/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 17:01:55,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 17:01:55,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 17:01:55,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-06 17:01:55,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 17:01:55,737 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 17:01:55,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 17:01:55,739 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-06 17:01:55,744 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 17:01:55,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 17:01:55,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 17:01:55,745 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-06 17:01:55,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 17:01:55,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-06 17:01:55,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 17:01:55,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 17:01:55,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 17:01:55,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 17:01:55,746 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-06 17:01:55,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 17:01:55,746 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 17:01:55,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 17:01:55,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 17:01:55,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 17:01:55,747 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 17:01:55,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 17:01:55,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 17:01:55,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 17:01:55,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-06 17:01:55,747 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-06 17:01:55,747 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-06 17:01:55,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 17:01:55,747 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-06 17:01:55,747 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 17:01:55,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 17:01:55,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 17:01:55,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 17:01:55,972 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 17:01:55,975 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 17:01:55,976 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound1.c [2022-04-06 17:01:56,027 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdcc610c7/deee89bce9664518af48a4e929310d04/FLAG8be1530f1 [2022-04-06 17:01:56,393 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 17:01:56,393 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound1.c [2022-04-06 17:01:56,397 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdcc610c7/deee89bce9664518af48a4e929310d04/FLAG8be1530f1 [2022-04-06 17:01:56,406 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdcc610c7/deee89bce9664518af48a4e929310d04 [2022-04-06 17:01:56,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 17:01:56,409 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-06 17:01:56,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 17:01:56,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 17:01:56,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 17:01:56,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 05:01:56" (1/1) ... [2022-04-06 17:01:56,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eeb3508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:01:56, skipping insertion in model container [2022-04-06 17:01:56,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 05:01:56" (1/1) ... [2022-04-06 17:01:56,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 17:01:56,440 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 17:01:56,584 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/hard-ll_valuebound1.c[538,551] [2022-04-06 17:01:56,602 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 17:01:56,612 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 17:01:56,620 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/hard-ll_valuebound1.c[538,551] [2022-04-06 17:01:56,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 17:01:56,644 INFO L208 MainTranslator]: Completed translation [2022-04-06 17:01:56,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:01:56 WrapperNode [2022-04-06 17:01:56,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 17:01:56,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 17:01:56,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 17:01:56,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 17:01:56,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:01:56" (1/1) ... [2022-04-06 17:01:56,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:01:56" (1/1) ... [2022-04-06 17:01:56,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:01:56" (1/1) ... [2022-04-06 17:01:56,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:01:56" (1/1) ... [2022-04-06 17:01:56,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:01:56" (1/1) ... [2022-04-06 17:01:56,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:01:56" (1/1) ... [2022-04-06 17:01:56,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:01:56" (1/1) ... [2022-04-06 17:01:56,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 17:01:56,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 17:01:56,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 17:01:56,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 17:01:56,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:01:56" (1/1) ... [2022-04-06 17:01:56,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 17:01:56,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 17:01:56,704 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-06 17:01:56,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-06 17:01:56,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 17:01:56,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 17:01:56,739 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 17:01:56,739 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-06 17:01:56,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 17:01:56,739 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 17:01:56,739 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 17:01:56,739 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 17:01:56,739 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 17:01:56,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 17:01:56,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-06 17:01:56,739 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-06 17:01:56,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 17:01:56,739 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 17:01:56,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 17:01:56,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 17:01:56,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 17:01:56,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 17:01:56,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 17:01:56,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 17:01:56,780 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 17:01:56,781 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 17:01:56,880 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 17:01:56,884 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 17:01:56,885 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-06 17:01:56,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 05:01:56 BoogieIcfgContainer [2022-04-06 17:01:56,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 17:01:56,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 17:01:56,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 17:01:56,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 17:01:56,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 05:01:56" (1/3) ... [2022-04-06 17:01:56,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db1c715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 05:01:56, skipping insertion in model container [2022-04-06 17:01:56,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:01:56" (2/3) ... [2022-04-06 17:01:56,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db1c715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 05:01:56, skipping insertion in model container [2022-04-06 17:01:56,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 05:01:56" (3/3) ... [2022-04-06 17:01:56,891 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound1.c [2022-04-06 17:01:56,894 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-06 17:01:56,894 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 17:01:56,922 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 17:01:56,936 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-06 17:01:56,947 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 17:01:56,958 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-06 17:01:56,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-04-06 17:01:56,964 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 17:01:56,964 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 17:01:56,965 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 17:01:56,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 17:01:56,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1784424332, now seen corresponding path program 1 times [2022-04-06 17:01:56,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 17:01:56,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1075399581] [2022-04-06 17:01:56,982 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 17:01:56,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1784424332, now seen corresponding path program 2 times [2022-04-06 17:01:56,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 17:01:56,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686330590] [2022-04-06 17:01:56,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 17:01:56,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 17:01:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:01:57,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 17:01:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:01:57,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 17:01:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:01:57,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 17:01:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:01:57,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 17:01:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:01:57,116 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-06 17:01:57,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 17:01:57,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686330590] [2022-04-06 