~0 0)} ~cond := #in~cond; {576#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:30,061 INFO L290 TraceCheckUtils]: 8: Hoare triple {576#(<= ~counter~0 0)} assume !(0 == ~cond); {576#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:30,061 INFO L290 TraceCheckUtils]: 9: Hoare triple {576#(<= ~counter~0 0)} assume true; {576#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:30,062 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {576#(<= ~counter~0 0)} {576#(<= ~counter~0 0)} #81#return; {576#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:30,062 INFO L272 TraceCheckUtils]: 11: Hoare triple {576#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {576#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:30,063 INFO L290 TraceCheckUtils]: 12: Hoare triple {576#(<= ~counter~0 0)} ~cond := #in~cond; {576#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:30,063 INFO L290 TraceCheckUtils]: 13: Hoare triple {576#(<= ~counter~0 0)} assume !(0 == ~cond); {576#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:30,063 INFO L290 TraceCheckUtils]: 14: Hoare triple {576#(<= ~counter~0 0)} assume true; {576#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:30,064 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {576#(<= ~counter~0 0)} {576#(<= ~counter~0 0)} #83#return; {576#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:30,064 INFO L290 TraceCheckUtils]: 16: Hoare triple {576#(<= ~counter~0 0)} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {576#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:30,065 INFO L290 TraceCheckUtils]: 17: Hoare triple {576#(<= ~counter~0 0)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {625#(<= ~counter~0 1)} is VALID [2022-04-15 08:13:30,065 INFO L290 TraceCheckUtils]: 18: Hoare triple {625#(<= ~counter~0 1)} assume !!(#t~post3 < 5);havoc #t~post3; {625#(<= ~counter~0 1)} is VALID [2022-04-15 08:13:30,065 INFO L290 TraceCheckUtils]: 19: Hoare triple {625#(<= ~counter~0 1)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {625#(<= ~counter~0 1)} is VALID [2022-04-15 08:13:30,066 INFO L290 TraceCheckUtils]: 20: Hoare triple {625#(<= ~counter~0 1)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {635#(<= |main_#t~post4| 1)} is VALID [2022-04-15 08:13:30,066 INFO L290 TraceCheckUtils]: 21: Hoare triple {635#(<= |main_#t~post4| 1)} assume !(#t~post4 < 5);havoc #t~post4; {569#false} is VALID [2022-04-15 08:13:30,066 INFO L272 TraceCheckUtils]: 22: Hoare triple {569#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {569#false} is VALID [2022-04-15 08:13:30,067 INFO L290 TraceCheckUtils]: 23: Hoare triple {569#false} ~cond := #in~cond; {569#false} is VALID [2022-04-15 08:13:30,067 INFO L290 TraceCheckUtils]: 24: Hoare triple {569#false} assume 0 == ~cond; {569#false} is VALID [2022-04-15 08:13:30,067 INFO L290 TraceCheckUtils]: 25: Hoare triple {569#false} assume !false; {569#false} is VALID [2022-04-15 08:13:30,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-15 08:13:30,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-15 08:13:30,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 08:13:30,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304729560] [2022-04-15 08:13:30,068 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-15 08:13:30,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888262818] [2022-04-15 08:13:30,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888262818] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 08:13:30,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 08:13:30,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-15 08:13:30,068 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 08:13:30,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1871086525] [2022-04-15 08:13:30,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1871086525] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 08:13:30,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 08:13:30,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-15 08:13:30,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408243435] [2022-04-15 08:13:30,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 08:13:30,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2022-04-15 08:13:30,069 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 08:13:30,069 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 08:13:30,087 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 08:13:30,087 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-15 08:13:30,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 08:13:30,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-15 08:13:30,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-15 08:13:30,088 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 08:13:32,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 08:13:32,275 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-04-15 08:13:32,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-15 08:13:32,275 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2022-04-15 08:13:32,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 08:13:32,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 08:13:32,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 48 transitions. [2022-04-15 08:13:32,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 08:13:32,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 48 transitions. [2022-04-15 08:13:32,278 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 48 transitions. [2022-04-15 08:13:32,316 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 48 edges. 48 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 08:13:32,317 INFO L225 Difference]: With dead ends: 41 [2022-04-15 08:13:32,317 INFO L226 Difference]: Without dead ends: 34 [2022-04-15 08:13:32,317 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-15 08:13:32,318 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 7 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 08:13:32,318 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 82 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 08:13:32,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-04-15 08:13:32,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-04-15 08:13:32,352 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 08:13:32,352 INFO L82 GeneralOperation]: Start isEquivalent. First operand 34 states. Second operand has 33 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 08:13:32,353 INFO L74 IsIncluded]: Start isIncluded. First operand 34 states. Second operand has 33 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 08:13:32,353 INFO L87 Difference]: Start difference. First operand 34 states. Second operand has 33 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 08:13:32,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 08:13:32,355 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2022-04-15 08:13:32,355 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2022-04-15 08:13:32,355 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 08:13:32,355 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 08:13:32,356 INFO L74 IsIncluded]: Start isIncluded. First operand has 33 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 34 states. [2022-04-15 08:13:32,356 INFO L87 Difference]: Start difference. First operand has 33 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 34 states. [2022-04-15 08:13:32,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 08:13:32,358 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2022-04-15 08:13:32,358 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2022-04-15 08:13:32,358 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 08:13:32,358 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 08:13:32,358 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 08:13:32,358 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 08:13:32,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 08:13:32,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-04-15 08:13:32,360 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 26 [2022-04-15 08:13:32,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 08:13:32,361 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-04-15 08:13:32,361 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 08:13:32,361 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 33 states and 40 transitions. [2022-04-15 08:13:32,400 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 40 edges. 40 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 08:13:32,401 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2022-04-15 08:13:32,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-04-15 08:13:32,401 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 08:13:32,401 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 08:13:32,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-15 08:13:32,618 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-15 08:13:32,618 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 08:13:32,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 08:13:32,618 INFO L85 PathProgramCache]: Analyzing trace with hash 424222106, now seen corresponding path program 1 times [2022-04-15 08:13:32,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 08:13:32,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1840565902] [2022-04-15 08:13:32,619 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 08:13:32,619 INFO L85 PathProgramCache]: Analyzing trace with hash 424222106, now seen corresponding path program 2 times [2022-04-15 08:13:32,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 08:13:32,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682658023] [2022-04-15 08:13:32,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 08:13:32,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 08:13:32,634 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 08:13:32,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1380961009] [2022-04-15 08:13:32,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-15 08:13:32,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 08:13:32,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 08:13:32,635 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 08:13:32,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-15 08:13:32,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-15 08:13:32,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-15 08:13:32,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-15 08:13:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 08:13:32,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 08:13:33,228 INFO L272 TraceCheckUtils]: 0: Hoare triple {866#true} call ULTIMATE.init(); {866#true} is VALID [2022-04-15 08:13:33,228 INFO L290 TraceCheckUtils]: 1: Hoare triple {866#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~counter~0 := 0; {866#true} is VALID [2022-04-15 08:13:33,228 INFO L290 TraceCheckUtils]: 2: Hoare triple {866#true} assume true; {866#true} is VALID [2022-04-15 08:13:33,229 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {866#true} {866#true} #89#return; {866#true} is VALID [2022-04-15 08:13:33,229 INFO L272 TraceCheckUtils]: 4: Hoare triple {866#true} call #t~ret5 := main(); {866#true} is VALID [2022-04-15 08:13:33,229 INFO L290 TraceCheckUtils]: 5: Hoare triple {866#true} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {866#true} is VALID [2022-04-15 08:13:33,229 INFO L272 TraceCheckUtils]: 6: Hoare triple {866#true} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {866#true} is VALID [2022-04-15 08:13:33,229 INFO L290 TraceCheckUtils]: 7: Hoare triple {866#true} ~cond := #in~cond; {866#true} is VALID [2022-04-15 08:13:33,229 INFO L290 TraceCheckUtils]: 8: Hoare triple {866#true} assume !