/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gj2007.c.i.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 12:12:50,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 12:12:50,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 12:12:50,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-18 12:12:50,827 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-03-18 12:12:50,852 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 12:12:50,852 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 12:12:50,853 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-18 12:12:50,853 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-18 12:12:50,858 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-18 12:12:50,859 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-18 12:12:50,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-18 12:12:50,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-18 12:12:50,861 INFO L138 SettingsManager]: * Use SBE=true [2022-03-18 12:12:50,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 12:12:50,862 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-18 12:12:50,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 12:12:50,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-18 12:12:50,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 12:12:50,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 12:12:50,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 12:12:50,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 12:12:50,865 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-18 12:12:50,865 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 12:12:50,865 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 12:12:50,865 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 12:12:50,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 12:12:50,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 12:12:50,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 12:12:50,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 12:12:50,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 12:12:50,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-18 12:12:50,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-18 12:12:50,866 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 12:12:50,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-18 12:12:50,867 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-18 12:12:50,867 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-03-18 12:12:50,867 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 12:12:50,867 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 12:12:51,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 12:12:51,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 12:12:51,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 12:12:51,140 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 12:12:51,140 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 12:12:51,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007.c.i.p+lhb-reducer.c [2022-03-18 12:12:51,189 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45bfd1caf/8c106d3016b543a28b52d868686adf0f/FLAGd7bb3a885 [2022-03-18 12:12:51,595 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 12:12:51,595 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.c.i.p+lhb-reducer.c [2022-03-18 12:12:51,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45bfd1caf/8c106d3016b543a28b52d868686adf0f/FLAGd7bb3a885 [2022-03-18 12:12:51,621 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45bfd1caf/8c106d3016b543a28b52d868686adf0f [2022-03-18 12:12:51,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 12:12:51,636 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 12:12:51,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 12:12:51,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 12:12:51,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 12:12:51,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 12:12:51" (1/1) ... [2022-03-18 12:12:51,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@799f3b6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:12:51, skipping insertion in model container [2022-03-18 12:12:51,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 12:12:51" (1/1) ... [2022-03-18 12:12:51,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 12:12:51,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 12:12:51,823 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.c.i.p+lhb-reducer.c[1613,1626] [2022-03-18 12:12:51,835 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 12:12:51,843 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 12:12:51,861 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.c.i.p+lhb-reducer.c[1613,1626] [2022-03-18 12:12:51,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 12:12:51,879 INFO L208 MainTranslator]: Completed translation [2022-03-18 12:12:51,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:12:51 WrapperNode [2022-03-18 12:12:51,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 12:12:51,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 12:12:51,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 12:12:51,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 12:12:51,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:12:51" (1/1) ... [2022-03-18 12:12:51,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:12:51" (1/1) ... [2022-03-18 12:12:51,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:12:51" (1/1) ... [2022-03-18 12:12:51,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:12:51" (1/1) ... [2022-03-18 12:12:51,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:12:51" (1/1) ... [2022-03-18 12:12:51,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:12:51" (1/1) ... [2022-03-18 12:12:51,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:12:51" (1/1) ... [2022-03-18 12:12:51,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 12:12:51,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 12:12:51,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 12:12:51,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 12:12:51,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:12:51" (1/1) ... [2022-03-18 12:12:51,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 12:12:51,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:51,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-18 12:12:51,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-18 12:12:51,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 12:12:51,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 12:12:51,985 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 12:12:51,985 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 12:12:51,985 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 12:12:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 12:12:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 12:12:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 12:12:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 12:12:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 12:12:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 12:12:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 12:12:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 12:12:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 12:12:51,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 12:12:51,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 12:12:51,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 12:12:51,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 12:12:51,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 12:12:52,041 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 12:12:52,043 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 12:12:52,192 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 12:12:52,197 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 12:12:52,198 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-18 12:12:52,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 12:12:52 BoogieIcfgContainer [2022-03-18 12:12:52,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 12:12:52,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 12:12:52,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 12:12:52,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 12:12:52,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 12:12:51" (1/3) ... [2022-03-18 12:12:52,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd8b147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 12:12:52, skipping insertion in model container [2022-03-18 12:12:52,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:12:51" (2/3) ... [2022-03-18 12:12:52,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd8b147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 12:12:52, skipping insertion in model container [2022-03-18 12:12:52,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 12:12:52" (3/3) ... [2022-03-18 12:12:52,208 INFO L111 eAbstractionObserver]: Analyzing ICFG gj2007.c.i.p+lhb-reducer.c [2022-03-18 12:12:52,213 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-18 12:12:52,213 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 12:12:52,255 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 12:12:52,261 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-18 12:12:52,261 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 12:12:52,275 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 28 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 12:12:52,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-18 12:12:52,280 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:52,281 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:52,288 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:52,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:52,302 INFO L85 PathProgramCache]: Analyzing trace with hash 66787427, now seen corresponding path program 1 times [2022-03-18 12:12:52,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:52,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305531273] [2022-03-18 12:12:52,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:52,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:12:52,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:52,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305531273] [2022-03-18 12:12:52,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305531273] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 12:12:52,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 12:12:52,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 12:12:52,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339429662] [2022-03-18 12:12:52,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 12:12:52,537 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 12:12:52,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:52,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 12:12:52,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-18 12:12:52,564 INFO L87 Difference]: Start difference. First operand has 33 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 28 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:52,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:52,685 INFO L93 Difference]: Finished difference Result 60 states and 98 transitions. [2022-03-18 12:12:52,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 12:12:52,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-03-18 12:12:52,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:52,695 INFO L225 Difference]: With dead ends: 60 [2022-03-18 12:12:52,695 INFO L226 Difference]: Without dead ends: 29 [2022-03-18 12:12:52,698 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-18 12:12:52,701 INFO L912 BasicCegarLoop]: 37 mSDtfsCounter, 39 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:52,702 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 46 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:12:52,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-03-18 12:12:52,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-03-18 12:12:52,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:52,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2022-03-18 12:12:52,735 