/usr/bin/java -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/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-18 02:39:43,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 02:39:43,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 02:39:43,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-18 02:39:43,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 02:39:43,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 02:39:43,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 02:39:43,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 02:39:43,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 02:39:43,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 02:39:43,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 02:39:43,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 02:39:43,670 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 02:39:43,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 02:39:43,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 02:39:43,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 02:39:43,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 02:39:43,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-18 02:39:43,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 02:39:43,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 02:39:43,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 02:39:43,689 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-18 02:39:43,695 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 02:39:43,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 02:39:43,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 02:39:43,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 02:39:43,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 02:39:43,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 02:39:43,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 02:39:43,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 02:39:43,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 02:39:43,697 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 02:39:43,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 02:39:43,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 02:39:43,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 02:39:43,697 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 02:39:43,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 02:39:43,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 02:39:43,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 02:39:43,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-18 02:39:43,698 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-18 02:39:43,698 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-18 02:39:43,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 02:39:43,698 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-18 02:39:43,698 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 02:39:43,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 02:39:43,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 02:39:43,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 02:39:43,887 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 02:39:43,888 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 02:39:43,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound100.c [2022-03-18 02:39:43,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e1012fae/844a4f6a176047f5a19e7650bac62160/FLAG06316c765 [2022-03-18 02:39:44,311 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 02:39:44,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound100.c [2022-03-18 02:39:44,317 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e1012fae/844a4f6a176047f5a19e7650bac62160/FLAG06316c765 [2022-03-18 02:39:44,328 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e1012fae/844a4f6a176047f5a19e7650bac62160 [2022-03-18 02:39:44,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 02:39:44,330 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 02:39:44,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 02:39:44,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 02:39:44,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 02:39:44,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 02:39:44" (1/1) ... [2022-03-18 02:39:44,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@158fe871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:39:44, skipping insertion in model container [2022-03-18 02:39:44,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 02:39:44" (1/1) ... [2022-03-18 02:39:44,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 02:39:44,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 02:39:44,455 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/egcd2-ll_valuebound100.c[490,503] [2022-03-18 02:39:44,494 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 02:39:44,499 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 02:39:44,506 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/egcd2-ll_valuebound100.c[490,503] [2022-03-18 02:39:44,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 02:39:44,520 INFO L208 MainTranslator]: Completed translation [2022-03-18 02:39:44,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:39:44 WrapperNode [2022-03-18 02:39:44,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 02:39:44,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 02:39:44,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 02:39:44,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 02:39:44,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:39:44" (1/1) ... [2022-03-18 02:39:44,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:39:44" (1/1) ... [2022-03-18 02:39:44,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:39:44" (1/1) ... [2022-03-18 02:39:44,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:39:44" (1/1) ... [2022-03-18 02:39:44,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:39:44" (1/1) ... [2022-03-18 02:39:44,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:39:44" (1/1) ... [2022-03-18 02:39:44,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:39:44" (1/1) ... [2022-03-18 02:39:44,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 02:39:44,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 02:39:44,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 02:39:44,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 02:39:44,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:39:44" (1/1) ... [2022-03-18 02:39:44,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 02:39:44,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:39:44,600 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) [2022-03-18 02:39:44,623 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 [2022-03-18 02:39:44,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 02:39:44,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 02:39:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 02:39:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 02:39:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 02:39:44,641 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 02:39:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 02:39:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 02:39:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 02:39:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 02:39:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 02:39:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 02:39:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 02:39:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 02:39:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 02:39:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 02:39:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 02:39:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 02:39:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 02:39:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 02:39:44,693 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 02:39:44,694 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 02:39:44,794 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 02:39:44,799 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 02:39:44,799 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-18 02:39:44,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 02:39:44 BoogieIcfgContainer [2022-03-18 02:39:44,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 02:39:44,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 02:39:44,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 02:39:44,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 02:39:44,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 02:39:44" (1/3) ... [2022-03-18 02:39:44,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d8fd19a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 02:39:44, skipping insertion in model container [2022-03-18 02:39:44,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:39:44" (2/3) ... [2022-03-18 02:39:44,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d8fd19a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 02:39:44, skipping insertion in model container [2022-03-18 02:39:44,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 02:39:44" (3/3) ... [2022-03-18 02:39:44,825 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound100.c [2022-03-18 02:39:44,829 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-18 02:39:44,829 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 02:39:44,862 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 02:39:44,873 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-18 02:39:44,873 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 02:39:44,893 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-18 02:39:44,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-18 02:39:44,899 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:39:44,900 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2022-03-18 02:39:44,901 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:39:44,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:39:44,905 INFO L85 PathProgramCache]: Analyzing trace with hash -587582002, now seen corresponding path program 1 times [2022-03-18 02:39:44,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:44,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1381653095] [2022-03-18 02:39:44,918 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:39:44,918 INFO L85 PathProgramCache]: Analyzing trace with hash -587582002, now seen corresponding path program 2 times [2022-03-18 02:39:44,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:39:44,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814116354] [2022-03-18 02:39:44,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:39:44,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:39:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 02:39:45,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 02:39:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 02:39:45,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 02:39:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 02:39:45,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 02:39:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 02:39:45,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 02:39:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 02:39:45,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 02:39:45,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 02:39:45,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-18 02:39:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 02:39:45,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-18 02:39:45,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 02:39:45,095 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-03-18 02:39:45,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:39:45,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814116354] [2022-03-18 02:39:45,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814116354] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:45,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:45,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 02:39:45,099 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:39:45,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1381653095] [2022-03-18 02:39:45,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1381653095] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:45,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:45,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 02:39:45,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321095675] [2022-03-18 02:39:45,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:39:45,102 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 02:39:45,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:45,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 02:39:45,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 02:39:45,135 INFO L87 Difference]: Start difference. First operand has 40 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) 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, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 02:39:45,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:39:45,231 INFO L93 Difference]: Finished difference Result 73 states and 118 transitions. [2022-03-18 02:39:45,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 02:39:45,233 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, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2022-03-18 02:39:45,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:39:45,238 INFO L225 Difference]: With dead ends: 73 [2022-03-18 02:39:45,238 INFO L226 Difference]: Without dead ends: 35 [2022-03-18 02:39:45,240 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 02:39:45,243 INFO L912 BasicCegarLoop]: 39 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 02:39:45,243 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 42 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 02:39:45,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-03-18 02:39:45,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-03-18 02:39:45,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-03-18 02:39:45,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2022-03-18 02:39:45,270 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 43 [2022-03-18 02:39:45,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:39:45,270 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2022-03-18 02:39:45,271 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 02:39:45,271 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2022-03-18 02:39:45,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-03-18 02:39:45,273 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:39:45,274 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 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, 1] [2022-03-18 02:39:45,274 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 02:39:45,274 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:39:45,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:39:45,276 INFO L85 PathProgramCache]: Analyzing trace with hash 987777007, now seen corresponding path program 1 times [2022-03-18 02:39:45,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:45,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1502208709] [2022-03-18 02:39:45,280 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:39:45,280 INFO L85 PathProgramCache]: Analyzing trace with hash 987777007, now seen corresponding path program 2 times [2022-03-18 02:39:45,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:39:45,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706703] [2022-03-18 02:39:45,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:39:45,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:39:45,308 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:39:45,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1497365981] [2022-03-18 02:39:45,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:39:45,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:45,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:39:45,311 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) [2022-03-18 02:39:45,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 02:39:45,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:39:45,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:39:45,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-18 02:39:45,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:39:45,517 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-03-18 02:39:45,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:39:45,649 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-03-18 02:39:45,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:39:45,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706703] [2022-03-18 02:39:45,650 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:39:45,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497365981] [2022-03-18 02:39:45,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497365981] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:39:45,650 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:39:45,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-03-18 02:39:45,651 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:39:45,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1502208709] [2022-03-18 02:39:45,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1502208709] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:45,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:45,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 02:39:45,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028918893] [2022-03-18 02:39:45,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:39:45,652 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 02:39:45,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:45,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 02:39:45,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-18 02:39:45,653 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 02:39:45,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:39:45,733 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2022-03-18 02:39:45,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 02:39:45,733 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 44 [2022-03-18 02:39:45,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:39:45,734 INFO L225 Difference]: With dead ends: 52 [2022-03-18 02:39:45,734 INFO L226 Difference]: Without dead ends: 44 [2022-03-18 02:39:45,735 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-03-18 02:39:45,736 INFO L912 BasicCegarLoop]: 38 mSDtfsCounter, 19 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 02:39:45,736 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 154 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 02:39:45,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-03-18 02:39:45,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-03-18 02:39:45,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-03-18 02:39:45,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2022-03-18 02:39:45,760 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 44 [2022-03-18 02:39:45,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:39:45,760 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2022-03-18 02:39:45,760 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 02:39:45,760 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2022-03-18 02:39:45,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-18 02:39:45,761 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:39:45,761 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1] [2022-03-18 02:39:45,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-18 02:39:45,975 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:45,976 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:39:45,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:39:45,976 INFO L85 PathProgramCache]: Analyzing trace with hash 561616070, now seen corresponding path program 1 times [2022-03-18 