(0 == ~cond); {866#true} is VALID [2022-04-15 08:13:33,229 INFO L290 TraceCheckUtils]: 9: Hoare triple {866#true} assume true; {866#true} is VALID [2022-04-15 08:13:33,229 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {866#true} {866#true} #81#return; {866#true} is VALID [2022-04-15 08:13:33,230 INFO L272 TraceCheckUtils]: 11: Hoare triple {866#true} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {866#true} is VALID [2022-04-15 08:13:33,230 INFO L290 TraceCheckUtils]: 12: Hoare triple {866#true} ~cond := #in~cond; {866#true} is VALID [2022-04-15 08:13:33,230 INFO L290 TraceCheckUtils]: 13: Hoare triple {866#true} assume !(0 == ~cond); {866#true} is VALID [2022-04-15 08:13:33,230 INFO L290 TraceCheckUtils]: 14: Hoare triple {866#true} assume true; {866#true} is VALID [2022-04-15 08:13:33,230 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {866#true} {866#true} #83#return; {866#true} is VALID [2022-04-15 08:13:33,234 INFO L290 TraceCheckUtils]: 16: Hoare triple {866#true} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {919#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-15 08:13:33,248 INFO L290 TraceCheckUtils]: 17: Hoare triple {919#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {919#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-15 08:13:33,248 INFO L290 TraceCheckUtils]: 18: Hoare triple {919#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !!(#t~post3 < 5);havoc #t~post3; {919#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-15 08:13:33,249 INFO L290 TraceCheckUtils]: 19: Hoare triple {919#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {929#(and (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-15 08:13:33,249 INFO L290 TraceCheckUtils]: 20: Hoare triple {929#(and (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {929#(and (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-15 08:13:33,250 INFO L290 TraceCheckUtils]: 21: Hoare triple {929#(and (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !!(#t~post4 < 5);havoc #t~post4; {929#(and (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-15 08:13:33,251 INFO L272 TraceCheckUtils]: 22: Hoare triple {929#(and (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {939#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 08:13:33,251 INFO L290 TraceCheckUtils]: 23: Hoare triple {939#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {943#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 08:13:33,251 INFO L290 TraceCheckUtils]: 24: Hoare triple {943#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {867#false} is VALID [2022-04-15 08:13:33,251 INFO L290 TraceCheckUtils]: 25: Hoare triple {867#false} assume !false; {867#false} is VALID [2022-04-15 08:13:33,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-15 08:13:33,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-15 08:13:33,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 08:13:33,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682658023] [2022-04-15 08:13:33,252 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-15 08:13:33,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380961009] [2022-04-15 08:13:33,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380961009] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 08:13:33,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 08:13:33,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-15 08:13:33,253 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 08:13:33,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1840565902] [2022-04-15 08:13:33,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1840565902] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 08:13:33,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 08:13:33,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-15 08:13:33,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127855912] [2022-04-15 08:13:33,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 08:13:33,254 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2022-04-15 08:13:33,254 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 08:13:33,254 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-15 08:13:33,273 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 08:13:33,273 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-15 08:13:33,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 08:13:33,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-15 08:13:33,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-15 08:13:33,274 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-15 08:13:33,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 08:13:33,546 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2022-04-15 08:13:33,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-15 08:13:33,547 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2022-04-15 08:13:33,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 08:13:33,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-15 08:13:33,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 57 transitions. [2022-04-15 08:13:33,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-15 08:13:33,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 57 transitions. [2022-04-15 08:13:33,551 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 57 transitions. [2022-04-15 08:13:33,615 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 57 edges. 57 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 08:13:33,617 INFO L225 Difference]: With dead ends: 50 [2022-04-15 08:13:33,617 INFO L226 Difference]: Without dead ends: 46 [2022-04-15 08:13:33,617 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-04-15 08:13:33,619 INFO L913 BasicCegarLoop]: 28 mSDtfsCounter, 18 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-15 08:13:33,620 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 104 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-15 08:13:33,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-04-15 08:13:33,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 39. [2022-04-15 08:13:33,650 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 08:13:33,651 INFO L82 GeneralOperation]: Start isEquivalent. First operand 46 states. Second operand has 39 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-15 08:13:33,651 INFO L74 IsIncluded]: Start isIncluded. First operand 46 states. Second operand has 39 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-15 08:13:33,652 INFO L87 Difference]: Start difference. First operand 46 states. Second operand has 39 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-15 08:13:33,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 08:13:33,660 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2022-04-15 08:13:33,660 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2022-04-15 08:13:33,662 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 08:13:33,662 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 08:13:33,662 INFO L74 IsIncluded]: Start isIncluded. First operand has 39 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 46 states. [2022-04-15 08:13:33,663 INFO L87 Difference]: Start difference. First operand has 39 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 46 states. [2022-04-15 08:13:33,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 08:13:33,668 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2022-04-15 08:13:33,668 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2022-04-15 08:13:33,669 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 08:13:33,669 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 08:13:33,670 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 08:13:33,670 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 08:13:33,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-15 08:13:33,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2022-04-15 08:13:33,671 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 26 [2022-04-15 08:13:33,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 08:13:33,672 INFO L478 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2022-04-15 08:13:33,672 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-15 08:13:33,672 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 39 states and 46 transitions. [2022-04-15 08:13:33,731 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 46 edges. 46 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 08:13:33,731 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2022-04-15 08:13:33,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-04-15 08:13:33,731 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 08:13:33,732 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 08:13:33,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-15 08:13:33,939 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 08:13:33,940 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 08:13:33,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 08:13:33,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1733722638, now seen corresponding path program 1 times [2022-04-15 08:13:33,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 08:13:33,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [304255103] [2022-04-15 08:13:33,941 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 08:13:33,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1733722638, now seen corresponding path program 2 times [2022-04-15 08:13:33,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 08:13:33,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378207860] [2022-04-15 08:13:33,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 08:13:33,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 08:13:33,984 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 08:13:33,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1470554665] [2022-04-15 08:13:33,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-15 08:13:33,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 08:13:33,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 08:13:33,986 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 08:13:33,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-15 08:13:34,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-15 08:13:34,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-15 08:13:34,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-15 08:13:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 08:13:34,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 08:13:34,246 INFO L272 TraceCheckUtils]: 0: Hoare triple {1221#true} call ULTIMATE.init(); {1221#true} is VALID [2022-04-15 08:13:34,247 INFO L290 TraceCheckUtils]: 1: Hoare triple {1221#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~counter~0 := 0; {1229#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:34,248 INFO L290 TraceCheckUtils]: 2: Hoare triple {1229#(<= ~counter~0 0)} assume true; {1229#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:34,250 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1229#(<= ~counter~0 0)} {1221#true} #89#return; {1229#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:34,251 INFO L272 TraceCheckUtils]: 4: Hoare triple {1229#(<= ~counter~0 0)} call #t~ret5 := main(); {1229#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:34,252 INFO L290 TraceCheckUtils]: 5: Hoare triple {1229#(<= ~counter~0 0)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {1229#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:34,255 INFO L272 TraceCheckUtils]: 6: Hoare triple {1229#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {1229#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:34,256 INFO L290 TraceCheckUtils]: 7: Hoare triple {1229#(<= ~counter~0 0)} ~cond := #in~cond; {1229#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:34,256 INFO L290 TraceCheckUtils]: 8: Hoare triple {1229#(<= ~counter~0 0)} assume !