17:01:57,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686330590] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:01:57,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:01:57,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 17:01:57,119 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 17:01:57,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1075399581] [2022-04-06 17:01:57,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1075399581] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:01:57,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:01:57,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 17:01:57,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407402633] [2022-04-06 17:01:57,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 17:01:57,124 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 17:01:57,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 17:01:57,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 17:01:57,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 17:01:57,143 INFO L87 Difference]: Start difference. First operand has 38 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-06 17:01:57,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 17:01:57,252 INFO L93 Difference]: Finished difference Result 69 states and 110 transitions. [2022-04-06 17:01:57,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 17:01:57,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2022-04-06 17:01:57,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 17:01:57,259 INFO L225 Difference]: With dead ends: 69 [2022-04-06 17:01:57,260 INFO L226 Difference]: Without dead ends: 33 [2022-04-06 17:01:57,263 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 17:01:57,267 INFO L913 BasicCegarLoop]: 38 mSDtfsCounter, 21 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 17:01:57,268 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 41 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 17:01:57,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-04-06 17:01:57,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-04-06 17:01:57,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-06 17:01:57,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2022-04-06 17:01:57,305 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 28 [2022-04-06 17:01:57,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 17:01:57,306 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2022-04-06 17:01:57,306 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-06 17:01:57,306 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2022-04-06 17:01:57,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-04-06 17:01:57,308 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 17:01:57,309 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 17:01:57,309 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 17:01:57,309 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 17:01:57,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 17:01:57,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1361835634, now seen corresponding path program 1 times [2022-04-06 17:01:57,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 17:01:57,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [383128452] [2022-04-06 17:01:57,315 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 17:01:57,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1361835634, now seen corresponding path program 2 times [2022-04-06 17:01:57,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 17:01:57,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040059169] [2022-04-06 17:01:57,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 17:01:57,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 17:01:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:01:57,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 17:01:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:01:57,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 17:01:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:01:57,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 17:01:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:01:57,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 17:01:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:01:57,436 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-06 17:01:57,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 17:01:57,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040059169] [2022-04-06 17:01:57,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040059169] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:01:57,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:01:57,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 17:01:57,437 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 17:01:57,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [383128452] [2022-04-06 17:01:57,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [383128452] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:01:57,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:01:57,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 17:01:57,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490124804] [2022-04-06 17:01:57,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 17:01:57,438 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 17:01:57,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 17:01:57,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 17:01:57,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 17:01:57,439 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-06 17:01:57,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 17:01:57,570 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2022-04-06 17:01:57,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 17:01:57,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2022-04-06 17:01:57,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 17:01:57,571 INFO L225 Difference]: With dead ends: 46 [2022-04-06 17:01:57,571 INFO L226 Difference]: Without dead ends: 44 [2022-04-06 17:01:57,572 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-06 17:01:57,573 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 38 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 17:01:57,573 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 48 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 17:01:57,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-04-06 17:01:57,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-04-06 17:01:57,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-06 17:01:57,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2022-04-06 17:01:57,581 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 28 [2022-04-06 17:01:57,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 17:01:57,582 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2022-04-06 17:01:57,582 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-06 17:01:57,582 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2022-04-06 17:01:57,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-06 17:01:57,583 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 17:01:57,583 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 17:01:57,583 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 17:01:57,583 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 17:01:57,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 17:01:57,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1382067636, now seen corresponding path program 1 times [2022-04-06 17:01:57,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 17:01:57,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2026260613] [2022-04-06 17:01:57,584 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 17:01:57,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1382067636, now seen corresponding path program 2 times [2022-04-06 17:01:57,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 17:01:57,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232794577] [2022-04-06 17:01:57,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 17:01:57,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 17:01:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:01:57,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 17:01:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:01:57,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 17:01:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:01:57,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 17:01:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:01:57,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 17:01:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:01:57,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-06 17:01:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:01:57,726 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-06 17:01:57,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 17:01:57,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232794577] [2022-04-06 17:01:57,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232794577] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:01:57,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:01:57,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 17:01:57,727 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 17:01:57,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2026260613] [2022-04-06 17:01:57,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2026260613] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:01:57,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:01:57,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 17:01:57,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870711882] [2022-04-06 17:01:57,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 17:01:57,728 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 17:01:57,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 17:01:57,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 17:01:57,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 17:01:57,731 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 17:01:57,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 17:01:57,908 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2022-04-06 17:01:57,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 17:01:57,909 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-04-06 17:01:57,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 17:01:57,911 INFO L225 Difference]: With dead ends: 50 [2022-04-06 17:01:57,911 INFO L226 Difference]: Without dead ends: 48 [2022-04-06 17:01:57,912 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-06 17:01:57,914 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 17:01:57,918 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 48 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 17:01:57,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-04-06 