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 27 [2022-03-18 12:12:52,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:52,735 INFO L478 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2022-03-18 12:12:52,736 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:52,736 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2022-03-18 12:12:52,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-18 12:12:52,736 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:52,737 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:52,737 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 12:12:52,737 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:52,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:52,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1388086372, now seen corresponding path program 1 times [2022-03-18 12:12:52,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:52,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936701277] [2022-03-18 12:12:52,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:52,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:12:52,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:52,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936701277] [2022-03-18 12:12:52,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936701277] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 12:12:52,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 12:12:52,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-18 12:12:52,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064314389] [2022-03-18 12:12:52,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 12:12:52,806 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-18 12:12:52,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:52,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-18 12:12:52,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-18 12:12:52,807 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:52,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:52,913 INFO L93 Difference]: Finished difference Result 58 states and 80 transitions. [2022-03-18 12:12:52,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-18 12:12:52,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-03-18 12:12:52,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:52,915 INFO L225 Difference]: With dead ends: 58 [2022-03-18 12:12:52,915 INFO L226 Difference]: Without dead ends: 43 [2022-03-18 12:12:52,916 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-18 12:12:52,917 INFO L912 BasicCegarLoop]: 22 mSDtfsCounter, 49 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:52,918 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 29 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:12:52,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-03-18 12:12:52,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-03-18 12:12:52,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 39 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:52,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2022-03-18 12:12:52,927 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 27 [2022-03-18 12:12:52,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:52,927 INFO L478 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2022-03-18 12:12:52,927 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:52,928 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2022-03-18 12:12:52,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-18 12:12:52,928 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:52,929 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:52,929 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 12:12:52,929 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:52,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:52,930 INFO L85 PathProgramCache]: Analyzing trace with hash -2120308874, now seen corresponding path program 1 times [2022-03-18 12:12:52,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:52,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109094553] [2022-03-18 12:12:52,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:52,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:53,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:53,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:12:53,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:53,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109094553] [2022-03-18 12:12:53,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109094553] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 12:12:53,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 12:12:53,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 12:12:53,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136379613] [2022-03-18 12:12:53,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 12:12:53,039 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 12:12:53,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:53,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 12:12:53,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 12:12:53,040 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:53,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:53,188 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2022-03-18 12:12:53,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 12:12:53,189 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-03-18 12:12:53,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:53,193 INFO L225 Difference]: With dead ends: 58 [2022-03-18 12:12:53,194 INFO L226 Difference]: Without dead ends: 41 [2022-03-18 12:12:53,195 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-03-18 12:12:53,201 INFO L912 BasicCegarLoop]: 30 mSDtfsCounter, 30 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:53,203 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 42 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:12:53,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-03-18 12:12:53,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-03-18 12:12:53,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 37 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:53,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2022-03-18 12:12:53,218 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 27 [2022-03-18 12:12:53,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:53,219 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2022-03-18 12:12:53,219 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:53,219 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2022-03-18 12:12:53,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-18 12:12:53,220 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:53,220 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:53,220 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-18 12:12:53,220 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:53,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:53,221 INFO L85 PathProgramCache]: Analyzing trace with hash 80992202, now seen corresponding path program 1 times [2022-03-18 12:12:53,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:53,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282311451] [2022-03-18 12:12:53,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:53,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:53,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:53,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:12:53,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:53,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282311451] [2022-03-18 12:12:53,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282311451] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 12:12:53,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 12:12:53,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 12:12:53,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987101708] [2022-03-18 12:12:53,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 12:12:53,318 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 12:12:53,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:53,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 12:12:53,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-18 12:12:53,319 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:53,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:53,454 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2022-03-18 12:12:53,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 12:12:53,455 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-03-18 12:12:53,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:53,457 INFO L225 Difference]: With dead ends: 52 [2022-03-18 12:12:53,457 INFO L226 Difference]: Without dead ends: 37 [2022-03-18 12:12:53,459 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-03-18 12:12:53,467 INFO L912 BasicCegarLoop]: 24 mSDtfsCounter, 29 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:53,469 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 41 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:12:53,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-03-18 12:12:53,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-03-18 12:12:53,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:53,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2022-03-18 12:12:53,476 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 27 [2022-03-18 12:12:53,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:53,477 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2022-03-18 12:12:53,477 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:53,477 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2022-03-18 12:12:53,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-18 12:12:53,477 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:53,478 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:53,478 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-18 12:12:53,478 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:53,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:53,478 INFO L85 PathProgramCache]: Analyzing trace with hash 2094273526, now seen corresponding path program 1 times [2022-03-18 12:12:53,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:53,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143216489] [2022-03-18 12:12:53,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:53,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:53,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:53,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:12:53,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:53,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143216489] [2022-03-18 12:12:53,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143216489] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 12:12:53,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 12:12:53,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 12:12:53,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631526951] [2022-03-18 12:12:53,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 12:12:53,623 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 12:12:53,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:53,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 12:12:53,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-03-18 12:12:53,624 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:53,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:53,771 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2022-03-18 12:12:53,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 12:12:53,772 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-03-18 12:12:53,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:53,774 INFO L225 Difference]: With dead ends: 44 [2022-03-18 12:12:53,774 INFO L226 Difference]: Without dead ends: 33 [2022-03-18 12:12:53,777 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2022-03-18 12:12:53,781 INFO L912 BasicCegarLoop]: 18 mSDtfsCounter, 35 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:53,785 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 25 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 12:12:53,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-03-18 