(0 == ~cond); {1229#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:34,256 INFO L290 TraceCheckUtils]: 9: Hoare triple {1229#(<= ~counter~0 0)} assume true; {1229#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:34,257 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {1229#(<= ~counter~0 0)} {1229#(<= ~counter~0 0)} #81#return; {1229#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:34,257 INFO L272 TraceCheckUtils]: 11: Hoare triple {1229#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {1229#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:34,258 INFO L290 TraceCheckUtils]: 12: Hoare triple {1229#(<= ~counter~0 0)} ~cond := #in~cond; {1229#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:34,258 INFO L290 TraceCheckUtils]: 13: Hoare triple {1229#(<= ~counter~0 0)} assume !(0 == ~cond); {1229#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:34,258 INFO L290 TraceCheckUtils]: 14: Hoare triple {1229#(<= ~counter~0 0)} assume true; {1229#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:34,263 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {1229#(<= ~counter~0 0)} {1229#(<= ~counter~0 0)} #83#return; {1229#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:34,264 INFO L290 TraceCheckUtils]: 16: Hoare triple {1229#(<= ~counter~0 0)} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {1229#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:34,264 INFO L290 TraceCheckUtils]: 17: Hoare triple {1229#(<= ~counter~0 0)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {1278#(<= ~counter~0 1)} is VALID [2022-04-15 08:13:34,265 INFO L290 TraceCheckUtils]: 18: Hoare triple {1278#(<= ~counter~0 1)} assume !!(#t~post3 < 5);havoc #t~post3; {1278#(<= ~counter~0 1)} is VALID [2022-04-15 08:13:34,265 INFO L290 TraceCheckUtils]: 19: Hoare triple {1278#(<= ~counter~0 1)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {1278#(<= ~counter~0 1)} is VALID [2022-04-15 08:13:34,266 INFO L290 TraceCheckUtils]: 20: Hoare triple {1278#(<= ~counter~0 1)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {1288#(<= ~counter~0 2)} is VALID [2022-04-15 08:13:34,266 INFO L290 TraceCheckUtils]: 21: Hoare triple {1288#(<= ~counter~0 2)} assume !!(#t~post4 < 5);havoc #t~post4; {1288#(<= ~counter~0 2)} is VALID [2022-04-15 08:13:34,267 INFO L272 TraceCheckUtils]: 22: Hoare triple {1288#(<= ~counter~0 2)} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1288#(<= ~counter~0 2)} is VALID [2022-04-15 08:13:34,267 INFO L290 TraceCheckUtils]: 23: Hoare triple {1288#(<= ~counter~0 2)} ~cond := #in~cond; {1288#(<= ~counter~0 2)} is VALID [2022-04-15 08:13:34,267 INFO L290 TraceCheckUtils]: 24: Hoare triple {1288#(<= ~counter~0 2)} assume !(0 == ~cond); {1288#(<= ~counter~0 2)} is VALID [2022-04-15 08:13:34,268 INFO L290 TraceCheckUtils]: 25: Hoare triple {1288#(<= ~counter~0 2)} assume true; {1288#(<= ~counter~0 2)} is VALID [2022-04-15 08:13:34,268 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {1288#(<= ~counter~0 2)} {1288#(<= ~counter~0 2)} #85#return; {1288#(<= ~counter~0 2)} is VALID [2022-04-15 08:13:34,268 INFO L290 TraceCheckUtils]: 27: Hoare triple {1288#(<= ~counter~0 2)} assume !!(~b~0 % 4294967296 != ~B~0 % 4294967296);~q~0 := 2 * ~q~0;~b~0 := (if ~b~0 % 4294967296 < 0 && 0 != ~b~0 % 4294967296 % 2 then 1 + ~b~0 % 4294967296 / 2 else ~b~0 % 4294967296 / 2); {1288#(<= ~counter~0 2)} is VALID [2022-04-15 08:13:34,269 INFO L290 TraceCheckUtils]: 28: Hoare triple {1288#(<= ~counter~0 2)} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {1288#(<= ~counter~0 2)} is VALID [2022-04-15 08:13:34,269 INFO L290 TraceCheckUtils]: 29: Hoare triple {1288#(<= ~counter~0 2)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {1316#(<= |main_#t~post4| 2)} is VALID [2022-04-15 08:13:34,270 INFO L290 TraceCheckUtils]: 30: Hoare triple {1316#(<= |main_#t~post4| 2)} assume !(#t~post4 < 5);havoc #t~post4; {1222#false} is VALID [2022-04-15 08:13:34,270 INFO L272 TraceCheckUtils]: 31: Hoare triple {1222#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1222#false} is VALID [2022-04-15 08:13:34,270 INFO L290 TraceCheckUtils]: 32: Hoare triple {1222#false} ~cond := #in~cond; {1222#false} is VALID [2022-04-15 08:13:34,270 INFO L290 TraceCheckUtils]: 33: Hoare triple {1222#false} assume 0 == ~cond; {1222#false} is VALID [2022-04-15 08:13:34,270 INFO L290 TraceCheckUtils]: 34: Hoare triple {1222#false} assume !false; {1222#false} is VALID [2022-04-15 08:13:34,270 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-15 08:13:34,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 08:13:34,506 INFO L290 TraceCheckUtils]: 34: Hoare triple {1222#false} assume !false; {1222#false} is VALID [2022-04-15 08:13:34,507 INFO L290 TraceCheckUtils]: 33: Hoare triple {1222#false} assume 0 == ~cond; {1222#false} is VALID [2022-04-15 08:13:34,507 INFO L290 TraceCheckUtils]: 32: Hoare triple {1222#false} ~cond := #in~cond; {1222#false} is VALID [2022-04-15 08:13:34,507 INFO L272 TraceCheckUtils]: 31: Hoare triple {1222#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1222#false} is VALID [2022-04-15 08:13:34,507 INFO L290 TraceCheckUtils]: 30: Hoare triple {1344#(< |main_#t~post4| 5)} assume !(#t~post4 < 5);havoc #t~post4; {1222#false} is VALID [2022-04-15 08:13:34,508 INFO L290 TraceCheckUtils]: 29: Hoare triple {1348#(< ~counter~0 5)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {1344#(< |main_#t~post4| 5)} is VALID [2022-04-15 08:13:34,508 INFO L290 TraceCheckUtils]: 28: Hoare triple {1348#(< ~counter~0 5)} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {1348#(< ~counter~0 5)} is VALID [2022-04-15 08:13:34,508 INFO L290 TraceCheckUtils]: 27: Hoare triple {1348#(< ~counter~0 5)} assume !!(~b~0 % 4294967296 != ~B~0 % 4294967296);~q~0 := 2 * ~q~0;~b~0 := (if ~b~0 % 4294967296 < 0 && 0 != ~b~0 % 4294967296 % 2 then 1 + ~b~0 % 4294967296 / 2 else ~b~0 % 4294967296 / 2); {1348#(< ~counter~0 5)} is VALID [2022-04-15 08:13:34,509 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {1221#true} {1348#(< ~counter~0 5)} #85#return; {1348#(< ~counter~0 5)} is VALID [2022-04-15 08:13:34,509 INFO L290 TraceCheckUtils]: 25: Hoare triple {1221#true} assume true; {1221#true} is VALID [2022-04-15 08:13:34,509 INFO L290 TraceCheckUtils]: 24: Hoare triple {1221#true} assume !(0 == ~cond); {1221#true} is VALID [2022-04-15 08:13:34,509 INFO L290 TraceCheckUtils]: 23: Hoare triple {1221#true} ~cond := #in~cond; {1221#true} is VALID [2022-04-15 08:13:34,509 INFO L272 TraceCheckUtils]: 22: Hoare triple {1348#(< ~counter~0 5)} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1221#true} is VALID [2022-04-15 08:13:34,510 INFO L290 TraceCheckUtils]: 21: Hoare triple {1348#(< ~counter~0 5)} assume !!(#t~post4 < 5);havoc #t~post4; {1348#(< ~counter~0 5)} is VALID [2022-04-15 08:13:34,510 INFO L290 TraceCheckUtils]: 20: Hoare triple {1376#(< ~counter~0 4)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {1348#(< ~counter~0 5)} is VALID [2022-04-15 08:13:34,511 INFO L290 TraceCheckUtils]: 19: Hoare triple {1376#(< ~counter~0 4)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {1376#(< ~counter~0 4)} is VALID [2022-04-15 08:13:34,511 INFO L290 TraceCheckUtils]: 18: Hoare triple {1376#(< ~counter~0 4)} assume !!(#t~post3 < 5);havoc #t~post3; {1376#(< ~counter~0 4)} is VALID [2022-04-15 08:13:34,512 INFO L290 TraceCheckUtils]: 17: Hoare triple {1288#(<= ~counter~0 2)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {1376#(< ~counter~0 4)} is VALID [2022-04-15 08:13:34,512 INFO L290 TraceCheckUtils]: 16: Hoare triple {1288#(<= ~counter~0 2)} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {1288#(<= ~counter~0 2)} is VALID [2022-04-15 08:13:34,513 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {1221#true} {1288#(<= ~counter~0 2)} #83#return; {1288#(<= ~counter~0 2)} is VALID [2022-04-15 08:13:34,513 INFO L290 TraceCheckUtils]: 14: Hoare triple {1221#true} assume true; {1221#true} is VALID [2022-04-15 08:13:34,513 INFO L290 TraceCheckUtils]: 13: Hoare triple {1221#true} assume !(0 == ~cond); {1221#true} is VALID [2022-04-15 08:13:34,513 INFO L290 TraceCheckUtils]: 12: Hoare triple {1221#true} ~cond := #in~cond; {1221#true} is VALID [2022-04-15 08:13:34,513 INFO L272 TraceCheckUtils]: 11: Hoare triple {1288#(<= ~counter~0 2)} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {1221#true} is VALID [2022-04-15 08:13:34,514 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {1221#true} {1288#(<= ~counter~0 2)} #81#return; {1288#(<= ~counter~0 2)} is VALID [2022-04-15 08:13:34,514 INFO L290 TraceCheckUtils]: 9: Hoare triple {1221#true} assume true; {1221#true} is VALID [2022-04-15 08:13:34,514 INFO L290 TraceCheckUtils]: 8: Hoare triple {1221#true} assume !(0 == ~cond); {1221#true} is VALID [2022-04-15 08:13:34,514 INFO L290 TraceCheckUtils]: 7: Hoare triple {1221#true} ~cond := #in~cond; {1221#true} is VALID [2022-04-15 08:13:34,514 INFO L272 TraceCheckUtils]: 6: Hoare triple {1288#(<= ~counter~0 2)} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {1221#true} is VALID [2022-04-15 08:13:34,515 INFO L290 TraceCheckUtils]: 5: Hoare triple {1288#(<= ~counter~0 2)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {1288#(<= ~counter~0 2)} is VALID [2022-04-15 08:13:34,515 INFO L272 TraceCheckUtils]: 4: Hoare triple {1288#(<= ~counter~0 2)} call #t~ret5 := main(); {1288#(<= ~counter~0 2)} is VALID [2022-04-15 08:13:34,516 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1288#(<= ~counter~0 2)} {1221#true} #89#return; {1288#(<= ~counter~0 2)} is VALID [2022-04-15 08:13:34,516 INFO L290 TraceCheckUtils]: 2: Hoare triple {1288#(<= ~counter~0 2)} assume true; {1288#(<= ~counter~0 2)} is VALID [2022-04-15 08:13:34,517 INFO L290 TraceCheckUtils]: 1: Hoare triple {1221#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~counter~0 := 0; {1288#(<= ~counter~0 2)} is VALID [2022-04-15 08:13:34,517 INFO L272 TraceCheckUtils]: 0: Hoare triple {1221#true} call ULTIMATE.init(); {1221#true} is VALID [2022-04-15 08:13:34,517 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-15 08:13:34,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 08:13:34,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378207860] [2022-04-15 08:13:34,518 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-15 08:13:34,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470554665] [2022-04-15 08:13:34,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470554665] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 08:13:34,518 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-15 08:13:34,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-04-15 08:13:34,518 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 08:13:34,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [304255103] [2022-04-15 08:13:34,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [304255103] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 08:13:34,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 08:13:34,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-15 08:13:34,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318592563] [2022-04-15 08:13:34,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 08:13:34,519 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 35 [2022-04-15 08:13:34,520 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 08:13:34,520 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-15 08:13:34,544 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 08:13:34,545 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-15 08:13:34,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 08:13:34,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-15 08:13:34,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-04-15 08:13:34,546 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-15 08:13:34,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 08:13:34,755 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2022-04-15 08:13:34,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-15 08:13:34,755 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 35 [2022-04-15 08:13:34,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 08:13:34,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-15 08:13:34,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 63 transitions. [2022-04-15 08:13:34,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-15 08:13:34,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 63 transitions. [2022-04-15 08:13:34,758 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 63 transitions. [2022-04-15 08:13:34,802 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 63 edges. 