/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_unwindbound100.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-28 05:09:10,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-28 05:09:10,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-28 05:09:10,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-28 05:09:10,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-28 05:09:10,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-28 05:09:10,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-28 05:09:10,841 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-28 05:09:10,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-28 05:09:10,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-28 05:09:10,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-28 05:09:10,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-28 05:09:10,858 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-28 05:09:10,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-28 05:09:10,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-28 05:09:10,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-28 05:09:10,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-28 05:09:10,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-28 05:09:10,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-28 05:09:10,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-28 05:09:10,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-28 05:09:10,882 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-28 05:09:10,897 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-28 05:09:10,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-28 05:09:10,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-28 05:09:10,899 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-28 05:09:10,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-28 05:09:10,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-28 05:09:10,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-28 05:09:10,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-28 05:09:10,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-28 05:09:10,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-28 05:09:10,901 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-28 05:09:10,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-28 05:09:10,902 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-28 05:09:10,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-28 05:09:10,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-28 05:09:10,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-28 05:09:10,902 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-28 05:09:10,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-28 05:09:10,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 05:09:10,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-28 05:09:10,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-28 05:09:10,903 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-28 05:09:10,903 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-28 05:09:10,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-28 05:09:10,903 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-28 05:09:10,903 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-28 05:09:11,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-28 05:09:11,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-28 05:09:11,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-28 05:09:11,191 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-28 05:09:11,192 INFO L275 PluginConnector]: CDTParser initialized [2022-04-28 05:09:11,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound100.i [2022-04-28 05:09:11,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6101ecb5/1a29b1dec99d41a5b10d54daa55c9486/FLAGe5b2a0027 [2022-04-28 05:09:11,723 INFO L306 CDTParser]: Found 1 translation units. [2022-04-28 05:09:11,724 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound100.i [2022-04-28 05:09:11,733 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6101ecb5/1a29b1dec99d41a5b10d54daa55c9486/FLAGe5b2a0027 [2022-04-28 05:09:11,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6101ecb5/1a29b1dec99d41a5b10d54daa55c9486 [2022-04-28 05:09:11,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-28 05:09:11,754 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-28 05:09:11,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-28 05:09:11,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-28 05:09:11,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-28 05:09:11,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 05:09:11" (1/1) ... [2022-04-28 05:09:11,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c0cc664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 05:09:11, skipping insertion in model container [2022-04-28 05:09:11,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 05:09:11" (1/1) ... [2022-04-28 05:09:11,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-28 05:09:11,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-28 05:09:11,946 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_unwindbound100.i[950,963] [2022-04-28 05:09:11,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 05:09:11,971 INFO L203 MainTranslator]: Completed pre-run [2022-04-28 05:09:11,982 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_unwindbound100.i[950,963] [2022-04-28 05:09:11,988 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 05:09:11,999 INFO L208 MainTranslator]: Completed translation [2022-04-28 05:09:12,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 05:09:12 WrapperNode [2022-04-28 05:09:12,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-28 05:09:12,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-28 05:09:12,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-28 05:09:12,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-28 05:09:12,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 05:09:12" (1/1) ... [2022-04-28 05:09:12,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 05:09:12" (1/1) ... [2022-04-28 05:09:12,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 05:09:12" (1/1) ... [2022-04-28 05:09:12,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 05:09:12" (1/1) ... [2022-04-28 05:09:12,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 05:09:12" (1/1) ... [2022-04-28 05:09:12,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 05:09:12" (1/1) ... [2022-04-28 05:09:12,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 05:09:12" (1/1) ... [2022-04-28 05:09:12,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-28 05:09:12,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-28 05:09:12,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-28 05:09:12,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-28 05:09:12,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 05:09:12" (1/1) ... [2022-04-28 05:09:12,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 05:09:12,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 05:09:12,061 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-28 05:09:12,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-28 05:09:12,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-28 05:09:12,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-28 05:09:12,103 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-28 05:09:12,103 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-28 05:09:12,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-28 05:09:12,103 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-28 05:09:12,104 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-28 05:09:12,104 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-28 05:09:12,104 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-28 05:09:12,104 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-28 05:09:12,105 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-28 05:09:12,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-28 05:09:12,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-28 05:09:12,106 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-28 05:09:12,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-28 05:09:12,106 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-28 05:09:12,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-28 05:09:12,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-28 05:09:12,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-28 05:09:12,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-28 05:09:12,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-28 05:09:12,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-28 05:09:12,188 INFO L234 CfgBuilder]: Building ICFG [2022-04-28 05:09:12,189 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-28 05:09:12,418 INFO L275 CfgBuilder]: Performing block encoding [2022-04-28 05:09:12,428 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-28 05:09:12,428 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-28 05:09:12,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 05:09:12 BoogieIcfgContainer [2022-04-28 05:09:12,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-28 05:09:12,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-28 05:09:12,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-28 05:09:12,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-28 05:09:12,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 05:09:11" (1/3) ... [2022-04-28 05:09:12,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@725bd89f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 05:09:12, skipping insertion in model container [2022-04-28 05:09:12,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 05:09:12" (2/3) ... [2022-04-28 05:09:12,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@725bd89f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 05:09:12, skipping insertion in model container [2022-04-28 05:09:12,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 05:09:12" (3/3) ... [2022-04-28 05:09:12,441 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_unwindbound100.i [2022-04-28 05:09:12,455 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-28 05:09:12,455 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-28 05:09:12,512 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-28 05:09:12,520 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6ae392e0, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6cfb4e31 [2022-04-28 05:09:12,521 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-28 05:09:12,538 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) [2022-04-28 05:09:12,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-28 05:09:12,548 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 05:09:12,549 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 05:09:12,549 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 05:09:12,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 05:09:12,556 INFO L85 PathProgramCache]: Analyzing trace with hash 878397729, now seen corresponding path program 1 times [2022-04-28 05:09:12,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 05:09:12,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [579938125] [2022-04-28 05:09:12,577 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 05:09:12,578 INFO L85 PathProgramCache]: Analyzing trace with hash 878397729, now seen corresponding path program 2 times [2022-04-28 05:09:12,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 05:09:12,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107942774] [2022-04-28 05:09:12,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 05:09:12,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 05:09:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 05:09:12,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 05:09:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 05:09:12,814 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 [2022-04-28 05:09:12,815 INFO L290 TraceCheckUtils]: 1: Hoare triple {36#true} assume true; {36#true} is VALID [2022-04-28 05:09:12,815 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {36#true} {36#true} #89#return; {36#true} is VALID [2022-04-28 05:09:12,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-28 05:09:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 05:09:12,840 INFO L290 TraceCheckUtils]: 0: Hoare triple {36#true} ~cond := #in~cond; {36#true} is VALID [2022-04-28 05:09:12,841 INFO L290 TraceCheckUtils]: 1: Hoare triple {36#true} assume 0 == ~cond;assume false; {37#false} is VALID [2022-04-28 05:09:12,841 INFO L290 TraceCheckUtils]: 2: Hoare triple {37#false} assume true; {37#false} is VALID [2022-04-28 05:09:12,841 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {37#false} {36#true} #81#return; {37#false} is VALID [2022-04-28 05:09:12,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-28 05:09:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 05:09:12,851 INFO L290 TraceCheckUtils]: 0: Hoare triple {36#true} ~cond := #in~cond; {36#true} is VALID [2022-04-28 05:09:12,852 INFO L290 TraceCheckUtils]: 1: Hoare triple {36#true} assume 0 == ~cond;assume false; {37#false} is VALID [2022-04-28 05:09:12,852 INFO L290 TraceCheckUtils]: 2: Hoare triple {37#false} assume true; {37#false} is VALID [2022-04-28 05:09:12,852 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {37#false} {37#false} #83#return; {37#false} is VALID [2022-04-28 05:09:12,853 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 [2022-04-28 05:09:12,853 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 [2022-04-28 05:09:12,854 INFO L290 TraceCheckUtils]: 2: Hoare triple {36#true} assume true; {36#true} is VALID [2022-04-28 05:09:12,854 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {36#true} {36#true} #89#return; {36#true} is VALID [2022-04-28 05:09:12,856 INFO L272 TraceCheckUtils]: 4: Hoare triple {36#true} call #t~ret5 := main(); {36#true} is VALID [2022-04-28 05:09:12,856 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 [2022-04-28 05:09:12,856 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 [2022-04-28 05:09:12,857 INFO L290 TraceCheckUtils]: 7: Hoare triple {36#true} ~cond := #in~cond; {36#true} is VALID [2022-04-28 05:09:12,857 INFO L290 TraceCheckUtils]: 8: Hoare triple {36#true} assume 0 == ~cond;assume false; {37#false} is VALID [2022-04-28 05:09:12,858 INFO L290 TraceCheckUtils]: 9: Hoare triple {37#false} assume true; {37#false} is VALID [2022-04-28 05:09:12,858 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {37#false} {36#true} #81#return; {37#false} is VALID [2022-04-28 05:09:12,858 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 [2022-04-28 05:09:12,858 INFO L290 TraceCheckUtils]: 12: Hoare triple {36#true} ~cond := #in~cond; {36#true} is VALID [2022-04-28 05:09:12,859 INFO L290 TraceCheckUtils]: 13: Hoare triple {36#true} assume 0 == ~cond;assume false; {37#false} is VALID [2022-04-28 05:09:12,859 INFO L290 TraceCheckUtils]: 14: Hoare triple {37#false} assume true; {37#false} is VALID [2022-04-28 05:09:12,859 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {37#false} {37#false} #83#return; {37#false} is VALID [2022-04-28 05:09:12,859 INFO L290 TraceCheckUtils]: 16: Hoare triple {37#false} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {37#false} is VALID [2022-04-28 05:09:12,859 INFO L290 TraceCheckUtils]: 17: Hoare triple {37#false} assume !true; {37#false} is VALID [2022-04-28 05:09:12,860 INFO L290 TraceCheckUtils]: 18: Hoare triple {37#false} assume !true; {37#false} is VALID [2022-04-28 05:09:12,861 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 [2022-04-28 05:09:12,861 INFO L290 TraceCheckUtils]: 20: Hoare triple {37#false} ~cond := #in~cond; {37#false} is VALID [2022-04-28 05:09:12,861 INFO L290 TraceCheckUtils]: 21: Hoare triple {37#false} assume 0 == ~cond; {37#false} is VALID [2022-04-28 05:09:12,861 INFO L290 TraceCheckUtils]: 22: Hoare triple {37#false} assume !false; {37#false} is VALID [2022-04-28 05:09:12,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 05:09:12,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 05:09:12,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107942774] [2022-04-28 05:09:12,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107942774] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 05:09:12,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 05:09:12,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 05:09:12,870 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 05:09:12,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [579938125] [2022-04-28 05:09:12,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [579938125] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 05:09:12,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 05:09:12,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 05:09:12,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793496227] [2022-04-28 05:09:12,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 05:09:12,878 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 [2022-04-28 05:09:12,880 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 05:09:12,884 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) [2022-04-28 05:09:12,926 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:09:12,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-28 05:09:12,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 05:09:12,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-28 05:09:12,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 05:09:12,958 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) [2022-04-28 05:09:13,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:09:13,164 INFO L93 Difference]: Finished difference Result 60 states and 84 transitions. [2022-04-28 05:09:13,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-28 05:09:13,165 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 [2022-04-28 05:09:13,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 05:09:13,166 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) [2022-04-28 05:09:13,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2022-04-28 05:09:13,174 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) [2022-04-28 05:09:13,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2022-04-28 05:09:13,179 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 84 transitions. [2022-04-28 05:09:13,276 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 84 edges. 84 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:09:13,284 INFO L225 Difference]: With dead ends: 60 [2022-04-28 05:09:13,284 INFO L226 Difference]: Without dead ends: 29 [2022-04-28 05:09:13,287 INFO L412 NwaCegarLoop]: 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 [2022-04-28 05:09:13,290 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-04-28 05:09:13,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 40 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-28 05:09:13,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-04-28 05:09:13,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2022-04-28 05:09:13,321 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 05:09:13,322 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) [2022-04-28 05:09:13,322 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) [2022-04-28 05:09:13,323 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) [2022-04-28 05:09:13,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:09:13,328 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2022-04-28 05:09:13,328 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-04-28 05:09:13,329 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:09:13,329 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:09:13,329 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. [2022-04-28 05:09:13,330 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. [2022-04-28 05:09:13,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:09:13,333 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2022-04-28 05:09:13,334 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-04-28 05:09:13,334 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:09:13,334 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:09:13,334 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 05:09:13,334 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 05:09:13,335 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) [2022-04-28 05:09:13,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2022-04-28 05:09:13,339 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 23 [2022-04-28 05:09:13,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 05:09:13,340 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2022-04-28 05:09:13,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (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) [2022-04-28 05:09:13,340 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 28 states and 34 transitions. [2022-04-28 05:09:13,378 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 34 edges. 34 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:09:13,378 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2022-04-28 05:09:13,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-04-28 05:09:13,379 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 05:09:13,379 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 05:09:13,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-28 05:09:13,380 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 05:09:13,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 05:09:13,380 INFO L85 PathProgramCache]: Analyzing trace with hash 994169231, now seen corresponding path program 1 times [2022-04-28 05:09:13,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 05:09:13,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1572891231] [2022-04-28 05:09:13,381 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 05:09:13,382 INFO L85 PathProgramCache]: Analyzing trace with hash 994169231, now seen corresponding path program 2 times [2022-04-28 05:09:13,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 05:09:13,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020299853] [2022-04-28 05:09:13,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 05:09:13,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 05:09:13,406 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 05:09:13,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [246953853] [2022-04-28 05:09:13,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 05:09:13,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 05:09:13,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 05:09:13,409 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-28 05:09:13,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-28 05:09:13,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-28 05:09:13,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 05:09:13,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-28 05:09:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 05:09:13,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 05:09:13,759 INFO L272 TraceCheckUtils]: 0: Hoare triple {286#true} call ULTIMATE.init(); {286#true} is VALID [2022-04-28 05:09:13,776 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 [2022-04-28 05:09:13,777 INFO L290 TraceCheckUtils]: 2: Hoare triple {294#(<= ~counter~0 0)} assume true; {294#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:13,777 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {294#(<= ~counter~0 0)} {286#true} #89#return; {294#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:13,778 INFO L272 TraceCheckUtils]: 4: Hoare triple {294#(<= ~counter~0 0)} call #t~ret5 := main(); {294#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:13,778 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 [2022-04-28 05:09:13,779 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 [2022-04-28 05:09:13,780 INFO L290 TraceCheckUtils]: 7: Hoare triple {294#(<= ~counter~0 0)} ~cond := #in~cond; {294#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:13,780 INFO L290 TraceCheckUtils]: 8: Hoare triple {294#(<= ~counter~0 0)} assume !(0 == ~cond); {294#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:13,781 INFO L290 TraceCheckUtils]: 9: Hoare triple {294#(<= ~counter~0 0)} assume true; {294#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:13,781 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {294#(<= ~counter~0 0)} {294#(<= ~counter~0 0)} #81#return; {294#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:13,782 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 [2022-04-28 05:09:13,782 INFO L290 TraceCheckUtils]: 12: Hoare triple {294#(<= ~counter~0 0)} ~cond := #in~cond; {294#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:13,783 INFO L290 TraceCheckUtils]: 13: Hoare triple {294#(<= ~counter~0 0)} assume !(0 == ~cond); {294#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:13,783 INFO L290 TraceCheckUtils]: 14: Hoare triple {294#(<= ~counter~0 0)} assume true; {294#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:13,784 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {294#(<= ~counter~0 0)} {294#(<= ~counter~0 0)} #83#return; {294#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:13,784 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 [2022-04-28 05:09:13,785 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 [2022-04-28 05:09:13,786 INFO L290 TraceCheckUtils]: 18: Hoare triple {343#(<= |main_#t~post3| 0)} assume !(#t~post3 < 100);havoc #t~post3; {287#false} is VALID [2022-04-28 05:09:13,786 INFO L290 TraceCheckUtils]: 19: Hoare triple {287#false} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {287#false} is VALID [2022-04-28 05:09:13,786 INFO L290 TraceCheckUtils]: 20: Hoare triple {287#false} assume !(#t~post4 < 100);havoc #t~post4; {287#false} is VALID [2022-04-28 05:09:13,786 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 [2022-04-28 05:09:13,787 INFO L290 TraceCheckUtils]: 22: Hoare triple {287#false} ~cond := #in~cond; {287#false} is VALID [2022-04-28 05:09:13,787 INFO L290 TraceCheckUtils]: 23: Hoare triple {287#false} assume 0 == ~cond; {287#false} is VALID [2022-04-28 05:09:13,787 INFO L290 TraceCheckUtils]: 24: Hoare triple {287#false} assume !false; {287#false} is VALID [2022-04-28 05:09:13,787 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 05:09:13,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 05:09:13,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 05:09:13,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020299853] [2022-04-28 05:09:13,788 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 05:09:13,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246953853] [2022-04-28 05:09:13,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246953853] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 05:09:13,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 05:09:13,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 05:09:13,790 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 05:09:13,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1572891231] [2022-04-28 05:09:13,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1572891231] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 05:09:13,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 05:09:13,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 05:09:13,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580125038] [2022-04-28 05:09:13,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 05:09:13,791 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 [2022-04-28 05:09:13,792 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 05:09:13,792 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) [2022-04-28 05:09:13,811 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:09:13,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-28 05:09:13,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 05:09:13,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-28 05:09:13,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 05:09:13,813 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) [2022-04-28 05:09:13,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:09:13,938 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2022-04-28 05:09:13,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-28 05:09:13,939 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 [2022-04-28 05:09:13,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 05:09:13,939 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) [2022-04-28 05:09:13,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2022-04-28 05:09:13,943 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) [2022-04-28 05:09:13,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2022-04-28 05:09:13,945 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 52 transitions. [2022-04-28 05:09:14,006 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 52 edges. 