17:01:57,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2022-04-06 17:01:57,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-06 17:01:57,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2022-04-06 17:01:57,939 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 33 [2022-04-06 17:01:57,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 17:01:57,939 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2022-04-06 17:01:57,940 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 17:01:57,940 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2022-04-06 17:01:57,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-06 17:01:57,940 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 17:01:57,941 INFO L499 BasicCegarLoop]: trace histogram [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] [2022-04-06 17:01:57,941 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-06 17:01:57,941 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 17:01:57,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 17:01:57,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1455208590, now seen corresponding path program 1 times [2022-04-06 17:01:57,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 17:01:57,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2099659617] [2022-04-06 17:01:57,942 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 17:01:57,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1455208590, now seen corresponding path program 2 times [2022-04-06 17:01:57,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 17:01:57,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488109847] [2022-04-06 17:01:57,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 17:01:57,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 17:01:57,971 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 17:01:57,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2030935368] [2022-04-06 17:01:57,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 17:01:57,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:01:57,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 17:01:57,973 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 17:01:57,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 17:01:58,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 17:01:58,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 17:01:58,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-06 17:01:58,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 17:01:58,324 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-04-06 17:01:58,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 17:01:58,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 17:01:58,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488109847] [2022-04-06 17:01:58,325 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 17:01:58,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030935368] [2022-04-06 17:01:58,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030935368] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:01:58,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:01:58,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 17:01:58,326 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 17:01:58,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2099659617] [2022-04-06 17:01:58,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2099659617] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:01:58,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:01:58,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 17:01:58,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347500530] [2022-04-06 17:01:58,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 17:01:58,327 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 17:01:58,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 17:01:58,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 17:01:58,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-04-06 17:01:58,327 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-04-06 17:01:58,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 17:01:58,431 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2022-04-06 17:01:58,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 17:01:58,431 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 38 [2022-04-06 17:01:58,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 17:01:58,432 INFO L225 Difference]: With dead ends: 69 [2022-04-06 17:01:58,432 INFO L226 Difference]: Without dead ends: 55 [2022-04-06 17:01:58,433 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-04-06 17:01:58,433 INFO L913 BasicCegarLoop]: 40 mSDtfsCounter, 23 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 17:01:58,433 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 194 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 17:01:58,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-04-06 17:01:58,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-04-06 17:01:58,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-04-06 17:01:58,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2022-04-06 17:01:58,443 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 38 [2022-04-06 17:01:58,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 17:01:58,444 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2022-04-06 17:01:58,444 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-04-06 17:01:58,444 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2022-04-06 17:01:58,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-04-06 17:01:58,444 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 17:01:58,445 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 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] [2022-04-06 17:01:58,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-06 17:01:58,662 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:01:58,662 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 17:01:58,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 17:01:58,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1688067263, now seen corresponding path program 1 times [2022-04-06 17:01:58,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 17:01:58,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [701916632] [2022-04-06 17:01:58,663 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 17:01:58,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1688067263, now seen corresponding path program 2 times [2022-04-06 17:01:58,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 17:01:58,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752955232] [2022-04-06 17:01:58,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 17:01:58,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 17:01:58,671 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 17:01:58,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [386247985] [2022-04-06 17:01:58,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 17:01:58,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:01:58,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 17:01:58,672 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 17:01:58,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-06 17:01:58,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 17:01:58,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 17:01:58,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-06 17:01:58,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 17:01:59,018 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-04-06 17:01:59,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 17:01:59,225 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-04-06 17:01:59,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 17:01:59,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752955232] [2022-04-06 17:01:59,226 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 17:01:59,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386247985] [2022-04-06 17:01:59,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386247985] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 17:01:59,226 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 17:01:59,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-04-06 17:01:59,227 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 17:01:59,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [701916632] [2022-04-06 17:01:59,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [701916632] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:01:59,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:01:59,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 17:01:59,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843002953] [2022-04-06 17:01:59,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 17:01:59,229 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 17:01:59,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 17:01:59,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 17:01:59,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-04-06 17:01:59,231 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-04-06 17:01:59,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 17:01:59,349 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2022-04-06 17:01:59,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 17:01:59,349 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 45 [2022-04-06 17:01:59,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 17:01:59,353 INFO L225 Difference]: With dead ends: 65 [2022-04-06 17:01:59,353 INFO L226 Difference]: Without dead ends: 54 [2022-04-06 17:01:59,353 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-04-06 17:01:59,357 INFO L913 BasicCegarLoop]: 37 mSDtfsCounter, 24 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 17:01:59,357 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 163 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 17:01:59,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-04-06 17:01:59,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-04-06 17:01:59,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 32 states have internal predecessors, (35), 15 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-04-06 17:01:59,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2022-04-06 17:01:59,370 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 45 [2022-04-06 17:01:59,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 17:01:59,371 INFO L478 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2022-04-06 17:01:59,371 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-04-06 17:01:59,372 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2022-04-06 17:01:59,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-06 17:01:59,375 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 17:01:59,376 INFO L499 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 17:01:59,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-06 17:01:59,593 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:01:59,594 