63 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 08:13:34,803 INFO L225 Difference]: With dead ends: 64 [2022-04-15 08:13:34,803 INFO L226 Difference]: Without dead ends: 57 [2022-04-15 08:13:34,804 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-04-15 08:13:34,804 INFO L913 BasicCegarLoop]: 32 mSDtfsCounter, 14 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 08:13:34,804 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 115 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 08:13:34,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-04-15 08:13:34,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2022-04-15 08:13:34,840 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 08:13:34,840 INFO L82 GeneralOperation]: Start isEquivalent. First operand 57 states. Second operand has 51 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 38 states have internal predecessors, (46), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-15 08:13:34,840 INFO L74 IsIncluded]: Start isIncluded. First operand 57 states. Second operand has 51 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 38 states have internal predecessors, (46), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-15 08:13:34,841 INFO L87 Difference]: Start difference. First operand 57 states. Second operand has 51 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 38 states have internal predecessors, (46), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-15 08:13:34,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 08:13:34,842 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2022-04-15 08:13:34,842 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2022-04-15 08:13:34,842 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 08:13:34,842 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 08:13:34,843 INFO L74 IsIncluded]: Start isIncluded. First operand has 51 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 38 states have internal predecessors, (46), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand 57 states. [2022-04-15 08:13:34,843 INFO L87 Difference]: Start difference. First operand has 51 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 38 states have internal predecessors, (46), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand 57 states. [2022-04-15 08:13:34,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 08:13:34,844 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2022-04-15 08:13:34,844 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2022-04-15 08:13:34,845 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 08:13:34,845 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 08:13:34,845 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 08:13:34,845 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 08:13:34,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 38 states have internal predecessors, (46), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-15 08:13:34,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2022-04-15 08:13:34,846 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 35 [2022-04-15 08:13:34,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 08:13:34,847 INFO L478 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2022-04-15 08:13:34,847 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-15 08:13:34,847 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 51 states and 60 transitions. [2022-04-15 08:13:34,901 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 60 edges. 60 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 08:13:34,901 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2022-04-15 08:13:34,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-04-15 08:13:34,902 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 08:13:34,902 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 08:13:34,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-15 08:13:35,115 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 08:13:35,116 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 08:13:35,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 08:13:35,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1731935178, now seen corresponding path program 1 times [2022-04-15 08:13:35,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 08:13:35,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [256969655] [2022-04-15 08:13:35,116 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 08:13:35,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1731935178, now seen corresponding path program 2 times [2022-04-15 08:13:35,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 08:13:35,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423929868] [2022-04-15 08:13:35,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 08:13:35,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 08:13:35,134 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 08:13:35,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [31408505] [2022-04-15 08:13:35,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-15 08:13:35,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 08:13:35,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 08:13:35,147 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 08:13:35,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-15 08:13:35,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-15 08:13:35,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-15 08:13:35,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-15 08:13:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 08:13:35,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 08:13:35,267 INFO L272 TraceCheckUtils]: 0: Hoare triple {1785#true} call ULTIMATE.init(); {1785#true} is VALID [2022-04-15 08:13:35,267 INFO L290 TraceCheckUtils]: 1: Hoare triple {1785#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~counter~0 := 0; {1785#true} is VALID [2022-04-15 08:13:35,268 INFO L290 TraceCheckUtils]: 2: Hoare triple {1785#true} assume true; {1785#true} is VALID [2022-04-15 08:13:35,268 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1785#true} {1785#true} #89#return; {1785#true} is VALID [2022-04-15 08:13:35,268 INFO L272 TraceCheckUtils]: 4: Hoare triple {1785#true} call #t~ret5 := main(); {1785#true} is VALID [2022-04-15 08:13:35,268 INFO L290 TraceCheckUtils]: 5: Hoare triple {1785#true} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {1785#true} is VALID [2022-04-15 08:13:35,268 INFO L272 TraceCheckUtils]: 6: Hoare triple {1785#true} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {1785#true} is VALID [2022-04-15 08:13:35,268 INFO L290 TraceCheckUtils]: 7: Hoare triple {1785#true} ~cond := #in~cond; {1785#true} is VALID [2022-04-15 08:13:35,268 INFO L290 TraceCheckUtils]: 8: Hoare triple {1785#true} assume !(0 == ~cond); {1785#true} is VALID [2022-04-15 08:13:35,268 INFO L290 TraceCheckUtils]: 9: Hoare triple {1785#true} assume true; {1785#true} is VALID [2022-04-15 08:13:35,268 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {1785#true} {1785#true} #81#return; {1785#true} is VALID [2022-04-15 08:13:35,268 INFO L272 TraceCheckUtils]: 11: Hoare triple {1785#true} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {1785#true} is VALID [2022-04-15 08:13:35,269 INFO L290 TraceCheckUtils]: 12: Hoare triple {1785#true} ~cond := #in~cond; {1785#true} is VALID [2022-04-15 08:13:35,269 INFO L290 TraceCheckUtils]: 13: Hoare triple {1785#true} assume !(0 == ~cond); {1785#true} is VALID [2022-04-15 08:13:35,269 INFO L290 TraceCheckUtils]: 14: Hoare triple {1785#true} assume true; {1785#true} is VALID [2022-04-15 08:13:35,269 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {1785#true} {1785#true} #83#return; {1785#true} is VALID [2022-04-15 08:13:35,270 INFO L290 TraceCheckUtils]: 16: Hoare triple {1785#true} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {1838#(= main_~B~0 main_~b~0)} is VALID [2022-04-15 08:13:35,270 INFO L290 TraceCheckUtils]: 17: Hoare triple {1838#(= main_~B~0 main_~b~0)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {1838#(= main_~B~0 main_~b~0)} is VALID [2022-04-15 08:13:35,274 INFO L290 TraceCheckUtils]: 18: Hoare triple {1838#(= main_~B~0 main_~b~0)} assume !!(#t~post3 < 5);havoc #t~post3; {1838#(= main_~B~0 main_~b~0)} is VALID [2022-04-15 08:13:35,274 INFO L290 TraceCheckUtils]: 19: Hoare triple {1838#(= main_~B~0 main_~b~0)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {1838#(= main_~B~0 main_~b~0)} is VALID [2022-04-15 08:13:35,275 INFO L290 TraceCheckUtils]: 20: Hoare triple {1838#(= main_~B~0 main_~b~0)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {1838#(= main_~B~0 main_~b~0)} is VALID [2022-04-15 08:13:35,275 INFO L290 TraceCheckUtils]: 21: Hoare triple {1838#(= main_~B~0 main_~b~0)} assume !!(#t~post4 < 5);havoc #t~post4; {1838#(= main_~B~0 main_~b~0)} is VALID [2022-04-15 08:13:35,275 INFO L272 TraceCheckUtils]: 22: Hoare triple {1838#(= main_~B~0 main_~b~0)} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1785#true} is VALID [2022-04-15 08:13:35,275 INFO L290 TraceCheckUtils]: 23: Hoare triple {1785#true} ~cond := #in~cond; {1785#true} is VALID [2022-04-15 08:13:35,275 INFO L290 TraceCheckUtils]: 24: Hoare triple {1785#true} assume !(0 == ~cond); {1785#true} is VALID [2022-04-15 08:13:35,275 INFO L290 TraceCheckUtils]: 25: Hoare triple {1785#true} assume true; {1785#true} is VALID [2022-04-15 08:13:35,276 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {1785#true} {1838#(= main_~B~0 main_~b~0)} #85#return; {1838#(= main_~B~0 main_~b~0)} is VALID [2022-04-15 08:13:35,276 INFO L290 TraceCheckUtils]: 27: Hoare triple {1838#(= main_~B~0 main_~b~0)} assume !!(~b~0 % 4294967296 != ~B~0 % 4294967296);~q~0 := 2 * ~q~0;~b~0 := (if ~b~0 % 4294967296 < 0 && 0 != ~b~0 % 4294967296 % 2 then 1 + ~b~0 % 4294967296 / 2 else ~b~0 % 4294967296 / 2); {1786#false} is VALID [2022-04-15 08:13:35,276 INFO L290 TraceCheckUtils]: 28: Hoare triple {1786#false} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {1786#false} is VALID [2022-04-15 08:13:35,276 INFO L290 TraceCheckUtils]: 29: Hoare triple {1786#false} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {1786#false} is VALID [2022-04-15 08:13:35,276 INFO L290 TraceCheckUtils]: 30: Hoare triple {1786#false} assume !!