52 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:09:14,010 INFO L225 Difference]: With dead ends: 42 [2022-04-28 05:09:14,010 INFO L226 Difference]: Without dead ends: 30 [2022-04-28 05:09:14,011 INFO L412 NwaCegarLoop]: 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 [2022-04-28 05:09:14,014 INFO L413 NwaCegarLoop]: 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 [2022-04-28 05:09:14,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 05:09:14,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-04-28 05:09:14,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-04-28 05:09:14,037 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 05:09:14,038 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) [2022-04-28 05:09:14,038 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) [2022-04-28 05:09:14,038 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) [2022-04-28 05:09:14,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:09:14,043 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2022-04-28 05:09:14,043 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-04-28 05:09:14,043 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:09:14,043 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:09:14,044 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. [2022-04-28 05:09:14,044 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. [2022-04-28 05:09:14,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:09:14,047 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2022-04-28 05:09:14,047 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-04-28 05:09:14,047 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:09:14,047 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:09:14,047 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 05:09:14,047 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 05:09:14,048 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) [2022-04-28 05:09:14,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2022-04-28 05:09:14,050 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 25 [2022-04-28 05:09:14,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 05:09:14,050 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-04-28 05:09:14,051 INFO L496 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) [2022-04-28 05:09:14,051 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 30 states and 36 transitions. [2022-04-28 05:09:14,085 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:09:14,085 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-04-28 05:09:14,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-04-28 05:09:14,086 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 05:09:14,086 INFO L195 NwaCegarLoop]: 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] [2022-04-28 05:09:14,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-28 05:09:14,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 05:09:14,308 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 05:09:14,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 05:09:14,308 INFO L85 PathProgramCache]: Analyzing trace with hash 422434646, now seen corresponding path program 1 times [2022-04-28 05:09:14,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 05:09:14,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1124592411] [2022-04-28 05:09:14,309 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 05:09:14,309 INFO L85 PathProgramCache]: Analyzing trace with hash 422434646, now seen corresponding path program 2 times [2022-04-28 05:09:14,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 05:09:14,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784619885] [2022-04-28 05:09:14,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 05:09:14,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 05:09:14,339 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 05:09:14,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [125368163] [2022-04-28 05:09:14,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 05:09:14,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 05:09:14,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 05:09:14,341 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-28 05:09:14,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-28 05:09:14,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-28 05:09:14,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 05:09:14,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-28 05:09:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 05:09:14,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 05:09:14,607 INFO L272 TraceCheckUtils]: 0: Hoare triple {568#true} call ULTIMATE.init(); {568#true} is VALID [2022-04-28 05:09:14,609 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 [2022-04-28 05:09:14,609 INFO L290 TraceCheckUtils]: 2: Hoare triple {576#(<= ~counter~0 0)} assume true; {576#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:14,610 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {576#(<= ~counter~0 0)} {568#true} #89#return; {576#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:14,610 INFO L272 TraceCheckUtils]: 4: Hoare triple {576#(<= ~counter~0 0)} call #t~ret5 := main(); {576#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:14,611 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 [2022-04-28 05:09:14,611 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 [2022-04-28 05:09:14,612 INFO L290 TraceCheckUtils]: 7: Hoare triple {576#(<= ~counter~0 0)} ~cond := #in~cond; {576#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:14,612 INFO L290 TraceCheckUtils]: 8: Hoare triple {576#(<= ~counter~0 0)} assume !(0 == ~cond); {576#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:14,613 INFO L290 TraceCheckUtils]: 9: Hoare triple {576#(<= ~counter~0 0)} assume true; {576#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:14,613 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {576#(<= ~counter~0 0)} {576#(<= ~counter~0 0)} #81#return; {576#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:14,614 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 [2022-04-28 05:09:14,614 INFO L290 TraceCheckUtils]: 12: Hoare triple {576#(<= ~counter~0 0)} ~cond := #in~cond; {576#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:14,614 INFO L290 TraceCheckUtils]: 13: Hoare triple {576#(<= ~counter~0 0)} assume !(0 == ~cond); {576#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:14,615 INFO L290 TraceCheckUtils]: 14: Hoare triple {576#(<= ~counter~0 0)} assume true; {576#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:14,615 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {576#(<= ~counter~0 0)} {576#(<= ~counter~0 0)} #83#return; {576#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:14,616 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 [2022-04-28 05:09:14,616 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 [2022-04-28 05:09:14,617 INFO L290 TraceCheckUtils]: 18: Hoare triple {625#(<= ~counter~0 1)} assume !!(#t~post3 < 100);havoc #t~post3; {625#(<= ~counter~0 1)} is VALID [2022-04-28 05:09:14,617 INFO L290 TraceCheckUtils]: 19: Hoare triple {625#(<= ~counter~0 1)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {625#(<= ~counter~0 1)} is VALID [2022-04-28 05:09:14,618 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 [2022-04-28 05:09:14,618 INFO L290 TraceCheckUtils]: 21: Hoare triple {635#(<= |main_#t~post4| 1)} assume !(#t~post4 < 100);havoc #t~post4; {569#false} is VALID [2022-04-28 05:09:14,619 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 [2022-04-28 05:09:14,619 INFO L290 TraceCheckUtils]: 23: Hoare triple {569#false} ~cond := #in~cond; {569#false} is VALID [2022-04-28 05:09:14,619 INFO L290 TraceCheckUtils]: 24: Hoare triple {569#false} assume 0 == ~cond; {569#false} is VALID [2022-04-28 05:09:14,619 INFO L290 TraceCheckUtils]: 25: Hoare triple {569#false} assume !false; {569#false} is VALID [2022-04-28 05:09:14,619 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 05:09:14,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 05:09:14,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 05:09:14,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784619885] [2022-04-28 05:09:14,620 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 05:09:14,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125368163] [2022-04-28 05:09:14,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125368163] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 05:09:14,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 05:09:14,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 05:09:14,621 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 05:09:14,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1124592411] [2022-04-28 05:09:14,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1124592411] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 05:09:14,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 05:09:14,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 05:09:14,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748214401] [2022-04-28 05:09:14,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 05:09:14,622 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 [2022-04-28 05:09:14,622 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 05:09:14,622 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) [2022-04-28 05:09:14,641 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:09:14,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-28 05:09:14,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 05:09:14,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-28 05:09:14,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-28 05:09:14,642 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) [2022-04-28 05:09:14,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:09:14,759 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-04-28 05:09:14,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-28 05:09:14,759 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 [2022-04-28 05:09:14,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 05:09:14,760 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) [2022-04-28 05:09:14,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 48 transitions. [2022-04-28 05:09:14,763 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) [2022-04-28 05:09:14,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 48 transitions. [2022-04-28 05:09:14,765 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 48 transitions. [2022-04-28 05:09:14,804 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 48 edges. 48 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:09:14,806 INFO L225 Difference]: With dead ends: 41 [2022-04-28 05:09:14,806 INFO L226 Difference]: Without dead ends: 34 [2022-04-28 05:09:14,806 INFO L412 NwaCegarLoop]: 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 [2022-04-28 05:09:14,807 INFO L413 NwaCegarLoop]: 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 [2022-04-28 05:09:14,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 82 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 05:09:14,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-04-28 05:09:14,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-04-28 05:09:14,821 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 05:09:14,821 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) [2022-04-28 05:09:14,821 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) [2022-04-28 05:09:14,822 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) [2022-04-28 05:09:14,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:09:14,824 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2022-04-28 05:09:14,824 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2022-04-28 05:09:14,825 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:09:14,825 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:09:14,825 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. [2022-04-28 05:09:14,826 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. [2022-04-28 05:09:14,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:09:14,828 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2022-04-28 05:09:14,828 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2022-04-28 05:09:14,829 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:09:14,829 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:09:14,829 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 05:09:14,829 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 05:09:14,829 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) [2022-04-28 05:09:14,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-04-28 05:09:14,831 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 26 [2022-04-28 05:09:14,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 05:09:14,832 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-04-28 05:09:14,832 INFO L496 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) [2022-04-28 05:09:14,832 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 33 states and 40 transitions. [2022-04-28 05:09:14,867 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 40 edges. 40 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:09:14,867 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2022-04-28 05:09:14,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-04-28 05:09:14,868 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 05:09:14,868 INFO L195 NwaCegarLoop]: 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] [2022-04-28 05:09:14,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-28 05:09:15,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-28 05:09:15,092 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 05:09:15,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 05:09:15,092 INFO L85 PathProgramCache]: Analyzing trace with hash 424222106, now seen corresponding path program 1 times [2022-04-28 05:09:15,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 05:09:15,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1762827113] [2022-04-28 05:09:15,093 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 05:09:15,093 INFO L85 PathProgramCache]: Analyzing trace with hash 424222106, now seen corresponding path program 2 times [2022-04-28 05:09:15,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 05:09:15,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853030765] [2022-04-28 05:09:15,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 05:09:15,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 05:09:15,110 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 05:09:15,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1232129485] [2022-04-28 05:09:15,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 05:09:15,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 05:09:15,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 05:09:15,112 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-28 05:09:15,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-28 05:09:15,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-28 05:09:15,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 05:09:15,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-28 05:09:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 05:09:15,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 05:09:15,716 INFO L272 TraceCheckUtils]: 0: Hoare triple {866#true} call ULTIMATE.init(); {866#true} is VALID [2022-04-28 05:09:15,716 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 [2022-04-28 05:09:15,717 INFO L290 TraceCheckUtils]: 2: Hoare triple {866#true} assume true; {866#true} is VALID [2022-04-28 05:09:15,717 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {866#true} {866#true} #89#return; {866#true} is VALID [2022-04-28 05:09:15,718 INFO L272 TraceCheckUtils]: 4: Hoare triple {866#true} call #t~ret5 := main(); {866#true} is VALID [2022-04-28 05:09:15,718 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 [2022-04-28 05:09:15,718 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 [2022-04-28 05:09:15,718 INFO L290 TraceCheckUtils]: 7: Hoare triple {866#true} ~cond := #in~cond; {866#true} is VALID [2022-04-28 05:09:15,718 INFO L290 TraceCheckUtils]: 8: Hoare triple {866#true} assume !(0 == ~cond); {866#true} is VALID [2022-04-28 05:09:15,719 INFO L290 TraceCheckUtils]: 9: Hoare triple {866#true} assume true; {866#true} is VALID [2022-04-28 05:09:15,719 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {866#true} {866#true} #81#return; {866#true} is VALID [2022-04-28 05:09:15,719 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 [2022-04-28 05:09:15,719 INFO L290 TraceCheckUtils]: 12: Hoare triple {866#true} ~cond := #in~cond; {866#true} is VALID [2022-04-28 05:09:15,719 INFO L290 TraceCheckUtils]: 13: Hoare triple {866#true} assume !