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 17:01:59,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 17:01:59,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1471734606, now seen corresponding path program 1 times [2022-04-06 17:01:59,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 17:01:59,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [478662049] [2022-04-06 17:01:59,594 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 17:01:59,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1471734606, now seen corresponding path program 2 times [2022-04-06 17:01:59,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 17:01:59,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906926106] [2022-04-06 17:01:59,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 17:01:59,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 17:01:59,610 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 17:01:59,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [668855132] [2022-04-06 17:01:59,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 17:01:59,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:01:59,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 17:01:59,614 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 17:01:59,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-06 17:01:59,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 17:01:59,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 17:01:59,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 21 conjunts are in the unsatisfiable core [2022-04-06 17:01:59,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 17:01:59,875 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-04-06 17:01:59,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 17:02:00,000 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-04-06 17:02:00,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 17:02:00,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906926106] [2022-04-06 17:02:00,000 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 17:02:00,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668855132] [2022-04-06 17:02:00,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668855132] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-06 17:02:00,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 17:02:00,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2022-04-06 17:02:00,001 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 17:02:00,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [478662049] [2022-04-06 17:02:00,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [478662049] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:02:00,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:02:00,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 17:02:00,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675518178] [2022-04-06 17:02:00,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 17:02:00,002 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 17:02:00,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:00,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 17:02:00,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-04-06 17:02:00,002 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 17:02:00,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 17:02:00,050 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2022-04-06 17:02:00,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 17:02:00,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 55 [2022-04-06 17:02:00,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 17:02:00,051 INFO L225 Difference]: With dead ends: 66 [2022-04-06 17:02:00,051 INFO L226 Difference]: Without dead ends: 64 [2022-04-06 17:02:00,052 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-04-06 17:02:00,052 INFO L913 BasicCegarLoop]: 41 mSDtfsCounter, 8 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 17:02:00,052 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 129 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 17:02:00,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-04-06 17:02:00,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2022-04-06 17:02:00,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 37 states have internal predecessors, (39), 17 states have call successors, (17), 9 states have call predecessors, (17), 8 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-04-06 17:02:00,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2022-04-06 17:02:00,060 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 55 [2022-04-06 17:02:00,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 17:02:00,060 INFO L478 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2022-04-06 17:02:00,060 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 17:02:00,060 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2022-04-06 17:02:00,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-04-06 17:02:00,061 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 17:02:00,061 INFO L499 BasicCegarLoop]: trace histogram [7, 6, 6, 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] [2022-04-06 17:02:00,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-06 17:02:00,275 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:02:00,276 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 17:02:00,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 17:02:00,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1784683007, now seen corresponding path program 1 times [2022-04-06 17:02:00,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:00,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [497425764] [2022-04-06 17:02:00,276 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 17:02:00,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1784683007, now seen corresponding path program 2 times [2022-04-06 17:02:00,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 17:02:00,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143918928] [2022-04-06 17:02:00,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 17:02:00,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 17:02:00,283 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 17:02:00,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [252151804] [2022-04-06 17:02:00,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 17:02:00,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:02:00,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 17:02:00,285 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 17:02:00,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-06 17:02:00,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 17:02:00,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 17:02:00,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-06 17:02:00,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 17:02:00,670 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 15 proven. 8 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-04-06 17:02:00,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 17:02:00,850 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-04-06 17:02:00,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 17:02:00,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143918928] [2022-04-06 17:02:00,850 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 17:02:00,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252151804] [2022-04-06 17:02:00,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252151804] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 17:02:00,850 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 17:02:00,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 13 [2022-04-06 17:02:00,851 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 17:02:00,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [497425764] [2022-04-06 17:02:00,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [497425764] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:02:00,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:02:00,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 17:02:00,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829097547] [2022-04-06 17:02:00,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 17:02:00,853 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 17:02:00,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:00,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 17:02:00,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-04-06 17:02:00,853 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-04-06 17:02:01,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 17:02:01,041 INFO L93 Difference]: Finished difference Result 90 states and 108 transitions. [2022-04-06 17:02:01,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 17:02:01,042 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 62 [2022-04-06 17:02:01,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 17:02:01,044 INFO L225 Difference]: With dead ends: 90 [2022-04-06 17:02:01,044 INFO L226 Difference]: Without dead ends: 88 [2022-04-06 17:02:01,044 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-04-06 17:02:01,045 INFO L913 BasicCegarLoop]: 38 mSDtfsCounter, 28 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 17:02:01,045 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 160 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 17:02:01,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-04-06 17:02:01,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2022-04-06 17:02:01,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 50 states have (on average 1.14) internal successors, (57), 54 states have internal predecessors, (57), 25 states have call successors, (25), 12 states have call predecessors, (25), 11 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2022-04-06 17:02:01,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 105 transitions. [2022-04-06 17:02:01,065 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 105 transitions. Word has length 62 [2022-04-06 17:02:01,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 17:02:01,065 INFO L478 AbstractCegarLoop]: Abstraction has 87 states and 105 transitions. [2022-04-06 17:02:01,065 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-04-06 17:02:01,065 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 105 transitions. [2022-04-06 17:02:01,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-04-06 17:02:01,066 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 17:02:01,066 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 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] [2022-04-06 17:02:01,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-06 17:02:01,279 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:02:01,279 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 17:02:01,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 17:02:01,280 INFO L85 PathProgramCache]: Analyzing trace