(#t~post4 < 5);havoc #t~post4; {1786#false} is VALID [2022-04-15 08:13:35,277 INFO L272 TraceCheckUtils]: 31: Hoare triple {1786#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1786#false} is VALID [2022-04-15 08:13:35,277 INFO L290 TraceCheckUtils]: 32: Hoare triple {1786#false} ~cond := #in~cond; {1786#false} is VALID [2022-04-15 08:13:35,277 INFO L290 TraceCheckUtils]: 33: Hoare triple {1786#false} assume 0 == ~cond; {1786#false} is VALID [2022-04-15 08:13:35,277 INFO L290 TraceCheckUtils]: 34: Hoare triple {1786#false} assume !false; {1786#false} is VALID [2022-04-15 08:13:35,277 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-15 08:13:35,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-15 08:13:35,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 08:13:35,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423929868] [2022-04-15 08:13:35,277 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-15 08:13:35,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31408505] [2022-04-15 08:13:35,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31408505] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 08:13:35,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 08:13:35,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-15 08:13:35,278 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 08:13:35,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [256969655] [2022-04-15 08:13:35,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [256969655] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 08:13:35,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 08:13:35,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-15 08:13:35,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86893550] [2022-04-15 08:13:35,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 08:13:35,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2022-04-15 08:13:35,279 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 08:13:35,279 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-15 08:13:35,297 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 08:13:35,298 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-15 08:13:35,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 08:13:35,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-15 08:13:35,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-15 08:13:35,298 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-15 08:13:35,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 08:13:35,386 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2022-04-15 08:13:35,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-15 08:13:35,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2022-04-15 08:13:35,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 08:13:35,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-15 08:13:35,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2022-04-15 08:13:35,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-15 08:13:35,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2022-04-15 08:13:35,388 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 58 transitions. [2022-04-15 08:13:35,427 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 58 edges. 58 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 08:13:35,427 INFO L225 Difference]: With dead ends: 72 [2022-04-15 08:13:35,427 INFO L226 Difference]: Without dead ends: 40 [2022-04-15 08:13:35,428 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-15 08:13:35,428 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 08:13:35,429 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 08:13:35,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-04-15 08:13:35,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-04-15 08:13:35,463 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 08:13:35,464 INFO L82 GeneralOperation]: Start isEquivalent. First operand 40 states. Second operand has 40 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-15 08:13:35,464 INFO L74 IsIncluded]: Start isIncluded. First operand 40 states. Second operand has 40 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-15 08:13:35,464 INFO L87 Difference]: Start difference. First operand 40 states. Second operand has 40 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-15 08:13:35,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 08:13:35,466 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2022-04-15 08:13:35,466 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2022-04-15 08:13:35,466 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 08:13:35,466 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 08:13:35,466 INFO L74 IsIncluded]: Start isIncluded. First operand has 40 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 40 states. [2022-04-15 08:13:35,466 INFO L87 Difference]: Start difference. First operand has 40 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 40 states. [2022-04-15 08:13:35,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 08:13:35,468 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2022-04-15 08:13:35,468 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2022-04-15 08:13:35,468 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 08:13:35,468 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 08:13:35,468 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 08:13:35,468 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 08:13:35,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-15 08:13:35,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2022-04-15 08:13:35,469 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 35 [2022-04-15 08:13:35,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 08:13:35,469 INFO L478 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2022-04-15 08:13:35,470 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-15 08:13:35,470 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 40 states and 47 transitions. [2022-04-15 08:13:35,515 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 47 edges. 47 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 08:13:35,515 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2022-04-15 08:13:35,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-04-15 08:13:35,516 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 08:13:35,516 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 08:13:35,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-15 08:13:35,717 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 08:13:35,717 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 08:13:35,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 08:13:35,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1874551443, now seen corresponding path program 1 times [2022-04-15 08:13:35,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 08:13:35,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1834848918] [2022-04-15 08:13:35,718 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 08:13:35,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1874551443, now seen corresponding path program 2 times [2022-04-15 08:13:35,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 08:13:35,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753818997] [2022-04-15 08:13:35,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 08:13:35,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 08:13:35,734 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 08:13:35,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2145981640] [2022-04-15 08:13:35,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-15 08:13:35,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 08:13:35,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 08:13:35,741 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 08:13:35,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-15 08:13:35,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-15 08:13:35,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-15 08:13:35,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-15 08:13:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 08:13:35,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 08:13:35,953 INFO L272 TraceCheckUtils]: 0: Hoare triple {2196#true} call ULTIMATE.init(); {2196#true} is VALID [2022-04-15 08:13:35,954 INFO L290 TraceCheckUtils]: 1: Hoare triple {2196#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~counter~0 := 0; {2204#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:35,954 INFO L290 TraceCheckUtils]: 2: Hoare triple {2204#(<= ~counter~0 0)} assume true; {2204#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:35,955 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2204#(<= ~counter~0 0)} {2196#true} #89#return; {2204#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:35,955 INFO L272 TraceCheckUtils]: 4: Hoare triple {2204#(<= ~counter~0 0)} call #t~ret5 := main(); {2204#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:35,955 INFO L290 TraceCheckUtils]: 5: Hoare triple {2204#(<= ~counter~0 0)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {2204#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:35,956 INFO L272 TraceCheckUtils]: 6: Hoare triple {2204#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {2204#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:35,956 INFO L290 TraceCheckUtils]: 7: Hoare triple {2204#(<= ~counter~0 0)} ~cond := #in~cond; {2204#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:35,956 INFO L290 TraceCheckUtils]: 8: Hoare triple {2204#(<= ~counter~0 0)} assume !(0 == ~cond); {2204#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:35,956 INFO L290 TraceCheckUtils]: 9: Hoare triple {2204#(<= ~counter~0 0)} assume true; {2204#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:35,957 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {2204#(<= ~counter~0 0)} {2204#(<= ~counter~0 0)} #81#return; {2204#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:35,957 INFO L272 TraceCheckUtils]: 11: Hoare triple {2204#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {2204#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:35,959 INFO L290 TraceCheckUtils]: 12: Hoare triple {2204#(<= ~counter~0 0)} ~cond := #in~cond; {2204#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:35,960 INFO L290 TraceCheckUtils]: 13: Hoare triple {2204#(<= ~counter~0 0)} assume !(0 == ~cond); {2204#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:35,960 INFO L290 TraceCheckUtils]: 14: Hoare triple {2204#(<= ~counter~0 0)} assume true; {2204#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:35,960 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {2204#(<= ~counter~0 0)} {2204#(<= ~counter~0 0)} #83#return; {2204#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:35,961 INFO L290 TraceCheckUtils]: 16: Hoare triple {2204#(<= ~counter~0 0)} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {2204#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:35,961 INFO L290 TraceCheckUtils]: 17: Hoare triple {2204#(<= ~counter~0 0)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2253#(<= ~counter~0 1)} is VALID [2022-04-15 08:13:35,962 INFO L290 TraceCheckUtils]: 18: Hoare triple {2253#(<= ~counter~0 1)} assume !!(#t~post3 < 5);havoc #t~post3; {2253#(<= ~counter~0 1)} is VALID [2022-04-15 08:13:35,962 INFO L290 TraceCheckUtils]: 19: Hoare triple {2253#(<= ~counter~0 1)} assume !!(~r~0 % 4294967296 >= ~b~0 % 4294967296);~b~0 := 2 * ~b~0; {2253#(<= ~counter~0 1)} is VALID [2022-04-15 08:13:35,962 INFO L290 TraceCheckUtils]: 20: Hoare triple {2253#(<= ~counter~0 1)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2263#(<= |main_#t~post3| 1)} is VALID [2022-04-15 08:13:35,963 INFO L290 TraceCheckUtils]: 21: Hoare triple {2263#(<= |main_#t~post3| 1)} assume !(#t~post3 < 5);havoc #t~post3; {2197#false} is VALID [2022-04-15 08:13:35,963 INFO L290 TraceCheckUtils]: 22: Hoare triple {2197#false} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2197#false} is VALID [2022-04-15 08:13:35,967 INFO L290 TraceCheckUtils]: 23: Hoare triple {2197#false} assume !!(#t~post4 < 5);havoc #t~post4; {2197#false} is VALID [2022-04-15 08:13:35,967 INFO L272 TraceCheckUtils]: 24: Hoare triple {2197#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2197#false} is VALID [2022-04-15 08:13:35,968 INFO L290 TraceCheckUtils]: 25: Hoare triple {2197#false} ~cond := #in~cond; {2197#false} is VALID [2022-04-15 08:13:35,969 INFO L290 TraceCheckUtils]: 26: Hoare triple {2197#false} assume !