(0 == ~cond); {866#true} is VALID [2022-04-28 05:09:15,719 INFO L290 TraceCheckUtils]: 14: Hoare triple {866#true} assume true; {866#true} is VALID [2022-04-28 05:09:15,720 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {866#true} {866#true} #83#return; {866#true} is VALID [2022-04-28 05:09:15,723 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 [2022-04-28 05:09:15,724 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 [2022-04-28 05:09:15,725 INFO L290 TraceCheckUtils]: 18: Hoare triple {919#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !!(#t~post3 < 100);havoc #t~post3; {919#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 05:09:15,726 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 [2022-04-28 05:09:15,726 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 [2022-04-28 05:09:15,727 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 < 100);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 [2022-04-28 05:09:15,728 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 [2022-04-28 05:09:15,728 INFO L290 TraceCheckUtils]: 23: Hoare triple {939#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {943#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 05:09:15,729 INFO L290 TraceCheckUtils]: 24: Hoare triple {943#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {867#false} is VALID [2022-04-28 05:09:15,730 INFO L290 TraceCheckUtils]: 25: Hoare triple {867#false} assume !false; {867#false} is VALID [2022-04-28 05:09:15,730 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 05:09:15,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 05:09:15,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 05:09:15,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853030765] [2022-04-28 05:09:15,730 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 05:09:15,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232129485] [2022-04-28 05:09:15,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232129485] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 05:09:15,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 05:09:15,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-28 05:09:15,731 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 05:09:15,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1762827113] [2022-04-28 05:09:15,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1762827113] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 05:09:15,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 05:09:15,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-28 05:09:15,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255467732] [2022-04-28 05:09:15,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 05:09:15,732 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 [2022-04-28 05:09:15,733 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 05:09:15,733 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) [2022-04-28 05:09:15,774 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:09:15,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-28 05:09:15,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 05:09:15,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-28 05:09:15,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-28 05:09:15,775 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) [2022-04-28 05:09:17,997 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-04-28 05:09:18,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:09:18,145 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2022-04-28 05:09:18,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-28 05:09:18,145 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 [2022-04-28 05:09:18,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 05:09:18,146 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) [2022-04-28 05:09:18,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 57 transitions. [2022-04-28 05:09:18,148 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) [2022-04-28 05:09:18,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 57 transitions. [2022-04-28 05:09:18,149 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 57 transitions. [2022-04-28 05:09:18,244 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 57 edges. 57 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:09:18,246 INFO L225 Difference]: With dead ends: 50 [2022-04-28 05:09:18,246 INFO L226 Difference]: Without dead ends: 46 [2022-04-28 05:09:18,246 INFO L412 NwaCegarLoop]: 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 [2022-04-28 05:09:18,247 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 18 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-04-28 05:09:18,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 104 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-04-28 05:09:18,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-04-28 05:09:18,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 39. [2022-04-28 05:09:18,274 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 05:09:18,274 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) [2022-04-28 05:09:18,275 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) [2022-04-28 05:09:18,275 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) [2022-04-28 05:09:18,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:09:18,278 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2022-04-28 05:09:18,278 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2022-04-28 05:09:18,279 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:09:18,279 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:09:18,279 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. [2022-04-28 05:09:18,280 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. [2022-04-28 05:09:18,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:09:18,282 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2022-04-28 05:09:18,283 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2022-04-28 05:09:18,283 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:09:18,283 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:09:18,283 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 05:09:18,283 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 05:09:18,284 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) [2022-04-28 05:09:18,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2022-04-28 05:09:18,286 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 26 [2022-04-28 05:09:18,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 05:09:18,286 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2022-04-28 05:09:18,286 INFO L496 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) [2022-04-28 05:09:18,286 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 39 states and 46 transitions. [2022-04-28 05:09:18,336 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 46 edges. 46 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:09:18,336 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2022-04-28 05:09:18,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-04-28 05:09:18,337 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 05:09:18,337 INFO L195 NwaCegarLoop]: 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] [2022-04-28 05:09:18,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-28 05:09:18,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 05:09:18,551 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 05:09:18,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 05:09:18,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1733722638, now seen corresponding path program 1 times [2022-04-28 05:09:18,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 05:09:18,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [270145741] [2022-04-28 05:09:18,553 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 05:09:18,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1733722638, now seen corresponding path program 2 times [2022-04-28 05:09:18,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 05:09:18,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285504180] [2022-04-28 05:09:18,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 05:09:18,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 05:09:18,570 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 05:09:18,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [588460408] [2022-04-28 05:09:18,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 05:09:18,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 05:09:18,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 05:09:18,572 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) [2022-04-28 05:09:18,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-28 05:09:18,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 05:09:18,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 05:09:18,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-28 05:09:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 05:09:18,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 05:09:18,885 INFO L272 TraceCheckUtils]: 0: Hoare triple {1221#true} call ULTIMATE.init(); {1221#true} is VALID [2022-04-28 05:09:18,886 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 [2022-04-28 05:09:18,887 INFO L290 TraceCheckUtils]: 2: Hoare triple {1229#(<= ~counter~0 0)} assume true; {1229#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:18,889 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1229#(<= ~counter~0 0)} {1221#true} #89#return; {1229#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:18,890 INFO L272 TraceCheckUtils]: 4: Hoare triple {1229#(<= ~counter~0 0)} call #t~ret5 := main(); {1229#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:18,905 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 [2022-04-28 05:09:18,906 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 [2022-04-28 05:09:18,907 INFO L290 TraceCheckUtils]: 7: Hoare triple {1229#(<= ~counter~0 0)} ~cond := #in~cond; {1229#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:18,907 INFO L290 TraceCheckUtils]: 8: Hoare triple {1229#(<= ~counter~0 0)} assume !(0 == ~cond); {1229#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:18,908 INFO L290 TraceCheckUtils]: 9: Hoare triple {1229#(<= ~counter~0 0)} assume true; {1229#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:18,912 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {1229#(<= ~counter~0 0)} {1229#(<= ~counter~0 0)} #81#return; {1229#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:18,913 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 [2022-04-28 05:09:18,913 INFO L290 TraceCheckUtils]: 12: Hoare triple {1229#(<= ~counter~0 0)} ~cond := #in~cond; {1229#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:18,914 INFO L290 TraceCheckUtils]: 13: Hoare triple {1229#(<= ~counter~0 0)} assume !(0 == ~cond); {1229#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:18,914 INFO L290 TraceCheckUtils]: 14: Hoare triple {1229#(<= ~counter~0 0)} assume true; {1229#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:18,915 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {1229#(<= ~counter~0 0)} {1229#(<= ~counter~0 0)} #83#return; {1229#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:18,915 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 [2022-04-28 05:09:18,916 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 [2022-04-28 05:09:18,917 INFO L290 TraceCheckUtils]: 18: Hoare triple {1278#(<= ~counter~0 1)} assume !!(#t~post3 < 100);havoc #t~post3; {1278#(<= ~counter~0 1)} is VALID [2022-04-28 05:09:18,917 INFO L290 TraceCheckUtils]: 19: Hoare triple {1278#(<= ~counter~0 1)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {1278#(<= ~counter~0 1)} is VALID [2022-04-28 05:09:18,918 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 [2022-04-28 05:09:18,918 INFO L290 TraceCheckUtils]: 21: Hoare triple {1288#(<= ~counter~0 2)} assume !!(#t~post4 < 100);havoc #t~post4; {1288#(<= ~counter~0 2)} is VALID [2022-04-28 05:09:18,919 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 [2022-04-28 05:09:18,919 INFO L290 TraceCheckUtils]: 23: Hoare triple {1288#(<= ~counter~0 2)} ~cond := #in~cond; {1288#(<= ~counter~0 2)} is VALID [2022-04-28 05:09:18,920 INFO L290 TraceCheckUtils]: 24: Hoare triple {1288#(<= ~counter~0 2)} assume !(0 == ~cond); {1288#(<= ~counter~0 2)} is VALID [2022-04-28 05:09:18,920 INFO L290 TraceCheckUtils]: 25: Hoare triple {1288#(<= ~counter~0 2)} assume true; {1288#(<= ~counter~0 2)} is VALID [2022-04-28 05:09:18,921 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {1288#(<= ~counter~0 2)} {1288#(<= ~counter~0 2)} #85#return; {1288#(<= ~counter~0 2)} is VALID [2022-04-28 05:09:18,921 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 [2022-04-28 05:09:18,921 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 [2022-04-28 05:09:18,922 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 [2022-04-28 05:09:18,922 INFO L290 TraceCheckUtils]: 30: Hoare triple {1316#(<= |main_#t~post4| 2)} assume !(#t~post4 < 100);havoc #t~post4; {1222#false} is VALID [2022-04-28 05:09:18,923 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 [2022-04-28 05:09:18,923 INFO L290 TraceCheckUtils]: 32: Hoare triple {1222#false} ~cond := #in~cond; {1222#false} is VALID [2022-04-28 05:09:18,923 INFO L290 TraceCheckUtils]: 33: Hoare triple {1222#false} assume 0 == ~cond; {1222#false} is VALID [2022-04-28 05:09:18,923 INFO L290 TraceCheckUtils]: 34: Hoare triple {1222#false} assume !false; {1222#false} is VALID [2022-04-28 05:09:18,924 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 05:09:18,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 05:09:19,186 INFO L290 TraceCheckUtils]: 34: Hoare triple {1222#false} assume !false; {1222#false} is VALID [2022-04-28 05:09:19,187 INFO L290 TraceCheckUtils]: 33: Hoare triple {1222#false} assume 0 == ~cond; {1222#false} is VALID [2022-04-28 05:09:19,187 INFO L290 TraceCheckUtils]: 32: Hoare triple {1222#false} ~cond := #in~cond; {1222#false} is VALID [2022-04-28 05:09:19,187 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 [2022-04-28 05:09:19,187 INFO L290 TraceCheckUtils]: 30: Hoare triple {1344#(< |main_#t~post4| 100)} assume !(#t~post4 < 100);havoc #t~post4; {1222#false} is VALID [2022-04-28 05:09:19,188 INFO L290 TraceCheckUtils]: 29: Hoare triple {1348#(< ~counter~0 100)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {1344#(< |main_#t~post4| 100)} is VALID [2022-04-28 05:09:19,190 INFO L290 TraceCheckUtils]: 28: Hoare triple {1348#(< ~counter~0 100)} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {1348#(< ~counter~0 100)} is VALID [2022-04-28 05:09:19,190 INFO L290 TraceCheckUtils]: 27: Hoare triple {1348#(< ~counter~0 100)} 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~0 100)} is VALID [2022-04-28 05:09:19,191 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {1221#true} {1348#(< ~counter~0 100)} #85#return; {1348#(< ~counter~0 100)} is VALID [2022-04-28 05:09:19,191 INFO L290 TraceCheckUtils]: 25: Hoare triple {1221#true} assume true; {1221#true} is VALID [2022-04-28 05:09:19,192 INFO L290 TraceCheckUtils]: 24: Hoare triple {1221#true} assume !