02:39:45,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:45,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1059003823] [2022-03-18 02:39:45,977 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:39:45,977 INFO L85 PathProgramCache]: Analyzing trace with hash 561616070, now seen corresponding path program 2 times [2022-03-18 02:39:45,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:39:45,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274430571] [2022-03-18 02:39:45,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:39:45,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:39:45,988 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:39:45,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [851416999] [2022-03-18 02:39:45,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:39:45,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:45,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:39:46,001 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) [2022-03-18 02:39:46,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 02:39:46,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 02:39:46,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:39:46,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-18 02:39:46,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:39:46,127 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-03-18 02:39:46,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 02:39:46,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:39:46,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274430571] [2022-03-18 02:39:46,127 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:39:46,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851416999] [2022-03-18 02:39:46,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851416999] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:46,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:46,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 02:39:46,128 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:39:46,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1059003823] [2022-03-18 02:39:46,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1059003823] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:46,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:46,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 02:39:46,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046048634] [2022-03-18 02:39:46,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:39:46,128 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 02:39:46,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:46,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 02:39:46,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-18 02:39:46,129 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 02:39:46,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:39:46,163 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2022-03-18 02:39:46,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 02:39:46,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 45 [2022-03-18 02:39:46,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:39:46,166 INFO L225 Difference]: With dead ends: 50 [2022-03-18 02:39:46,166 INFO L226 Difference]: Without dead ends: 48 [2022-03-18 02:39:46,166 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-18 02:39:46,167 INFO L912 BasicCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 02:39:46,168 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 163 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 02:39:46,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-03-18 02:39:46,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2022-03-18 02:39:46,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 25 states have internal predecessors, (26), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-03-18 02:39:46,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2022-03-18 02:39:46,175 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 45 [2022-03-18 02:39:46,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:39:46,175 INFO L478 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2022-03-18 02:39:46,175 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 02:39:46,175 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2022-03-18 02:39:46,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-18 02:39:46,176 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:39:46,176 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1] [2022-03-18 02:39:46,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-18 02:39:46,385 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-18 02:39:46,385 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:39:46,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:39:46,385 INFO L85 PathProgramCache]: Analyzing trace with hash -680064098, now seen corresponding path program 1 times [2022-03-18 02:39:46,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:46,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1049863580] [2022-03-18 02:39:46,386 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:39:46,386 INFO L85 PathProgramCache]: Analyzing trace with hash -680064098, now seen corresponding path program 2 times [2022-03-18 02:39:46,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:39:46,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878317585] [2022-03-18 02:39:46,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:39:46,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:39:46,396 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:39:46,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1402851615] [2022-03-18 02:39:46,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:39:46,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:46,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:39:46,399 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) [2022-03-18 02:39:46,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-18 02:39:46,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:39:46,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:39:46,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-18 02:39:46,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:39:46,559 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-03-18 02:39:46,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 02:39:46,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:39:46,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878317585] [2022-03-18 02:39:46,560 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:39:46,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402851615] [2022-03-18 02:39:46,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402851615] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:46,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:46,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 02:39:46,560 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:39:46,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1049863580] [2022-03-18 02:39:46,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1049863580] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:46,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:46,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 02:39:46,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780528765] [2022-03-18 02:39:46,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:39:46,561 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 02:39:46,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:46,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 02:39:46,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-18 02:39:46,561 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 02:39:46,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:39:46,588 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2022-03-18 02:39:46,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 02:39:46,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2022-03-18 02:39:46,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:39:46,590 INFO L225 Difference]: With dead ends: 58 [2022-03-18 02:39:46,590 INFO L226 Difference]: Without dead ends: 56 [2022-03-18 02:39:46,590 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-18 02:39:46,591 INFO L912 BasicCegarLoop]: 48 mSDtfsCounter, 7 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 02:39:46,591 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 173 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 02:39:46,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-03-18 02:39:46,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2022-03-18 02:39:46,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 32 states have internal predecessors, (33), 20 states have call successors, (20), 6 states have call predecessors, (20), 5 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2022-03-18 02:39:46,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 71 transitions. [2022-03-18 02:39:46,599 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 71 transitions. Word has length 50 [2022-03-18 02:39:46,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:39:46,600 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 71 transitions. [2022-03-18 02:39:46,600 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 02:39:46,600 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 71 transitions. [2022-03-18 02:39:46,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-18 02:39:46,600 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:39:46,600 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 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, 1, 1, 1, 1, 1] [2022-03-18 02:39:46,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-18 02:39:46,809 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:46,810 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:39:46,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:39:46,810 INFO L85 PathProgramCache]: Analyzing trace with hash 606548870, now seen corresponding path program 1 times [2022-03-18 02:39:46,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:46,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1553591381] [2022-03-18 02:39:46,811 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:39:46,811 INFO L85 PathProgramCache]: Analyzing trace with hash 606548870, now seen corresponding path program 2 times [2022-03-18 02:39:46,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:39:46,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330565677] [2022-03-18 02:39:46,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:39:46,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:39:46,820 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:39:46,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [658920941] [2022-03-18 02:39:46,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:39:46,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:46,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:39:46,822 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) [2022-03-18 02:39:46,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-18 02:39:46,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:39:46,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:39:46,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-18 02:39:46,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:39:46,998 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-03-18 02:39:46,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 02:39:46,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:39:46,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330565677] [2022-03-18 02:39:46,999 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:39:46,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658920941] [2022-03-18 02:39:46,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658920941] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:46,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:46,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 02:39:46,999 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:39:46,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1553591381] [2022-03-18 02:39:46,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1553591381] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:46,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:46,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 02:39:46,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076552302] [2022-03-18 02:39:46,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:39:47,000 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 02:39:47,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:47,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 02:39:47,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-18 02:39:47,000 INFO L87 Difference]: Start difference. First operand 55 states and 71 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-18 02:39:47,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:39:47,033 INFO L93 Difference]: Finished difference Result 62 states and 77 transitions. [2022-03-18 02:39:47,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 02:39:47,033 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 55 [2022-03-18 02:39:47,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:39:47,034 INFO L225 Difference]: With dead ends: 62 [2022-03-18 02:39:47,034 INFO L226 Difference]: Without dead ends: 60 [2022-03-18 02:39:47,034 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-18 02:39:47,035 INFO L912 BasicCegarLoop]: 46 mSDtfsCounter, 7 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 02:39:47,035 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 163 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 02:39:47,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-03-18 02:39:47,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2022-03-18 02:39:47,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 32 states have (on average 1.125) internal successors, (36), 35 states have internal predecessors, (36), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2022-03-18 02:39:47,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 74 transitions. [2022-03-18 02:39:47,043 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 74 transitions. Word has length 55 [2022-03-18 02:39:47,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:39:47,043 INFO L478 AbstractCegarLoop]: Abstraction has 59 states and 74 transitions. [2022-03-18 02:39:47,043 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-18 02:39:47,044 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 74 transitions. [2022-03-18 02:39:47,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-18 02:39:47,044 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:39:47,044 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:39:47,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-18 02:39:47,263 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:47,263 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:39:47,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:39:47,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1584976990, now seen corresponding path program 1 times [2022-03-18 02:39:47,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:47,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [862008534] [2022-03-18 02:39:47,264 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:39:47,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1584976990, now seen corresponding path program 2 times [2022-03-18 02:39:47,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:39:47,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431346698] [2022-03-18 02:39:47,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:39:47,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:39:47,277 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:39:47,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [277274817] [2022-03-18 02:39:47,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:39:47,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:47,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:39:47,279 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) [2022-03-18 02:39:47,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-18 02:39:47,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:39:47,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:39:47,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-18 02:39:47,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:39:47,521 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-03-18 02:39:47,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:39:47,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:39:47,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431346698] [2022-03-18 02:39:47,615 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:39:47,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277274817] [2022-03-18 02:39:47,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277274817] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 02:39:47,615 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-18 02:39:47,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-03-18 02:39:47,615 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:39:47,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [862008534] [2022-03-18 02:39:47,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [862008534] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:47,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:47,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 02:39:47,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196245634] [2022-03-18 02:39:47,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:39:47,617 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 02:39:47,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:47,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 02:39:47,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-18 02:39:47,617 INFO L87 Difference]: Start difference. First operand 59 states and 74 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-03-18 02:39:47,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:39:47,702 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2022-03-18 02:39:47,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 02:39:47,702 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 60 [2022-03-18 02:39:47,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:39:47,706 INFO L225 Difference]: With dead ends: 66 [2022-03-18 02:39:47,706 INFO L226 Difference]: Without dead ends: 64 [2022-03-18 02:39:47,706 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-18 02:39:47,708 INFO L912 BasicCegarLoop]: 36 mSDtfsCounter, 11 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 02:39:47,709 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 181 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 02:39:47,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-03-18 02:39:47,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2022-03-18 02:39:47,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 38 states have internal predecessors, (39), 20 states have call successors, (20), 8 states have call predecessors, (20), 7 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2022-03-18 02:39:47,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 77 transitions. [2022-03-18 02:39:47,727 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 77 transitions. Word has length 60 [2022-03-18 02:39:47,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:39:47,728 INFO L478 AbstractCegarLoop]: Abstraction has 63 states and 77 transitions. [2022-03-18 02:39:47,728 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-03-18 02:39:47,728 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 77 transitions. [2022-03-18 02:39:47,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-18 02:39:47,729 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:39:47,729 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:39:47,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-18 02:39:47,945 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:47,945 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:39:47,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:39:47,946 INFO L85 