(0 == ~cond); {2197#false} is VALID [2022-04-15 08:13:35,971 INFO L290 TraceCheckUtils]: 27: Hoare triple {2197#false} assume true; {2197#false} is VALID [2022-04-15 08:13:35,973 INFO L284 TraceCheckUtils]: 28: Hoare quadruple {2197#false} {2197#false} #85#return; {2197#false} is VALID [2022-04-15 08:13:35,973 INFO L290 TraceCheckUtils]: 29: Hoare triple {2197#false} assume !!(~b~0 % 4294967296 != ~B~0 % 4294967296);~q~0 := 2 * ~q~0;~b~0 := (if ~b~0 % 4294967296 < 0 && 0 != ~b~0 % 4294967296 % 2 then 1 + ~b~0 % 4294967296 / 2 else ~b~0 % 4294967296 / 2); {2197#false} is VALID [2022-04-15 08:13:35,973 INFO L290 TraceCheckUtils]: 30: Hoare triple {2197#false} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {2197#false} is VALID [2022-04-15 08:13:35,973 INFO L290 TraceCheckUtils]: 31: Hoare triple {2197#false} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2197#false} is VALID [2022-04-15 08:13:35,973 INFO L290 TraceCheckUtils]: 32: Hoare triple {2197#false} assume !(#t~post4 < 5);havoc #t~post4; {2197#false} is VALID [2022-04-15 08:13:35,974 INFO L272 TraceCheckUtils]: 33: Hoare triple {2197#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2197#false} is VALID [2022-04-15 08:13:35,974 INFO L290 TraceCheckUtils]: 34: Hoare triple {2197#false} ~cond := #in~cond; {2197#false} is VALID [2022-04-15 08:13:35,974 INFO L290 TraceCheckUtils]: 35: Hoare triple {2197#false} assume 0 == ~cond; {2197#false} is VALID [2022-04-15 08:13:35,974 INFO L290 TraceCheckUtils]: 36: Hoare triple {2197#false} assume !false; {2197#false} is VALID [2022-04-15 08:13:35,974 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-04-15 08:13:35,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 08:13:36,153 INFO L290 TraceCheckUtils]: 36: Hoare triple {2197#false} assume !false; {2197#false} is VALID [2022-04-15 08:13:36,153 INFO L290 TraceCheckUtils]: 35: Hoare triple {2197#false} assume 0 == ~cond; {2197#false} is VALID [2022-04-15 08:13:36,153 INFO L290 TraceCheckUtils]: 34: Hoare triple {2197#false} ~cond := #in~cond; {2197#false} is VALID [2022-04-15 08:13:36,153 INFO L272 TraceCheckUtils]: 33: Hoare triple {2197#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2197#false} is VALID [2022-04-15 08:13:36,153 INFO L290 TraceCheckUtils]: 32: Hoare triple {2197#false} assume !(#t~post4 < 5);havoc #t~post4; {2197#false} is VALID [2022-04-15 08:13:36,154 INFO L290 TraceCheckUtils]: 31: Hoare triple {2197#false} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2197#false} is VALID [2022-04-15 08:13:36,154 INFO L290 TraceCheckUtils]: 30: Hoare triple {2197#false} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {2197#false} is VALID [2022-04-15 08:13:36,154 INFO L290 TraceCheckUtils]: 29: Hoare triple {2197#false} assume !!(~b~0 % 4294967296 != ~B~0 % 4294967296);~q~0 := 2 * ~q~0;~b~0 := (if ~b~0 % 4294967296 < 0 && 0 != ~b~0 % 4294967296 % 2 then 1 + ~b~0 % 4294967296 / 2 else ~b~0 % 4294967296 / 2); {2197#false} is VALID [2022-04-15 08:13:36,154 INFO L284 TraceCheckUtils]: 28: Hoare quadruple {2196#true} {2197#false} #85#return; {2197#false} is VALID [2022-04-15 08:13:36,154 INFO L290 TraceCheckUtils]: 27: Hoare triple {2196#true} assume true; {2196#true} is VALID [2022-04-15 08:13:36,154 INFO L290 TraceCheckUtils]: 26: Hoare triple {2196#true} assume !(0 == ~cond); {2196#true} is VALID [2022-04-15 08:13:36,154 INFO L290 TraceCheckUtils]: 25: Hoare triple {2196#true} ~cond := #in~cond; {2196#true} is VALID [2022-04-15 08:13:36,154 INFO L272 TraceCheckUtils]: 24: Hoare triple {2197#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2196#true} is VALID [2022-04-15 08:13:36,154 INFO L290 TraceCheckUtils]: 23: Hoare triple {2197#false} assume !!(#t~post4 < 5);havoc #t~post4; {2197#false} is VALID [2022-04-15 08:13:36,154 INFO L290 TraceCheckUtils]: 22: Hoare triple {2197#false} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2197#false} is VALID [2022-04-15 08:13:36,159 INFO L290 TraceCheckUtils]: 21: Hoare triple {2357#(< |main_#t~post3| 5)} assume !(#t~post3 < 5);havoc #t~post3; {2197#false} is VALID [2022-04-15 08:13:36,160 INFO L290 TraceCheckUtils]: 20: Hoare triple {2361#(< ~counter~0 5)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2357#(< |main_#t~post3| 5)} is VALID [2022-04-15 08:13:36,160 INFO L290 TraceCheckUtils]: 19: Hoare triple {2361#(< ~counter~0 5)} assume !!(~r~0 % 4294967296 >= ~b~0 % 4294967296);~b~0 := 2 * ~b~0; {2361#(< ~counter~0 5)} is VALID [2022-04-15 08:13:36,160 INFO L290 TraceCheckUtils]: 18: Hoare triple {2361#(< ~counter~0 5)} assume !!(#t~post3 < 5);havoc #t~post3; {2361#(< ~counter~0 5)} is VALID [2022-04-15 08:13:36,161 INFO L290 TraceCheckUtils]: 17: Hoare triple {2371#(< ~counter~0 4)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2361#(< ~counter~0 5)} is VALID [2022-04-15 08:13:36,161 INFO L290 TraceCheckUtils]: 16: Hoare triple {2371#(< ~counter~0 4)} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {2371#(< ~counter~0 4)} is VALID [2022-04-15 08:13:36,162 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {2196#true} {2371#(< ~counter~0 4)} #83#return; {2371#(< ~counter~0 4)} is VALID [2022-04-15 08:13:36,162 INFO L290 TraceCheckUtils]: 14: Hoare triple {2196#true} assume true; {2196#true} is VALID [2022-04-15 08:13:36,162 INFO L290 TraceCheckUtils]: 13: Hoare triple {2196#true} assume !(0 == ~cond); {2196#true} is VALID [2022-04-15 08:13:36,162 INFO L290 TraceCheckUtils]: 12: Hoare triple {2196#true} ~cond := #in~cond; {2196#true} is VALID [2022-04-15 08:13:36,162 INFO L272 TraceCheckUtils]: 11: Hoare triple {2371#(< ~counter~0 4)} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {2196#true} is VALID [2022-04-15 08:13:36,163 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {2196#true} {2371#(< ~counter~0 4)} #81#return; {2371#(< ~counter~0 4)} is VALID [2022-04-15 08:13:36,163 INFO L290 TraceCheckUtils]: 9: Hoare triple {2196#true} assume true; {2196#true} is VALID [2022-04-15 08:13:36,163 INFO L290 TraceCheckUtils]: 8: Hoare triple {2196#true} assume !(0 == ~cond); {2196#true} is VALID [2022-04-15 08:13:36,163 INFO L290 TraceCheckUtils]: 7: Hoare triple {2196#true} ~cond := #in~cond; {2196#true} is VALID [2022-04-15 08:13:36,163 INFO L272 TraceCheckUtils]: 6: Hoare triple {2371#(< ~counter~0 4)} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {2196#true} is VALID [2022-04-15 08:13:36,164 INFO L290 TraceCheckUtils]: 5: Hoare triple {2371#(< ~counter~0 4)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {2371#(< ~counter~0 4)} is VALID [2022-04-15 08:13:36,164 INFO L272 TraceCheckUtils]: 4: Hoare triple {2371#(< ~counter~0 4)} call #t~ret5 := main(); {2371#(< ~counter~0 4)} is VALID [2022-04-15 08:13:36,164 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2371#(< ~counter~0 4)} {2196#true} #89#return; {2371#(< ~counter~0 4)} is VALID [2022-04-15 08:13:36,165 INFO L290 TraceCheckUtils]: 2: Hoare triple {2371#(< ~counter~0 4)} assume true; {2371#(< ~counter~0 4)} is VALID [2022-04-15 08:13:36,165 INFO L290 TraceCheckUtils]: 1: Hoare triple {2196#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~counter~0 := 0; {2371#(< ~counter~0 4)} is VALID [2022-04-15 08:13:36,166 INFO L272 TraceCheckUtils]: 0: Hoare triple {2196#true} call ULTIMATE.init(); {2196#true} is VALID [2022-04-15 08:13:36,166 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-04-15 08:13:36,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 08:13:36,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753818997] [2022-04-15 08:13:36,166 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-15 08:13:36,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145981640] [2022-04-15 08:13:36,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145981640] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 08:13:36,166 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-15 08:13:36,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-04-15 08:13:36,167 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 08:13:36,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1834848918] [2022-04-15 08:13:36,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1834848918] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 08:13:36,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 08:13:36,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-15 08:13:36,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496579930] [2022-04-15 08:13:36,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 08:13:36,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 37 [2022-04-15 08:13:36,167 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 08:13:36,168 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-15 08:13:36,190 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 08:13:36,190 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-15 08:13:36,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 08:13:36,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-15 08:13:36,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-04-15 08:13:36,191 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-15 08:13:36,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 08:13:36,306 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2022-04-15 08:13:36,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-15 08:13:36,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 37 [2022-04-15 08:13:36,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 08:13:36,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-15 08:13:36,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 55 transitions. [2022-04-15 08:13:36,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-15 08:13:36,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 55 transitions. [2022-04-15 08:13:36,308 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 55 transitions. [2022-04-15 08:13:36,350 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 55 edges. 55 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 08:13:36,351 INFO L225 Difference]: With dead ends: 63 [2022-04-15 08:13:36,351 INFO L226 Difference]: Without dead ends: 42 [2022-04-15 08:13:36,351 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-04-15 08:13:36,351 INFO L913 BasicCegarLoop]: 32 mSDtfsCounter, 6 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 08:13:36,352 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 99 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 08:13:36,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-04-15 08:13:36,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-04-15 08:13:36,374 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 08:13:36,375 INFO L82 GeneralOperation]: Start isEquivalent. First operand 42 states. Second operand has 42 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-15 08:13:36,375 INFO L74 IsIncluded]: Start isIncluded. First operand 42 states. Second operand has 42 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-15 08:13:36,375 INFO L87 Difference]: Start difference. First operand 42 states. Second operand has 42 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-15 08:13:36,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 08:13:36,376 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2022-04-15 08:13:36,376 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2022-04-15 08:13:36,376 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 08:13:36,376 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 08:13:36,376 INFO L74 IsIncluded]: Start isIncluded. First operand has 42 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 42 states. [2022-04-15 08:13:36,377 INFO L87 Difference]: Start difference. First operand has 42 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 42 states. [2022-04-15 08:13:36,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 08:13:36,378 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2022-04-15 08:13:36,378 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2022-04-15 08:13:36,378 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 08:13:36,378 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 08:13:36,378 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 08:13:36,378 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 08:13:36,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-15 08:13:36,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2022-04-15 08:13:36,379 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 37 [2022-04-15 08:13:36,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 08:13:36,379 INFO L478 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2022-04-15 08:13:36,379 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-15 08:13:36,379 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 42 states and 49 transitions. [2022-04-15 08:13:36,421 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 49 edges. 