12:12:53,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-03-18 12:12:53,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:53,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-03-18 12:12:53,794 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 27 [2022-03-18 12:12:53,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:53,795 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-03-18 12:12:53,795 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:53,795 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-03-18 12:12:53,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-18 12:12:53,798 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:53,798 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:53,798 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-18 12:12:53,798 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:53,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:53,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2013335789, now seen corresponding path program 1 times [2022-03-18 12:12:53,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:53,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292512077] [2022-03-18 12:12:53,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:53,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:53,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:53,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:53,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:12:53,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:53,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292512077] [2022-03-18 12:12:53,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292512077] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 12:12:53,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 12:12:53,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-18 12:12:53,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458538170] [2022-03-18 12:12:53,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 12:12:53,858 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-18 12:12:53,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:53,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-18 12:12:53,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-18 12:12:53,858 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:53,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:53,907 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2022-03-18 12:12:53,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-18 12:12:53,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-03-18 12:12:53,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:53,908 INFO L225 Difference]: With dead ends: 36 [2022-03-18 12:12:53,908 INFO L226 Difference]: Without dead ends: 33 [2022-03-18 12:12:53,908 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-18 12:12:53,909 INFO L912 BasicCegarLoop]: 9 mSDtfsCounter, 28 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:53,909 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 16 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 12:12:53,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-03-18 12:12:53,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-03-18 12:12:53,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:53,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2022-03-18 12:12:53,913 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 27 [2022-03-18 12:12:53,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:53,913 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2022-03-18 12:12:53,914 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:53,914 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-03-18 12:12:53,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-18 12:12:53,914 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:53,914 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:53,914 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-18 12:12:53,914 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:53,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:53,915 INFO L85 PathProgramCache]: Analyzing trace with hash 2013901818, now seen corresponding path program 1 times [2022-03-18 12:12:53,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:53,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580607868] [2022-03-18 12:12:53,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:53,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:54,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:54,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:12:54,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:54,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580607868] [2022-03-18 12:12:54,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580607868] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 12:12:54,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 12:12:54,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 12:12:54,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044528113] [2022-03-18 12:12:54,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 12:12:54,015 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 12:12:54,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:54,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 12:12:54,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-03-18 12:12:54,016 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:54,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:54,178 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2022-03-18 12:12:54,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 12:12:54,178 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-03-18 12:12:54,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:54,179 INFO L225 Difference]: With dead ends: 38 [2022-03-18 12:12:54,179 INFO L226 Difference]: Without dead ends: 31 [2022-03-18 12:12:54,179 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2022-03-18 12:12:54,180 INFO L912 BasicCegarLoop]: 12 mSDtfsCounter, 29 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:54,180 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 39 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:12:54,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-03-18 12:12:54,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-03-18 12:12:54,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:54,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2022-03-18 12:12:54,184 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 27 [2022-03-18 12:12:54,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:54,184 INFO L478 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2022-03-18 12:12:54,184 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:54,184 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2022-03-18 12:12:54,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-18 12:12:54,185 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:54,185 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:54,185 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-18 12:12:54,185 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:54,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:54,185 INFO L85 PathProgramCache]: Analyzing trace with hash 2072871847, now seen corresponding path program 1 times [2022-03-18 12:12:54,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:54,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826066843] [2022-03-18 12:12:54,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:54,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:54,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:54,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:54,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:12:54,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:54,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826066843] [2022-03-18 12:12:54,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826066843] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 12:12:54,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 12:12:54,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 12:12:54,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279030129] [2022-03-18 12:12:54,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 12:12:54,331 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 12:12:54,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:54,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 12:12:54,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-03-18 12:12:54,332 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:54,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:54,526 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2022-03-18 12:12:54,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 12:12:54,526 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-03-18 12:12:54,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:54,527 INFO L225 Difference]: With dead ends: 38 [2022-03-18 12:12:54,527 INFO L226 Difference]: Without dead ends: 33 [2022-03-18 12:12:54,528 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2022-03-18 12:12:54,528 INFO L912 BasicCegarLoop]: 10 mSDtfsCounter, 43 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:54,528 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 17 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:12:54,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-03-18 12:12:54,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-03-18 12:12:54,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:54,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2022-03-18 12:12:54,532 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 29 [2022-03-18 12:12:54,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:54,532 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2022-03-18 12:12:54,532 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:54,532 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2022-03-18 12:12:54,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-18 12:12:54,533 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:54,533 INFO L500 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:54,533 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-18 12:12:54,533 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:54,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:54,533 INFO L85 PathProgramCache]: Analyzing trace with hash -928406012, now seen corresponding path program 1 times [2022-03-18 12:12:54,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:54,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721629404] [2022-03-18 12:12:54,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:54,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:54,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:54,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:12:54,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:54,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721629404] [2022-03-18 12:12:54,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721629404] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:54,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310478981] [2022-03-18 12:12:54,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:54,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:54,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:54,645 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:54,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 12:12:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:54,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-18 12:12:54,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:54,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:12:54,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:55,083 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:12:55,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310478981] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:55,083 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:55,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 26 [2022-03-18 12:12:55,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220880616] [2022-03-18 12:12:55,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:55,084 