PathProgramCache]: Analyzing trace with hash -669670075, now seen corresponding path program 1 times [2022-03-18 02:39:47,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:47,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [763052481] [2022-03-18 02:39:47,946 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:39:47,946 INFO L85 PathProgramCache]: Analyzing trace with hash -669670075, now seen corresponding path program 2 times [2022-03-18 02:39:47,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:39:47,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706817198] [2022-03-18 02:39:47,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:39:47,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:39:47,955 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:39:47,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1937380304] [2022-03-18 02:39:47,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:39:47,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:47,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:39:47,957 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) [2022-03-18 02:39:47,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-18 02:39:47,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:39:47,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:39:47,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-18 02:39:47,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:39:48,110 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-03-18 02:39:48,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:39:48,207 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-03-18 02:39:48,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:39:48,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706817198] [2022-03-18 02:39:48,207 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:39:48,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937380304] [2022-03-18 02:39:48,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937380304] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-18 02:39:48,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 02:39:48,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-03-18 02:39:48,208 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:39:48,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [763052481] [2022-03-18 02:39:48,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [763052481] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:48,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:48,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 02:39:48,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082840817] [2022-03-18 02:39:48,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:39:48,208 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 02:39:48,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:48,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 02:39:48,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-18 02:39:48,209 INFO L87 Difference]: Start difference. First operand 63 states and 77 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-18 02:39:48,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:39:48,246 INFO L93 Difference]: Finished difference Result 69 states and 82 transitions. [2022-03-18 02:39:48,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 02:39:48,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 67 [2022-03-18 02:39:48,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:39:48,247 INFO L225 Difference]: With dead ends: 69 [2022-03-18 02:39:48,247 INFO L226 Difference]: Without dead ends: 67 [2022-03-18 02:39:48,247 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-18 02:39:48,248 INFO L912 BasicCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 02:39:48,248 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 146 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 02:39:48,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-03-18 02:39:48,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 59. [2022-03-18 02:39:48,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 33 states have (on average 1.121212121212121) internal successors, (37), 34 states have internal predecessors, (37), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-03-18 02:39:48,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2022-03-18 02:39:48,257 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 67 [2022-03-18 02:39:48,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:39:48,258 INFO L478 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2022-03-18 02:39:48,258 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-18 02:39:48,258 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2022-03-18 02:39:48,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-18 02:39:48,260 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:39:48,260 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:39:48,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-18 02:39:48,473 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:48,474 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:39:48,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:39:48,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1682830289, now seen corresponding path program 1 times [2022-03-18 02:39:48,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:48,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1159529947] [2022-03-18 02:39:48,475 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:39:48,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1682830289, now seen corresponding path program 2 times [2022-03-18 02:39:48,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:39:48,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931379633] [2022-03-18 02:39:48,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:39:48,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:39:48,486 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:39:48,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1410126691] [2022-03-18 02:39:48,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:39:48,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:48,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:39:48,488 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) [2022-03-18 02:39:48,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-18 02:39:48,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:39:48,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:39:48,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-18 02:39:48,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:39:48,655 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-03-18 02:39:48,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:39:48,767 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-03-18 02:39:48,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:39:48,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931379633] [2022-03-18 02:39:48,768 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:39:48,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410126691] [2022-03-18 02:39:48,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410126691] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:39:48,768 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:39:48,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-03-18 02:39:48,768 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:39:48,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1159529947] [2022-03-18 02:39:48,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1159529947] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:48,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:48,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 02:39:48,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129678089] [2022-03-18 02:39:48,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:39:48,769 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 02:39:48,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:48,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 02:39:48,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-03-18 02:39:48,770 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-03-18 02:39:48,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:39:48,890 INFO L93 Difference]: Finished difference Result 106 states and 146 transitions. [2022-03-18 02:39:48,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 02:39:48,890 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 69 [2022-03-18 02:39:48,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:39:48,893 INFO L225 Difference]: With dead ends: 106 [2022-03-18 02:39:48,893 INFO L226 Difference]: Without dead ends: 98 [2022-03-18 02:39:48,893 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-03-18 02:39:48,894 INFO L912 BasicCegarLoop]: 60 mSDtfsCounter, 30 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 02:39:48,894 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 333 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 02:39:48,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-03-18 02:39:48,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 89. [2022-03-18 02:39:48,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 34 states have call successors, (34), 8 states have call predecessors, (34), 7 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-03-18 02:39:48,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 122 transitions. [2022-03-18 02:39:48,913 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 122 transitions. Word has length 69 [2022-03-18 02:39:48,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:39:48,914 INFO L478 AbstractCegarLoop]: Abstraction has 89 states and 122 transitions. [2022-03-18 02:39:48,914 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-03-18 02:39:48,914 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 122 transitions. [2022-03-18 02:39:48,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-18 02:39:48,915 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:39:48,915 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 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, 1, 1, 1, 1] [2022-03-18 02:39:48,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-18 02:39:49,131 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:49,132 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:39:49,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:39:49,132 INFO L85 PathProgramCache]: Analyzing trace with hash 376741854, now seen corresponding path program 1 times [2022-03-18 02:39:49,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:49,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1097318509] [2022-03-18 02:39:49,132 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:39:49,133 INFO L85 PathProgramCache]: Analyzing trace with hash 376741854, now seen corresponding path program 2 times [2022-03-18 02:39:49,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:39:49,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773267633] [2022-03-18 02:39:49,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:39:49,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:39:49,140 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:39:49,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1505190766] [2022-03-18 02:39:49,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:39:49,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:49,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:39:49,142 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) [2022-03-18 02:39:49,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-18 02:39:49,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:39:49,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:39:49,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-18 02:39:49,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:39:49,334 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-03-18 02:39:49,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:39:49,473 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-03-18 02:39:49,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:39:49,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773267633] [2022-03-18 02:39:49,474 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:39:49,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505190766] [2022-03-18 02:39:49,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505190766] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:39:49,474 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:39:49,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 13 [2022-03-18 02:39:49,476 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:39:49,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1097318509] [2022-03-18 02:39:49,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1097318509] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:49,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:49,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 02:39:49,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696962140] [2022-03-18 02:39:49,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:39:49,477 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 02:39:49,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:49,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 02:39:49,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-18 02:39:49,478 INFO L87 Difference]: Start difference. First operand 89 states and 122 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-03-18 02:39:49,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:39:49,613 INFO L93 Difference]: Finished difference Result 124 states and 173 transitions. [2022-03-18 02:39:49,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 02:39:49,614 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 75 [2022-03-18 02:39:49,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:39:49,614 INFO L225 Difference]: With dead ends: 124 [2022-03-18 02:39:49,614 INFO L226 Difference]: Without dead ends: 121 [2022-03-18 02:39:49,615 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-03-18 02:39:49,615 INFO L912 BasicCegarLoop]: 44 mSDtfsCounter, 21 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 02:39:49,615 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 290 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 02:39:49,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-03-18 02:39:49,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 118. [2022-03-18 02:39:49,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 62 states have (on average 1.2096774193548387) internal successors, (75), 64 states have internal predecessors, (75), 47 states have call successors, (47), 9 states have call predecessors, (47), 8 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-03-18 02:39:49,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 166 transitions. [2022-03-18 02:39:49,630 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 166 transitions. Word has length 75 [2022-03-18 02:39:49,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:39:49,630 INFO L478 AbstractCegarLoop]: Abstraction has 118 states and 166 transitions. [2022-03-18 02:39:49,630 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-03-18 02:39:49,630 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 166 transitions. [2022-03-18 02:39:49,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-18 02:39:49,631 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:39:49,631 INFO L500 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:39:49,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-18 02:39:49,847 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-03-18 02:39:49,848 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:39:49,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:39:49,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1245952186, now seen corresponding path program 3 times [2022-03-18 02:39:49,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:49,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1690347418] [2022-03-18 02:39:49,848 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:39:49,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1245952186, now seen corresponding path program 4 times [2022-03-18 02:39:49,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:39:49,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57811157] [2022-03-18 02:39:49,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:39:49,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:39:49,856 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:39:49,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2110096734] [2022-03-18 02:39:49,856 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 02:39:49,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:49,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:39:49,858 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:39:49,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-18 02:39:49,894 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 02:39:49,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:39:49,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-18 02:39:49,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:39:50,276 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-03-18 02:39:50,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:39:50,504 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-03-18 02:39:50,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:39:50,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57811157] [2022-03-18 02:39:50,504 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:39:50,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110096734] [2022-03-18 02:39:50,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110096734] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:39:50,504 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:39:50,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2022-03-18 02:39:50,505 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:39:50,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1690347418] [2022-03-18 02:39:50,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1690347418] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:50,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:50,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 02:39:50,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40399807] [2022-03-18 02:39:50,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:39:50,505 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 02:39:50,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:50,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 02:39:50,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-03-18 02:39:50,506 INFO L87 Difference]: Start difference. First operand 118 states and 166 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-03-18 02:39:50,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:39:50,719 INFO L93 Difference]: Finished difference Result 130 states and 176 transitions. [2022-03-18 02:39:50,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 02:39:50,720 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 80 [2022-03-18 02:39:50,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:39:50,721 INFO L225 Difference]: With dead ends: 130 [2022-03-18 02:39:50,721 INFO L226 Difference]: Without dead ends: 128 [2022-03-18 02:39:50,722 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-03-18 02:39:50,722 INFO L912 BasicCegarLoop]: 46 mSDtfsCounter, 30 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 02:39:50,722 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 296 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 02:39:50,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-03-18 02:39:50,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2022-03-18 02:39:50,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 68 states have (on average 1.1911764705882353) internal successors, (81), 70 states have internal predecessors, (81), 47 states have call successors, (47), 11 states have call predecessors, (47), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-03-18 02:39:50,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 172 transitions. [2022-03-18 02:39:50,742 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 172 transitions. Word has length 80 [2022-03-18 02:39:50,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:39:50,742 INFO L478 AbstractCegarLoop]: Abstraction has 126 states and 172 transitions. [2022-03-18 02:39:50,742 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-03-18 02:39:50,742 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 172 transitions. [2022-03-18 02:39:50,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-18 02:39:50,743 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:39:50,743 INFO L500 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:39:50,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-18 02:39:50,964 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-03-18 02:39:50,964 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:39:50,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:39:50,964 INFO L85 PathProgramCache]: Analyzing trace with hash 901388446, now seen corresponding path program 5 times [2022-03-18 02:39:50,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:50,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [771906050] [2022-03-18 02:39:50,965 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:39:50,965 INFO L85 PathProgramCache]: Analyzing trace with hash 901388446, now seen corresponding path program 6 times [2022-03-18 02:39:50,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:39:50,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044690513] [2022-03-18 02:39:50,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:39:50,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:39:50,972 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:39:50,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1113104913] [2022-03-18 02:39:50,973 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 02:39:50,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:50,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:39:50,974 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:39:50,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-18 02:39:51,062 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-18 02:39:51,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:39:51,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 45 conjunts are in the unsatisfiable core [2022-03-18 02:39:51,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:39:51,506 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 30 proven. 