(0 == ~cond); {1221#true} is VALID [2022-04-28 05:09:19,192 INFO L290 TraceCheckUtils]: 23: Hoare triple {1221#true} ~cond := #in~cond; {1221#true} is VALID [2022-04-28 05:09:19,192 INFO L272 TraceCheckUtils]: 22: Hoare triple {1348#(< ~counter~0 100)} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1221#true} is VALID [2022-04-28 05:09:19,192 INFO L290 TraceCheckUtils]: 21: Hoare triple {1348#(< ~counter~0 100)} assume !!(#t~post4 < 100);havoc #t~post4; {1348#(< ~counter~0 100)} is VALID [2022-04-28 05:09:19,193 INFO L290 TraceCheckUtils]: 20: Hoare triple {1376#(< ~counter~0 99)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {1348#(< ~counter~0 100)} is VALID [2022-04-28 05:09:19,194 INFO L290 TraceCheckUtils]: 19: Hoare triple {1376#(< ~counter~0 99)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {1376#(< ~counter~0 99)} is VALID [2022-04-28 05:09:19,194 INFO L290 TraceCheckUtils]: 18: Hoare triple {1376#(< ~counter~0 99)} assume !!(#t~post3 < 100);havoc #t~post3; {1376#(< ~counter~0 99)} is VALID [2022-04-28 05:09:19,195 INFO L290 TraceCheckUtils]: 17: Hoare triple {1386#(< ~counter~0 98)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {1376#(< ~counter~0 99)} is VALID [2022-04-28 05:09:19,195 INFO L290 TraceCheckUtils]: 16: Hoare triple {1386#(< ~counter~0 98)} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {1386#(< ~counter~0 98)} is VALID [2022-04-28 05:09:19,196 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {1221#true} {1386#(< ~counter~0 98)} #83#return; {1386#(< ~counter~0 98)} is VALID [2022-04-28 05:09:19,196 INFO L290 TraceCheckUtils]: 14: Hoare triple {1221#true} assume true; {1221#true} is VALID [2022-04-28 05:09:19,196 INFO L290 TraceCheckUtils]: 13: Hoare triple {1221#true} assume !(0 == ~cond); {1221#true} is VALID [2022-04-28 05:09:19,196 INFO L290 TraceCheckUtils]: 12: Hoare triple {1221#true} ~cond := #in~cond; {1221#true} is VALID [2022-04-28 05:09:19,197 INFO L272 TraceCheckUtils]: 11: Hoare triple {1386#(< ~counter~0 98)} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {1221#true} is VALID [2022-04-28 05:09:19,197 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {1221#true} {1386#(< ~counter~0 98)} #81#return; {1386#(< ~counter~0 98)} is VALID [2022-04-28 05:09:19,197 INFO L290 TraceCheckUtils]: 9: Hoare triple {1221#true} assume true; {1221#true} is VALID [2022-04-28 05:09:19,197 INFO L290 TraceCheckUtils]: 8: Hoare triple {1221#true} assume !(0 == ~cond); {1221#true} is VALID [2022-04-28 05:09:19,197 INFO L290 TraceCheckUtils]: 7: Hoare triple {1221#true} ~cond := #in~cond; {1221#true} is VALID [2022-04-28 05:09:19,198 INFO L272 TraceCheckUtils]: 6: Hoare triple {1386#(< ~counter~0 98)} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {1221#true} is VALID [2022-04-28 05:09:19,198 INFO L290 TraceCheckUtils]: 5: Hoare triple {1386#(< ~counter~0 98)} 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; {1386#(< ~counter~0 98)} is VALID [2022-04-28 05:09:19,198 INFO L272 TraceCheckUtils]: 4: Hoare triple {1386#(< ~counter~0 98)} call #t~ret5 := main(); {1386#(< ~counter~0 98)} is VALID [2022-04-28 05:09:19,199 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1386#(< ~counter~0 98)} {1221#true} #89#return; {1386#(< ~counter~0 98)} is VALID [2022-04-28 05:09:19,199 INFO L290 TraceCheckUtils]: 2: Hoare triple {1386#(< ~counter~0 98)} assume true; {1386#(< ~counter~0 98)} is VALID [2022-04-28 05:09:19,200 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; {1386#(< ~counter~0 98)} is VALID [2022-04-28 05:09:19,201 INFO L272 TraceCheckUtils]: 0: Hoare triple {1221#true} call ULTIMATE.init(); {1221#true} is VALID [2022-04-28 05:09:19,201 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 05:09:19,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 05:09:19,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285504180] [2022-04-28 05:09:19,201 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 05:09:19,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588460408] [2022-04-28 05:09:19,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588460408] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-28 05:09:19,202 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-28 05:09:19,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-04-28 05:09:19,202 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 05:09:19,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [270145741] [2022-04-28 05:09:19,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [270145741] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 05:09:19,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 05:09:19,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-28 05:09:19,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895200601] [2022-04-28 05:09:19,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 05:09:19,215 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 [2022-04-28 05:09:19,216 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 05:09:19,216 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) [2022-04-28 05:09:19,242 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:09:19,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-28 05:09:19,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 05:09:19,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-28 05:09:19,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-04-28 05:09:19,243 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) [2022-04-28 05:09:21,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:09:21,585 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2022-04-28 05:09:21,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-28 05:09:21,585 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 [2022-04-28 05:09:21,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 05:09:21,586 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) [2022-04-28 05:09:21,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 63 transitions. [2022-04-28 05:09:21,588 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) [2022-04-28 05:09:21,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 63 transitions. [2022-04-28 05:09:21,591 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 63 transitions. [2022-04-28 05:09:21,646 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 63 edges. 63 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:09:21,647 INFO L225 Difference]: With dead ends: 64 [2022-04-28 05:09:21,647 INFO L226 Difference]: Without dead ends: 57 [2022-04-28 05:09:21,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-04-28 05:09:21,649 INFO L413 NwaCegarLoop]: 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 [2022-04-28 05:09:21,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 115 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 05:09:21,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-04-28 05:09:21,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2022-04-28 05:09:21,694 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 05:09:21,694 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) [2022-04-28 05:09:21,694 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) [2022-04-28 05:09:21,695 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) [2022-04-28 05:09:21,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:09:21,697 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2022-04-28 05:09:21,697 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2022-04-28 05:09:21,698 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:09:21,698 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:09:21,698 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. [2022-04-28 05:09:21,698 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. [2022-04-28 05:09:21,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:09:21,705 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2022-04-28 05:09:21,705 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2022-04-28 05:09:21,706 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:09:21,706 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:09:21,706 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 05:09:21,706 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 05:09:21,708 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) [2022-04-28 05:09:21,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2022-04-28 05:09:21,713 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 35 [2022-04-28 05:09:21,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 05:09:21,713 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2022-04-28 05:09:21,714 INFO L496 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) [2022-04-28 05:09:21,714 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 51 states and 60 transitions. [2022-04-28 05:09:21,791 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 60 edges. 60 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:09:21,792 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2022-04-28 05:09:21,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-04-28 05:09:21,792 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 05:09:21,792 INFO L195 NwaCegarLoop]: 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] [2022-04-28 05:09:21,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-28 05:09:21,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 05:09:21,993 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 05:09:21,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 05:09:21,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1731935178, now seen corresponding path program 1 times [2022-04-28 05:09:21,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 05:09:21,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [838828039] [2022-04-28 05:09:21,994 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 05:09:21,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1731935178, now seen corresponding path program 2 times [2022-04-28 05:09:21,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 05:09:21,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647436843] [2022-04-28 05:09:21,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 05:09:21,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 05:09:22,011 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 05:09:22,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1163159656] [2022-04-28 05:09:22,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 05:09:22,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 05:09:22,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 05:09:22,013 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) [2022-04-28 05:09:22,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-28 05:09:22,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 05:09:22,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 05:09:22,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-28 05:09:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 05:09:22,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 05:09:22,164 INFO L272 TraceCheckUtils]: 0: Hoare triple {1786#true} call ULTIMATE.init(); {1786#true} is VALID [2022-04-28 05:09:22,165 INFO L290 TraceCheckUtils]: 1: Hoare triple {1786#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; {1786#true} is VALID [2022-04-28 05:09:22,165 INFO L290 TraceCheckUtils]: 2: Hoare triple {1786#true} assume true; {1786#true} is VALID [2022-04-28 05:09:22,165 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1786#true} {1786#true} #89#return; {1786#true} is VALID [2022-04-28 05:09:22,165 INFO L272 TraceCheckUtils]: 4: Hoare triple {1786#true} call #t~ret5 := main(); {1786#true} is VALID [2022-04-28 05:09:22,165 INFO L290 TraceCheckUtils]: 5: Hoare triple {1786#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; {1786#true} is VALID [2022-04-28 05:09:22,165 INFO L272 TraceCheckUtils]: 6: Hoare triple {1786#true} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {1786#true} is VALID [2022-04-28 05:09:22,165 INFO L290 TraceCheckUtils]: 7: Hoare triple {1786#true} ~cond := #in~cond; {1786#true} is VALID [2022-04-28 05:09:22,166 INFO L290 TraceCheckUtils]: 8: Hoare triple {1786#true} assume !(0 == ~cond); {1786#true} is VALID [2022-04-28 05:09:22,166 INFO L290 TraceCheckUtils]: 9: Hoare triple {1786#true} assume true; {1786#true} is VALID [2022-04-28 05:09:22,166 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {1786#true} {1786#true} #81#return; {1786#true} is VALID [2022-04-28 05:09:22,166 INFO L272 TraceCheckUtils]: 11: Hoare triple {1786#true} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {1786#true} is VALID [2022-04-28 05:09:22,166 INFO L290 TraceCheckUtils]: 12: Hoare triple {1786#true} ~cond := #in~cond; {1786#true} is VALID [2022-04-28 05:09:22,166 INFO L290 TraceCheckUtils]: 13: Hoare triple {1786#true} assume !(0 == ~cond); {1786#true} is VALID [2022-04-28 05:09:22,166 INFO L290 TraceCheckUtils]: 14: Hoare triple {1786#true} assume true; {1786#true} is VALID [2022-04-28 05:09:22,166 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {1786#true} {1786#true} #83#return; {1786#true} is VALID [2022-04-28 05:09:22,167 INFO L290 TraceCheckUtils]: 16: Hoare triple {1786#true} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {1839#(= main_~B~0 main_~b~0)} is VALID [2022-04-28 05:09:22,167 INFO L290 TraceCheckUtils]: 17: Hoare triple {1839#(= main_~B~0 main_~b~0)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {1839#(= main_~B~0 main_~b~0)} is VALID [2022-04-28 05:09:22,171 INFO L290 TraceCheckUtils]: 18: Hoare triple {1839#(= main_~B~0 main_~b~0)} assume !!(#t~post3 < 100);havoc #t~post3; {1839#(= main_~B~0 main_~b~0)} is VALID [2022-04-28 05:09:22,172 INFO L290 TraceCheckUtils]: 19: Hoare triple {1839#(= main_~B~0 main_~b~0)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {1839#(= main_~B~0 main_~b~0)} is VALID [2022-04-28 05:09:22,172 INFO L290 TraceCheckUtils]: 20: Hoare triple {1839#(= main_~B~0 main_~b~0)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {1839#(= main_~B~0 main_~b~0)} is VALID [2022-04-28 05:09:22,173 INFO L290 TraceCheckUtils]: 21: Hoare triple {1839#(= main_~B~0 main_~b~0)} assume !!(#t~post4 < 100);havoc #t~post4; {1839#(= main_~B~0 main_~b~0)} is VALID [2022-04-28 05:09:22,173 INFO L272 TraceCheckUtils]: 22: Hoare triple {1839#(= main_~B~0 main_~b~0)} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1786#true} is VALID [2022-04-28 05:09:22,173 INFO L290 TraceCheckUtils]: 23: Hoare triple {1786#true} ~cond := #in~cond; {1786#true} is VALID [2022-04-28 05:09:22,173 INFO L290 TraceCheckUtils]: 24: Hoare triple {1786#true} assume !(0 == ~cond); {1786#true} is VALID [2022-04-28 05:09:22,173 INFO L290 TraceCheckUtils]: 25: Hoare triple {1786#true} assume true; {1786#true} is VALID [2022-04-28 05:09:22,175 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {1786#true} {1839#(= main_~B~0 main_~b~0)} #85#return; {1839#(= main_~B~0 main_~b~0)} is VALID [2022-04-28 05:09:22,175 INFO L290 TraceCheckUtils]: 27: Hoare triple {1839#(= 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); {1787#false} is VALID [2022-04-28 05:09:22,175 INFO L290 TraceCheckUtils]: 28: Hoare triple {1787#false} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {1787#false} is VALID [2022-04-28 05:09:22,176 INFO L290 TraceCheckUtils]: 29: Hoare triple {1787#false} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {1787#false} is VALID [2022-04-28 05:09:22,176 INFO L290 TraceCheckUtils]: 30: Hoare triple {1787#false} assume !!