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-18 12:12:55,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:55,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-18 12:12:55,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2022-03-18 12:12:55,086 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:55,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:55,552 INFO L93 Difference]: Finished difference Result 62 states and 75 transitions. [2022-03-18 12:12:55,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-18 12:12:55,553 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-03-18 12:12:55,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:55,557 INFO L225 Difference]: With dead ends: 62 [2022-03-18 12:12:55,557 INFO L226 Difference]: Without dead ends: 57 [2022-03-18 12:12:55,558 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=853, Invalid=1403, Unknown=0, NotChecked=0, Total=2256 [2022-03-18 12:12:55,560 INFO L912 BasicCegarLoop]: 10 mSDtfsCounter, 76 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:55,560 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 37 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:12:55,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-03-18 12:12:55,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-03-18 12:12:55,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 53 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:55,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2022-03-18 12:12:55,569 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 31 [2022-03-18 12:12:55,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:55,569 INFO L478 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2022-03-18 12:12:55,569 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:55,569 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2022-03-18 12:12:55,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-18 12:12:55,570 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:55,571 INFO L500 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:55,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-18 12:12:55,789 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:55,789 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:55,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:55,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1733616864, now seen corresponding path program 2 times [2022-03-18 12:12:55,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:55,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566195580] [2022-03-18 12:12:55,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:55,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:56,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:56,120 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 14 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:12:56,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:56,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566195580] [2022-03-18 12:12:56,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566195580] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:56,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946962890] [2022-03-18 12:12:56,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:12:56,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:56,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:56,134 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:56,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 12:12:56,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:12:56,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:12:56,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-18 12:12:56,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:56,349 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 14 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:12:56,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:57,008 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 14 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:12:57,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946962890] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:57,008 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:57,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 50 [2022-03-18 12:12:57,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866994625] [2022-03-18 12:12:57,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:57,009 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-18 12:12:57,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:57,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-18 12:12:57,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2022-03-18 12:12:57,011 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 50 states, 50 states have (on average 2.06) internal successors, (103), 49 states have internal predecessors, (103), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:58,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:58,204 INFO L93 Difference]: Finished difference Result 110 states and 135 transitions. [2022-03-18 12:12:58,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-18 12:12:58,204 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.06) internal successors, (103), 49 states have internal predecessors, (103), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-03-18 12:12:58,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:58,205 INFO L225 Difference]: With dead ends: 110 [2022-03-18 12:12:58,205 INFO L226 Difference]: Without dead ends: 105 [2022-03-18 12:12:58,208 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3433, Invalid=5687, Unknown=0, NotChecked=0, Total=9120 [2022-03-18 12:12:58,208 INFO L912 BasicCegarLoop]: 10 mSDtfsCounter, 168 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:58,208 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 42 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:12:58,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-03-18 12:12:58,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-03-18 12:12:58,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 101 states have (on average 1.0198019801980198) internal successors, (103), 101 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:58,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2022-03-18 12:12:58,214 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 55 [2022-03-18 12:12:58,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:58,215 INFO L478 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2022-03-18 12:12:58,215 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.06) internal successors, (103), 49 states have internal predecessors, (103), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:12:58,215 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2022-03-18 12:12:58,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-18 12:12:58,216 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:58,216 INFO L500 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:58,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-18 12:12:58,419 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-03-18 12:12:58,420 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:58,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:58,420 INFO L85 PathProgramCache]: Analyzing trace with hash 727705240, now seen corresponding path program 3 times [2022-03-18 12:12:58,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:58,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945489870] [2022-03-18 12:12:58,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:58,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:59,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:59,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 38 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:12:59,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:59,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945489870] [2022-03-18 12:12:59,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945489870] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:59,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178261361] [2022-03-18 12:12:59,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 12:12:59,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:59,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:59,242 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:59,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-18 12:12:59,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-18 12:12:59,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:12:59,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-18 12:12:59,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:59,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 111 proven. 1 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2022-03-18 12:12:59,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:59,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 111 proven. 1 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2022-03-18 12:12:59,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178261361] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:59,664 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:59,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 4, 4] total 54 [2022-03-18 12:12:59,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433245538] [2022-03-18 12:12:59,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:59,664 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-03-18 12:12:59,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:59,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-03-18 12:12:59,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2022-03-18 12:12:59,666 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand has 54 states, 54 states have (on average 2.4074074074074074) internal successors, (130), 53 states have internal predecessors, (130), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:13:00,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:13:00,973 INFO L93 Difference]: Finished difference Result 117 states and 122 transitions. [2022-03-18 12:13:00,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-18 12:13:00,973 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.4074074074074074) internal successors, (130), 53 states have internal predecessors, (130), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2022-03-18 12:13:00,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:13:00,974 INFO L225 Difference]: With dead ends: 117 [2022-03-18 12:13:00,974 INFO L226 Difference]: Without dead ends: 112 [2022-03-18 12:13:00,977 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1321 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4134, Invalid=6786, Unknown=0, NotChecked=0, Total=10920 [2022-03-18 12:13:00,977 INFO L912 BasicCegarLoop]: 9 mSDtfsCounter, 138 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:13:00,977 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 31 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:13:00,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-03-18 12:13:00,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2022-03-18 12:13:00,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 108 states have (on average 1.0185185185185186) internal successors, (110), 108 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:13:00,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2022-03-18 12:13:00,983 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 103 [2022-03-18 12:13:00,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:13:00,983 INFO L478 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2022-03-18 12:13:00,983 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.4074074074074074) internal successors, (130), 53 states have internal predecessors, (130), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:13:00,983 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2022-03-18 12:13:00,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-03-18 12:13:00,984 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:13:00,984 INFO L500 BasicCegarLoop]: trace histogram [42, 38, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:13:01,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-18 12:13:01,192 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:01,192 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:13:01,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:13:01,193 INFO L85 PathProgramCache]: Analyzing trace with hash -191250589, now seen corresponding path program 4 times [2022-03-18 12:13:01,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:13:01,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673243890] [2022-03-18 12:13:01,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:13:01,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:13:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:02,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:13:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:02,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 273 proven. 