21 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-03-18 02:39:51,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:39:51,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:39:51,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044690513] [2022-03-18 02:39:51,639 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:39:51,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113104913] [2022-03-18 02:39:51,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113104913] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 02:39:51,639 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-18 02:39:51,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-03-18 02:39:51,640 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:39:51,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [771906050] [2022-03-18 02:39:51,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [771906050] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:51,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:51,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 02:39:51,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111867907] [2022-03-18 02:39:51,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:39:51,640 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 02:39:51,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:51,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 02:39:51,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-18 02:39:51,641 INFO L87 Difference]: Start difference. First operand 126 states and 172 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-03-18 02:39:51,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:39:51,955 INFO L93 Difference]: Finished difference Result 134 states and 179 transitions. [2022-03-18 02:39:51,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 02:39:51,956 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 85 [2022-03-18 02:39:51,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:39:51,957 INFO L225 Difference]: With dead ends: 134 [2022-03-18 02:39:51,957 INFO L226 Difference]: Without dead ends: 132 [2022-03-18 02:39:51,957 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-03-18 02:39:51,957 INFO L912 BasicCegarLoop]: 40 mSDtfsCounter, 24 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 02:39:51,958 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 299 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 02:39:51,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-03-18 02:39:51,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2022-03-18 02:39:51,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 73 states have internal predecessors, (84), 47 states have call successors, (47), 12 states have call predecessors, (47), 11 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-03-18 02:39:51,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 175 transitions. [2022-03-18 02:39:51,971 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 175 transitions. Word has length 85 [2022-03-18 02:39:51,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:39:51,972 INFO L478 AbstractCegarLoop]: Abstraction has 130 states and 175 transitions. [2022-03-18 02:39:51,972 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-03-18 02:39:51,972 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 175 transitions. [2022-03-18 02:39:51,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-03-18 02:39:51,972 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:39:51,972 INFO L500 BasicCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:39:51,991 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-03-18 02:39:52,188 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-03-18 02:39:52,189 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:39:52,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:39:52,189 INFO L85 PathProgramCache]: Analyzing trace with hash -686534738, now seen corresponding path program 1 times [2022-03-18 02:39:52,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:52,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [296825469] [2022-03-18 02:39:52,190 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:39:52,190 INFO L85 PathProgramCache]: Analyzing trace with hash -686534738, now seen corresponding path program 2 times [2022-03-18 02:39:52,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:39:52,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930142486] [2022-03-18 02:39:52,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:39:52,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:39:52,197 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:39:52,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [92674079] [2022-03-18 02:39:52,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:39:52,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:52,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:39:52,199 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:39:52,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-18 02:39:52,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:39:52,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:39:52,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 39 conjunts are in the unsatisfiable core [2022-03-18 02:39:52,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:39:52,660 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-03-18 02:39:52,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:39:52,987 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-03-18 02:39:52,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:39:52,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930142486] [2022-03-18 02:39:52,987 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:39:52,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92674079] [2022-03-18 02:39:52,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92674079] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:39:52,988 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:39:52,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-03-18 02:39:52,988 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:39:52,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [296825469] [2022-03-18 02:39:52,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [296825469] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:52,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:52,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 02:39:52,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284147332] [2022-03-18 02:39:52,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:39:52,988 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 02:39:52,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:52,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 02:39:52,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-03-18 02:39:52,989 INFO L87 Difference]: Start difference. First operand 130 states and 175 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 5 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-03-18 02:39:53,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:39:53,189 INFO L93 Difference]: Finished difference Result 157 states and 211 transitions. [2022-03-18 02:39:53,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 02:39:53,192 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 5 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 91 [2022-03-18 02:39:53,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:39:53,193 INFO L225 Difference]: With dead ends: 157 [2022-03-18 02:39:53,193 INFO L226 Difference]: Without dead ends: 154 [2022-03-18 02:39:53,193 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-03-18 02:39:53,193 INFO L912 BasicCegarLoop]: 57 mSDtfsCounter, 19 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 02:39:53,194 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 378 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 02:39:53,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-03-18 02:39:53,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2022-03-18 02:39:53,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 84 states have (on average 1.1785714285714286) internal successors, (99), 86 states have internal predecessors, (99), 55 states have call successors, (55), 14 states have call predecessors, (55), 13 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-03-18 02:39:53,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 206 transitions. [2022-03-18 02:39:53,211 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 206 transitions. Word has length 91 [2022-03-18 02:39:53,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:39:53,212 INFO L478 AbstractCegarLoop]: Abstraction has 153 states and 206 transitions. [2022-03-18 02:39:53,212 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 5 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-03-18 02:39:53,212 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 206 transitions. [2022-03-18 02:39:53,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-03-18 02:39:53,213 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:39:53,213 INFO L500 BasicCegarLoop]: trace histogram [10, 9, 9, 6, 6, 6, 3, 3, 3, 3, 3, 3, 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] [2022-03-18 02:39:53,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-18 02:39:53,424 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-03-18 02:39:53,424 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:39:53,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:39:53,425 INFO L85 PathProgramCache]: Analyzing trace with hash -663071842, now seen corresponding path program 7 times [2022-03-18 02:39:53,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:53,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1140339047] [2022-03-18 02:39:53,425 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:39:53,425 INFO L85 PathProgramCache]: Analyzing trace with hash -663071842, now seen corresponding path program 8 times [2022-03-18 02:39:53,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:39:53,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372648807] [2022-03-18 02:39:53,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:39:53,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:39:53,440 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:39:53,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1566887137] [2022-03-18 02:39:53,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:39:53,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:53,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:39:53,447 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:39:53,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-18 02:39:53,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:39:53,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:39:53,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-18 02:39:53,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:39:53,598 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-03-18 02:39:53,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 02:39:53,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:39:53,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372648807] [2022-03-18 02:39:53,598 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:39:53,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566887137] [2022-03-18 02:39:53,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566887137] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:53,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:53,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 02:39:53,599 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:39:53,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1140339047] [2022-03-18 02:39:53,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1140339047] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:39:53,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:39:53,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 02:39:53,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272873883] [2022-03-18 02:39:53,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:39:53,599 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 02:39:53,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:53,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 02:39:53,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-18 02:39:53,600 INFO L87 Difference]: Start difference. First operand 153 states and 206 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-03-18 02:39:53,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:39:53,649 INFO L93 Difference]: Finished difference Result 201 states and 280 transitions. [2022-03-18 02:39:53,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 02:39:53,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 100 [2022-03-18 02:39:53,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:39:53,650 INFO L225 Difference]: With dead ends: 201 [2022-03-18 02:39:53,650 INFO L226 Difference]: Without dead ends: 156 [2022-03-18 02:39:53,651 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-18 02:39:53,651 INFO L912 BasicCegarLoop]: 58 mSDtfsCounter, 6 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 02:39:53,651 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 188 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 02:39:53,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-03-18 02:39:53,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 147. [2022-03-18 02:39:53,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 78 states have (on average 1.1282051282051282) internal successors, (88), 80 states have internal predecessors, (88), 55 states have call successors, (55), 14 states have call predecessors, (55), 13 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-03-18 02:39:53,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 195 transitions. [2022-03-18 02:39:53,668 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 195 transitions. Word has length 100 [2022-03-18 02:39:53,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:39:53,670 INFO L478 AbstractCegarLoop]: Abstraction has 147 states and 195 transitions. [2022-03-18 02:39:53,670 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-03-18 02:39:53,670 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 195 transitions. [2022-03-18 02:39:53,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-03-18 02:39:53,671 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:39:53,671 INFO L500 BasicCegarLoop]: trace histogram [12, 11, 11, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:39:53,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-18 02:39:53,883 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-18 02:39:53,884 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:39:53,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:39:53,884 INFO L85 PathProgramCache]: Analyzing trace with hash -428114403, now seen corresponding path program 1 times [2022-03-18 02:39:53,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:39:53,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [574166022] [2022-03-18 02:39:53,885 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:39:53,885 INFO L85 PathProgramCache]: Analyzing trace with hash -428114403, now seen corresponding path program 2 times [2022-03-18 02:39:53,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:39:53,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929394244] [2022-03-18 02:39:53,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:39:53,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:39:53,900 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:39:53,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334177667] [2022-03-18 02:39:53,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:39:53,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:39:53,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:39:53,905 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:39:53,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-18 02:39:53,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:39:53,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:39:53,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 66 conjunts are in the unsatisfiable core [2022-03-18 02:39:53,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:39:54,874 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 87 proven. 52 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-03-18 02:39:54,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:40:38,793 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 81 proven. 