(#t~post4 < 100);havoc #t~post4; {1787#false} is VALID [2022-04-28 05:09:22,176 INFO L272 TraceCheckUtils]: 31: Hoare triple {1787#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1787#false} is VALID [2022-04-28 05:09:22,176 INFO L290 TraceCheckUtils]: 32: Hoare triple {1787#false} ~cond := #in~cond; {1787#false} is VALID [2022-04-28 05:09:22,176 INFO L290 TraceCheckUtils]: 33: Hoare triple {1787#false} assume 0 == ~cond; {1787#false} is VALID [2022-04-28 05:09:22,198 INFO L290 TraceCheckUtils]: 34: Hoare triple {1787#false} assume !false; {1787#false} is VALID [2022-04-28 05:09:22,198 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 05:09:22,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 05:09:22,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 05:09:22,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647436843] [2022-04-28 05:09:22,198 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 05:09:22,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163159656] [2022-04-28 05:09:22,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163159656] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 05:09:22,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 05:09:22,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 05:09:22,199 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 05:09:22,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [838828039] [2022-04-28 05:09:22,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [838828039] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 05:09:22,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 05:09:22,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 05:09:22,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770831995] [2022-04-28 05:09:22,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 05:09:22,200 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 [2022-04-28 05:09:22,200 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 05:09:22,200 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) [2022-04-28 05:09:22,226 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:09:22,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-28 05:09:22,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 05:09:22,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-28 05:09:22,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 05:09:22,227 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) [2022-04-28 05:09:22,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:09:22,354 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2022-04-28 05:09:22,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-28 05:09:22,354 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 [2022-04-28 05:09:22,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 05:09:22,355 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) [2022-04-28 05:09:22,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2022-04-28 05:09:22,357 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) [2022-04-28 05:09:22,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2022-04-28 05:09:22,358 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 58 transitions. [2022-04-28 05:09:22,422 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 58 edges. 58 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:09:22,423 INFO L225 Difference]: With dead ends: 72 [2022-04-28 05:09:22,424 INFO L226 Difference]: Without dead ends: 40 [2022-04-28 05:09:22,424 INFO L412 NwaCegarLoop]: 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 [2022-04-28 05:09:22,425 INFO L413 NwaCegarLoop]: 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 [2022-04-28 05:09:22,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 05:09:22,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-04-28 05:09:22,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-04-28 05:09:22,448 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 05:09:22,449 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) [2022-04-28 05:09:22,449 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) [2022-04-28 05:09:22,449 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) [2022-04-28 05:09:22,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:09:22,451 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2022-04-28 05:09:22,451 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2022-04-28 05:09:22,451 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:09:22,451 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:09:22,452 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. [2022-04-28 05:09:22,452 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. [2022-04-28 05:09:22,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:09:22,453 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2022-04-28 05:09:22,453 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2022-04-28 05:09:22,454 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:09:22,454 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:09:22,454 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 05:09:22,454 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 05:09:22,454 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) [2022-04-28 05:09:22,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2022-04-28 05:09:22,455 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 35 [2022-04-28 05:09:22,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 05:09:22,456 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2022-04-28 05:09:22,456 INFO L496 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) [2022-04-28 05:09:22,456 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 40 states and 47 transitions. [2022-04-28 05:09:22,512 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 47 edges. 47 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:09:22,512 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2022-04-28 05:09:22,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-04-28 05:09:22,513 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 05:09:22,513 INFO L195 NwaCegarLoop]: 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] [2022-04-28 05:09:22,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-04-28 05:09:22,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 05:09:22,732 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 05:09:22,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 05:09:22,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1874551443, now seen corresponding path program 1 times [2022-04-28 05:09:22,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 05:09:22,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [448851743] [2022-04-28 05:09:22,733 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 05:09:22,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1874551443, now seen corresponding path program 2 times [2022-04-28 05:09:22,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 05:09:22,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10840957] [2022-04-28 05:09:22,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 05:09:22,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 05:09:22,760 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 05:09:22,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1861418360] [2022-04-28 05:09:22,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 05:09:22,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 05:09:22,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 05:09:22,764 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) [2022-04-28 05:09:22,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-28 05:09:22,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 05:09:22,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 05:09:22,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-28 05:09:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 05:09:22,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 05:09:23,036 INFO L272 TraceCheckUtils]: 0: Hoare triple {2197#true} call ULTIMATE.init(); {2197#true} is VALID [2022-04-28 05:09:23,036 INFO L290 TraceCheckUtils]: 1: Hoare triple {2197#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; {2205#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:23,037 INFO L290 TraceCheckUtils]: 2: Hoare triple {2205#(<= ~counter~0 0)} assume true; {2205#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:23,037 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2205#(<= ~counter~0 0)} {2197#true} #89#return; {2205#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:23,038 INFO L272 TraceCheckUtils]: 4: Hoare triple {2205#(<= ~counter~0 0)} call #t~ret5 := main(); {2205#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:23,038 INFO L290 TraceCheckUtils]: 5: Hoare triple {2205#(<= ~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; {2205#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:23,038 INFO L272 TraceCheckUtils]: 6: Hoare triple {2205#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {2205#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:23,039 INFO L290 TraceCheckUtils]: 7: Hoare triple {2205#(<= ~counter~0 0)} ~cond := #in~cond; {2205#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:23,039 INFO L290 TraceCheckUtils]: 8: Hoare triple {2205#(<= ~counter~0 0)} assume !(0 == ~cond); {2205#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:23,039 INFO L290 TraceCheckUtils]: 9: Hoare triple {2205#(<= ~counter~0 0)} assume true; {2205#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:23,040 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {2205#(<= ~counter~0 0)} {2205#(<= ~counter~0 0)} #81#return; {2205#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:23,040 INFO L272 TraceCheckUtils]: 11: Hoare triple {2205#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {2205#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:23,041 INFO L290 TraceCheckUtils]: 12: Hoare triple {2205#(<= ~counter~0 0)} ~cond := #in~cond; {2205#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:23,041 INFO L290 TraceCheckUtils]: 13: Hoare triple {2205#(<= ~counter~0 0)} assume !(0 == ~cond); {2205#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:23,042 INFO L290 TraceCheckUtils]: 14: Hoare triple {2205#(<= ~counter~0 0)} assume true; {2205#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:23,043 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {2205#(<= ~counter~0 0)} {2205#(<= ~counter~0 0)} #83#return; {2205#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:23,043 INFO L290 TraceCheckUtils]: 16: Hoare triple {2205#(<= ~counter~0 0)} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {2205#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:23,044 INFO L290 TraceCheckUtils]: 17: Hoare triple {2205#(<= ~counter~0 0)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2254#(<= ~counter~0 1)} is VALID [2022-04-28 05:09:23,044 INFO L290 TraceCheckUtils]: 18: Hoare triple {2254#(<= ~counter~0 1)} assume !!(#t~post3 < 100);havoc #t~post3; {2254#(<= ~counter~0 1)} is VALID [2022-04-28 05:09:23,045 INFO L290 TraceCheckUtils]: 19: Hoare triple {2254#(<= ~counter~0 1)} assume !!(~r~0 % 4294967296 >= ~b~0 % 4294967296);~b~0 := 2 * ~b~0; {2254#(<= ~counter~0 1)} is VALID [2022-04-28 05:09:23,045 INFO L290 TraceCheckUtils]: 20: Hoare triple {2254#(<= ~counter~0 1)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2264#(<= |main_#t~post3| 1)} is VALID [2022-04-28 05:09:23,045 INFO L290 TraceCheckUtils]: 21: Hoare triple {2264#(<= |main_#t~post3| 1)} assume !(#t~post3 < 100);havoc #t~post3; {2198#false} is VALID [2022-04-28 05:09:23,046 INFO L290 TraceCheckUtils]: 22: Hoare triple {2198#false} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2198#false} is VALID [2022-04-28 05:09:23,046 INFO L290 TraceCheckUtils]: 23: Hoare triple {2198#false} assume !!(#t~post4 < 100);havoc #t~post4; {2198#false} is VALID [2022-04-28 05:09:23,046 INFO L272 TraceCheckUtils]: 24: Hoare triple {2198#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2198#false} is VALID [2022-04-28 05:09:23,046 INFO L290 TraceCheckUtils]: 25: Hoare triple {2198#false} ~cond := #in~cond; {2198#false} is VALID [2022-04-28 05:09:23,046 INFO L290 TraceCheckUtils]: 26: Hoare triple {2198#false} assume !(0 == ~cond); {2198#false} is VALID [2022-04-28 05:09:23,046 INFO L290 TraceCheckUtils]: 27: Hoare triple {2198#false} assume true; {2198#false} is VALID [2022-04-28 05:09:23,046 INFO L284 TraceCheckUtils]: 28: Hoare quadruple {2198#false} {2198#false} #85#return; {2198#false} is VALID [2022-04-28 05:09:23,047 INFO L290 TraceCheckUtils]: 29: Hoare triple {2198#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); {2198#false} is VALID [2022-04-28 05:09:23,047 INFO L290 TraceCheckUtils]: 30: Hoare triple {2198#false} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {2198#false} is VALID [2022-04-28 05:09:23,047 INFO L290 TraceCheckUtils]: 31: Hoare triple {2198#false} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2198#false} is VALID [2022-04-28 05:09:23,047 INFO L290 TraceCheckUtils]: 32: Hoare triple {2198#false} assume !(#t~post4 < 100);havoc #t~post4; {2198#false} is VALID [2022-04-28 05:09:23,047 INFO L272 TraceCheckUtils]: 33: Hoare triple {2198#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2198#false} is VALID [2022-04-28 05:09:23,047 INFO L290 TraceCheckUtils]: 34: Hoare triple {2198#false} ~cond := #in~cond; {2198#false} is VALID [2022-04-28 05:09:23,047 INFO L290 TraceCheckUtils]: 35: Hoare triple {2198#false} assume 0 == ~cond; {2198#false} is VALID [2022-04-28 05:09:23,047 INFO L290 TraceCheckUtils]: 36: Hoare triple {2198#false} assume !false; {2198#false} is VALID [2022-04-28 05:09:23,048 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-04-28 05:09:23,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 05:09:23,299 INFO L290 TraceCheckUtils]: 36: Hoare triple {2198#false} assume !false; {2198#false} is VALID [2022-04-28 05:09:23,299 INFO L290 TraceCheckUtils]: 35: Hoare triple {2198#false} assume 0 == ~cond; {2198#false} is VALID [2022-04-28 05:09:23,299 INFO L290 TraceCheckUtils]: 34: Hoare triple {2198#false} ~cond := #in~cond; {2198#false} is VALID [2022-04-28 05:09:23,299 INFO L272 TraceCheckUtils]: 33: Hoare triple {2198#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2198#false} is VALID [2022-04-28 05:09:23,299 INFO L290 TraceCheckUtils]: 32: Hoare triple {2198#false} assume !(#t~post4 < 100);havoc #t~post4; {2198#false} is VALID [2022-04-28 05:09:23,299 INFO L290 TraceCheckUtils]: 31: Hoare triple {2198#false} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2198#false} is VALID [2022-04-28 05:09:23,300 INFO L290 TraceCheckUtils]: 30: Hoare triple {2198#false} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {2198#false} is VALID [2022-04-28 05:09:23,300 INFO L290 TraceCheckUtils]: 29: Hoare triple {2198#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); {2198#false} is VALID [2022-04-28 05:09:23,300 INFO L284 TraceCheckUtils]: 28: Hoare quadruple {2197#true} {2198#false} #85#return; {2198#false} is VALID [2022-04-28 05:09:23,300 INFO L290 TraceCheckUtils]: 27: Hoare triple {2197#true} assume true; {2197#true} is VALID [2022-04-28 05:09:23,300 INFO L290 TraceCheckUtils]: 26: Hoare triple {2197#true} assume !