1482 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-18 12:13:02,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:13:02,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673243890] [2022-03-18 12:13:02,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673243890] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:13:02,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581481467] [2022-03-18 12:13:02,010 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 12:13:02,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:02,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:13:02,011 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:13:02,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-18 12:13:02,064 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 12:13:02,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:13:02,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-18 12:13:02,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:13:02,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 273 proven. 1482 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-18 12:13:02,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:13:02,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 273 proven. 1482 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-18 12:13:02,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581481467] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:13:02,545 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:13:02,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 50] total 54 [2022-03-18 12:13:02,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669094138] [2022-03-18 12:13:02,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:13:02,548 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-03-18 12:13:02,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:13:02,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-03-18 12:13:02,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2022-03-18 12:13:02,549 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 54 states, 54 states have (on average 2.4444444444444446) internal successors, (132), 53 states have internal predecessors, (132), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:13:03,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:13:03,851 INFO L93 Difference]: Finished difference Result 128 states and 132 transitions. [2022-03-18 12:13:03,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-18 12:13:03,851 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.4444444444444446) internal successors, (132), 53 states have internal predecessors, (132), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2022-03-18 12:13:03,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:13:03,852 INFO L225 Difference]: With dead ends: 128 [2022-03-18 12:13:03,852 INFO L226 Difference]: Without dead ends: 118 [2022-03-18 12:13:03,854 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4031, Invalid=6681, Unknown=0, NotChecked=0, Total=10712 [2022-03-18 12:13:03,855 INFO L912 BasicCegarLoop]: 10 mSDtfsCounter, 97 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:13:03,855 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 47 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:13:03,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-03-18 12:13:03,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2022-03-18 12:13:03,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 114 states have (on average 1.0175438596491229) internal successors, (116), 114 states have internal predecessors, (116), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:13:03,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 119 transitions. [2022-03-18 12:13:03,861 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 119 transitions. Word has length 111 [2022-03-18 12:13:03,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:13:03,861 INFO L478 AbstractCegarLoop]: Abstraction has 118 states and 119 transitions. [2022-03-18 12:13:03,862 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.4444444444444446) internal successors, (132), 53 states have internal predecessors, (132), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:13:03,862 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 119 transitions. [2022-03-18 12:13:03,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-03-18 12:13:03,862 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:13:03,863 INFO L500 BasicCegarLoop]: trace histogram [45, 41, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:13:03,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-03-18 12:13:04,063 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:04,064 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:13:04,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:13:04,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1549644550, now seen corresponding path program 5 times [2022-03-18 12:13:04,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:13:04,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430929383] [2022-03-18 12:13:04,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:13:04,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:13:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:05,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:13:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:05,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 0 proven. 2025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:13:05,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:13:05,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430929383] [2022-03-18 12:13:05,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430929383] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:13:05,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779890966] [2022-03-18 12:13:05,125 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 12:13:05,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:05,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:13:05,126 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:13:05,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-18 12:13:05,194 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2022-03-18 12:13:05,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:13:05,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-18 12:13:05,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:13:05,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 1035 proven. 484 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2022-03-18 12:13:05,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:13:06,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 1035 proven. 484 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2022-03-18 12:13:06,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779890966] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:13:06,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:13:06,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 25, 25] total 99 [2022-03-18 12:13:06,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508875332] [2022-03-18 12:13:06,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:13:06,903 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-03-18 12:13:06,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:13:06,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-03-18 12:13:06,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2022-03-18 12:13:06,907 INFO L87 Difference]: Start difference. First operand 118 states and 119 transitions. Second operand has 99 states, 99 states have (on average 2.2626262626262625) internal successors, (224), 98 states have internal predecessors, (224), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:13:11,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:13:11,453 INFO L93 Difference]: Finished difference Result 205 states and 247 transitions. [2022-03-18 12:13:11,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-03-18 12:13:11,453 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.2626262626262625) internal successors, (224), 98 states have internal predecessors, (224), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 117 [2022-03-18 12:13:11,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:13:11,454 INFO L225 Difference]: With dead ends: 205 [2022-03-18 12:13:11,454 INFO L226 Difference]: Without dead ends: 202 [2022-03-18 12:13:11,458 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4849 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=14259, Invalid=23571, Unknown=0, NotChecked=0, Total=37830 [2022-03-18 12:13:11,459 INFO L912 BasicCegarLoop]: 9 mSDtfsCounter, 224 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 12:13:11,459 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 36 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 12:13:11,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-03-18 12:13:11,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2022-03-18 12:13:11,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 198 states have (on average 1.0101010101010102) internal successors, (200), 198 states have internal predecessors, (200), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:13:11,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 203 transitions. [2022-03-18 12:13:11,466 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 203 transitions. Word has length 117 [2022-03-18 12:13:11,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:13:11,467 INFO L478 AbstractCegarLoop]: Abstraction has 202 states and 203 transitions. [2022-03-18 12:13:11,467 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 2.2626262626262625) internal successors, (224), 98 states have internal predecessors, (224), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:13:11,467 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 203 transitions. [2022-03-18 12:13:11,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-03-18 12:13:11,468 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:13:11,468 INFO L500 BasicCegarLoop]: trace histogram [87, 46, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:13:11,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-18 12:13:11,674 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-18 12:13:11,675 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:13:11,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:13:11,675 INFO L85 PathProgramCache]: Analyzing trace with hash 716116606, now seen corresponding path program 6 times [2022-03-18 12:13:11,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:13:11,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634359174] [2022-03-18 12:13:11,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:13:11,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:13:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:13:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,162 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 0 proven. 