43 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-03-18 02:40:38,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:40:38,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929394244] [2022-03-18 02:40:38,793 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:40:38,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334177667] [2022-03-18 02:40:38,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334177667] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:40:38,793 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:40:38,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 25 [2022-03-18 02:40:38,794 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:40:38,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [574166022] [2022-03-18 02:40:38,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [574166022] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:40:38,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:40:38,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 02:40:38,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847333472] [2022-03-18 02:40:38,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:40:38,795 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 02:40:38,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:40:38,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 02:40:38,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2022-03-18 02:40:38,796 INFO L87 Difference]: Start difference. First operand 147 states and 195 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 12 states have internal predecessors, (30), 7 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 6 states have call predecessors, (18), 7 states have call successors, (18) [2022-03-18 02:40:40,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:40:40,100 INFO L93 Difference]: Finished difference Result 154 states and 201 transitions. [2022-03-18 02:40:40,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-18 02:40:40,101 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 12 states have internal predecessors, (30), 7 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 6 states have call predecessors, (18), 7 states have call successors, (18) Word has length 107 [2022-03-18 02:40:40,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:40:40,102 INFO L225 Difference]: With dead ends: 154 [2022-03-18 02:40:40,102 INFO L226 Difference]: Without dead ends: 152 [2022-03-18 02:40:40,103 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 187 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=158, Invalid=654, Unknown=0, NotChecked=0, Total=812 [2022-03-18 02:40:40,103 INFO L912 BasicCegarLoop]: 37 mSDtfsCounter, 34 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-18 02:40:40,103 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 396 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-18 02:40:40,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-03-18 02:40:40,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 128. [2022-03-18 02:40:40,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 68 states have (on average 1.1323529411764706) internal successors, (77), 70 states have internal predecessors, (77), 47 states have call successors, (47), 13 states have call predecessors, (47), 12 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-03-18 02:40:40,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 168 transitions. [2022-03-18 02:40:40,127 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 168 transitions. Word has length 107 [2022-03-18 02:40:40,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:40:40,127 INFO L478 AbstractCegarLoop]: Abstraction has 128 states and 168 transitions. [2022-03-18 02:40:40,127 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 12 states have internal predecessors, (30), 7 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 6 states have call predecessors, (18), 7 states have call successors, (18) [2022-03-18 02:40:40,128 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 168 transitions. [2022-03-18 02:40:40,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-03-18 02:40:40,128 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:40:40,128 INFO L500 BasicCegarLoop]: trace histogram [13, 12, 12, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2022-03-18 02:40:40,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-03-18 02:40:40,335 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-03-18 02:40:40,335 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:40:40,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:40:40,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1185765869, now seen corresponding path program 3 times [2022-03-18 02:40:40,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:40:40,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2049399593] [2022-03-18 02:40:40,336 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:40:40,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1185765869, now seen corresponding path program 4 times [2022-03-18 02:40:40,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:40:40,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551840918] [2022-03-18 02:40:40,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:40:40,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:40:40,347 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:40:40,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1014466959] [2022-03-18 02:40:40,347 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 02:40:40,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:40:40,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:40:40,348 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:40:40,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-18 02:40:40,395 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 02:40:40,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:40:40,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-18 02:40:40,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:40:41,017 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 70 proven. 34 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-03-18 02:40:41,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:40:43,760 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 70 proven. 34 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-03-18 02:40:43,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:40:43,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551840918] [2022-03-18 02:40:43,760 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:40:43,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014466959] [2022-03-18 02:40:43,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014466959] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:40:43,760 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:40:43,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 24 [2022-03-18 02:40:43,761 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:40:43,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2049399593] [2022-03-18 02:40:43,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2049399593] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:40:43,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:40:43,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-18 02:40:43,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454654874] [2022-03-18 02:40:43,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:40:43,761 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 02:40:43,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:40:43,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 02:40:43,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2022-03-18 02:40:43,762 INFO L87 Difference]: Start difference. First operand 128 states and 168 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2022-03-18 02:40:44,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:40:44,515 INFO L93 Difference]: Finished difference Result 162 states and 215 transitions. [2022-03-18 02:40:44,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 02:40:44,516 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) Word has length 113 [2022-03-18 02:40:44,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:40:44,517 INFO L225 Difference]: With dead ends: 162 [2022-03-18 02:40:44,517 INFO L226 Difference]: Without dead ends: 159 [2022-03-18 02:40:44,517 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 201 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2022-03-18 02:40:44,517 INFO L912 BasicCegarLoop]: 51 mSDtfsCounter, 27 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 02:40:44,518 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 549 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 02:40:44,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-03-18 02:40:44,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2022-03-18 02:40:44,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 83 states have (on average 1.1325301204819278) internal successors, (94), 85 states have internal predecessors, (94), 59 states have call successors, (59), 15 states have call predecessors, (59), 14 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-03-18 02:40:44,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 209 transitions. [2022-03-18 02:40:44,534 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 209 transitions. Word has length 113 [2022-03-18 02:40:44,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:40:44,535 INFO L478 AbstractCegarLoop]: Abstraction has 157 states and 209 transitions. [2022-03-18 02:40:44,535 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2022-03-18 02:40:44,535 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 209 transitions. [2022-03-18 02:40:44,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-03-18 02:40:44,535 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:40:44,536 INFO L500 BasicCegarLoop]: trace histogram [13, 12, 12, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:40:44,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-18 02:40:44,751 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:40:44,751 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:40:44,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:40:44,752 INFO L85 PathProgramCache]: Analyzing trace with hash 884638574, now seen corresponding path program 5 times [2022-03-18 02:40:44,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:40:44,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [556583048] [2022-03-18 02:40:44,752 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:40:44,752 INFO L85 PathProgramCache]: Analyzing trace with hash 884638574, now seen corresponding path program 6 times [2022-03-18 02:40:44,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:40:44,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195235877] [2022-03-18 02:40:44,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:40:44,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:40:44,758 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:40:44,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [505376300] [2022-03-18 02:40:44,758 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 02:40:44,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:40:44,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:40:44,763 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:40:44,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-18 02:40:44,811 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-18 02:40:44,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:40:44,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-18 02:40:44,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:40:44,946 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2022-03-18 02:40:44,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:40:45,088 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2022-03-18 02:40:45,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:40:45,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195235877] [2022-03-18 02:40:45,089 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:40:45,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505376300] [2022-03-18 02:40:45,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505376300] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:40:45,089 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:40:45,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2022-03-18 02:40:45,089 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:40:45,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [556583048] [2022-03-18 02:40:45,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [556583048] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:40:45,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:40:45,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 02:40:45,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440245880] [2022-03-18 02:40:45,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:40:45,089 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 02:40:45,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:40:45,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 02:40:45,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-18 02:40:45,090 INFO L87 Difference]: Start difference. First operand 157 states and 209 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 4 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-03-18 02:40:45,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:40:45,250 INFO L93 Difference]: Finished difference Result 211 states and 298 transitions. [2022-03-18 02:40:45,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 02:40:45,250 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 4 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 116 [2022-03-18 02:40:45,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:40:45,252 INFO L225 Difference]: With dead ends: 211 [2022-03-18 02:40:45,252 INFO L226 Difference]: Without dead ends: 203 [2022-03-18 02:40:45,252 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 227 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-03-18 02:40:45,253 INFO L912 BasicCegarLoop]: 85 mSDtfsCounter, 14 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 02:40:45,253 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 359 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 02:40:45,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-03-18 02:40:45,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 184. [2022-03-18 02:40:45,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 94 states have (on average 1.1595744680851063) internal successors, (109), 96 states have internal predecessors, (109), 75 states have call successors, (75), 15 states have call predecessors, (75), 14 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-03-18 02:40:45,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 256 transitions. [2022-03-18 02:40:45,289 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 256 transitions. Word has length 116 [2022-03-18 02:40:45,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:40:45,290 INFO L478 AbstractCegarLoop]: Abstraction has 184 states and 256 transitions. [2022-03-18 02:40:45,290 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 4 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-03-18 02:40:45,290 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 256 transitions. [2022-03-18 02:40:45,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-03-18 02:40:45,291 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:40:45,291 INFO L500 BasicCegarLoop]: trace histogram [14, 13, 13, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-03-18 02:40:45,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-18 02:40:45,507 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-18 02:40:45,507 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:40:45,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:40:45,508 INFO L85 PathProgramCache]: Analyzing trace with hash -743412771, now seen corresponding path program 3 times [2022-03-18 02:40:45,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:40:45,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [940385773] [2022-03-18 02:40:45,508 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:40:45,508 INFO L85 PathProgramCache]: Analyzing trace with hash -743412771, now seen corresponding path program 4 times [2022-03-18 02:40:45,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:40:45,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582218216] [2022-03-18 02:40:45,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:40:45,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:40:45,515 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:40:45,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1230865258] [2022-03-18 02:40:45,515 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 02:40:45,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:40:45,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:40:45,516 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:40:45,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-18 02:40:45,559 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 02:40:45,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:40:45,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-18 02:40:45,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:40:45,728 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 73 proven. 7 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2022-03-18 02:40:45,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:40:45,906 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 73 proven. 7 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2022-03-18 02:40:45,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:40:45,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582218216] [2022-03-18 02:40:45,907 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:40:45,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230865258] [2022-03-18 02:40:45,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230865258] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:40:45,907 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:40:45,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-03-18 02:40:45,907 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:40:45,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [940385773] [2022-03-18 02:40:45,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [940385773] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:40:45,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:40:45,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 02:40:45,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849248985] [2022-03-18 02:40:45,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:40:45,908 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 02:40:45,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:40:45,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 02:40:45,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-18 02:40:45,908 INFO L87 Difference]: Start difference. First operand 184 states and 256 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-03-18 02:40:46,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:40:46,050 INFO L93 Difference]: Finished difference Result 198 states and 267 transitions. [2022-03-18 02:40:46,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 02:40:46,050 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 122 [2022-03-18 02:40:46,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:40:46,053 INFO L225 Difference]: With dead ends: 198 [2022-03-18 02:40:46,053 INFO L226 Difference]: Without dead ends: 195 [2022-03-18 02:40:46,053 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-03-18 02:40:46,054 INFO L912 BasicCegarLoop]: 36 mSDtfsCounter, 17 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 02:40:46,054 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 182 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 02:40:46,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-03-18 02:40:46,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194. [2022-03-18 02:40:46,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 103 states have (on average 1.145631067961165) internal successors, (118), 104 states have internal predecessors, (118), 73 states have call successors, (73), 18 states have call predecessors, (73), 17 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-03-18 02:40:46,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 262 transitions. [2022-03-18 02:40:46,080 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 262 transitions. Word has length 122 [2022-03-18 02:40:46,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:40:46,080 INFO L478 AbstractCegarLoop]: Abstraction has 194 states and 262 transitions. [2022-03-18 02:40:46,080 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-03-18 02:40:46,080 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 262 transitions. [2022-03-18 02:40:46,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-03-18 02:40:46,082 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:40:46,082 INFO L500 BasicCegarLoop]: trace histogram [15, 14, 14, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-03-18 02:40:46,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-18 02:40:46,287 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-18 02:40:46,287 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:40:46,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:40:46,288 INFO L85 PathProgramCache]: Analyzing trace with hash 541794983, now seen corresponding path program 5 times [2022-03-18 02:40:46,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:40:46,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1791716592] [2022-03-18 02:40:46,288 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:40:46,288 INFO L85 PathProgramCache]: Analyzing trace with hash 541794983, now seen corresponding path program 6 times [2022-03-18 02:40:46,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:40:46,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548617908] [2022-03-18 02:40:46,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:40:46,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:40:46,294 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:40:46,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [973874968] [2022-03-18 02:40:46,295 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 02:40:46,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:40:46,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:40:46,296 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:40:46,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-18 02:40:46,370 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-18 02:40:46,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:40:46,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 51 conjunts are in the unsatisfiable core [2022-03-18 02:40:46,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:40:47,009 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 28 proven. 