(0 == ~cond); {2197#true} is VALID [2022-04-28 05:09:23,300 INFO L290 TraceCheckUtils]: 25: Hoare triple {2197#true} ~cond := #in~cond; {2197#true} is VALID [2022-04-28 05:09:23,300 INFO L272 TraceCheckUtils]: 24: Hoare triple {2198#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2197#true} is VALID [2022-04-28 05:09:23,300 INFO L290 TraceCheckUtils]: 23: Hoare triple {2198#false} assume !!(#t~post4 < 100);havoc #t~post4; {2198#false} is VALID [2022-04-28 05:09:23,300 INFO L290 TraceCheckUtils]: 22: Hoare triple {2198#false} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2198#false} is VALID [2022-04-28 05:09:23,303 INFO L290 TraceCheckUtils]: 21: Hoare triple {2358#(< |main_#t~post3| 100)} assume !(#t~post3 < 100);havoc #t~post3; {2198#false} is VALID [2022-04-28 05:09:23,304 INFO L290 TraceCheckUtils]: 20: Hoare triple {2362#(< ~counter~0 100)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2358#(< |main_#t~post3| 100)} is VALID [2022-04-28 05:09:23,304 INFO L290 TraceCheckUtils]: 19: Hoare triple {2362#(< ~counter~0 100)} assume !!(~r~0 % 4294967296 >= ~b~0 % 4294967296);~b~0 := 2 * ~b~0; {2362#(< ~counter~0 100)} is VALID [2022-04-28 05:09:23,305 INFO L290 TraceCheckUtils]: 18: Hoare triple {2362#(< ~counter~0 100)} assume !!(#t~post3 < 100);havoc #t~post3; {2362#(< ~counter~0 100)} is VALID [2022-04-28 05:09:23,306 INFO L290 TraceCheckUtils]: 17: Hoare triple {2372#(< ~counter~0 99)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2362#(< ~counter~0 100)} is VALID [2022-04-28 05:09:23,306 INFO L290 TraceCheckUtils]: 16: Hoare triple {2372#(< ~counter~0 99)} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {2372#(< ~counter~0 99)} is VALID [2022-04-28 05:09:23,307 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {2197#true} {2372#(< ~counter~0 99)} #83#return; {2372#(< ~counter~0 99)} is VALID [2022-04-28 05:09:23,307 INFO L290 TraceCheckUtils]: 14: Hoare triple {2197#true} assume true; {2197#true} is VALID [2022-04-28 05:09:23,307 INFO L290 TraceCheckUtils]: 13: Hoare triple {2197#true} assume !(0 == ~cond); {2197#true} is VALID [2022-04-28 05:09:23,307 INFO L290 TraceCheckUtils]: 12: Hoare triple {2197#true} ~cond := #in~cond; {2197#true} is VALID [2022-04-28 05:09:23,307 INFO L272 TraceCheckUtils]: 11: Hoare triple {2372#(< ~counter~0 99)} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {2197#true} is VALID [2022-04-28 05:09:23,308 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {2197#true} {2372#(< ~counter~0 99)} #81#return; {2372#(< ~counter~0 99)} is VALID [2022-04-28 05:09:23,308 INFO L290 TraceCheckUtils]: 9: Hoare triple {2197#true} assume true; {2197#true} is VALID [2022-04-28 05:09:23,308 INFO L290 TraceCheckUtils]: 8: Hoare triple {2197#true} assume !(0 == ~cond); {2197#true} is VALID [2022-04-28 05:09:23,308 INFO L290 TraceCheckUtils]: 7: Hoare triple {2197#true} ~cond := #in~cond; {2197#true} is VALID [2022-04-28 05:09:23,308 INFO L272 TraceCheckUtils]: 6: Hoare triple {2372#(< ~counter~0 99)} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {2197#true} is VALID [2022-04-28 05:09:23,309 INFO L290 TraceCheckUtils]: 5: Hoare triple {2372#(< ~counter~0 99)} 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; {2372#(< ~counter~0 99)} is VALID [2022-04-28 05:09:23,309 INFO L272 TraceCheckUtils]: 4: Hoare triple {2372#(< ~counter~0 99)} call #t~ret5 := main(); {2372#(< ~counter~0 99)} is VALID [2022-04-28 05:09:23,310 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2372#(< ~counter~0 99)} {2197#true} #89#return; {2372#(< ~counter~0 99)} is VALID [2022-04-28 05:09:23,310 INFO L290 TraceCheckUtils]: 2: Hoare triple {2372#(< ~counter~0 99)} assume true; {2372#(< ~counter~0 99)} is VALID [2022-04-28 05:09:23,311 INFO L290 TraceCheckUtils]: 1: Hoare triple {2197#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; {2372#(< ~counter~0 99)} is VALID [2022-04-28 05:09:23,311 INFO L272 TraceCheckUtils]: 0: Hoare triple {2197#true} call ULTIMATE.init(); {2197#true} is VALID [2022-04-28 05:09:23,311 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-04-28 05:09:23,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 05:09:23,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10840957] [2022-04-28 05:09:23,311 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 05:09:23,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861418360] [2022-04-28 05:09:23,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861418360] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-28 05:09:23,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-28 05:09:23,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-04-28 05:09:23,312 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 05:09:23,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [448851743] [2022-04-28 05:09:23,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [448851743] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 05:09:23,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 05:09:23,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 05:09:23,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316897951] [2022-04-28 05:09:23,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 05:09:23,313 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 [2022-04-28 05:09:23,313 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 05:09:23,313 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) [2022-04-28 05:09:23,341 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:09:23,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-28 05:09:23,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 05:09:23,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-28 05:09:23,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-04-28 05:09:23,342 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) [2022-04-28 05:09:23,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:09:23,502 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2022-04-28 05:09:23,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-28 05:09:23,502 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 [2022-04-28 05:09:23,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 05:09:23,503 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) [2022-04-28 05:09:23,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 55 transitions. [2022-04-28 05:09:23,504 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) [2022-04-28 05:09:23,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 55 transitions. [2022-04-28 05:09:23,506 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 55 transitions. [2022-04-28 05:09:23,544 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 55 edges. 55 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:09:23,545 INFO L225 Difference]: With dead ends: 63 [2022-04-28 05:09:23,546 INFO L226 Difference]: Without dead ends: 42 [2022-04-28 05:09:23,546 INFO L412 NwaCegarLoop]: 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 [2022-04-28 05:09:23,547 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 6 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 05:09:23,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 82 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 05:09:23,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-04-28 05:09:23,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-04-28 05:09:23,581 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 05:09:23,582 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) [2022-04-28 05:09:23,582 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) [2022-04-28 05:09:23,582 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) [2022-04-28 05:09:23,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:09:23,584 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2022-04-28 05:09:23,584 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2022-04-28 05:09:23,584 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:09:23,584 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:09:23,584 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. [2022-04-28 05:09:23,585 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. [2022-04-28 05:09:23,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:09:23,586 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2022-04-28 05:09:23,586 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2022-04-28 05:09:23,586 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:09:23,586 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:09:23,587 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 05:09:23,587 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 05:09:23,587 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) [2022-04-28 05:09:23,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2022-04-28 05:09:23,589 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 37 [2022-04-28 05:09:23,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 05:09:23,589 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2022-04-28 05:09:23,590 INFO L496 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) [2022-04-28 05:09:23,590 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 42 states and 49 transitions. [2022-04-28 05:09:23,643 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 49 edges. 49 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:09:23,643 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2022-04-28 05:09:23,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-28 05:09:23,644 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 05:09:23,644 INFO L195 NwaCegarLoop]: 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] [2022-04-28 05:09:23,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-28 05:09:23,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 05:09:23,854 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 05:09:23,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 05:09:23,855 INFO L85 PathProgramCache]: Analyzing trace with hash 815990494, now seen corresponding path program 1 times [2022-04-28 05:09:23,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 05:09:23,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1122451607] [2022-04-28 05:09:23,855 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 05:09:23,855 INFO L85 PathProgramCache]: Analyzing trace with hash 815990494, now seen corresponding path program 2 times [2022-04-28 05:09:23,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 05:09:23,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046279186] [2022-04-28 05:09:23,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 05:09:23,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 05:09:23,874 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 05:09:23,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [678905706] [2022-04-28 05:09:23,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 05:09:23,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 05:09:23,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 05:09:23,889 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) [2022-04-28 05:09:23,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-28 05:09:23,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 05:09:23,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 05:09:23,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-28 05:09:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 05:09:23,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 05:09:24,224 INFO L272 TraceCheckUtils]: 0: Hoare triple {2722#true} call ULTIMATE.init(); {2722#true} is VALID [2022-04-28 05:09:24,225 INFO L290 TraceCheckUtils]: 1: Hoare triple {2722#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; {2730#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:24,225 INFO L290 TraceCheckUtils]: 2: Hoare triple {2730#(<= ~counter~0 0)} assume true; {2730#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:24,226 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2730#(<= ~counter~0 0)} {2722#true} #89#return; {2730#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:24,227 INFO L272 TraceCheckUtils]: 4: Hoare triple {2730#(<= ~counter~0 0)} call #t~ret5 := main(); {2730#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:24,227 INFO L290 TraceCheckUtils]: 5: Hoare triple {2730#(<= ~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; {2730#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:24,228 INFO L272 TraceCheckUtils]: 6: Hoare triple {2730#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {2730#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:24,228 INFO L290 TraceCheckUtils]: 7: Hoare triple {2730#(<= ~counter~0 0)} ~cond := #in~cond; {2730#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:24,229 INFO L290 TraceCheckUtils]: 8: Hoare triple {2730#(<= ~counter~0 0)} assume !(0 == ~cond); {2730#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:24,229 INFO L290 TraceCheckUtils]: 9: Hoare triple {2730#(<= ~counter~0 0)} assume true; {2730#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:24,229 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {2730#(<= ~counter~0 0)} {2730#(<= ~counter~0 0)} #81#return; {2730#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:24,230 INFO L272 TraceCheckUtils]: 11: Hoare triple {2730#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {2730#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:24,230 INFO L290 TraceCheckUtils]: 12: Hoare triple {2730#(<= ~counter~0 0)} ~cond := #in~cond; {2730#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:24,230 INFO L290 TraceCheckUtils]: 13: Hoare triple {2730#(<= ~counter~0 0)} assume !(0 == ~cond); {2730#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:24,231 INFO L290 TraceCheckUtils]: 14: Hoare triple {2730#(<= ~counter~0 0)} assume true; {2730#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:24,231 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {2730#(<= ~counter~0 0)} {2730#(<= ~counter~0 0)} #83#return; {2730#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:24,231 INFO L290 TraceCheckUtils]: 16: Hoare triple {2730#(<= ~counter~0 0)} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {2730#(<= ~counter~0 0)} is VALID [2022-04-28 05:09:24,232 INFO L290 TraceCheckUtils]: 17: Hoare triple {2730#(<= ~counter~0 0)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2779#(<= ~counter~0 1)} is VALID [2022-04-28 05:09:24,232 INFO L290 TraceCheckUtils]: 18: Hoare triple {2779#(<= ~counter~0 1)} assume !!(#t~post3 < 100);havoc #t~post3; {2779#(<= ~counter~0 1)} is VALID [2022-04-28 05:09:24,232 INFO L290 TraceCheckUtils]: 19: Hoare triple {2779#(<= ~counter~0 1)} assume !!(~r~0 % 4294967296 >= ~b~0 % 4294967296);~b~0 := 2 * ~b~0; {2779#(<= ~counter~0 1)} is VALID [2022-04-28 05:09:24,233 INFO L290 TraceCheckUtils]: 20: Hoare triple {2779#(<= ~counter~0 1)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2789#(<= ~counter~0 2)} is VALID [2022-04-28 05:09:24,233 INFO L290 TraceCheckUtils]: 21: Hoare triple {2789#(<= ~counter~0 2)} assume !!(#t~post3 < 100);havoc #t~post3; {2789#(<= ~counter~0 2)} is VALID [2022-04-28 05:09:24,234 INFO L290 TraceCheckUtils]: 22: Hoare triple {2789#(<= ~counter~0 2)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {2789#(<= ~counter~0 2)} is VALID [2022-04-28 05:09:24,234 INFO L290 TraceCheckUtils]: 23: Hoare triple {2789#(<= ~counter~0 2)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2799#(<= ~counter~0 3)} is VALID [2022-04-28 05:09:24,234 INFO L290 TraceCheckUtils]: 24: Hoare triple {2799#(<= ~counter~0 3)} assume !!