7569 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:13:15,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:13:15,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634359174] [2022-03-18 12:13:15,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634359174] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:13:15,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129126311] [2022-03-18 12:13:15,162 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 12:13:15,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:15,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:13:15,164 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:13:15,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-18 12:13:15,287 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 87 check-sat command(s) [2022-03-18 12:13:15,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:13:15,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-18 12:13:15,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:13:15,618 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 3813 proven. 2116 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2022-03-18 12:13:15,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:13:16,085 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 3813 proven. 2116 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2022-03-18 12:13:16,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129126311] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:13:16,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:13:16,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 49, 49] total 103 [2022-03-18 12:13:16,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839278554] [2022-03-18 12:13:16,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:13:16,086 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-03-18 12:13:16,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:13:16,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-03-18 12:13:16,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2022-03-18 12:13:16,088 INFO L87 Difference]: Start difference. First operand 202 states and 203 transitions. Second operand has 103 states, 103 states have (on average 2.2233009708737863) internal successors, (229), 102 states have internal predecessors, (229), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:13:19,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:13:19,311 INFO L93 Difference]: Finished difference Result 213 states and 217 transitions. [2022-03-18 12:13:19,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-03-18 12:13:19,312 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.2233009708737863) internal successors, (229), 102 states have internal predecessors, (229), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 201 [2022-03-18 12:13:19,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:13:19,313 INFO L225 Difference]: With dead ends: 213 [2022-03-18 12:13:19,314 INFO L226 Difference]: Without dead ends: 210 [2022-03-18 12:13:19,316 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 448 SyntacticMatches, 2 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5096 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=15453, Invalid=25553, Unknown=0, NotChecked=0, Total=41006 [2022-03-18 12:13:19,316 INFO L912 BasicCegarLoop]: 9 mSDtfsCounter, 228 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:13:19,316 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 36 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 12:13:19,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-03-18 12:13:19,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2022-03-18 12:13:19,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 206 states have (on average 1.0097087378640777) internal successors, (208), 206 states have internal predecessors, (208), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:13:19,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 211 transitions. [2022-03-18 12:13:19,327 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 211 transitions. Word has length 201 [2022-03-18 12:13:19,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:13:19,328 INFO L478 AbstractCegarLoop]: Abstraction has 210 states and 211 transitions. [2022-03-18 12:13:19,328 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.2233009708737863) internal successors, (229), 102 states have internal predecessors, (229), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:13:19,328 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 211 transitions. [2022-03-18 12:13:19,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-03-18 12:13:19,329 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:13:19,329 INFO L500 BasicCegarLoop]: trace histogram [91, 50, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:13:19,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-18 12:13:19,535 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:19,535 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:13:19,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:13:19,536 INFO L85 PathProgramCache]: Analyzing trace with hash 2004326, now seen corresponding path program 7 times [2022-03-18 12:13:19,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:13:19,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60337466] [2022-03-18 12:13:19,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:13:19,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:13:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:20,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:13:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:20,745 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 0 proven. 6559 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2022-03-18 12:13:20,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:13:20,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60337466] [2022-03-18 12:13:20,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60337466] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:13:20,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586847955] [2022-03-18 12:13:20,746 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 12:13:20,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:20,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:13:20,747 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:13:20,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-18 12:13:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:20,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 105 conjunts are in the unsatisfiable core [2022-03-18 12:13:20,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:13:21,712 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 0 proven. 6559 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2022-03-18 12:13:21,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:13:22,489 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 0 proven. 6559 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2022-03-18 12:13:22,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586847955] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:13:22,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:13:22,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54, 54] total 56 [2022-03-18 12:13:22,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573411772] [2022-03-18 12:13:22,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:13:22,490 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-03-18 12:13:22,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:13:22,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-03-18 12:13:22,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=2970, Unknown=0, NotChecked=0, Total=3080 [2022-03-18 12:13:22,491 INFO L87 Difference]: Start difference. First operand 210 states and 211 transitions. Second operand has 56 states, 56 states have (on average 2.2857142857142856) internal successors, (128), 55 states have internal predecessors, (128), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:13:25,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:13:25,587 INFO L93 Difference]: Finished difference Result 216 states and 217 transitions. [2022-03-18 12:13:25,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-18 12:13:25,588 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.2857142857142856) internal successors, (128), 55 states have internal predecessors, (128), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 209 [2022-03-18 12:13:25,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:13:25,589 INFO L225 Difference]: With dead ends: 216 [2022-03-18 12:13:25,589 INFO L226 Difference]: Without dead ends: 213 [2022-03-18 12:13:25,593 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 414 SyntacticMatches, 5 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1376 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=321, Invalid=11235, Unknown=0, NotChecked=0, Total=11556 [2022-03-18 12:13:25,597 INFO L912 BasicCegarLoop]: 78 mSDtfsCounter, 79 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 6432 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 6484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 6432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-18 12:13:25,598 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 340 Invalid, 6484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 6432 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-18 12:13:25,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-03-18 12:13:25,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 212. [2022-03-18 12:13:25,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 208 states have (on average 1.0096153846153846) internal successors, (210), 208 states have internal predecessors, (210), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:13:25,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 213 transitions. [2022-03-18 12:13:25,614 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 213 transitions. Word has length 209 [2022-03-18 12:13:25,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:13:25,614 INFO L478 AbstractCegarLoop]: Abstraction has 212 states and 213 transitions. [2022-03-18 12:13:25,615 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.2857142857142856) internal successors, (128), 55 states have internal predecessors, (128), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:13:25,615 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 213 transitions. [2022-03-18 12:13:25,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-03-18 12:13:25,616 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:13:25,616 INFO L500 BasicCegarLoop]: trace histogram [92, 51, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:13:25,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-03-18 12:13:25,842 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:25,842 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:13:25,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:13:25,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1918619104, now seen corresponding path program 8 times [2022-03-18 12:13:25,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:13:25,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463615227] [2022-03-18 12:13:25,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:13:25,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:13:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:26,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:13:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:26,921 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 6742 proven. 