37 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2022-03-18 02:40:47,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:40:47,780 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 36 proven. 29 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2022-03-18 02:40:47,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:40:47,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548617908] [2022-03-18 02:40:47,780 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:40:47,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973874968] [2022-03-18 02:40:47,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973874968] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:40:47,781 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:40:47,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2022-03-18 02:40:47,781 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:40:47,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1791716592] [2022-03-18 02:40:47,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1791716592] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:40:47,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:40:47,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 02:40:47,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496757443] [2022-03-18 02:40:47,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:40:47,782 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 02:40:47,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:40:47,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 02:40:47,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-18 02:40:47,782 INFO L87 Difference]: Start difference. First operand 194 states and 262 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 6 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2022-03-18 02:40:48,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:40:48,217 INFO L93 Difference]: Finished difference Result 265 states and 355 transitions. [2022-03-18 02:40:48,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 02:40:48,217 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 6 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) Word has length 127 [2022-03-18 02:40:48,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:40:48,219 INFO L225 Difference]: With dead ends: 265 [2022-03-18 02:40:48,219 INFO L226 Difference]: Without dead ends: 263 [2022-03-18 02:40:48,220 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 234 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2022-03-18 02:40:48,221 INFO L912 BasicCegarLoop]: 65 mSDtfsCounter, 22 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 02:40:48,221 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 562 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 02:40:48,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-03-18 02:40:48,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 260. [2022-03-18 02:40:48,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 139 states have (on average 1.1366906474820144) internal successors, (158), 140 states have internal predecessors, (158), 97 states have call successors, (97), 24 states have call predecessors, (97), 23 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2022-03-18 02:40:48,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 350 transitions. [2022-03-18 02:40:48,255 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 350 transitions. Word has length 127 [2022-03-18 02:40:48,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:40:48,255 INFO L478 AbstractCegarLoop]: Abstraction has 260 states and 350 transitions. [2022-03-18 02:40:48,255 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 6 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2022-03-18 02:40:48,255 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 350 transitions. [2022-03-18 02:40:48,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-03-18 02:40:48,256 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:40:48,257 INFO L500 BasicCegarLoop]: trace histogram [16, 15, 15, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:40:48,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-03-18 02:40:48,471 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-18 02:40:48,472 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:40:48,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:40:48,472 INFO L85 PathProgramCache]: Analyzing trace with hash -2138166692, now seen corresponding path program 7 times [2022-03-18 02:40:48,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:40:48,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1360464777] [2022-03-18 02:40:48,473 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:40:48,473 INFO L85 PathProgramCache]: Analyzing trace with hash -2138166692, now seen corresponding path program 8 times [2022-03-18 02:40:48,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:40:48,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195907932] [2022-03-18 02:40:48,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:40:48,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:40:48,479 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:40:48,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2143630919] [2022-03-18 02:40:48,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:40:48,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:40:48,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:40:48,480 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:40:48,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-18 02:40:48,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:40:48,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:40:48,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 71 conjunts are in the unsatisfiable core [2022-03-18 02:40:48,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:40:49,708 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 142 proven. 88 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2022-03-18 02:40:49,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:40:51,297 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 02:40:53,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:40:53,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195907932] [2022-03-18 02:40:53,812 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:40:53,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143630919] [2022-03-18 02:40:53,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143630919] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 02:40:53,812 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-18 02:40:53,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-03-18 02:40:53,812 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:40:53,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1360464777] [2022-03-18 02:40:53,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1360464777] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:40:53,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:40:53,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 02:40:53,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932899757] [2022-03-18 02:40:53,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:40:53,812 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 02:40:53,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:40:53,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 02:40:53,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=437, Unknown=1, NotChecked=0, Total=552 [2022-03-18 02:40:53,813 INFO L87 Difference]: Start difference. First operand 260 states and 350 transitions. Second operand has 16 states, 16 states have (on average 2.0) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) [2022-03-18 02:40:56,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:40:56,870 INFO L93 Difference]: Finished difference Result 268 states and 357 transitions. [2022-03-18 02:40:56,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 02:40:56,870 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) Word has length 129 [2022-03-18 02:40:56,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:40:56,872 INFO L225 Difference]: With dead ends: 268 [2022-03-18 02:40:56,872 INFO L226 Difference]: Without dead ends: 266 [2022-03-18 02:40:56,873 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 142 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=159, Invalid=651, Unknown=2, NotChecked=0, Total=812 [2022-03-18 02:40:56,874 INFO L912 BasicCegarLoop]: 43 mSDtfsCounter, 35 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 02:40:56,874 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 392 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 02:40:56,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-03-18 02:40:56,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 264. [2022-03-18 02:40:56,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 142 states have (on average 1.1338028169014085) internal successors, (161), 143 states have internal predecessors, (161), 97 states have call successors, (97), 25 states have call predecessors, (97), 24 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2022-03-18 02:40:56,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 353 transitions. [2022-03-18 02:40:56,934 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 353 transitions. Word has length 129 [2022-03-18 02:40:56,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:40:56,934 INFO L478 AbstractCegarLoop]: Abstraction has 264 states and 353 transitions. [2022-03-18 02:40:56,934 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) [2022-03-18 02:40:56,935 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 353 transitions. [2022-03-18 02:40:56,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-03-18 02:40:56,936 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:40:56,936 INFO L500 BasicCegarLoop]: trace histogram [16, 15, 15, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-03-18 02:40:56,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-18 02:40:57,159 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:40:57,159 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:40:57,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:40:57,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1899875875, now seen corresponding path program 9 times [2022-03-18 02:40:57,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:40:57,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [188102931] [2022-03-18 02:40:57,160 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:40:57,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1899875875, now seen corresponding path program 10 times [2022-03-18 02:40:57,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:40:57,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29768969] [2022-03-18 02:40:57,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:40:57,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:40:57,168 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:40:57,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1562834712] [2022-03-18 02:40:57,168 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 02:40:57,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:40:57,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:40:57,170 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:40:57,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-18 02:40:57,235 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 02:40:57,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:40:57,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 79 conjunts are in the unsatisfiable core [2022-03-18 02:40:57,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:40:58,568 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 103 proven. 117 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-03-18 02:40:58,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:41:32,590 WARN L232 SmtUtils]: Spent 8.55s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-18 02:41:43,729 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~q~0 c_main_~x~0)) (.cse1 (* c_main_~s~0 c_main_~y~0))) (let ((.cse4 (+ .cse0 .cse1)) (.cse7 (* c_main_~q~0 c_main_~x~0 c_main_~k~0)) (.cse8 (* c_main_~s~0 c_main_~y~0 c_main_~k~0)) (.cse2 (* c_main_~q~0 c_main_~xy~0)) (.cse3 (* c_main_~yy~0 c_main_~s~0)) (.cse5 (* c_main_~p~0 c_main_~x~0)) (.cse6 (* c_main_~r~0 c_main_~y~0))) (or (not (= (+ .cse0 .cse1 (* c_main_~b~0 c_main_~y~0)) (+ .cse2 .cse3 c_main_~b~0))) (<= (* 2 c_main_~c~0) .cse4) (<= c_main_~b~0 c_main_~c~0) (not (= c_main_~b~0 .cse4)) (not (= (+ .cse5 .cse6) (+ .cse7 c_main_~c~0 .cse8))) (= (+ (* c_main_~yy~0 c_main_~r~0) (* c_main_~q~0 c_main_~x~0 c_main_~y~0) .cse7 c_main_~c~0 .cse8 (* c_main_~xy~0 c_main_~p~0) (* c_main_~s~0 c_main_~y~0 c_main_~y~0)) (+ .cse2 (* c_main_~q~0 c_main_~xy~0 c_main_~k~0) (* c_main_~yy~0 c_main_~s~0 c_main_~k~0) .cse3 .cse5 .cse6 (* c_main_~c~0 c_main_~y~0)))))) is different from true [2022-03-18 02:42:21,792 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 113 proven. 77 refuted. 0 times theorem prover too weak. 348 trivial. 12 not checked. [2022-03-18 02:42:21,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:42:21,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29768969] [2022-03-18 02:42:21,792 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:42:21,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562834712] [2022-03-18 02:42:21,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562834712] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:42:21,793 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:42:21,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19] total 30 [2022-03-18 02:42:21,793 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:42:21,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [188102931] [2022-03-18 02:42:21,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [188102931] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:42:21,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:42:21,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 02:42:21,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413714005] [2022-03-18 02:42:21,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:42:21,794 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 02:42:21,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:42:21,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 02:42:21,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=626, Unknown=7, NotChecked=54, Total=870 [2022-03-18 02:42:21,794 INFO L87 Difference]: Start difference. First operand 264 states and 353 transitions. Second operand has 16 states, 16 states have (on average 2.0) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) [2022-03-18 02:42:26,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:42:26,864 INFO L93 Difference]: Finished difference Result 277 states and 364 transitions. [2022-03-18 02:42:26,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-18 02:42:26,865 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) Word has length 132 [2022-03-18 02:42:26,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:42:26,867 INFO L225 Difference]: With dead ends: 277 [2022-03-18 02:42:26,867 INFO L226 Difference]: Without dead ends: 275 [2022-03-18 02:42:26,867 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 232 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 36.5s TimeCoverageRelationStatistics Valid=262, Invalid=923, Unknown=9, NotChecked=66, Total=1260 [2022-03-18 02:42:26,868 INFO L912 BasicCegarLoop]: 50 mSDtfsCounter, 31 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 02:42:26,868 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 552 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 02:42:26,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-03-18 02:42:26,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 239. [2022-03-18 02:42:26,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 130 states have (on average 1.1307692307692307) internal successors, (147), 131 states have internal predecessors, (147), 85 states have call successors, (85), 24 states have call predecessors, (85), 23 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2022-03-18 02:42:26,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 315 transitions. [2022-03-18 02:42:26,910 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 315 transitions. Word has length 132 [2022-03-18 02:42:26,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:42:26,910 INFO L478 AbstractCegarLoop]: Abstraction has 239 states and 315 transitions. [2022-03-18 02:42:26,911 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) [2022-03-18 02:42:26,911 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 315 transitions. [2022-03-18 02:42:26,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-03-18 02:42:26,911 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:42:26,911 INFO L500 BasicCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:42:26,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-18 02:42:27,127 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:42:27,127 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:42:27,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:42:27,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1068997356, now seen corresponding path program 7 times [2022-03-18 02:42:27,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:42:27,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2074967852] [2022-03-18 02:42:27,128 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:42:27,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1068997356, now seen corresponding path program 8 times [2022-03-18 02:42:27,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:42:27,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093672237] [2022-03-18 02:42:27,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:42:27,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:42:27,134 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:42:27,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [280095911] [2022-03-18 02:42:27,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:42:27,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:42:27,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:42:27,137 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:42:27,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-18 02:42:27,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:42:27,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:42:27,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 55 conjunts are in the unsatisfiable core [2022-03-18 02:42:27,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:42:27,966 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 102 proven. 