49 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 08:13:36,422 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2022-04-15 08:13:36,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-15 08:13:36,422 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 08:13:36,422 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 08:13:36,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-15 08:13:36,635 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 08:13:36,635 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 08:13:36,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 08:13:36,636 INFO L85 PathProgramCache]: Analyzing trace with hash 815990494, now seen corresponding path program 1 times [2022-04-15 08:13:36,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 08:13:36,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [829636476] [2022-04-15 08:13:36,636 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 08:13:36,636 INFO L85 PathProgramCache]: Analyzing trace with hash 815990494, now seen corresponding path program 2 times [2022-04-15 08:13:36,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 08:13:36,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708092318] [2022-04-15 08:13:36,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 08:13:36,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 08:13:36,651 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 08:13:36,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [653885763] [2022-04-15 08:13:36,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-15 08:13:36,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 08:13:36,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 08:13:36,652 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 08:13:36,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-15 08:13:36,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-15 08:13:36,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-15 08:13:36,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-15 08:13:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 08:13:36,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 08:13:36,909 INFO L272 TraceCheckUtils]: 0: Hoare triple {2721#true} call ULTIMATE.init(); {2721#true} is VALID [2022-04-15 08:13:36,909 INFO L290 TraceCheckUtils]: 1: Hoare triple {2721#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~counter~0 := 0; {2729#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:36,910 INFO L290 TraceCheckUtils]: 2: Hoare triple {2729#(<= ~counter~0 0)} assume true; {2729#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:36,910 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2729#(<= ~counter~0 0)} {2721#true} #89#return; {2729#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:36,910 INFO L272 TraceCheckUtils]: 4: Hoare triple {2729#(<= ~counter~0 0)} call #t~ret5 := main(); {2729#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:36,911 INFO L290 TraceCheckUtils]: 5: Hoare triple {2729#(<= ~counter~0 0)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {2729#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:36,911 INFO L272 TraceCheckUtils]: 6: Hoare triple {2729#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {2729#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:36,911 INFO L290 TraceCheckUtils]: 7: Hoare triple {2729#(<= ~counter~0 0)} ~cond := #in~cond; {2729#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:36,912 INFO L290 TraceCheckUtils]: 8: Hoare triple {2729#(<= ~counter~0 0)} assume !(0 == ~cond); {2729#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:36,912 INFO L290 TraceCheckUtils]: 9: Hoare triple {2729#(<= ~counter~0 0)} assume true; {2729#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:36,912 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {2729#(<= ~counter~0 0)} {2729#(<= ~counter~0 0)} #81#return; {2729#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:36,913 INFO L272 TraceCheckUtils]: 11: Hoare triple {2729#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {2729#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:36,913 INFO L290 TraceCheckUtils]: 12: Hoare triple {2729#(<= ~counter~0 0)} ~cond := #in~cond; {2729#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:36,913 INFO L290 TraceCheckUtils]: 13: Hoare triple {2729#(<= ~counter~0 0)} assume !(0 == ~cond); {2729#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:36,914 INFO L290 TraceCheckUtils]: 14: Hoare triple {2729#(<= ~counter~0 0)} assume true; {2729#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:36,914 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {2729#(<= ~counter~0 0)} {2729#(<= ~counter~0 0)} #83#return; {2729#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:36,914 INFO L290 TraceCheckUtils]: 16: Hoare triple {2729#(<= ~counter~0 0)} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {2729#(<= ~counter~0 0)} is VALID [2022-04-15 08:13:36,915 INFO L290 TraceCheckUtils]: 17: Hoare triple {2729#(<= ~counter~0 0)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2778#(<= ~counter~0 1)} is VALID [2022-04-15 08:13:36,915 INFO L290 TraceCheckUtils]: 18: Hoare triple {2778#(<= ~counter~0 1)} assume !!(#t~post3 < 5);havoc #t~post3; {2778#(<= ~counter~0 1)} is VALID [2022-04-15 08:13:36,916 INFO L290 TraceCheckUtils]: 19: Hoare triple {2778#(<= ~counter~0 1)} assume !!(~r~0 % 4294967296 >= ~b~0 % 4294967296);~b~0 := 2 * ~b~0; {2778#(<= ~counter~0 1)} is VALID [2022-04-15 08:13:36,916 INFO L290 TraceCheckUtils]: 20: Hoare triple {2778#(<= ~counter~0 1)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2788#(<= ~counter~0 2)} is VALID [2022-04-15 08:13:36,916 INFO L290 TraceCheckUtils]: 21: Hoare triple {2788#(<= ~counter~0 2)} assume !!(#t~post3 < 5);havoc #t~post3; {2788#(<= ~counter~0 2)} is VALID [2022-04-15 08:13:36,917 INFO L290 TraceCheckUtils]: 22: Hoare triple {2788#(<= ~counter~0 2)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {2788#(<= ~counter~0 2)} is VALID [2022-04-15 08:13:36,917 INFO L290 TraceCheckUtils]: 23: Hoare triple {2788#(<= ~counter~0 2)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2798#(<= ~counter~0 3)} is VALID [2022-04-15 08:13:36,917 INFO L290 TraceCheckUtils]: 24: Hoare triple {2798#(<= ~counter~0 3)} assume !!(#t~post4 < 5);havoc #t~post4; {2798#(<= ~counter~0 3)} is VALID [2022-04-15 08:13:36,918 INFO L272 TraceCheckUtils]: 25: Hoare triple {2798#(<= ~counter~0 3)} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2798#(<= ~counter~0 3)} is VALID [2022-04-15 08:13:36,918 INFO L290 TraceCheckUtils]: 26: Hoare triple {2798#(<= ~counter~0 3)} ~cond := #in~cond; {2798#(<= ~counter~0 3)} is VALID [2022-04-15 08:13:36,918 INFO L290 TraceCheckUtils]: 27: Hoare triple {2798#(<= ~counter~0 3)} assume !(0 == ~cond); {2798#(<= ~counter~0 3)} is VALID [2022-04-15 08:13:36,919 INFO L290 TraceCheckUtils]: 28: Hoare triple {2798#(<= ~counter~0 3)} assume true; {2798#(<= ~counter~0 3)} is VALID [2022-04-15 08:13:36,919 INFO L284 TraceCheckUtils]: 29: Hoare quadruple {2798#(<= ~counter~0 3)} {2798#(<= ~counter~0 3)} #85#return; {2798#(<= ~counter~0 3)} is VALID [2022-04-15 08:13:36,920 INFO L290 TraceCheckUtils]: 30: Hoare triple {2798#(<= ~counter~0 3)} assume !!(~b~0 % 4294967296 != ~B~0 % 4294967296);~q~0 := 2 * ~q~0;~b~0 := (if ~b~0 % 4294967296 < 0 && 0 != ~b~0 % 4294967296 % 2 then 1 + ~b~0 % 4294967296 / 2 else ~b~0 % 4294967296 / 2); {2798#(<= ~counter~0 3)} is VALID [2022-04-15 08:13:36,920 INFO L290 TraceCheckUtils]: 31: Hoare triple {2798#(<= ~counter~0 3)} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {2798#(<= ~counter~0 3)} is VALID [2022-04-15 08:13:36,920 INFO L290 TraceCheckUtils]: 32: Hoare triple {2798#(<= ~counter~0 3)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2826#(<= |main_#t~post4| 3)} is VALID [2022-04-15 08:13:36,921 INFO L290 TraceCheckUtils]: 33: Hoare triple {2826#(<= |main_#t~post4| 3)} assume !(#t~post4 < 5);havoc #t~post4; {2722#false} is VALID [2022-04-15 08:13:36,921 INFO L272 TraceCheckUtils]: 34: Hoare triple {2722#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2722#false} is VALID [2022-04-15 08:13:36,921 INFO L290 TraceCheckUtils]: 35: Hoare triple {2722#false} ~cond := #in~cond; {2722#false} is VALID [2022-04-15 08:13:36,921 INFO L290 TraceCheckUtils]: 36: Hoare triple {2722#false} assume 0 == ~cond; {2722#false} is VALID [2022-04-15 08:13:36,921 INFO L290 TraceCheckUtils]: 37: Hoare triple {2722#false} assume !false; {2722#false} is VALID [2022-04-15 08:13:36,921 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-15 08:13:36,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 08:13:37,140 INFO L290 TraceCheckUtils]: 37: Hoare triple {2722#false} assume !false; {2722#false} is VALID [2022-04-15 08:13:37,140 INFO L290 TraceCheckUtils]: 36: Hoare triple {2722#false} assume 0 == ~cond; {2722#false} is VALID [2022-04-15 08:13:37,140 INFO L290 TraceCheckUtils]: 35: Hoare triple {2722#false} ~cond := #in~cond; {2722#false} is VALID [2022-04-15 08:13:37,140 INFO L272 TraceCheckUtils]: 34: Hoare triple {2722#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2722#false} is VALID [2022-04-15 08:13:37,140 INFO L290 TraceCheckUtils]: 33: Hoare triple {2854#(< |main_#t~post4| 5)} assume !(#t~post4 < 5);havoc #t~post4; {2722#false} is VALID [2022-04-15 08:13:37,141 INFO L290 TraceCheckUtils]: 32: Hoare triple {2858#(< ~counter~0 5)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2854#(< |main_#t~post4| 5)} is VALID [2022-04-15 08:13:37,141 INFO L290 TraceCheckUtils]: 31: Hoare triple {2858#(< ~counter~0 5)} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {2858#(< ~counter~0 5)} is VALID [2022-04-15 08:13:37,142 INFO L290 TraceCheckUtils]: 30: Hoare triple {2858#(< ~counter~0 5)} assume !!(~b~0 % 4294967296 != ~B~0 % 4294967296);~q~0 := 2 * ~q~0;~b~0 := (if ~b~0 % 4294967296 < 0 && 0 != ~b~0 % 4294967296 % 2 then 1 + ~b~0 % 4294967296 / 2 else ~b~0 % 4294967296 / 2); {2858#(< ~counter~0 5)} is VALID [2022-04-15 08:13:37,142 INFO L284 TraceCheckUtils]: 29: Hoare quadruple {2721#true} {2858#(< ~counter~0 5)} #85#return; {2858#(< ~counter~0 5)} is VALID [2022-04-15 08:13:37,142 INFO L290 TraceCheckUtils]: 28: Hoare triple {2721#true} assume true; {2721#true} is VALID [2022-04-15 08:13:37,142 INFO L290 TraceCheckUtils]: 27: Hoare triple {2721#true} assume !(0 == ~cond); {2721#true} is VALID [2022-04-15 08:13:37,142 INFO L290 TraceCheckUtils]: 26: Hoare triple {2721#true} ~cond := #in~cond; {2721#true} is VALID [2022-04-15 08:13:37,143 INFO L272 TraceCheckUtils]: 25: Hoare triple {2858#(< ~counter~0 5)} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2721#true} is VALID [2022-04-15 08:13:37,143 INFO L290 TraceCheckUtils]: 24: Hoare triple {2858#(< ~counter~0 5)} assume !!