with hash 680531353, now seen corresponding path program 1 times [2022-04-06 17:02:01,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:01,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1057999367] [2022-04-06 17:02:01,280 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 17:02:01,280 INFO L85 PathProgramCache]: Analyzing trace with hash 680531353, now seen corresponding path program 2 times [2022-04-06 17:02:01,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 17:02:01,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364430429] [2022-04-06 17:02:01,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 17:02:01,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 17:02:01,287 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 17:02:01,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216708040] [2022-04-06 17:02:01,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 17:02:01,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:02:01,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 17:02:01,289 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 17:02:01,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-06 17:02:01,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 17:02:01,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 17:02:01,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 30 conjunts are in the unsatisfiable core [2022-04-06 17:02:01,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 17:02:01,903 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-04-06 17:02:01,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 17:02:02,944 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-04-06 17:02:02,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 17:02:02,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364430429] [2022-04-06 17:02:02,945 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 17:02:02,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216708040] [2022-04-06 17:02:02,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216708040] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 17:02:02,945 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 17:02:02,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 17 [2022-04-06 17:02:02,945 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 17:02:02,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1057999367] [2022-04-06 17:02:02,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1057999367] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:02:02,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:02:02,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 17:02:02,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136886351] [2022-04-06 17:02:02,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 17:02:02,946 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 17:02:02,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:02,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 17:02:02,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-04-06 17:02:02,947 INFO L87 Difference]: Start difference. First operand 87 states and 105 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 6 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) [2022-04-06 17:02:03,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 17:02:03,210 INFO L93 Difference]: Finished difference Result 121 states and 148 transitions. [2022-04-06 17:02:03,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 17:02:03,211 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 6 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 [2022-04-06 17:02:03,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 17:02:03,212 INFO L225 Difference]: With dead ends: 121 [2022-04-06 17:02:03,212 INFO L226 Difference]: Without dead ends: 98 [2022-04-06 17:02:03,213 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-04-06 17:02:03,213 INFO L913 BasicCegarLoop]: 45 mSDtfsCounter, 23 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 17:02:03,213 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 227 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 17:02:03,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-04-06 17:02:03,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2022-04-06 17:02:03,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 58 states have (on average 1.1206896551724137) internal successors, (65), 60 states have internal predecessors, (65), 24 states have call successors, (24), 14 states have call predecessors, (24), 13 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-04-06 17:02:03,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2022-04-06 17:02:03,223 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 75 [2022-04-06 17:02:03,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 17:02:03,224 INFO L478 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2022-04-06 17:02:03,224 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 6 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) [2022-04-06 17:02:03,224 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2022-04-06 17:02:03,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-04-06 17:02:03,224 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 17:02:03,224 INFO L499 BasicCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 17:02:03,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-06 17:02:03,439 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:02:03,440 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 17:02:03,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 17:02:03,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1211630783, now seen corresponding path program 3 times [2022-04-06 17:02:03,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:03,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [30919832] [2022-04-06 17:02:03,440 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 17:02:03,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1211630783, now seen corresponding path program 4 times [2022-04-06 17:02:03,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 17:02:03,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183368852] [2022-04-06 17:02:03,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 17:02:03,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 17:02:03,447 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 17:02:03,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [135662710] [2022-04-06 17:02:03,447 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 17:02:03,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:02:03,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 17:02:03,448 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 17:02:03,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-06 17:02:03,487 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 17:02:03,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 17:02:03,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-06 17:02:03,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 17:02:03,796 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 23 proven. 16 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-04-06 17:02:03,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 17:02:04,003 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 18 proven. 21 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-04-06 17:02:04,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 17:02:04,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183368852] [2022-04-06 17:02:04,004 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 17:02:04,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135662710] [2022-04-06 17:02:04,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135662710] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 17:02:04,004 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 17:02:04,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-04-06 17:02:04,004 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 17:02:04,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [30919832] [2022-04-06 17:02:04,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [30919832] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:02:04,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:02:04,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 17:02:04,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440650138] [2022-04-06 17:02:04,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 17:02:04,005 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 17:02:04,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:04,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 17:02:04,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-04-06 17:02:04,006 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 6 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) [2022-04-06 17:02:04,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 17:02:04,173 INFO L93 Difference]: Finished difference Result 113 states and 131 transitions. [2022-04-06 17:02:04,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 17:02:04,174 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 6 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 79 [2022-04-06 17:02:04,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 17:02:04,174 INFO L225 Difference]: With dead ends: 113 [2022-04-06 17:02:04,174 INFO L226 Difference]: Without dead ends: 76 [2022-04-06 17:02:04,175 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-04-06 17:02:04,175 INFO L913 BasicCegarLoop]: 49 mSDtfsCounter, 16 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 17:02:04,175 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 179 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 17:02:04,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-04-06 17:02:04,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-04-06 17:02:04,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 46 states have (on average 1.108695652173913) internal successors, (51), 47 states have internal predecessors, (51), 19 states have call successors, (19), 11 states have call predecessors, (19), 10 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-04-06 17:02:04,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2022-04-06 17:02:04,186 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 79 [2022-04-06 17:02:04,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 17:02:04,186 INFO L478 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2022-04-06 17:02:04,186 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 6 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) [2022-04-06 17:02:04,186 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2022-04-06 17:02:04,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-04-06 17:02:04,187 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 17:02:04,187 INFO L499 BasicCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 2, 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] [2022-04-06 