52 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2022-03-18 02:42:27,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:42:30,006 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 102 proven. 52 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2022-03-18 02:42:30,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:42:30,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093672237] [2022-03-18 02:42:30,006 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:42:30,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280095911] [2022-03-18 02:42:30,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280095911] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:42:30,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:42:30,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 26 [2022-03-18 02:42:30,006 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:42:30,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2074967852] [2022-03-18 02:42:30,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2074967852] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:42:30,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:42:30,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 02:42:30,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832029761] [2022-03-18 02:42:30,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:42:30,007 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 02:42:30,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:42:30,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 02:42:30,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2022-03-18 02:42:30,008 INFO L87 Difference]: Start difference. First operand 239 states and 315 transitions. Second operand has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 8 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) [2022-03-18 02:42:31,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:42:31,220 INFO L93 Difference]: Finished difference Result 284 states and 377 transitions. [2022-03-18 02:42:31,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-18 02:42:31,220 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 8 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) Word has length 135 [2022-03-18 02:42:31,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:42:31,221 INFO L225 Difference]: With dead ends: 284 [2022-03-18 02:42:31,222 INFO L226 Difference]: Without dead ends: 281 [2022-03-18 02:42:31,222 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 243 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=172, Invalid=698, Unknown=0, NotChecked=0, Total=870 [2022-03-18 02:42:31,222 INFO L912 BasicCegarLoop]: 55 mSDtfsCounter, 35 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 02:42:31,222 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 427 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 02:42:31,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-03-18 02:42:31,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 278. [2022-03-18 02:42:31,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 150 states have (on average 1.1333333333333333) internal successors, (170), 151 states have internal predecessors, (170), 101 states have call successors, (101), 27 states have call predecessors, (101), 26 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2022-03-18 02:42:31,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 370 transitions. [2022-03-18 02:42:31,265 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 370 transitions. Word has length 135 [2022-03-18 02:42:31,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:42:31,265 INFO L478 AbstractCegarLoop]: Abstraction has 278 states and 370 transitions. [2022-03-18 02:42:31,265 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 8 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) [2022-03-18 02:42:31,266 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 370 transitions. [2022-03-18 02:42:31,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-03-18 02:42:31,266 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:42:31,266 INFO L500 BasicCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-03-18 02:42:31,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-18 02:42:31,467 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-03-18 02:42:31,467 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:42:31,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:42:31,467 INFO L85 PathProgramCache]: Analyzing trace with hash -896647763, now seen corresponding path program 9 times [2022-03-18 02:42:31,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:42:31,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [470619839] [2022-03-18 02:42:31,468 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:42:31,468 INFO L85 PathProgramCache]: Analyzing trace with hash -896647763, now seen corresponding path program 10 times [2022-03-18 02:42:31,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:42:31,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771241631] [2022-03-18 02:42:31,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:42:31,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:42:31,473 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:42:31,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1593660131] [2022-03-18 02:42:31,473 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 02:42:31,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:42:31,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:42:31,474 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:42:31,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-18 02:42:31,525 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 02:42:31,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:42:31,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 87 conjunts are in the unsatisfiable core [2022-03-18 02:42:31,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:42:33,130 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 02:42:33,134 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 02:42:33,713 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 144 proven. 111 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2022-03-18 02:42:33,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:42:37,890 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 169 proven. 21 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2022-03-18 02:42:37,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:42:37,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771241631] [2022-03-18 02:42:37,891 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:42:37,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593660131] [2022-03-18 02:42:37,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593660131] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:42:37,891 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:42:37,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 15] total 33 [2022-03-18 02:42:37,891 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:42:37,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [470619839] [2022-03-18 02:42:37,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [470619839] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:42:37,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:42:37,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-18 02:42:37,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196554401] [2022-03-18 02:42:37,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:42:37,892 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-18 02:42:37,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:42:37,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-18 02:42:37,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=871, Unknown=0, NotChecked=0, Total=1056 [2022-03-18 02:42:37,892 INFO L87 Difference]: Start difference. First operand 278 states and 370 transitions. Second operand has 23 states, 20 states have (on average 1.8) internal successors, (36), 17 states have internal predecessors, (36), 10 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 11 states have call predecessors, (23), 9 states have call successors, (23) [2022-03-18 02:42:43,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:42:43,333 INFO L93 Difference]: Finished difference Result 327 states and 435 transitions. [2022-03-18 02:42:43,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-18 02:42:43,335 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 1.8) internal successors, (36), 17 states have internal predecessors, (36), 10 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 11 states have call predecessors, (23), 9 states have call successors, (23) Word has length 138 [2022-03-18 02:42:43,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:42:43,336 INFO L225 Difference]: With dead ends: 327 [2022-03-18 02:42:43,336 INFO L226 Difference]: Without dead ends: 324 [2022-03-18 02:42:43,337 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 243 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=294, Invalid=1428, Unknown=0, NotChecked=0, Total=1722 [2022-03-18 02:42:43,337 INFO L912 BasicCegarLoop]: 46 mSDtfsCounter, 52 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-03-18 02:42:43,337 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 644 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-03-18 02:42:43,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-03-18 02:42:43,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 321. [2022-03-18 02:42:43,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 173 states have (on average 1.1329479768786128) internal successors, (196), 174 states have internal predecessors, (196), 117 states have call successors, (117), 31 states have call predecessors, (117), 30 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2022-03-18 02:42:43,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 428 transitions. [2022-03-18 02:42:43,383 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 428 transitions. Word has length 138 [2022-03-18 02:42:43,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:42:43,383 INFO L478 AbstractCegarLoop]: Abstraction has 321 states and 428 transitions. [2022-03-18 02:42:43,383 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 1.8) internal successors, (36), 17 states have internal predecessors, (36), 10 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 11 states have call predecessors, (23), 9 states have call successors, (23) [2022-03-18 02:42:43,383 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 428 transitions. [2022-03-18 02:42:43,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-03-18 02:42:43,384 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:42:43,384 INFO L500 BasicCegarLoop]: trace histogram [19, 18, 18, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:42:43,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-18 02:42:43,599 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-03-18 02:42:43,599 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:42:43,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:42:43,600 INFO L85 PathProgramCache]: Analyzing trace with hash -604751514, now seen corresponding path program 11 times [2022-03-18 02:42:43,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:42:43,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2028959211] [2022-03-18 02:42:43,600 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:42:43,600 INFO L85 PathProgramCache]: Analyzing trace with hash -604751514, now seen corresponding path program 12 times [2022-03-18 02:42:43,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:42:43,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42880416] [2022-03-18 02:42:43,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:42:43,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:42:43,606 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:42:43,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1089716172] [2022-03-18 02:42:43,606 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 02:42:43,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:42:43,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:42:43,607 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:42:43,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-18 02:42:43,676 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-18 02:42:43,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:42:43,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-18 02:42:43,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:42:44,134 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 109 proven. 76 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2022-03-18 02:42:44,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:42:44,539 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 149 proven. 31 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2022-03-18 02:42:44,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:42:44,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42880416] [2022-03-18 02:42:44,540 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:42:44,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089716172] [2022-03-18 02:42:44,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089716172] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:42:44,540 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:42:44,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 17 [2022-03-18 02:42:44,540 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:42:44,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2028959211] [2022-03-18 02:42:44,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2028959211] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:42:44,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:42:44,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 02:42:44,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965639735] [2022-03-18 02:42:44,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:42:44,541 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 02:42:44,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:42:44,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 02:42:44,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-03-18 02:42:44,541 INFO L87 Difference]: Start difference. First operand 321 states and 428 transitions. Second operand has 13 states, 12 states have (on average 2.75) internal successors, (33), 10 states have internal predecessors, (33), 7 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 7 states have call predecessors, (21), 6 states have call successors, (21) [2022-03-18 02:42:45,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:42:45,182 INFO L93 Difference]: Finished difference Result 360 states and 478 transitions. [2022-03-18 02:42:45,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-18 02:42:45,182 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 10 states have internal predecessors, (33), 7 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 7 states have call predecessors, (21), 6 states have call successors, (21) Word has length 149 [2022-03-18 02:42:45,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:42:45,184 INFO L225 Difference]: With dead ends: 360 [2022-03-18 02:42:45,184 INFO L226 Difference]: Without dead ends: 358 [2022-03-18 02:42:45,184 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 279 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2022-03-18 02:42:45,184 INFO L912 BasicCegarLoop]: 54 mSDtfsCounter, 38 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 02:42:45,184 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 477 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 02:42:45,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-03-18 02:42:45,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 354. [2022-03-18 02:42:45,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 191 states have (on average 1.130890052356021) internal successors, (216), 192 states have internal predecessors, (216), 129 states have call successors, (129), 34 states have call predecessors, (129), 33 states have return successors, (127), 127 states have call predecessors, (127), 127 states have call successors, (127) [2022-03-18 02:42:45,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 472 transitions. [2022-03-18 02:42:45,241 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 472 transitions. Word has length 149 [2022-03-18 02:42:45,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:42:45,242 INFO L478 AbstractCegarLoop]: Abstraction has 354 states and 472 transitions. [2022-03-18 02:42:45,242 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 10 states have internal predecessors, (33), 7 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 7 states have call predecessors, (21), 6 states have call successors, (21) [2022-03-18 02:42:45,242 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 472 transitions. [2022-03-18 02:42:45,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-03-18 02:42:45,243 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:42:45,243 INFO L500 BasicCegarLoop]: trace histogram [20, 19, 19, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 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] [2022-03-18 02:42:45,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-18 02:42:45,459 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:42:45,459 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:42:45,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:42:45,460 INFO L85 PathProgramCache]: Analyzing trace with hash -162755237, now seen corresponding path program 13 times [2022-03-18 02:42:45,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:42:45,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1038094186] [2022-03-18 02:42:45,460 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:42:45,460 INFO L85 PathProgramCache]: Analyzing trace with hash -162755237, now seen corresponding path program 14 times [2022-03-18 02:42:45,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:42:45,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986830259] [2022-03-18 02:42:45,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:42:45,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:42:45,465 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:42:45,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2041528512] [2022-03-18 02:42:45,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:42:45,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:42:45,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:42:45,467 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:42:45,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-18 02:42:45,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:42:45,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:42:45,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 84 conjunts are in the unsatisfiable core [2022-03-18 02:42:45,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:42:46,837 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 170 proven. 175 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-03-18 02:42:46,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:43:12,731 WARN L232 SmtUtils]: Spent 6.72s on a formula simplification that was a NOOP. DAG size: 60 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-18 02:43:31,682 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 157 proven. 118 refuted. 1 times theorem prover too weak. 564 trivial. 