(#t~post4 < 100);havoc #t~post4; {2799#(<= ~counter~0 3)} is VALID [2022-04-28 05:09:24,236 INFO L272 TraceCheckUtils]: 25: Hoare triple {2799#(<= ~counter~0 3)} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2799#(<= ~counter~0 3)} is VALID [2022-04-28 05:09:24,236 INFO L290 TraceCheckUtils]: 26: Hoare triple {2799#(<= ~counter~0 3)} ~cond := #in~cond; {2799#(<= ~counter~0 3)} is VALID [2022-04-28 05:09:24,236 INFO L290 TraceCheckUtils]: 27: Hoare triple {2799#(<= ~counter~0 3)} assume !(0 == ~cond); {2799#(<= ~counter~0 3)} is VALID [2022-04-28 05:09:24,237 INFO L290 TraceCheckUtils]: 28: Hoare triple {2799#(<= ~counter~0 3)} assume true; {2799#(<= ~counter~0 3)} is VALID [2022-04-28 05:09:24,237 INFO L284 TraceCheckUtils]: 29: Hoare quadruple {2799#(<= ~counter~0 3)} {2799#(<= ~counter~0 3)} #85#return; {2799#(<= ~counter~0 3)} is VALID [2022-04-28 05:09:24,237 INFO L290 TraceCheckUtils]: 30: Hoare triple {2799#(<= ~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); {2799#(<= ~counter~0 3)} is VALID [2022-04-28 05:09:24,238 INFO L290 TraceCheckUtils]: 31: Hoare triple {2799#(<= ~counter~0 3)} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {2799#(<= ~counter~0 3)} is VALID [2022-04-28 05:09:24,238 INFO L290 TraceCheckUtils]: 32: Hoare triple {2799#(<= ~counter~0 3)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2827#(<= |main_#t~post4| 3)} is VALID [2022-04-28 05:09:24,238 INFO L290 TraceCheckUtils]: 33: Hoare triple {2827#(<= |main_#t~post4| 3)} assume !(#t~post4 < 100);havoc #t~post4; {2723#false} is VALID [2022-04-28 05:09:24,238 INFO L272 TraceCheckUtils]: 34: Hoare triple {2723#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2723#false} is VALID [2022-04-28 05:09:24,239 INFO L290 TraceCheckUtils]: 35: Hoare triple {2723#false} ~cond := #in~cond; {2723#false} is VALID [2022-04-28 05:09:24,239 INFO L290 TraceCheckUtils]: 36: Hoare triple {2723#false} assume 0 == ~cond; {2723#false} is VALID [2022-04-28 05:09:24,239 INFO L290 TraceCheckUtils]: 37: Hoare triple {2723#false} assume !false; {2723#false} is VALID [2022-04-28 05:09:24,239 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 05:09:24,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 05:09:24,578 INFO L290 TraceCheckUtils]: 37: Hoare triple {2723#false} assume !false; {2723#false} is VALID [2022-04-28 05:09:24,578 INFO L290 TraceCheckUtils]: 36: Hoare triple {2723#false} assume 0 == ~cond; {2723#false} is VALID [2022-04-28 05:09:24,578 INFO L290 TraceCheckUtils]: 35: Hoare triple {2723#false} ~cond := #in~cond; {2723#false} is VALID [2022-04-28 05:09:24,578 INFO L272 TraceCheckUtils]: 34: Hoare triple {2723#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2723#false} is VALID [2022-04-28 05:09:24,579 INFO L290 TraceCheckUtils]: 33: Hoare triple {2855#(< |main_#t~post4| 100)} assume !(#t~post4 < 100);havoc #t~post4; {2723#false} is VALID [2022-04-28 05:09:24,579 INFO L290 TraceCheckUtils]: 32: Hoare triple {2859#(< ~counter~0 100)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2855#(< |main_#t~post4| 100)} is VALID [2022-04-28 05:09:24,580 INFO L290 TraceCheckUtils]: 31: Hoare triple {2859#(< ~counter~0 100)} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {2859#(< ~counter~0 100)} is VALID [2022-04-28 05:09:24,580 INFO L290 TraceCheckUtils]: 30: Hoare triple {2859#(< ~counter~0 100)} 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); {2859#(< ~counter~0 100)} is VALID [2022-04-28 05:09:24,581 INFO L284 TraceCheckUtils]: 29: Hoare quadruple {2722#true} {2859#(< ~counter~0 100)} #85#return; {2859#(< ~counter~0 100)} is VALID [2022-04-28 05:09:24,581 INFO L290 TraceCheckUtils]: 28: Hoare triple {2722#true} assume true; {2722#true} is VALID [2022-04-28 05:09:24,581 INFO L290 TraceCheckUtils]: 27: Hoare triple {2722#true} assume !(0 == ~cond); {2722#true} is VALID [2022-04-28 05:09:24,581 INFO L290 TraceCheckUtils]: 26: Hoare triple {2722#true} ~cond := #in~cond; {2722#true} is VALID [2022-04-28 05:09:24,581 INFO L272 TraceCheckUtils]: 25: Hoare triple {2859#(< ~counter~0 100)} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2722#true} is VALID [2022-04-28 05:09:24,581 INFO L290 TraceCheckUtils]: 24: Hoare triple {2859#(< ~counter~0 100)} assume !!(#t~post4 < 100);havoc #t~post4; {2859#(< ~counter~0 100)} is VALID [2022-04-28 05:09:24,582 INFO L290 TraceCheckUtils]: 23: Hoare triple {2887#(< ~counter~0 99)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2859#(< ~counter~0 100)} is VALID [2022-04-28 05:09:24,583 INFO L290 TraceCheckUtils]: 22: Hoare triple {2887#(< ~counter~0 99)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {2887#(< ~counter~0 99)} is VALID [2022-04-28 05:09:24,583 INFO L290 TraceCheckUtils]: 21: Hoare triple {2887#(< ~counter~0 99)} assume !!(#t~post3 < 100);havoc #t~post3; {2887#(< ~counter~0 99)} is VALID [2022-04-28 05:09:24,584 INFO L290 TraceCheckUtils]: 20: Hoare triple {2897#(< ~counter~0 98)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2887#(< ~counter~0 99)} is VALID [2022-04-28 05:09:24,584 INFO L290 TraceCheckUtils]: 19: Hoare triple {2897#(< ~counter~0 98)} assume !!(~r~0 % 4294967296 >= ~b~0 % 4294967296);~b~0 := 2 * ~b~0; {2897#(< ~counter~0 98)} is VALID [2022-04-28 05:09:24,584 INFO L290 TraceCheckUtils]: 18: Hoare triple {2897#(< ~counter~0 98)} assume !!(#t~post3 < 100);havoc #t~post3; {2897#(< ~counter~0 98)} is VALID [2022-04-28 05:09:24,585 INFO L290 TraceCheckUtils]: 17: Hoare triple {2907#(< ~counter~0 97)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2897#(< ~counter~0 98)} is VALID [2022-04-28 05:09:24,585 INFO L290 TraceCheckUtils]: 16: Hoare triple {2907#(< ~counter~0 97)} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {2907#(< ~counter~0 97)} is VALID [2022-04-28 05:09:24,586 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {2722#true} {2907#(< ~counter~0 97)} #83#return; {2907#(< ~counter~0 97)} is VALID [2022-04-28 05:09:24,586 INFO L290 TraceCheckUtils]: 14: Hoare triple {2722#true} assume true; {2722#true} is VALID [2022-04-28 05:09:24,586 INFO L290 TraceCheckUtils]: 13: Hoare triple {2722#true} assume !(0 == ~cond); {2722#true} is VALID [2022-04-28 05:09:24,586 INFO L290 TraceCheckUtils]: 12: Hoare triple {2722#true} ~cond := #in~cond; {2722#true} is VALID [2022-04-28 05:09:24,586 INFO L272 TraceCheckUtils]: 11: Hoare triple {2907#(< ~counter~0 97)} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {2722#true} is VALID [2022-04-28 05:09:24,587 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {2722#true} {2907#(< ~counter~0 97)} #81#return; {2907#(< ~counter~0 97)} is VALID [2022-04-28 05:09:24,587 INFO L290 TraceCheckUtils]: 9: Hoare triple {2722#true} assume true; {2722#true} is VALID [2022-04-28 05:09:24,587 INFO L290 TraceCheckUtils]: 8: Hoare triple {2722#true} assume !(0 == ~cond); {2722#true} is VALID [2022-04-28 05:09:24,587 INFO L290 TraceCheckUtils]: 7: Hoare triple {2722#true} ~cond := #in~cond; {2722#true} is VALID [2022-04-28 05:09:24,587 INFO L272 TraceCheckUtils]: 6: Hoare triple {2907#(< ~counter~0 97)} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {2722#true} is VALID [2022-04-28 05:09:24,588 INFO L290 TraceCheckUtils]: 5: Hoare triple {2907#(< ~counter~0 97)} 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; {2907#(< ~counter~0 97)} is VALID [2022-04-28 05:09:24,588 INFO L272 TraceCheckUtils]: 4: Hoare triple {2907#(< ~counter~0 97)} call #t~ret5 := main(); {2907#(< ~counter~0 97)} is VALID [2022-04-28 05:09:24,588 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2907#(< ~counter~0 97)} {2722#true} #89#return; {2907#(< ~counter~0 97)} is VALID [2022-04-28 05:09:24,589 INFO L290 TraceCheckUtils]: 2: Hoare triple {2907#(< ~counter~0 97)} assume true; {2907#(< ~counter~0 97)} is VALID [2022-04-28 05:09:24,589 INFO L290 TraceCheckUtils]: 1: Hoare triple {2722#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; {2907#(< ~counter~0 97)} is VALID [2022-04-28 05:09:24,590 INFO L272 TraceCheckUtils]: 0: Hoare triple {2722#true} call ULTIMATE.init(); {2722#true} is VALID [2022-04-28 05:09:24,590 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 05:09:24,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 05:09:24,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046279186] [2022-04-28 05:09:24,590 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 05:09:24,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678905706] [2022-04-28 05:09:24,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678905706] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-28 05:09:24,590 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-28 05:09:24,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-04-28 05:09:24,591 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 05:09:24,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1122451607] [2022-04-28 05:09:24,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1122451607] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 05:09:24,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 05:09:24,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-28 05:09:24,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430830253] [2022-04-28 05:09:24,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 05:09:24,592 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 [2022-04-28 05:09:24,592 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 05:09:24,592 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) [2022-04-28 05:09:24,624 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:09:24,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-28 05:09:24,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 05:09:24,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-28 05:09:24,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-04-28 05:09:24,625 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) [2022-04-28 05:09:24,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:09:24,874 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2022-04-28 05:09:24,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-28 05:09:24,874 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 [2022-04-28 05:09:24,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 05:09:24,875 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) [2022-04-28 05:09:24,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 66 transitions. [2022-04-28 05:09:24,877 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) [2022-04-28 05:09:24,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 66 transitions. [2022-04-28 05:09:24,879 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 8 states and 66 transitions. [2022-04-28 05:09:24,943 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 66 edges. 66 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:09:24,945 INFO L225 Difference]: With dead ends: 67 [2022-04-28 05:09:24,945 INFO L226 Difference]: Without dead ends: 60 [2022-04-28 05:09:24,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2022-04-28 05:09:24,946 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 30 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 05:09:24,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 96 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 05:09:24,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-04-28 05:09:24,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2022-04-28 05:09:24,998 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 05:09:24,999 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) [2022-04-28 05:09:24,999 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) [2022-04-28 05:09:24,999 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) [2022-04-28 05:09:25,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:09:25,002 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2022-04-28 05:09:25,002 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2022-04-28 05:09:25,002 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:09:25,002 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:09:25,002 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. [2022-04-28 05:09:25,003 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. [2022-04-28 05:09:25,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:09:25,005 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2022-04-28 05:09:25,005 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2022-04-28 05:09:25,005 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:09:25,005 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:09:25,005 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 05:09:25,005 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 05:09:25,006 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) [2022-04-28 05:09:25,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2022-04-28 05:09:25,008 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 38 [2022-04-28 05:09:25,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 05:09:25,008 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2022-04-28 05:09:25,009 INFO L496 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) [2022-04-28 05:09:25,009 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 54 states and 63 transitions. [2022-04-28 05:09:25,089 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 63 edges. 63 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:09:25,089 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2022-04-28 05:09:25,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-28 05:09:25,090 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 05:09:25,090 INFO L195 NwaCegarLoop]: 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] [2022-04-28 05:09:25,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-28 05:09:25,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 05:09:25,291 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 05:09:25,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 05:09:25,291 INFO L85 PathProgramCache]: Analyzing trace with hash 817777954, now seen corresponding path program 1 times [2022-04-28 05:09:25,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 05:09:25,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [421641953] [2022-04-28 05:09:25,292 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 05:09:25,292 INFO L85 PathProgramCache]: Analyzing trace with hash 817777954, now seen corresponding path program 2 times [2022-04-28 05:09:25,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 05:09:25,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722176207] [2022-04-28 05:09:25,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 05:09:25,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 05:09:25,308 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 05:09:25,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [821167033] [2022-04-28 05:09:25,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 05:09:25,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 05:09:25,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 05:09:25,310 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) [2022-04-28 05:09:25,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process