(#t~post4 < 5);havoc #t~post4; {2858#(< ~counter~0 5)} is VALID [2022-04-15 08:13:37,144 INFO L290 TraceCheckUtils]: 23: Hoare triple {2798#(<= ~counter~0 3)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2858#(< ~counter~0 5)} is VALID [2022-04-15 08:13:37,144 INFO L290 TraceCheckUtils]: 22: Hoare triple {2798#(<= ~counter~0 3)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {2798#(<= ~counter~0 3)} is VALID [2022-04-15 08:13:37,145 INFO L290 TraceCheckUtils]: 21: Hoare triple {2798#(<= ~counter~0 3)} assume !!(#t~post3 < 5);havoc #t~post3; {2798#(<= ~counter~0 3)} is VALID [2022-04-15 08:13:37,145 INFO L290 TraceCheckUtils]: 20: Hoare triple {2788#(<= ~counter~0 2)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2798#(<= ~counter~0 3)} is VALID [2022-04-15 08:13:37,145 INFO L290 TraceCheckUtils]: 19: Hoare triple {2788#(<= ~counter~0 2)} assume !!(~r~0 % 4294967296 >= ~b~0 % 4294967296);~b~0 := 2 * ~b~0; {2788#(<= ~counter~0 2)} is VALID [2022-04-15 08:13:37,146 INFO L290 TraceCheckUtils]: 18: Hoare triple {2788#(<= ~counter~0 2)} assume !!(#t~post3 < 5);havoc #t~post3; {2788#(<= ~counter~0 2)} is VALID [2022-04-15 08:13:37,146 INFO L290 TraceCheckUtils]: 17: Hoare triple {2778#(<= ~counter~0 1)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2788#(<= ~counter~0 2)} is VALID [2022-04-15 08:13:37,147 INFO L290 TraceCheckUtils]: 16: Hoare triple {2778#(<= ~counter~0 1)} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {2778#(<= ~counter~0 1)} is VALID [2022-04-15 08:13:37,147 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {2721#true} {2778#(<= ~counter~0 1)} #83#return; {2778#(<= ~counter~0 1)} is VALID [2022-04-15 08:13:37,147 INFO L290 TraceCheckUtils]: 14: Hoare triple {2721#true} assume true; {2721#true} is VALID [2022-04-15 08:13:37,147 INFO L290 TraceCheckUtils]: 13: Hoare triple {2721#true} assume !(0 == ~cond); {2721#true} is VALID [2022-04-15 08:13:37,147 INFO L290 TraceCheckUtils]: 12: Hoare triple {2721#true} ~cond := #in~cond; {2721#true} is VALID [2022-04-15 08:13:37,147 INFO L272 TraceCheckUtils]: 11: Hoare triple {2778#(<= ~counter~0 1)} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {2721#true} is VALID [2022-04-15 08:13:37,148 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {2721#true} {2778#(<= ~counter~0 1)} #81#return; {2778#(<= ~counter~0 1)} is VALID [2022-04-15 08:13:37,148 INFO L290 TraceCheckUtils]: 9: Hoare triple {2721#true} assume true; {2721#true} is VALID [2022-04-15 08:13:37,148 INFO L290 TraceCheckUtils]: 8: Hoare triple {2721#true} assume !(0 == ~cond); {2721#true} is VALID [2022-04-15 08:13:37,149 INFO L290 TraceCheckUtils]: 7: Hoare triple {2721#true} ~cond := #in~cond; {2721#true} is VALID [2022-04-15 08:13:37,149 INFO L272 TraceCheckUtils]: 6: Hoare triple {2778#(<= ~counter~0 1)} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {2721#true} is VALID [2022-04-15 08:13:37,149 INFO L290 TraceCheckUtils]: 5: Hoare triple {2778#(<= ~counter~0 1)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {2778#(<= ~counter~0 1)} is VALID [2022-04-15 08:13:37,149 INFO L272 TraceCheckUtils]: 4: Hoare triple {2778#(<= ~counter~0 1)} call #t~ret5 := main(); {2778#(<= ~counter~0 1)} is VALID [2022-04-15 08:13:37,150 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2778#(<= ~counter~0 1)} {2721#true} #89#return; {2778#(<= ~counter~0 1)} is VALID [2022-04-15 08:13:37,150 INFO L290 TraceCheckUtils]: 2: Hoare triple {2778#(<= ~counter~0 1)} assume true; {2778#(<= ~counter~0 1)} is VALID [2022-04-15 08:13:37,150 INFO L290 TraceCheckUtils]: 1: Hoare triple {2721#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~counter~0 := 0; {2778#(<= ~counter~0 1)} is VALID [2022-04-15 08:13:37,150 INFO L272 TraceCheckUtils]: 0: Hoare triple {2721#true} call ULTIMATE.init(); {2721#true} is VALID [2022-04-15 08:13:37,151 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-15 08:13:37,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 08:13:37,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708092318] [2022-04-15 08:13:37,152 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-15 08:13:37,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653885763] [2022-04-15 08:13:37,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653885763] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 08:13:37,152 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-15 08:13:37,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-04-15 08:13:37,152 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 08:13:37,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [829636476] [2022-04-15 08:13:37,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [829636476] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 08:13:37,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 08:13:37,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-15 08:13:37,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624583786] [2022-04-15 08:13:37,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 08:13:37,153 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2022-04-15 08:13:37,153 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 08:13:37,153 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-15 08:13:37,178 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 08:13:37,178 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-15 08:13:37,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 08:13:37,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-15 08:13:37,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-04-15 08:13:37,179 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-15 08:13:37,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 08:13:37,390 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2022-04-15 08:13:37,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-15 08:13:37,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2022-04-15 08:13:37,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 08:13:37,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-15 08:13:37,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 66 transitions. [2022-04-15 08:13:37,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-15 08:13:37,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 66 transitions. [2022-04-15 08:13:37,393 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 8 states and 66 transitions. [2022-04-15 08:13:37,440 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 66 edges. 66 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 08:13:37,441 INFO L225 Difference]: With dead ends: 67 [2022-04-15 08:13:37,441 INFO L226 Difference]: Without dead ends: 60 [2022-04-15 08:13:37,442 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-04-15 08:13:37,442 INFO L913 BasicCegarLoop]: 32 mSDtfsCounter, 24 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 08:13:37,442 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 103 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 08:13:37,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-04-15 08:13:37,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2022-04-15 08:13:37,479 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 08:13:37,479 INFO L82 GeneralOperation]: Start isEquivalent. First operand 60 states. Second operand has 54 states, 40 states have (on average 1.225) internal successors, (49), 41 states have internal predecessors, (49), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-15 08:13:37,485 INFO L74 IsIncluded]: Start isIncluded. First operand 60 states. Second operand has 54 states, 40 states have (on average 1.225) internal successors, (49), 41 states have internal predecessors, (49), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-15 08:13:37,486 INFO L87 Difference]: Start difference. First operand 60 states. Second operand has 54 states, 40 states have (on average 1.225) internal successors, (49), 41 states have internal predecessors, (49), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-15 08:13:37,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 08:13:37,490 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2022-04-15 08:13:37,490 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2022-04-15 08:13:37,491 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 08:13:37,491 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 08:13:37,491 INFO L74 IsIncluded]: Start isIncluded. First operand has 54 states, 40 states have (on average 1.225) internal successors, (49), 41 states have internal predecessors, (49), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand 60 states. [2022-04-15 08:13:37,491 INFO L87 Difference]: Start difference. First operand has 54 states, 40 states have (on average 1.225) internal successors, (49), 41 states have internal predecessors, (49), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand 60 states. [2022-04-15 08:13:37,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 08:13:37,493 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2022-04-15 08:13:37,493 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2022-04-15 08:13:37,493 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 08:13:37,493 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 08:13:37,493 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 08:13:37,493 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 08:13:37,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 40 states have (on average 1.225) internal successors, (49), 41 states have internal predecessors, (49), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-15 08:13:37,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2022-04-15 08:13:37,494 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 38 [2022-04-15 08:13:37,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 08:13:37,495 INFO L478 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2022-04-15 08:13:37,495 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-15 08:13:37,495 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 54 states and 63 transitions. [2022-04-15 08:13:37,574 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 63 edges. 63 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 08:13:37,574 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2022-04-15 08:13:37,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-15 08:13:37,575 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 08:13:37,575 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 08:13:37,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-15 08:13:37,775 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 08:13:37,776 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 08:13:37,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 08:13:37,776 INFO L85 PathProgramCache]: Analyzing trace with hash 817777954, now seen corresponding path program 1 times [2022-04-15 08:13:37,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 08:13:37,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [226797597] [2022-04-15 08:13:37,777 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 08:13:37,777 INFO L85 PathProgramCache]: Analyzing trace with hash 817777954, now seen corresponding path program 2 times [2022-04-15 08:13:37,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 08:13:37,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991056352] [2022-04-15 08:13:37,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 08:13:37,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 08:13:37,793 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 08:13:37,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1178772268] [2022-04-15 08:13:37,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-15 08:13:37,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 08:13:37,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 08:13:37,794 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 08:13:37,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process