0 not checked. [2022-03-18 02:43:31,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:43:31,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986830259] [2022-03-18 02:43:31,683 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:43:31,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041528512] [2022-03-18 02:43:31,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041528512] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:43:31,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:43:31,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 29 [2022-03-18 02:43:31,683 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:43:31,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1038094186] [2022-03-18 02:43:31,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1038094186] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:43:31,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:43:31,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-03-18 02:43:31,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520962312] [2022-03-18 02:43:31,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:43:31,684 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-18 02:43:31,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:43:31,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-18 02:43:31,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=641, Unknown=3, NotChecked=0, Total=812 [2022-03-18 02:43:31,684 INFO L87 Difference]: Start difference. First operand 354 states and 472 transitions. Second operand has 17 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 9 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 8 states have call predecessors, (26), 9 states have call successors, (26) [2022-03-18 02:43:33,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:43:33,122 INFO L93 Difference]: Finished difference Result 363 states and 480 transitions. [2022-03-18 02:43:33,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 02:43:33,123 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 9 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 8 states have call predecessors, (26), 9 states have call successors, (26) Word has length 151 [2022-03-18 02:43:33,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:43:33,125 INFO L225 Difference]: With dead ends: 363 [2022-03-18 02:43:33,125 INFO L226 Difference]: Without dead ends: 361 [2022-03-18 02:43:33,126 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 268 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=203, Invalid=850, Unknown=3, NotChecked=0, Total=1056 [2022-03-18 02:43:33,126 INFO L912 BasicCegarLoop]: 46 mSDtfsCounter, 42 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-18 02:43:33,126 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 456 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-18 02:43:33,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2022-03-18 02:43:33,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 325. [2022-03-18 02:43:33,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 176 states have (on average 1.1306818181818181) internal successors, (199), 177 states have internal predecessors, (199), 117 states have call successors, (117), 32 states have call predecessors, (117), 31 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2022-03-18 02:43:33,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 431 transitions. [2022-03-18 02:43:33,192 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 431 transitions. Word has length 151 [2022-03-18 02:43:33,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:43:33,192 INFO L478 AbstractCegarLoop]: Abstraction has 325 states and 431 transitions. [2022-03-18 02:43:33,192 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 9 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 8 states have call predecessors, (26), 9 states have call successors, (26) [2022-03-18 02:43:33,192 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 431 transitions. [2022-03-18 02:43:33,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-03-18 02:43:33,193 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:43:33,193 INFO L500 BasicCegarLoop]: trace histogram [20, 19, 19, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:43:33,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-18 02:43:33,407 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:43:33,411 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:43:33,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:43:33,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1672449564, now seen corresponding path program 15 times [2022-03-18 02:43:33,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:43:33,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [683686004] [2022-03-18 02:43:33,412 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:43:33,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1672449564, now seen corresponding path program 16 times [2022-03-18 02:43:33,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:43:33,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030289139] [2022-03-18 02:43:33,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:43:33,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:43:33,418 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:43:33,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [683905981] [2022-03-18 02:43:33,419 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 02:43:33,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:43:33,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:43:33,420 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:43:33,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-18 02:43:33,492 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 02:43:33,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:43:33,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 111 conjunts are in the unsatisfiable core [2022-03-18 02:43:33,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:43:35,422 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 161 proven. 225 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2022-03-18 02:43:35,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:43:42,581 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 02:44:04,358 WARN L232 SmtUtils]: Spent 14.67s on a formula simplification. DAG size of input: 74 DAG size of output: 51 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-18 02:47:22,178 WARN L855 $PredicateComparison]: unable to prove that (forall ((v_main_~q~0_BEFORE_CALL_370 Int) (v_main_~k~0_BEFORE_CALL_255 Int) (v_main_~r~0_BEFORE_CALL_323 Int) (v_main_~y~0_BEFORE_CALL_394 Int) (v_main_~xy~0_BEFORE_CALL_200 Int) (v_main_~x~0_BEFORE_CALL_388 Int) (v_main_~yy~0_BEFORE_CALL_190 Int) (v_main_~s~0_BEFORE_CALL_376 Int) (v_main_~p~0_BEFORE_CALL_303 Int)) (let ((.cse9 (+ v_main_~p~0_BEFORE_CALL_303 (* (- 1) v_main_~k~0_BEFORE_CALL_255 v_main_~q~0_BEFORE_CALL_370))) (.cse10 (+ (* (- 1) (* v_main_~k~0_BEFORE_CALL_255 v_main_~s~0_BEFORE_CALL_376)) v_main_~r~0_BEFORE_CALL_323)) (.cse0 (* v_main_~y~0_BEFORE_CALL_394 v_main_~s~0_BEFORE_CALL_376)) (.cse1 (* v_main_~x~0_BEFORE_CALL_388 v_main_~q~0_BEFORE_CALL_370)) (.cse7 (* v_main_~y~0_BEFORE_CALL_394 v_main_~r~0_BEFORE_CALL_323)) (.cse8 (* v_main_~p~0_BEFORE_CALL_303 v_main_~x~0_BEFORE_CALL_388))) (let ((.cse3 (+ .cse7 .cse8)) (.cse2 (+ .cse0 .cse1)) (.cse5 (* v_main_~y~0_BEFORE_CALL_394 .cse10)) (.cse6 (* .cse9 v_main_~x~0_BEFORE_CALL_388))) (or (not (= (+ .cse0 .cse1 (* v_main_~s~0_BEFORE_CALL_376 v_main_~yy~0_BEFORE_CALL_190) (* v_main_~xy~0_BEFORE_CALL_200 v_main_~q~0_BEFORE_CALL_370)) (+ .cse0 .cse1 (* .cse2 v_main_~y~0_BEFORE_CALL_394)))) (<= (+ .cse0 (* v_main_~k~0_BEFORE_CALL_255 v_main_~y~0_BEFORE_CALL_394 v_main_~s~0_BEFORE_CALL_376) .cse1 (* v_main_~k~0_BEFORE_CALL_255 v_main_~x~0_BEFORE_CALL_388 v_main_~q~0_BEFORE_CALL_370)) .cse3) (not (= |c___VERIFIER_assert_#in~cond| 1)) (let ((.cse4 (div (+ .cse7 (* (- 1) .cse5) (* (- 1) .cse6) .cse8) .cse2))) (and (not (= (+ (* v_main_~p~0_BEFORE_CALL_303 v_main_~y~0_BEFORE_CALL_394 v_main_~x~0_BEFORE_CALL_388) (* v_main_~y~0_BEFORE_CALL_394 v_main_~y~0_BEFORE_CALL_394 v_main_~r~0_BEFORE_CALL_323) (* v_main_~s~0_BEFORE_CALL_376 v_main_~yy~0_BEFORE_CALL_190 .cse4) (* v_main_~xy~0_BEFORE_CALL_200 .cse4 v_main_~q~0_BEFORE_CALL_370)) (+ (* v_main_~y~0_BEFORE_CALL_394 v_main_~x~0_BEFORE_CALL_388 .cse4 v_main_~q~0_BEFORE_CALL_370) (* v_main_~p~0_BEFORE_CALL_303 v_main_~xy~0_BEFORE_CALL_200) (* v_main_~y~0_BEFORE_CALL_394 v_main_~y~0_BEFORE_CALL_394 v_main_~s~0_BEFORE_CALL_376 .cse4) (* v_main_~yy~0_BEFORE_CALL_190 v_main_~r~0_BEFORE_CALL_323)))) (= .cse3 (+ (* v_main_~y~0_BEFORE_CALL_394 v_main_~s~0_BEFORE_CALL_376 .cse4) .cse5 .cse6 (* v_main_~x~0_BEFORE_CALL_388 .cse4 v_main_~q~0_BEFORE_CALL_370))))) (= (+ .cse5 .cse6 (* v_main_~y~0_BEFORE_CALL_394 (+ .cse5 .cse6))) (+ .cse5 .cse6 (* .cse9 v_main_~xy~0_BEFORE_CALL_200) (* v_main_~yy~0_BEFORE_CALL_190 .cse10))))))) is different from true [2022-03-18 02:49:13,500 WARN L855 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 1)) (forall ((v_main_~q~0_BEFORE_CALL_370 Int) (v_main_~k~0_BEFORE_CALL_255 Int) (v_main_~r~0_BEFORE_CALL_323 Int) (v_main_~y~0_BEFORE_CALL_394 Int) (v_main_~xy~0_BEFORE_CALL_200 Int) (v_main_~x~0_BEFORE_CALL_388 Int) (v_main_~yy~0_BEFORE_CALL_190 Int) (v_main_~s~0_BEFORE_CALL_376 Int) (v_main_~p~0_BEFORE_CALL_303 Int)) (let ((.cse9 (+ v_main_~p~0_BEFORE_CALL_303 (* (- 1) v_main_~k~0_BEFORE_CALL_255 v_main_~q~0_BEFORE_CALL_370))) (.cse10 (+ (* (- 1) (* v_main_~k~0_BEFORE_CALL_255 v_main_~s~0_BEFORE_CALL_376)) v_main_~r~0_BEFORE_CALL_323)) (.cse0 (* v_main_~y~0_BEFORE_CALL_394 v_main_~s~0_BEFORE_CALL_376)) (.cse1 (* v_main_~x~0_BEFORE_CALL_388 v_main_~q~0_BEFORE_CALL_370)) (.cse7 (* v_main_~y~0_BEFORE_CALL_394 v_main_~r~0_BEFORE_CALL_323)) (.cse8 (* v_main_~p~0_BEFORE_CALL_303 v_main_~x~0_BEFORE_CALL_388))) (let ((.cse3 (+ .cse7 .cse8)) (.cse2 (+ .cse0 .cse1)) (.cse5 (* v_main_~y~0_BEFORE_CALL_394 .cse10)) (.cse6 (* .cse9 v_main_~x~0_BEFORE_CALL_388))) (or (not (= (+ .cse0 .cse1 (* v_main_~s~0_BEFORE_CALL_376 v_main_~yy~0_BEFORE_CALL_190) (* v_main_~xy~0_BEFORE_CALL_200 v_main_~q~0_BEFORE_CALL_370)) (+ .cse0 .cse1 (* .cse2 v_main_~y~0_BEFORE_CALL_394)))) (<= (+ .cse0 (* v_main_~k~0_BEFORE_CALL_255 v_main_~y~0_BEFORE_CALL_394 v_main_~s~0_BEFORE_CALL_376) .cse1 (* v_main_~k~0_BEFORE_CALL_255 v_main_~x~0_BEFORE_CALL_388 v_main_~q~0_BEFORE_CALL_370)) .cse3) (let ((.cse4 (div (+ .cse7 (* (- 1) .cse5) (* (- 1) .cse6) .cse8) .cse2))) (and (not (= (+ (* v_main_~p~0_BEFORE_CALL_303 v_main_~y~0_BEFORE_CALL_394 v_main_~x~0_BEFORE_CALL_388) (* v_main_~y~0_BEFORE_CALL_394 v_main_~y~0_BEFORE_CALL_394 v_main_~r~0_BEFORE_CALL_323) (* v_main_~s~0_BEFORE_CALL_376 v_main_~yy~0_BEFORE_CALL_190 .cse4) (* v_main_~xy~0_BEFORE_CALL_200 .cse4 v_main_~q~0_BEFORE_CALL_370)) (+ (* v_main_~y~0_BEFORE_CALL_394 v_main_~x~0_BEFORE_CALL_388 .cse4 v_main_~q~0_BEFORE_CALL_370) (* v_main_~p~0_BEFORE_CALL_303 v_main_~xy~0_BEFORE_CALL_200) (* v_main_~y~0_BEFORE_CALL_394 v_main_~y~0_BEFORE_CALL_394 v_main_~s~0_BEFORE_CALL_376 .cse4) (* v_main_~yy~0_BEFORE_CALL_190 v_main_~r~0_BEFORE_CALL_323)))) (= .cse3 (+ (* v_main_~y~0_BEFORE_CALL_394 v_main_~s~0_BEFORE_CALL_376 .cse4) .cse5 .cse6 (* v_main_~x~0_BEFORE_CALL_388 .cse4 v_main_~q~0_BEFORE_CALL_370))))) (= (+ .cse5 .cse6 (* v_main_~y~0_BEFORE_CALL_394 (+ .cse5 .cse6))) (+ .cse5 .cse6 (* .cse9 v_main_~xy~0_BEFORE_CALL_200) (* v_main_~yy~0_BEFORE_CALL_190 .cse10)))))))) is different from true [2022-03-18 02:50:22,695 WARN L855 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 1)) (forall ((v_main_~q~0_BEFORE_CALL_370 Int) (v_main_~k~0_BEFORE_CALL_255 Int) (v_main_~r~0_BEFORE_CALL_323 Int) (v_main_~y~0_BEFORE_CALL_394 Int) (v_main_~xy~0_BEFORE_CALL_200 Int) (v_main_~x~0_BEFORE_CALL_388 Int) (v_main_~yy~0_BEFORE_CALL_190 Int) (v_main_~s~0_BEFORE_CALL_376 Int) (v_main_~p~0_BEFORE_CALL_303 Int)) (let ((.cse9 (+ v_main_~p~0_BEFORE_CALL_303 (* (- 1) v_main_~k~0_BEFORE_CALL_255 v_main_~q~0_BEFORE_CALL_370))) (.cse10 (+ (* (- 1) (* v_main_~k~0_BEFORE_CALL_255 v_main_~s~0_BEFORE_CALL_376)) v_main_~r~0_BEFORE_CALL_323)) (.cse0 (* v_main_~y~0_BEFORE_CALL_394 v_main_~s~0_BEFORE_CALL_376)) (.cse1 (* v_main_~x~0_BEFORE_CALL_388 v_main_~q~0_BEFORE_CALL_370)) (.cse7 (* v_main_~y~0_BEFORE_CALL_394 v_main_~r~0_BEFORE_CALL_323)) (.cse8 (* v_main_~p~0_BEFORE_CALL_303 v_main_~x~0_BEFORE_CALL_388))) (let ((.cse3 (+ .cse7 .cse8)) (.cse2 (+ .cse0 .cse1)) (.cse5 (* v_main_~y~0_BEFORE_CALL_394 .cse10)) (.cse6 (* .cse9 v_main_~x~0_BEFORE_CALL_388))) (or (not (= (+ .cse0 .cse1 (* v_main_~s~0_BEFORE_CALL_376 v_main_~yy~0_BEFORE_CALL_190) (* v_main_~xy~0_BEFORE_CALL_200 v_main_~q~0_BEFORE_CALL_370)) (+ .cse0 .cse1 (* .cse2 v_main_~y~0_BEFORE_CALL_394)))) (<= (+ .cse0 (* v_main_~k~0_BEFORE_CALL_255 v_main_~y~0_BEFORE_CALL_394 v_main_~s~0_BEFORE_CALL_376) .cse1 (* v_main_~k~0_BEFORE_CALL_255 v_main_~x~0_BEFORE_CALL_388 v_main_~q~0_BEFORE_CALL_370)) .cse3) (let ((.cse4 (div (+ .cse7 (* (- 1) .cse5) (* (- 1) .cse6) .cse8) .cse2))) (and (not (= (+ (* v_main_~p~0_BEFORE_CALL_303 v_main_~y~0_BEFORE_CALL_394 v_main_~x~0_BEFORE_CALL_388) (* v_main_~y~0_BEFORE_CALL_394 v_main_~y~0_BEFORE_CALL_394 v_main_~r~0_BEFORE_CALL_323) (* v_main_~s~0_BEFORE_CALL_376 v_main_~yy~0_BEFORE_CALL_190 .cse4) (* v_main_~xy~0_BEFORE_CALL_200 .cse4 v_main_~q~0_BEFORE_CALL_370)) (+ (* v_main_~y~0_BEFORE_CALL_394 v_main_~x~0_BEFORE_CALL_388 .cse4 v_main_~q~0_BEFORE_CALL_370) (* v_main_~p~0_BEFORE_CALL_303 v_main_~xy~0_BEFORE_CALL_200) (* v_main_~y~0_BEFORE_CALL_394 v_main_~y~0_BEFORE_CALL_394 v_main_~s~0_BEFORE_CALL_376 .cse4) (* v_main_~yy~0_BEFORE_CALL_190 v_main_~r~0_BEFORE_CALL_323)))) (= .cse3 (+ (* v_main_~y~0_BEFORE_CALL_394 v_main_~s~0_BEFORE_CALL_376 .cse4) .cse5 .cse6 (* v_main_~x~0_BEFORE_CALL_388 .cse4 v_main_~q~0_BEFORE_CALL_370))))) (= (+ .cse5 .cse6 (* v_main_~y~0_BEFORE_CALL_394 (+ .cse5 .cse6))) (+ .cse5 .cse6 (* .cse9 v_main_~xy~0_BEFORE_CALL_200) (* v_main_~yy~0_BEFORE_CALL_190 .cse10))))))) (= c___VERIFIER_assert_~cond 0)) is different from true [2022-03-18 02:51:17,956 WARN L855 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 1)) (forall ((v_main_~q~0_BEFORE_CALL_370 Int) (v_main_~k~0_BEFORE_CALL_255 Int) (v_main_~r~0_BEFORE_CALL_323 Int) (v_main_~y~0_BEFORE_CALL_394 Int) (v_main_~xy~0_BEFORE_CALL_200 Int) (v_main_~x~0_BEFORE_CALL_388 Int) (v_main_~yy~0_BEFORE_CALL_190 Int) (v_main_~s~0_BEFORE_CALL_376 Int) (v_main_~p~0_BEFORE_CALL_303 Int)) (let ((.cse9 (+ v_main_~p~0_BEFORE_CALL_303 (* (- 1) v_main_~k~0_BEFORE_CALL_255 v_main_~q~0_BEFORE_CALL_370))) (.cse10 (+ (* (- 1) (* v_main_~k~0_BEFORE_CALL_255 v_main_~s~0_BEFORE_CALL_376)) v_main_~r~0_BEFORE_CALL_323)) (.cse0 (* v_main_~y~0_BEFORE_CALL_394 v_main_~s~0_BEFORE_CALL_376)) (.cse1 (* v_main_~x~0_BEFORE_CALL_388 v_main_~q~0_BEFORE_CALL_370)) (.cse7 (* v_main_~y~0_BEFORE_CALL_394 v_main_~r~0_BEFORE_CALL_323)) (.cse8 (* v_main_~p~0_BEFORE_CALL_303 v_main_~x~0_BEFORE_CALL_388))) (let ((.cse3 (+ .cse7 .cse8)) (.cse2 (+ .cse0 .cse1)) (.cse5 (* v_main_~y~0_BEFORE_CALL_394 .cse10)) (.cse6 (* .cse9 v_main_~x~0_BEFORE_CALL_388))) (or (not (= (+ .cse0 .cse1 (* v_main_~s~0_BEFORE_CALL_376 v_main_~yy~0_BEFORE_CALL_190) (* v_main_~xy~0_BEFORE_CALL_200 v_main_~q~0_BEFORE_CALL_370)) (+ .cse0 .cse1 (* .cse2 v_main_~y~0_BEFORE_CALL_394)))) (<= (+ .cse0 (* v_main_~k~0_BEFORE_CALL_255 v_main_~y~0_BEFORE_CALL_394 v_main_~s~0_BEFORE_CALL_376) .cse1 (* v_main_~k~0_BEFORE_CALL_255 v_main_~x~0_BEFORE_CALL_388 v_main_~q~0_BEFORE_CALL_370)) .cse3) (= .cse3 (let ((.cse4 (div (+ .cse7 (* (- 1) .cse5) (* (- 1) .cse6) .cse8) .cse2))) (+ (* v_main_~y~0_BEFORE_CALL_394 v_main_~s~0_BEFORE_CALL_376 .cse4) .cse5 .cse6 (* v_main_~x~0_BEFORE_CALL_388 .cse4 v_main_~q~0_BEFORE_CALL_370)))) (= (+ .cse5 .cse6 (* v_main_~y~0_BEFORE_CALL_394 (+ .cse5 .cse6))) (+ .cse5 .cse6 (* .cse9 v_main_~xy~0_BEFORE_CALL_200) (* v_main_~yy~0_BEFORE_CALL_190 .cse10)))))))) is different from true [2022-03-18 02:52:43,769 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse3 (+ c_main_~p~0 (* (- 1) c_main_~q~0 c_main_~k~0))) (.cse2 (+ c_main_~r~0 (* (- 1) (* c_main_~s~0 c_main_~k~0))))) (let ((.cse6 (* .cse2 c_main_~y~0)) (.cse7 (* .cse3 c_main_~x~0))) (let ((.cse4 (* c_main_~q~0 c_main_~xy~0)) (.cse5 (* c_main_~yy~0 c_main_~s~0)) (.cse0 (+ .cse6 .cse7)) (.cse8 (* c_main_~q~0 c_main_~x~0)) (.cse9 (* c_main_~s~0 c_main_~y~0))) (or (not (= c_main_~c~0 .cse0)) (let ((.cse1 (div (+ (* .cse6 2) (* 2 .cse7)) .cse0))) (= (+ (* c_main_~yy~0 .cse1 .cse2) (* .cse1 c_main_~xy~0 .cse3) (* c_main_~q~0 c_main_~x~0 c_main_~y~0) (* c_main_~s~0 c_main_~y~0 c_main_~y~0)) (+ .cse4 .cse5 (* .cse1 .cse3 c_main_~x~0 c_main_~y~0) (* .cse1 .cse2 c_main_~y~0 c_main_~y~0)))) (not (= (+ .cse8 .cse9 (* c_main_~b~0 c_main_~y~0)) (+ .cse4 .cse5 c_main_~b~0))) (<= c_main_~b~0 c_main_~c~0) (not (= (+ .cse6 (* c_main_~xy~0 .cse3) .cse7 (* c_main_~yy~0 .cse2)) (+ .cse6 (* .cse0 c_main_~y~0) .cse7))) (not (= c_main_~b~0 (+ .cse8 .cse9))) (<= (+ (* 3 (* c_main_~p~0 c_main_~x~0)) (* 3 (* c_main_~r~0 c_main_~y~0))) (+ .cse8 .cse9 (* (* c_main_~q~0 c_main_~x~0 c_main_~k~0) 3) (* 3 (* c_main_~s~0 c_main_~y~0 c_main_~k~0)))))))) is different from true [2022-03-18 02:53:08,186 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_main_~q~0 c_main_~xy~0)) (.cse2 (* c_main_~yy~0 c_main_~s~0)) (.cse5 (* c_main_~q~0 c_main_~x~0)) (.cse6 (* c_main_~s~0 c_main_~y~0)) (.cse3 (* c_main_~p~0 c_main_~x~0)) (.cse4 (* c_main_~r~0 c_main_~y~0)) (.cse7 (* c_main_~q~0 c_main_~x~0 c_main_~k~0)) (.cse8 (* c_main_~s~0 c_main_~y~0 c_main_~k~0))) (or (let ((.cse0 (div (+ (* 2 c_main_~r~0 c_main_~y~0) (* 2 c_main_~p~0 c_main_~x~0) (* (- 2) c_main_~q~0 c_main_~x~0 c_main_~k~0) (* (- 2) c_main_~s~0 c_main_~y~0 c_main_~k~0)) (+ (* (- 1) c_main_~q~0 c_main_~x~0 c_main_~k~0) (* (- 1) c_main_~s~0 c_main_~y~0 c_main_~k~0) .cse3 .cse4)))) (= (+ (* c_main_~xy~0 c_main_~p~0 .cse0) (* c_main_~q~0 c_main_~x~0 c_main_~y~0) (* c_main_~q~0 .cse0 c_main_~x~0 c_main_~y~0 c_main_~k~0) (* c_main_~s~0 .cse0 c_main_~y~0 c_main_~y~0 c_main_~k~0) (* c_main_~yy~0 .cse0 c_main_~r~0) (* c_main_~s~0 c_main_~y~0 c_main_~y~0)) (+ .cse1 (* c_main_~q~0 c_main_~xy~0 .cse0 c_main_~k~0) .cse2 (* .cse0 c_main_~r~0 c_main_~y~0 c_main_~y~0) (* c_main_~yy~0 c_main_~s~0 .cse0 c_main_~k~0) (* c_main_~p~0 .cse0 c_main_~x~0 c_main_~y~0)))) (not (= (+ .cse5 .cse6 (* c_main_~b~0 c_main_~y~0)) (+ .cse1 .cse2 c_main_~b~0))) (<= c_main_~b~0 c_main_~c~0) (not (= c_main_~b~0 (+ .cse5 .cse6))) (not (= (+ (* c_main_~q~0 c_main_~xy~0 c_main_~k~0) (* c_main_~yy~0 c_main_~s~0 c_main_~k~0) (* c_main_~p~0 c_main_~x~0 c_main_~y~0) (* c_main_~r~0 c_main_~y~0 c_main_~y~0)) (+ (* c_main_~q~0 c_main_~x~0 c_main_~y~0 c_main_~k~0) (* c_main_~yy~0 c_main_~r~0) (* c_main_~s~0 c_main_~y~0 c_main_~y~0 c_main_~k~0) (* c_main_~xy~0 c_main_~p~0)))) (<= (+ (* 3 .cse3) (* 3 .cse4)) (+ .cse5 .cse6 (* .cse7 3) (* 3 .cse8))) (not (= (+ .cse3 .cse4) (+ .cse7 c_main_~c~0 .cse8))))) is different from true [2022-03-18 02:53:38,311 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse3 (* c_main_~p~0 c_main_~x~0)) (.cse4 (* c_main_~r~0 c_main_~y~0))) (let ((.cse1 (* c_main_~q~0 c_main_~xy~0)) (.cse2 (* c_main_~yy~0 c_main_~s~0)) (.cse6 (* c_main_~q~0 c_main_~x~0)) (.cse7 (* c_main_~s~0 c_main_~y~0)) (.cse5 (+ .cse3 .cse4)) (.cse8 (* c_main_~q~0 c_main_~x~0 c_main_~k~0)) (.cse9 (* c_main_~s~0 c_main_~y~0 c_main_~k~0))) (or (let ((.cse0 (div (+ (* 2 c_main_~r~0 c_main_~y~0) (* 2 c_main_~p~0 c_main_~x~0) (* (- 2) c_main_~q~0 c_main_~x~0 c_main_~k~0) (* (- 2) c_main_~s~0 c_main_~y~0 c_main_~k~0)) (+ (* (- 1) c_main_~q~0 c_main_~x~0 c_main_~k~0) (* (- 1) c_main_~s~0 c_main_~y~0 c_main_~k~0) .cse3 .cse4)))) (= (+ (* c_main_~xy~0 c_main_~p~0 .cse0) (* c_main_~q~0 c_main_~x~0 c_main_~y~0) (* c_main_~q~0 .cse0 c_main_~x~0 c_main_~y~0 c_main_~k~0) (* c_main_~s~0 .cse0 c_main_~y~0 c_main_~y~0 c_main_~k~0) (* c_main_~yy~0 .cse0 c_main_~r~0) (* c_main_~s~0 c_main_~y~0 c_main_~y~0)) (+ .cse1 (* c_main_~q~0 c_main_~xy~0 .cse0 c_main_~k~0) .cse2 (* .cse0 c_main_~r~0 c_main_~y~0 c_main_~y~0) (* c_main_~yy~0 c_main_~s~0 .cse0 c_main_~k~0) (* c_main_~p~0 .cse0 c_main_~x~0 c_main_~y~0)))) (not (= .cse5 c_main_~a~0)) (not (= (+ .cse6 .cse7 (* c_main_~b~0 c_main_~y~0)) (+ .cse1 .cse2 c_main_~b~0))) (<= c_main_~b~0 c_main_~c~0) (not (= c_main_~b~0 (+ .cse6 .cse7))) (not (= (+ (* c_main_~q~0 c_main_~xy~0 c_main_~k~0) (* c_main_~yy~0 c_main_~s~0 c_main_~k~0) (* c_main_~p~0 c_main_~x~0 c_main_~y~0) (* c_main_~r~0 c_main_~y~0 c_main_~y~0)) (+ (* c_main_~q~0 c_main_~x~0 c_main_~y~0 c_main_~k~0) (* c_main_~yy~0 c_main_~r~0) (* c_main_~s~0 c_main_~y~0 c_main_~y~0 c_main_~k~0) (* c_main_~xy~0 c_main_~p~0)))) (<= (+ (* 3 .cse3) (* 3 .cse4)) (+ .cse6 .cse7 (* .cse8 3) (* 3 .cse9))) (not (= .cse5 (+ .cse8 c_main_~c~0 .cse9)))))) is different from true [2022-03-18 02:54:10,116 WARN L232 SmtUtils]: Spent 9.57s on a formula simplification that was a NOOP. DAG size: 16 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)