0 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2022-03-18 12:13:26,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:13:26,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463615227] [2022-03-18 12:13:26,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463615227] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 12:13:26,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 12:13:26,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-03-18 12:13:26,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987791023] [2022-03-18 12:13:26,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 12:13:26,923 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-03-18 12:13:26,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:13:26,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-03-18 12:13:26,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2022-03-18 12:13:26,924 INFO L87 Difference]: Start difference. First operand 212 states and 213 transitions. Second operand has 53 states, 53 states have (on average 2.3962264150943398) internal successors, (127), 52 states have internal predecessors, (127), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:13:27,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:13:27,936 INFO L93 Difference]: Finished difference Result 212 states and 213 transitions. [2022-03-18 12:13:27,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-18 12:13:27,937 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.3962264150943398) internal successors, (127), 52 states have internal predecessors, (127), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 211 [2022-03-18 12:13:27,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:13:27,937 INFO L225 Difference]: With dead ends: 212 [2022-03-18 12:13:27,937 INFO L226 Difference]: Without dead ends: 0 [2022-03-18 12:13:27,940 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3978, Invalid=6528, Unknown=0, NotChecked=0, Total=10506 [2022-03-18 12:13:27,941 INFO L912 BasicCegarLoop]: 27 mSDtfsCounter, 22 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:13:27,941 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 49 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 12:13:27,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-18 12:13:27,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-18 12:13:27,942 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) [2022-03-18 12:13:27,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-18 12:13:27,943 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 211 [2022-03-18 12:13:27,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:13:27,943 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-18 12:13:27,943 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.3962264150943398) internal successors, (127), 52 states have internal predecessors, (127), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:13:27,943 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-18 12:13:27,943 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-18 12:13:27,946 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 12:13:27,946 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-18 12:13:27,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-18 12:13:29,599 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2022-03-18 12:13:29,599 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2022-03-18 12:13:29,599 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2022-03-18 12:13:29,599 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2022-03-18 12:13:29,599 INFO L882 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-03-18 12:13:29,599 INFO L882 garLoopResultBuilder]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2022-03-18 12:13:29,599 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2022-03-18 12:13:29,599 INFO L882 garLoopResultBuilder]: For program point L31(lines 31 184) no Hoare annotation was computed. [2022-03-18 12:13:29,600 INFO L878 garLoopResultBuilder]: At program point L159(lines 43 160) the Hoare annotation is: (and (<= main_~main__y~0 50) (<= 50 main_~main__y~0) (= |old(~__return_720~0)| ~__return_720~0) (<= main_~main__x~0 5)) [2022-03-18 12:13:29,600 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 13 214) no Hoare annotation was computed. [2022-03-18 12:13:29,600 INFO L882 garLoopResultBuilder]: For program point L19(lines 19 208) no Hoare annotation was computed. [2022-03-18 12:13:29,600 INFO L878 garLoopResultBuilder]: At program point L147(lines 49 148) the Hoare annotation is: (and (<= main_~main__y~0 50) (<= 50 main_~main__y~0) (= |old(~__return_720~0)| ~__return_720~0) (<= main_~main__x~0 6)) [2022-03-18 12:13:29,600 INFO L878 garLoopResultBuilder]: At program point L135(lines 55 136) the Hoare annotation is: (and (<= main_~main__x~0 7) (<= main_~main__y~0 50) (<= 50 main_~main__y~0) (= |old(~__return_720~0)| ~__return_720~0)) [2022-03-18 12:13:29,600 INFO L882 garLoopResultBuilder]: For program point L94(lines 94 103) no Hoare annotation was computed. [2022-03-18 12:13:29,600 INFO L882 garLoopResultBuilder]: For program point L61(lines 61 124) no Hoare annotation was computed. [2022-03-18 12:13:29,601 INFO L878 garLoopResultBuilder]: At program point L123(lines 61 124) the Hoare annotation is: (and (<= main_~main__y~0 50) (<= 50 main_~main__y~0) (<= main_~main__x~0 8) (= |old(~__return_720~0)| ~__return_720~0)) [2022-03-18 12:13:29,601 INFO L882 garLoopResultBuilder]: For program point L49(lines 49 148) no Hoare annotation was computed. [2022-03-18 12:13:29,602 INFO L878 garLoopResultBuilder]: At program point L111(lines 67 112) the Hoare annotation is: (let ((.cse0 (= |old(~__return_720~0)| ~__return_720~0))) (or (and (<= main_~main__y~0 72) (<= 72 main_~main__x~0) (<= 72 main_~main__y~0) .cse0 (<= main_~main__x~0 72)) (and (<= 83 main_~main__y~0) (<= main_~main__x~0 83) (<= main_~main__y~0 83) .cse0 (<= 83 main_~main__x~0)) (and (<= 75 main_~main__x~0) (<= main_~main__x~0 75) (<= main_~main__y~0 75) .cse0 (<= 75 main_~main__y~0)) (and (<= main_~main__x~0 64) (<= 64 main_~main__y~0) .cse0 (<= main_~main__y~0 64) (<= 64 main_~main__x~0)) (and (<= 61 main_~main__x~0) (<= main_~main__x~0 61) (<= main_~main__y~0 61) (<= 61 main_~main__y~0) .cse0) (and (<= main_~main__y~0 51) (<= main_~main__x~0 51) .cse0 (<= 51 main_~main__y~0) (<= 51 main_~main__x~0)) (and (<= 76 main_~main__x~0) .cse0 (<= main_~main__y~0 76) (<= main_~main__x~0 76) (<= 76 main_~main__y~0)) (and (<= 95 main_~main__y~0) .cse0 (<= main_~main__x~0 95) (<= main_~main__y~0 95) (<= 95 main_~main__x~0)) (and (< main_~main__x~0 100) (<= main_~main__y~0 99) (<= 99 main_~main__y~0) .cse0 (<= 99 main_~main__x~0)) (and (<= main_~main__x~0 73) (<= 73 main_~main__y~0) .cse0 (<= main_~main__y~0 73) (<= 73 main_~main__x~0)) (and (<= 96 main_~main__x~0) .cse0 (<= main_~main__y~0 96) (<= 96 main_~main__y~0) (<= main_~main__x~0 96)) (and (<= main_~main__x~0 92) (<= 92 main_~main__x~0) (<= 92 main_~main__y~0) .cse0 (<= main_~main__y~0 92)) (and (<= 71 main_~main__y~0) (<= main_~main__y~0 71) (<= main_~main__x~0 71) .cse0 (<= 71 main_~main__x~0)) (and (<= main_~main__x~0 56) .cse0 (<= 56 main_~main__x~0) (<= 56 main_~main__y~0) (<= main_~main__y~0 56)) (and (<= 86 main_~main__x~0) (<= main_~main__x~0 86) (<= 86 main_~main__y~0) .cse0 (<= main_~main__y~0 86)) (and (<= main_~main__y~0 57) (<= 57 main_~main__x~0) (<= main_~main__x~0 57) .cse0 (<= 57 main_~main__y~0)) (and (<= 70 main_~main__y~0) (<= 70 main_~main__x~0) (<= main_~main__y~0 70) .cse0 (<= main_~main__x~0 70)) (and (<= 77 main_~main__x~0) (<= main_~main__y~0 77) .cse0 (<= 77 main_~main__y~0) (<= main_~main__x~0 77)) (and (<= main_~main__x~0 65) (<= 65 main_~main__x~0) (<= 65 main_~main__y~0) .cse0 (<= main_~main__y~0 65)) (and (<= 89 main_~main__y~0) (<= main_~main__y~0 89) (<= main_~main__x~0 89) .cse0 (<= 89 main_~main__x~0)) (and (<= main_~main__y~0 62) .cse0 (<= main_~main__x~0 62) (<= 62 main_~main__x~0) (<= 62 main_~main__y~0)) (and (<= main_~main__y~0 67) (<= 67 main_~main__y~0) (<= main_~main__x~0 67) .cse0 (<= 67 main_~main__x~0)) (and (<= 100 main_~main__x~0) (< 99 main_~main__y~0) .cse0 (<= main_~main__y~0 100)) (and (<= 80 main_~main__y~0) .cse0 (<= main_~main__y~0 80) (<= main_~main__x~0 80) (<= 80 main_~main__x~0)) (and (<= main_~main__y~0 69) (<= main_~main__x~0 69) (<= 69 main_~main__y~0) .cse0 (<= 69 main_~main__x~0)) (and (<= 91 main_~main__y~0) (<= 91 main_~main__x~0) (<= main_~main__x~0 91) .cse0 (<= main_~main__y~0 91)) (and (<= main_~main__y~0 90) .cse0 (<= main_~main__x~0 90) (<= 90 main_~main__x~0) (<= 90 main_~main__y~0)) (and (<= 82 main_~main__x~0) (<= main_~main__x~0 82) .cse0 (<= 82 main_~main__y~0) (<= main_~main__y~0 82)) (and (<= main_~main__y~0 85) (<= main_~main__x~0 85) (<= 85 main_~main__x~0) .cse0 (<= 85 main_~main__y~0)) (and (<= main_~main__x~0 88) (<= main_~main__y~0 88) .cse0 (<= 88 main_~main__y~0) (<= 88 main_~main__x~0)) (and (<= main_~main__x~0 59) (<= 59 main_~main__x~0) (<= 59 main_~main__y~0) .cse0 (<= main_~main__y~0 59)) (and (<= 53 main_~main__y~0) (<= main_~main__y~0 53) .cse0 (<= 53 main_~main__x~0) (<= main_~main__x~0 53)) (and (<= main_~main__y~0 66) .cse0 (<= main_~main__x~0 66) (<= 66 main_~main__x~0) (<= 66 main_~main__y~0)) (and (<= main_~main__y~0 97) (<= 97 main_~main__y~0) .cse0 (<= 97 main_~main__x~0) (< main_~main__x~0 98)) (and (<= 55 main_~main__y~0) (<= 55 main_~main__x~0) (<= main_~main__y~0 55) .cse0 (<= main_~main__x~0 55)) (and (<= 52 main_~main__y~0) (<= 52 main_~main__x~0) .cse0 (<= main_~main__x~0 52) (<= main_~main__y~0 52)) (and (<= main_~main__y~0 60) (<= main_~main__x~0 60) (<= 60 main_~main__y~0) .cse0 (<= 60 main_~main__x~0)) (and (<= 74 main_~main__y~0) (<= main_~main__x~0 74) (<= 74 main_~main__x~0) .cse0 (<= main_~main__y~0 74)) (and (<= main_~main__y~0 98) (<= 98 main_~main__y~0) (<= 98 main_~main__x~0) (< main_~main__x~0 99) .cse0) (and (<= 63 main_~main__y~0) (<= 63 main_~main__x~0) .cse0 (<= main_~main__x~0 63) (<= main_~main__y~0 63)) (and (<= main_~main__y~0 84) (<= main_~main__x~0 84) (<= 84 main_~main__x~0) (<= 84 main_~main__y~0) .cse0) (and (<= main_~main__y~0 50) (<= 50 main_~main__y~0) (<= main_~main__x~0 50) .cse0) (and (<= 87 main_~main__x~0) (<= 87 main_~main__y~0) (<= main_~main__y~0 87) .cse0 (<= main_~main__x~0 87)) (and (<= main_~main__y~0 78) (<= 78 main_~main__x~0) (<= 78 main_~main__y~0) .cse0 (<= main_~main__x~0 78)) (and (<= main_~main__y~0 79) (<= main_~main__x~0 79) .cse0 (<= 79 main_~main__x~0) (<= 79 main_~main__y~0)) (and (<= 81 main_~main__x~0) (<= main_~main__y~0 81) (<= 81 main_~main__y~0) .cse0 (<= main_~main__x~0 81)) (and (<= main_~main__x~0 58) (<= main_~main__y~0 58) .cse0 (<= 58 main_~main__y~0) (<= 58 main_~main__x~0)) (and (<= main_~main__y~0 68) (<= main_~main__x~0 68) (<= 68 main_~main__y~0) (<= 68 main_~main__x~0) .cse0) (and (<= 93 main_~main__y~0) .cse0 (<= 93 main_~main__x~0) (<= main_~main__x~0 93) (<= main_~main__y~0 93)) (and (<= 94 main_~main__y~0) (<= main_~main__x~0 94) (<= main_~main__y~0 94) .cse0 (<= 94 main_~main__x~0)) (and (<= main_~main__x~0 54) .cse0 (<= 54 main_~main__y~0) (<= main_~main__y~0 54) (<= 54 main_~main__x~0)))) [2022-03-18 12:13:29,602 INFO L882 garLoopResultBuilder]: For program point L74(lines 74 85) no Hoare annotation was computed. [2022-03-18 12:13:29,603 INFO L882 garLoopResultBuilder]: For program point L37(lines 37 172) no Hoare annotation was computed. [2022-03-18 12:13:29,603 INFO L882 garLoopResultBuilder]: For program point L25(lines 25 196) no Hoare annotation was computed. [2022-03-18 12:13:29,603 INFO L882 garLoopResultBuilder]: For program point L17(lines 17 213) no Hoare annotation was computed. [2022-03-18 12:13:29,603 INFO L878 garLoopResultBuilder]: At program point L207(lines 19 208) the Hoare annotation is: (and (<= main_~main__y~0 50) (<= 50 main_~main__y~0) (= |old(~__return_720~0)| ~__return_720~0) (<= main_~main__x~0 1)) [2022-03-18 12:13:29,603 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 13 214) no Hoare annotation was computed. [2022-03-18 12:13:29,603 INFO L882 garLoopResultBuilder]: For program point L67(lines 67 112) no Hoare annotation was computed. [2022-03-18 12:13:29,604 INFO L878 garLoopResultBuilder]: At program point L195(lines 25 196) the Hoare annotation is: (and (<= main_~main__y~0 50) (<= 50 main_~main__y~0) (<= main_~main__x~0 2) (= |old(~__return_720~0)| ~__return_720~0)) [2022-03-18 12:13:29,604 INFO L882 garLoopResultBuilder]: For program point L96(line 96) no Hoare annotation was computed. [2022-03-18 12:13:29,604 INFO L882 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 96) no Hoare annotation was computed. [2022-03-18 12:13:29,604 INFO L878 garLoopResultBuilder]: At program point mainENTRY(lines 13 214) the Hoare annotation is: (= |old(~__return_720~0)| ~__return_720~0) [2022-03-18 12:13:29,604 INFO L882 garLoopResultBuilder]: For program point L55(lines 55 136) no Hoare annotation was computed. [2022-03-18 12:13:29,604 INFO L878 garLoopResultBuilder]: At program point L183(lines 31 184) the Hoare annotation is: (and (<= main_~main__y~0 50) (<= 50 main_~main__y~0) (= |old(~__return_720~0)| ~__return_720~0) (<= main_~main__x~0 3)) [2022-03-18 12:13:29,604 INFO L882 garLoopResultBuilder]: For program point L43(lines 43 160) no Hoare annotation was computed. [2022-03-18 12:13:29,604 INFO L878 garLoopResultBuilder]: At program point L171(lines 37 172) the Hoare annotation is: (and (<= main_~main__y~0 50) (<= 50 main_~main__y~0) (<= main_~main__x~0 4) (= |old(~__return_720~0)| ~__return_720~0)) [2022-03-18 12:13:29,604 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-03-18 12:13:29,604 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__return_720~0)| ~__return_720~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-18 12:13:29,604 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-03-18 12:13:29,605 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-03-18 12:13:29,605 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-18 12:13:29,605 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-18 12:13:29,605 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-03-18 12:13:29,608 INFO L718 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:13:29,610 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 12:13:29,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 12:13:29 BoogieIcfgContainer [2022-03-18 12:13:29,654 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 12:13:29,655 INFO L158 Benchmark]: Toolchain (without parser) took 38018.63ms. Allocated memory was 204.5MB in the beginning and 398.5MB in the end (delta: 194.0MB). Free memory was 176.9MB in the beginning and 355.0MB in the end (delta: -178.0MB). Peak memory consumption was 240.5MB. Max. memory is 8.0GB. [2022-03-18 12:13:29,655 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 204.5MB. Free memory is still 161.