17:02:04,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-06 17:02:04,404 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:02:04,404 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 17:02:04,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 17:02:04,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1566820819, now seen corresponding path program 3 times [2022-04-06 17:02:04,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:04,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1582952468] [2022-04-06 17:02:04,405 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 17:02:04,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1566820819, now seen corresponding path program 4 times [2022-04-06 17:02:04,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 17:02:04,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386413148] [2022-04-06 17:02:04,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 17:02:04,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 17:02:04,411 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 17:02:04,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422315788] [2022-04-06 17:02:04,412 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 17:02:04,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:02:04,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 17:02:04,413 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 17:02:04,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-06 17:02:04,459 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 17:02:04,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 17:02:04,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 22 conjunts are in the unsatisfiable core [2022-04-06 17:02:04,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 17:02:04,775 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 21 proven. 11 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-04-06 17:02:04,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 17:02:06,631 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-04-06 17:02:06,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 17:02:06,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386413148] [2022-04-06 17:02:06,632 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 17:02:06,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422315788] [2022-04-06 17:02:06,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422315788] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 17:02:06,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 17:02:06,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 15 [2022-04-06 17:02:06,632 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 17:02:06,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1582952468] [2022-04-06 17:02:06,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1582952468] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:02:06,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:02:06,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 17:02:06,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141744768] [2022-04-06 17:02:06,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 17:02:06,633 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 17:02:06,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:06,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 17:02:06,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-04-06 17:02:06,634 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-04-06 17:02:06,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 17:02:06,845 INFO L93 Difference]: Finished difference Result 96 states and 109 transitions. [2022-04-06 17:02:06,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 17:02:06,846 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), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 80 [2022-04-06 17:02:06,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 17:02:06,846 INFO L225 Difference]: With dead ends: 96 [2022-04-06 17:02:06,846 INFO L226 Difference]: Without dead ends: 71 [2022-04-06 17:02:06,847 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-04-06 17:02:06,847 INFO L913 BasicCegarLoop]: 41 mSDtfsCounter, 16 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 17:02:06,847 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 223 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 17:02:06,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-04-06 17:02:06,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-04-06 17:02:06,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 44 states have (on average 1.0) internal successors, (44), 44 states have internal predecessors, (44), 16 states have call successors, (16), 12 states have call predecessors, (16), 10 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-04-06 17:02:06,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2022-04-06 17:02:06,855 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 80 [2022-04-06 17:02:06,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 17:02:06,856 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2022-04-06 17:02:06,856 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), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-04-06 17:02:06,856 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2022-04-06 17:02:06,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-04-06 17:02:06,856 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 17:02:06,856 INFO L499 BasicCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 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] [2022-04-06 17:02:06,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-04-06 17:02:07,059 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:02:07,060 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 17:02:07,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 17:02:07,060 INFO L85 PathProgramCache]: Analyzing trace with hash -815356955, now seen corresponding path program 1 times [2022-04-06 17:02:07,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:07,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1432893375] [2022-04-06 17:02:07,061 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 17:02:07,061 INFO L85 PathProgramCache]: Analyzing trace with hash -815356955, now seen corresponding path program 2 times [2022-04-06 17:02:07,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 17:02:07,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825289271] [2022-04-06 17:02:07,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 17:02:07,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 17:02:07,068 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 17:02:07,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1930910558] [2022-04-06 17:02:07,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 17:02:07,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:02:07,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 17:02:07,078 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 17:02:07,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-06 17:02:07,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 17:02:07,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 17:02:07,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 32 conjunts are in the unsatisfiable core [2022-04-06 17:02:07,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 17:02:09,755 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-04-06 17:02:09,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 17:02:12,874 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-04-06 17:02:12,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 17:02:12,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825289271] [2022-04-06 17:02:12,874 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 17:02:12,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930910558] [2022-04-06 17:02:12,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930910558] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 17:02:12,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 17:02:12,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 18 [2022-04-06 17:02:12,875 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 17:02:12,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1432893375] [2022-04-06 17:02:12,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1432893375] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:02:12,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:02:12,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 17:02:12,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008970964] [2022-04-06 17:02:12,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 17:02:12,876 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 17:02:12,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:12,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 17:02:12,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2022-04-06 17:02:12,876 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-04-06 17:02:13,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 17:02:13,352 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2022-04-06 17:02:13,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 17:02:13,352 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 86 [2022-04-06 17:02:13,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 17:02:13,352 INFO L225 Difference]: With dead ends: 71 [2022-04-06 17:02:13,352 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 17:02:13,353 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 153 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2022-04-06 17:02:13,353 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 15 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 17:02:13,353 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 175 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 174 Invalid, 0 Unknown, 93 Unchecked, 0.3s Time] [2022-04-06 17:02:13,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 17:02:13,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 17:02:13,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-06 17:02:13,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 17:02:13,354 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 86 [2022-04-06 17:02:13,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 17:02:13,354 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 17:02:13,354 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-04-06 17:02:13,354 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 17:02:13,354 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 17:02:13,356 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 17:02:13,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-04-06 17:02:13,559 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,SelfDestructingSolverStorable10 [2022-04-06 17:02:13,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-06 17:02:16,754 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 8) no Hoare annotation was computed. [2022-04-06 17:02:16,754 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 8) no Hoare annotation was computed. [2022-04-06 17:02:16,754 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 8) no Hoare annotation was computed. [2022-04-06 17:02:16,754 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 11 13) the Hoare annotation is: true [2022-04-06 17:02:16,754 INFO L878 garLoopResultBuilder]: At program point L12(line 12) the Hoare annotation is: (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|) [2022-04-06 17:02:16,754 INFO L878 garLoopResultBuilder]: At program point L12-2(lines 11 13) the Hoare annotation is: (and (not (= |assume_abort_if_not_#in~cond| 0)) (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)) [2022-04-06 17:02:16,754 INFO L878 garLoopResultBuilder]: At program point assume_abort_if_notEXIT(lines 11 13) the Hoare annotation is: (and (not (= |assume_abort_if_not_#in~cond| 0)) (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)) [2022-04-06 17:02:16,754 INFO L878 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (mod main_~B~0 4294967296))) (and (<= (mod main_~A~0 4294967296) 1) (<= .cse0 1) (<= 1 .cse0))) [2022-04-06 17:02:16,754 INFO L878 garLoopResultBuilder]: At program point L60(line 60) the Hoare annotation is: (let ((.cse0 (mod main_~B~0 4294967296))) (and (= main_~d~0 .cse0) (<= .cse0 1) (<= 1 .cse0) (= main_~p~0 1))) [2022-04-06 17:02:16,755 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 22 63) the Hoare annotation is: true [2022-04-06 17:02:16,755 INFO L878 garLoopResultBuilder]: At program point L54(lines 54 57) the Hoare annotation is: (let ((.cse6 (mod main_~B~0 4294967296))) (and (= (mod main_~A~0 4294967296) main_~r~0) (exists ((aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_div_v_main_~d~0_41_36 Int) (aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 Int)) (let ((.cse5 (div (+ (- 1) (* (- 1) main_~r~0)) (- 2)))) (let ((.cse0 (* (- 2) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse1 (* 8589934592 aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse2 (* (- 2) .cse5)) (.cse4 (+ .cse5 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse3 (* aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 4294967296))) (and (< aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 (+ (div (+ .cse0 .cse1 2 (* main_~d~0 2) .cse2) 8589934592) 1)) (<= aux_div_v_main_~d~0_41_36 main_~r~0) (<= .cse3 .cse4) (< aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 (+ (div (+ .cse0 .cse1 (* aux_div_v_main_~d~0_41_36 2) 1 .cse2) 8589934592) 1)) (<= (+ .cse3 main_~d~0) (+ (* 4294967296 aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103) .cse5 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (<= 0 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247) (<= .cse4 (+ .cse3 1)))))) (< main_~r~0 (+ (* main_~d~0 2) 1)) (<= 1 .cse6) (= main_~q~0 0) (<= .cse6 main_~r~0) (= main_~p~0 1))) [2022-04-06 17:02:16,755 INFO L878 garLoopResultBuilder]: At program point L54-2(lines 22 63) the Hoare annotation is: (let ((.cse8 (mod main_~B~0 4294967296))) (let ((.cse7 (<= .cse8 1)) (.cse10 (= main_~q~0 0)) (.cse6 (mod main_~A~0 4294967296)) (.cse9 (= main_~p~0 1))) (or (and (exists ((aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_div_v_main_~d~0_41_36 Int) (aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 Int)) (let ((.cse1 (div (+ (- 1) (* (- 1) main_~d~0) (* (- 1) main_~r~0)) (- 2)))) (let ((.cse2 (+ .cse1 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse0 (* aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 4294967296)) (.cse3 (* (- 2) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse4 (* 8589934592 aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse5 (* .cse1 (- 2)))) (and (<= aux_div_v_main_~d~0_41_36 (+ main_~d~0 main_~r~0)) (<= (+ .cse0 main_~d~0) (+ .cse1 (* 4294967296 aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (<= .cse0 .cse2) (<= .cse2 (+ .cse0 1)) (< aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 (+ (div (+ .cse3 .cse4 (* aux_div_v_main_~d~0_41_36 2) .cse5 1) 8589934592) 1)) (< aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 (+ (div (+ .cse3 .cse4 2 .cse5 (* main_~d~0 2)) 8589934592) 1)) (<= 0 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247))))) (= (+ main_~d~0 main_~r~0) .cse6) .cse7 (< main_~r~0 (+ main_~d~0 1)) (= main_~q~0 1) (< .cse6 (* 2 .cse8)) .cse9) (and (= .cse6 main_~r~0) (= main_~p~0 2) (<= 1 .cse8) .cse10 (<= (div (* (- 1) main_~d~0) (- 2)) main_~r~0) (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)) (< .cse8 main_~d~0)) (and (= main_~d~0 .cse8) (< main_~r~0 .cse8) .cse7 .cse10 (<= .cse6 main_~r~0) .cse9)))) [2022-04-06 17:02:16,755 INFO L878 garLoopResultBuilder]: At program point L48(lines 46 58) the Hoare annotation is: (let ((.cse1 (mod main_~B~0 4294967296))) (let ((.cse9 (<= .cse1 1)) (.cse2 (= main_~q~0 0)) (.cse0 (mod main_~A~0 4294967296)) (.cse10 (= main_~p~0 1))) (or (and (= .cse0 main_~r~0) (< main_~r~0 (* 2 .cse1)) (= main_~p~0 2) .cse2 (<= (div (* (- 1) main_~d~0) (- 2)) main_~r~0) (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)) (< .cse1 main_~d~0)) (and (exists ((aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_div_v_main_~d~0_41_36 Int) (aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 Int)) (let ((.cse4 (div (+ (- 1) (* (- 1) main_~d~0) (* (- 1) main_~r~0)) (- 2)))) (let ((.cse5 (+ .cse4 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse3 (* aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 4294967296)) (.cse6 (* (- 2) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse7 (* 8589934592 aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse8 (* .cse4 (- 2)))) (and (<= aux_div_v_main_~d~0_41_36 (+ main_~d~0 main_~r~0)) (<= (+ .cse3 main_~d~0) (+ .cse4 (* 4294967296 aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (<= .cse3 .cse5) (<= .cse5 (+ .cse3 1)) (< aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 (+ (div (+ .cse6 .cse7 (* aux_div_v_main_~d~0_41_36 2) .cse8 1) 8589934592) 1)) (< aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 (+ (div (+ .cse6 .cse7 2 .cse8 (* main_~d~0 2)) 8589934592) 1)) (<= 0 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247))))) (< 0 .cse1) (= (+ main_~d~0 main_~r~0) .cse0) .cse9 (< main_~r~0 (+ main_~d~0 1)) (= main_~q~0 1) .cse10) (and (= main_~d~0 .cse1) (< main_~r~0 .cse1) .cse9 .cse2 (<= .cse0 main_~r~0) .cse10)))) [2022-04-06 17:02:16,755 INFO L878 garLoopResultBuilder]: At program point L46-1(lines 46 58) the Hoare annotation is: (let ((.cse0 (mod main_~B~0 4294967296)) (.cse1 (mod main_~A~0 4294967296)) (.cse2 (= main_~p~0 1))) (or (and (= main_~d~0 .cse0) (< main_~r~0 .cse0) (<= .cse0 1) (= main_~q~0 0) (<= .cse1 main_~r~0) .cse2) (and (= .cse1 (+ main_~r~0 .cse0)) (exists ((aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_div_v_main_~d~0_41_36 Int) (aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 Int)) (let ((.cse4 (div (+ (- 1) (* (- 1) main_~d~0) (* (- 1) main_~r~0)) (- 2)))) (let ((.cse5 (+ .cse4 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse3 (* aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 4294967296)) (.cse6 (* (- 2) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse7 (* 8589934592 aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse8 (* .cse4 (- 2)))) (and (<= aux_div_v_main_~d~0_41_36 (+ main_~d~0 main_~r~0)) (<= (+ .cse3 main_~d~0) (+ .cse4 (* 4294967296 aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (<= .cse3 .cse5) (<= .cse5 (+ .cse3 1)) (< aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 (+ (div (+ .cse6 .cse7 (* aux_div_v_main_~d~0_41_36 2) .cse8 1) 8589934592) 1)) (< aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 (+ (div (+ .cse6 .cse7 2 .cse8 (* main_~d~0 2)) 8589934592) 1)) (<= 0 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247))))) (= (+ main_~d~0 main_~r~0) .cse1) (< main_~r~0 (+ main_~d~0 1)) (= main_~q~0 1) .cse2))) [2022-04-06 17:02:16,755 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 22 63) the Hoare annotation is: true [2022-04-06 17:02:16,755 INFO L878 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse10 (* (- 1) main_~d~0))) (let ((.cse6 (div .cse10 (- 2))) (.cse7 (mod main_~B~0 4294967296))) (let ((.cse0 (= (mod main_~A~0 4294967296) main_~r~0)) (.cse1 (= main_~d~0 (* main_~p~0 .cse7))) (.cse2 (<= 0 .cse6)) (.cse9 (<= .cse7 1)) (.cse3 (<= 1 .cse7)) (.cse4 (= (mod main_~d~0 2) 0)) (.cse5 (= main_~q~0 0)) (.cse8 (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= .cse6 main_~r~0) (<= .cse7 main_~r~0) .cse8) (and .cse0 .cse1 .cse9 .cse3 .cse5 .cse8 (= main_~p~0 1)) (and (= main_~A~0 (+ main_~r~0 (* (div main_~A~0 4294967296) 4294967296))) (<= (div main_~r~0 (- 2)) (div .cse10 4)) .cse1 .cse2 .cse9 .cse3 .cse4 .cse5 .cse8))))) [2022-04-06 17:02:16,755 INFO L878 garLoopResultBuilder]: At program point L36-2(lines 36 44) the Hoare annotation is: (let ((.cse10 (* (- 1) main_~d~0))) (let ((.cse6 (div .cse10 (- 2))) (.cse7 (mod main_~B~0 4294967296))) (let ((.cse0 (= (mod main_~A~0 4294967296) main_~r~0)) (.cse1 (= main_~d~0 (* main_~p~0 .cse7))) (.cse2 (<= 0 .cse6)) (.cse9 (<= .cse7 1)) (.cse3 (<= 1 .cse7)) (.cse4 (= (mod main_~d~0 2) 0)) (.cse5 (= main_~q~0 0)) (.cse8 (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= .cse6 main_~r~0) (<= .cse7 main_~r~0) .cse8) (and .cse0 .cse1 .cse9 .cse3 .cse5 .cse8 (= main_~p~0 1)) (and (= main_~A~0 (+ main_~r~0 (* (div main_~A~0 4294967296) 4294967296))) (<= (div main_~r~0 (- 2)) (div .cse10 4)) .cse1 .cse2 .cse9 .cse3 .cse4 .cse5 .cse8))))) [2022-04-06 17:02:16,755 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 22 63) the Hoare annotation is: true [2022-04-06 17:02:16,755 INFO L885 garLoopResultBuilder]: At program point L61(line 61) the Hoare annotation is: true [2022-04-06 17:02:16,755 INFO L878 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (<= (mod main_~A~0 4294967296) 1) [2022-04-06 17:02:16,756 INFO L878 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (and (<= (mod main_~A~0 4294967296) 1) (<= (mod main_~B~0 4294967296) 1)) [2022-04-06 17:02:16,756 INFO L885 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: true [2022-04-06 17:02:16,756 INFO L878 garLoopResultBuilder]: At program point L26-1(line 26) the Hoare annotation is: (<= (mod main_~A~0 4294967296) 1) [2022-04-06 17:02:16,756 INFO L878 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse8 (mod main_~B~0 4294967296))) (let ((.cse7 (<= .cse8 1)) (.cse10 (= main_~q~0 0)) (.cse6 (mod main_~A~0 4294967296)) (.cse9 (= main_~p~0 1))) (or (and (exists ((aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_div_v_main_~d~0_41_36 Int) (aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 Int)) (let ((.cse1 (div (+ (- 1) (* (- 1) main_~d~0) (* (- 1) main_~r~0)) (- 2)))) (let ((.cse2 (+ .cse1 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse0 (* aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 4294967296)) (.cse3 (* (- 2) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse4 (* 8589934592 aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse5 (* .cse1 (- 2)))) (and (<= aux_div_v_main_~d~0_41_36 (+ main_~d~0 main_~r~0)) (<= (+ .cse0 main_~d~0) (+ .cse1 (* 4294967296 aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (<= .cse0 .cse2) (<= .cse2 (+ .cse0 1)) (< aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 (+ (div (+ .cse3 .cse4 (* aux_div_v_main_~d~0_41_36 2) .cse5 1) 8589934592) 1)) (< aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 (+ (div (+ .cse3 .cse4 2 .cse5 (* main_~d~0 2)) 8589934592) 1)) (<= 0 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247))))) (= (+ main_~d~0 main_~r~0) .cse6) .cse7 (< main_~r~0 (+ main_~d~0 1)) (= main_~q~0 1) (< .cse6 (* 2 .cse8)) .cse9) (and (= .cse6 main_~r~0) (= main_~p~0 2) (<= 1 .cse8) .cse10 (<= (div (* (- 1) main_~d~0) (- 2)) main_~r~0) (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)) (< .cse8 main_~d~0)) (and (= main_~d~0 .cse8) (< main_~r~0 .cse8) .cse7 .cse10 (<= .cse6 main_~r~0) .cse9)))) [2022-04-06 17:02:16,756 INFO L878 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (let ((.cse8 (mod main_~B~0 4294967296))) (let ((.cse7 (<= .cse8 1)) (.cse10 (= main_~q~0 0)) (.cse6 (mod main_~A~0 4294967296)) (.cse9 (= main_~p~0 1))) (or (and (exists ((aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_div_v_main_~d~0_41_36 Int) (aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 Int)) (let ((.cse1 (div (+ (- 1) (* (- 1) main_~d~0) (* (- 1) main_~r~0)) (- 2)))) (let ((.cse2 (+ .cse1 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse0 (* aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 4294967296)) (.cse3 (* (- 2) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse4 (* 8589934592 aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse5 (* .cse1 (- 2)))) (and (<= aux_div_v_main_~d~0_41_36 (+ main_~d~0 main_~r~0)) (<= (+ .cse0 main_~d~0) (+ .cse1 (* 4294967296 aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (<= .cse0 .cse2) (<= .cse2 (+ .cse0 1)) (< aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 (+ (div (+ .cse3 .cse4 (* aux_div_v_main_~d~0_41_36 2) .cse5 1) 8589934592) 1)) (< aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 (+ (div (+ .cse3 .cse4 2 .cse5 (* main_~d~0 2)) 8589934592) 1)) (<= 0 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247))))) (= (+ main_~d~0 main_~r~0) .cse6) .cse7 (< main_~r~0 (+ main_~d~0 1)) (= main_~q~0 1) (< .cse6 (* 2 .cse8)) .cse9) (and (= .cse6 main_~r~0) (= main_~p~0 2) (<= 1 .cse8) .cse10 (<= (div (* (- 1) main_~d~0) (- 2)) main_~r~0) (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)) (< .cse8 main_~d~0)) (and (= main_~d~0 .cse8) (< main_~r~0 .cse8) .cse7 .cse10 (<= .cse6 main_~r~0) .cse9)))) [2022-04-06 17:02:16,756 INFO L878 garLoopResultBuilder]: At program point L39(lines 36 44) the Hoare annotation is: (let ((.cse10 (* (- 1) main_~d~0))) (let ((.cse6 (div .cse10 (- 2))) (.cse7 (mod main_~B~0 4294967296))) (let ((.cse0 (= (mod main_~A~0 4294967296) main_~r~0)) (.cse1 (= main_~d~0 (* main_~p~0 .cse7))) (.cse2 (<= 0 .cse6)) (.cse9 (<= .cse7 1)) (.cse3 (<= 1 .cse7)) (.cse4 (= (mod main_~d~0 2) 0)) (.cse5 (= main_~q~0 0)) (.cse8 (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= .cse6 main_~r~0) (<= .cse7 main_~r~0) .cse8) (and .cse0 .cse1 .cse9 .cse3 .cse5 .cse8 (= main_~p~0 1)) (and (= main_~A~0 (+ main_~r~0 (* (div main_~A~0 4294967296) 4294967296))) (<= (div main_~r~0 (- 2)) (div .cse10 4)) .cse1 .cse2 .cse9 .cse3 .cse4 .cse5 .cse8))))) [2022-04-06 17:02:16,756 INFO L878 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse10 (* (- 1) main_~d~0))) (let ((.cse6 (div .cse10 (- 2))) (.cse7 (mod main_~B~0 4294967296))) (let ((.cse0 (= (mod main_~A~0 4294967296) main_~r~0)) (.cse1 (= main_~d~0 (* main_~p~0 .cse7))) (.cse2 (<= 0 .cse6)) (.cse9 (<= .cse7 1)) (.cse3 (<= 1 .cse7)) (.cse4 (= (mod main_~d~0 2) 0)) (.cse5 (= main_~q~0 0)) (.cse8 (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= .cse6 main_~r~0) (<= .cse7 main_~r~0) .cse8) (and .cse0 .cse1 .cse9 .cse3 .cse5 .cse8 (= main_~p~0 1)) (and (= main_~A~0 (+ main_~r~0 (* (div main_~A~0 4294967296) 4294967296))) (<= (div main_~r~0 (- 2)) (div .cse10 4)) .cse1 .cse2 .cse9 .cse3 .cse4 .cse5 .cse8))))) [2022-04-06 17:02:16,756 INFO L878 garLoopResultBuilder]: At program point L37-1(line 37) the Hoare annotation is: (let ((.cse10 (* (- 1) main_~d~0))) (let ((.cse6 (div .cse10 (- 2))) (.cse7 (mod main_~B~0 4294967296))) (let ((.cse0 (= (mod main_~A~0 4294967296) main_~r~0)) (.cse1 (= main_~d~0 (* main_~p~0 .cse7))) (.cse2 (<= 0 .cse6)) (.cse9 (<= .cse7 1)) (.cse3 (<= 1 .cse7)) (.cse4 (= (mod main_~d~0 2) 0)) (.cse5 (= main_~q~0 0)) (.cse8 (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= .cse6 main_~r~0) (<= .cse7 main_~r~0) .cse8) (and .cse0 .cse1 .cse9 .cse3 .cse5 .cse8 (= main_~p~0 1)) (and (= main_~A~0 (+ main_~r~0 (* (div main_~A~0 4294967296) 4294967296))) (<= (div main_~r~0 (- 2)) (div .cse10 4)) .cse1 .cse2 .cse9 .cse3 .cse4 .cse5 .cse8))))) [2022-04-06 17:02:16,756 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-06 17:02:16,756 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-06 17:02:16,756 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-06 17:02:16,756 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-06 17:02:16,756 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-06 17:02:16,756 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-06 17:02:16,757 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-06 17:02:16,757 INFO L878 garLoopResultBuilder]: At program point L16(lines 16 17) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-04-06 17:02:16,757 INFO L878 garLoopResultBuilder]: At program point L15(lines 15 18) the Hoare annotation is: (and (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))) [2022-04-06 17:02:16,757 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-04-06 17:02:16,757 INFO L878 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (and (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))) [2022-04-06 17:02:16,757 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 14 20) the Hoare annotation is: (and (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))) [2022-04-06 17:02:16,757 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-04-06 17:02:16,759 INFO L719 BasicCegarLoop]: Path program histogram: [4, 4, 2, 2, 2, 2, 2, 2, 2] [2022-04-06 17:02:16,760 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 17:02:16,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 05:02:16 BoogieIcfgContainer [2022-04-06 17:02:16,771 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 17:02:16,771 INFO L158 Benchmark]: Toolchain (without parser) took 20362.38ms. Allocated memory was 161.5MB in the beginning and 287.3MB in the end (delta: 125.8MB). Free memory was 112.2MB in the beginning and 193.0MB in the end (delta: -80.9MB). Peak memory consumption was 141.9MB. Max. memory is 8.0GB. [2022-04-06 17:02:16,771 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 161.5MB. Free memory is still 128.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 17:02:16,772 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.88ms. Allocated memory is still 161.5MB. Free memory was 111.9MB in the beginning and 137.2MB in the end (delta: -25.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-06 17:02:16,772 INFO L158 Benchmark]: Boogie Preprocessor took 32.94ms. Allocated memory is still 161.5MB. Free memory was 137.2MB in the beginning and 135.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-06 17:02:16,772 INFO L158 Benchmark]: RCFGBuilder took 203.54ms. Allocated memory is still 161.5MB. Free memory was 135.6MB in the beginning and 125.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-06 17:02:16,772 INFO L158 Benchmark]: TraceAbstraction took 19883.96ms. Allocated memory was 161.5MB in the beginning and 287.3MB in the end (delta: 125.8MB). Free memory was 124.6MB in the beginning and 193.0MB in the end (delta: -68.4MB). Peak memory consumption was 156.0MB. Max. memory is 8.0GB. [2022-04-06 17:02:16,773 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 161.5MB. Free memory is still 128.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 224.88ms. Allocated memory is still 161.5MB. Free memory was 111.9MB in the beginning and 137.2MB in the end (delta: -25.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.94ms. Allocated memory is still 161.5MB. Free memory was 137.2MB in the beginning and 135.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 203.54ms. Allocated memory is still 161.5MB. Free memory was 135.6MB in the beginning and 125.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 19883.96ms. Allocated memory was 161.5MB in the beginning and 287.3MB in the end (delta: 125.8MB). Free memory was 124.6MB in the beginning and 193.0MB in the end (delta: -68.4MB). Peak memory consumption was 156.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 19.8s, OverallIterations: 11, TraceHistogramMax: 11, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 304 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 245 mSDsluCounter, 1587 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 93 IncrementalHoareTripleChecker+Unchecked, 1163 mSDsCounter, 204 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1727 IncrementalHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 204 mSolverCounterUnsat, 424 mSDtfsCounter, 1727 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1067 GetRequests, 926 SyntacticMatches, 9 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=8, InterpolantAutomatonStates: 94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 20 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 38 LocationsWithAnnotation, 342 PreInvPairs, 453 NumberOfFragments, 2155 HoareAnnotationTreeSize, 342 FomulaSimplifications, 447 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 38 FomulaSimplificationsInter, 1494 FormulaSimplificationTreeSizeReductionInter, 3.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((((((A % 4294967296 == r && d == p * (B % 4294967296)) && 0 <= -1 * d / -2) && 1 <= B % 4294967296) && d % 2 == 0) && q == 0) && -1 * d / -2 <= r) && B % 4294967296 <= r) && 0 < (-1 * r + 1) / 4294967296 + 1) || ((((((A % 4294967296 == r && d == p * (B % 4294967296)) && B % 4294967296 <= 1) && 1 <= B % 4294967296) && q == 0) && 0 < (-1 * r + 1) / 4294967296 + 1) && p == 1)) || ((((((((A == r + A / 4294967296 * 4294967296 && r / -2 <= -1 * d / 4) && d == p * (B % 4294967296)) && 0 <= -1 * d / -2) && B % 4294967296 <= 1) && 1 <= B % 4294967296) && d % 2 == 0) && q == 0) && 0 < (-1 * r + 1) / 4294967296 + 1) - ProcedureContractResult [Line: 11]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not: !(\old(cond) == 0) && cond == \old(cond) - ProcedureContractResult [Line: 22]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: (!(1 <= \old(cond)) || 1 <= cond) && (\old(cond) == 0 || !(cond == 0)) RESULT: Ultimate proved your program to be correct! [2022-04-06 17:02:16,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...