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 12:13:29,655 INFO L158 Benchmark]: CACSL2BoogieTranslator took 242.42ms. Allocated memory was 204.5MB in the beginning and 274.7MB in the end (delta: 70.3MB). Free memory was 176.7MB in the beginning and 244.1MB in the end (delta: -67.3MB). Peak memory consumption was 10.4MB. Max. memory is 8.0GB. [2022-03-18 12:13:29,655 INFO L158 Benchmark]: Boogie Preprocessor took 24.47ms. Allocated memory is still 274.7MB. Free memory was 244.1MB in the beginning and 242.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-18 12:13:29,655 INFO L158 Benchmark]: RCFGBuilder took 295.45ms. Allocated memory is still 274.7MB. Free memory was 242.6MB in the beginning and 230.4MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-18 12:13:29,656 INFO L158 Benchmark]: TraceAbstraction took 37451.54ms. Allocated memory was 274.7MB in the beginning and 398.5MB in the end (delta: 123.7MB). Free memory was 230.0MB in the beginning and 355.0MB in the end (delta: -125.0MB). Peak memory consumption was 223.8MB. Max. memory is 8.0GB. [2022-03-18 12:13:29,657 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 204.5MB. Free memory is still 161.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 242.42ms. Allocated memory was 204.5MB in the beginning and 274.7MB in the end (delta: 70.3MB). Free memory was 176.7MB in the beginning and 244.1MB in the end (delta: -67.3MB). Peak memory consumption was 10.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.47ms. Allocated memory is still 274.7MB. Free memory was 244.1MB in the beginning and 242.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 295.45ms. Allocated memory is still 274.7MB. Free memory was 242.6MB in the beginning and 230.4MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 37451.54ms. Allocated memory was 274.7MB in the beginning and 398.5MB in the end (delta: 123.7MB). Free memory was 230.0MB in the beginning and 355.0MB in the end (delta: -125.0MB). Peak memory consumption was 223.8MB. 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: 96]: 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 5 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 37.4s, OverallIterations: 16, TraceHistogramMax: 92, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 17.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.7s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1314 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1314 mSDsluCounter, 873 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 549 mSDsCounter, 1290 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8539 IncrementalHoareTripleChecker+Invalid, 9829 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1290 mSolverCounterUnsat, 324 mSDtfsCounter, 8539 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2784 GetRequests, 1745 SyntacticMatches, 9 SemanticMatches, 1030 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17199 ImplicationChecksByTransitivity, 23.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=212occurred in iteration=15, InterpolantAutomatonStates: 553, 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, 16 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 13 PreInvPairs, 113 NumberOfFragments, 933 HoareAnnotationTreeSize, 13 FomulaSimplifications, 492 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 13 FomulaSimplificationsInter, 533 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 15.4s InterpolantComputationTime, 2083 NumberOfCodeBlocks, 2011 NumberOfCodeBlocksAsserted, 159 NumberOfCheckSat, 2880 ConstructedInterpolants, 0 QuantifiedInterpolants, 9385 SizeOfPredicates, 2 NumberOfNonLiveVariables, 2053 ConjunctsInSsa, 268 ConjunctsInUnsatCore, 30 InterpolantComputations, 9 PerfectInterpolantSequences, 31437/72314 InterpolantCoveringCapability, 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: 31]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 50 <= main__y) && \old(__return_720) == __return_720) && main__x <= 3 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 50 <= main__y) && main__x <= 4) && \old(__return_720) == __return_720 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: ((main__x <= 7 && main__y <= 50) && 50 <= main__y) && \old(__return_720) == __return_720 - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 50 <= main__y) && \old(__return_720) == __return_720) && main__x <= 5 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 50 <= main__y) && \old(__return_720) == __return_720) && main__x <= 6 - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((((((((((((((((((((((main__y <= 72 && 72 <= main__x) && 72 <= main__y) && \old(__return_720) == __return_720) && main__x <= 72) || ((((83 <= main__y && main__x <= 83) && main__y <= 83) && \old(__return_720) == __return_720) && 83 <= main__x)) || ((((75 <= main__x && main__x <= 75) && main__y <= 75) && \old(__return_720) == __return_720) && 75 <= main__y)) || ((((main__x <= 64 && 64 <= main__y) && \old(__return_720) == __return_720) && main__y <= 64) && 64 <= main__x)) || ((((61 <= main__x && main__x <= 61) && main__y <= 61) && 61 <= main__y) && \old(__return_720) == __return_720)) || ((((main__y <= 51 && main__x <= 51) && \old(__return_720) == __return_720) && 51 <= main__y) && 51 <= main__x)) || ((((76 <= main__x && \old(__return_720) == __return_720) && main__y <= 76) && main__x <= 76) && 76 <= main__y)) || ((((95 <= main__y && \old(__return_720) == __return_720) && main__x <= 95) && main__y <= 95) && 95 <= main__x)) || ((((main__x < 100 && main__y <= 99) && 99 <= main__y) && \old(__return_720) == __return_720) && 99 <= main__x)) || ((((main__x <= 73 && 73 <= main__y) && \old(__return_720) == __return_720) && main__y <= 73) && 73 <= main__x)) || ((((96 <= main__x && \old(__return_720) == __return_720) && main__y <= 96) && 96 <= main__y) && main__x <= 96)) || ((((main__x <= 92 && 92 <= main__x) && 92 <= main__y) && \old(__return_720) == __return_720) && main__y <= 92)) || ((((71 <= main__y && main__y <= 71) && main__x <= 71) && \old(__return_720) == __return_720) && 71 <= main__x)) || ((((main__x <= 56 && \old(__return_720) == __return_720) && 56 <= main__x) && 56 <= main__y) && main__y <= 56)) || ((((86 <= main__x && main__x <= 86) && 86 <= main__y) && \old(__return_720) == __return_720) && main__y <= 86)) || ((((main__y <= 57 && 57 <= main__x) && main__x <= 57) && \old(__return_720) == __return_720) && 57 <= main__y)) || ((((70 <= main__y && 70 <= main__x) && main__y <= 70) && \old(__return_720) == __return_720) && main__x <= 70)) || ((((77 <= main__x && main__y <= 77) && \old(__return_720) == __return_720) && 77 <= main__y) && main__x <= 77)) || ((((main__x <= 65 && 65 <= main__x) && 65 <= main__y) && \old(__return_720) == __return_720) && main__y <= 65)) || ((((89 <= main__y && main__y <= 89) && main__x <= 89) && \old(__return_720) == __return_720) && 89 <= main__x)) || ((((main__y <= 62 && \old(__return_720) == __return_720) && main__x <= 62) && 62 <= main__x) && 62 <= main__y)) || ((((main__y <= 67 && 67 <= main__y) && main__x <= 67) && \old(__return_720) == __return_720) && 67 <= main__x)) || (((100 <= main__x && 99 < main__y) && \old(__return_720) == __return_720) && main__y <= 100)) || ((((80 <= main__y && \old(__return_720) == __return_720) && main__y <= 80) && main__x <= 80) && 80 <= main__x)) || ((((main__y <= 69 && main__x <= 69) && 69 <= main__y) && \old(__return_720) == __return_720) && 69 <= main__x)) || ((((91 <= main__y && 91 <= main__x) && main__x <= 91) && \old(__return_720) == __return_720) && main__y <= 91)) || ((((main__y <= 90 && \old(__return_720) == __return_720) && main__x <= 90) && 90 <= main__x) && 90 <= main__y)) || ((((82 <= main__x && main__x <= 82) && \old(__return_720) == __return_720) && 82 <= main__y) && main__y <= 82)) || ((((main__y <= 85 && main__x <= 85) && 85 <= main__x) && \old(__return_720) == __return_720) && 85 <= main__y)) || ((((main__x <= 88 && main__y <= 88) && \old(__return_720) == __return_720) && 88 <= main__y) && 88 <= main__x)) || ((((main__x <= 59 && 59 <= main__x) && 59 <= main__y) && \old(__return_720) == __return_720) && main__y <= 59)) || ((((53 <= main__y && main__y <= 53) && \old(__return_720) == __return_720) && 53 <= main__x) && main__x <= 53)) || ((((main__y <= 66 && \old(__return_720) == __return_720) && main__x <= 66) && 66 <= main__x) && 66 <= main__y)) || ((((main__y <= 97 && 97 <= main__y) && \old(__return_720) == __return_720) && 97 <= main__x) && main__x < 98)) || ((((55 <= main__y && 55 <= main__x) && main__y <= 55) && \old(__return_720) == __return_720) && main__x <= 55)) || ((((52 <= main__y && 52 <= main__x) && \old(__return_720) == __return_720) && main__x <= 52) && main__y <= 52)) || ((((main__y <= 60 && main__x <= 60) && 60 <= main__y) && \old(__return_720) == __return_720) && 60 <= main__x)) || ((((74 <= main__y && main__x <= 74) && 74 <= main__x) && \old(__return_720) == __return_720) && main__y <= 74)) || ((((main__y <= 98 && 98 <= main__y) && 98 <= main__x) && main__x < 99) && \old(__return_720) == __return_720)) || ((((63 <= main__y && 63 <= main__x) && \old(__return_720) == __return_720) && main__x <= 63) && main__y <= 63)) || ((((main__y <= 84 && main__x <= 84) && 84 <= main__x) && 84 <= main__y) && \old(__return_720) == __return_720)) || (((main__y <= 50 && 50 <= main__y) && main__x <= 50) && \old(__return_720) == __return_720)) || ((((87 <= main__x && 87 <= main__y) && main__y <= 87) && \old(__return_720) == __return_720) && main__x <= 87)) || ((((main__y <= 78 && 78 <= main__x) && 78 <= main__y) && \old(__return_720) == __return_720) && main__x <= 78)) || ((((main__y <= 79 && main__x <= 79) && \old(__return_720) == __return_720) && 79 <= main__x) && 79 <= main__y)) || ((((81 <= main__x && main__y <= 81) && 81 <= main__y) && \old(__return_720) == __return_720) && main__x <= 81)) || ((((main__x <= 58 && main__y <= 58) && \old(__return_720) == __return_720) && 58 <= main__y) && 58 <= main__x)) || ((((main__y <= 68 && main__x <= 68) && 68 <= main__y) && 68 <= main__x) && \old(__return_720) == __return_720)) || ((((93 <= main__y && \old(__return_720) == __return_720) && 93 <= main__x) && main__x <= 93) && main__y <= 93)) || ((((94 <= main__y && main__x <= 94) && main__y <= 94) && \old(__return_720) == __return_720) && 94 <= main__x)) || ((((main__x <= 54 && \old(__return_720) == __return_720) && 54 <= main__y) && main__y <= 54) && 54 <= main__x) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 50 <= main__y) && \old(__return_720) == __return_720) && main__x <= 1 - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 50 <= main__y) && main__x <= 8) && \old(__return_720) == __return_720 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 50 <= main__y) && main__x <= 2) && \old(__return_720) == __return_720 RESULT: Ultimate proved your program to be correct! [2022-03-18 12:13:29,731 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...