/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 05:40:07,740 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 05:40:07,742 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 05:40:07,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 05:40:07,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 05:40:07,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 05:40:07,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 05:40:07,875 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 05:40:07,911 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 05:40:07,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 05:40:07,911 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 05:40:07,911 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 05:40:07,912 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 05:40:07,912 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 05:40:07,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 05:40:07,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 05:40:07,913 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 05:40:07,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 05:40:07,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 05:40:07,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 05:40:07,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 05:40:07,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 05:40:07,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 05:40:07,914 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 05:40:07,914 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 05:40:07,914 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 05:40:07,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 05:40:07,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 05:40:07,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 05:40:07,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 05:40:07,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 05:40:07,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:40:07,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 05:40:07,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 05:40:07,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 05:40:07,919 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 05:40:07,920 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 05:40:07,920 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 05:40:07,920 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 05:40:07,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 05:40:07,920 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 05:40:07,920 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 05:40:08,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 05:40:08,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 05:40:08,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 05:40:08,209 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 05:40:08,211 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 05:40:08,211 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label38.c [2022-01-10 05:40:08,268 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81f1cbe82/4c021665119348f0ab150ece7c433e6e/FLAG7f42002fd [2022-01-10 05:40:08,840 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 05:40:08,840 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label38.c [2022-01-10 05:40:08,857 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81f1cbe82/4c021665119348f0ab150ece7c433e6e/FLAG7f42002fd [2022-01-10 05:40:09,006 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81f1cbe82/4c021665119348f0ab150ece7c433e6e [2022-01-10 05:40:09,008 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 05:40:09,009 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 05:40:09,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 05:40:09,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 05:40:09,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 05:40:09,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:40:09" (1/1) ... [2022-01-10 05:40:09,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49534350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:40:09, skipping insertion in model container [2022-01-10 05:40:09,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:40:09" (1/1) ... [2022-01-10 05:40:09,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 05:40:09,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 05:40:09,244 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label38.c[2385,2398] [2022-01-10 05:40:09,692 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:40:09,700 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 05:40:09,719 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label38.c[2385,2398] [2022-01-10 05:40:09,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:40:09,960 INFO L208 MainTranslator]: Completed translation [2022-01-10 05:40:09,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:40:09 WrapperNode [2022-01-10 05:40:09,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 05:40:09,962 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 05:40:09,962 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 05:40:09,962 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 05:40:09,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:40:09" (1/1) ... [2022-01-10 05:40:10,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:40:09" (1/1) ... [2022-01-10 05:40:10,098 INFO L137 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4128 [2022-01-10 05:40:10,098 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 05:40:10,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 05:40:10,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 05:40:10,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 05:40:10,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:40:09" (1/1) ... [2022-01-10 05:40:10,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:40:09" (1/1) ... [2022-01-10 05:40:10,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:40:09" (1/1) ... [2022-01-10 05:40:10,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:40:09" (1/1) ... [2022-01-10 05:40:10,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:40:09" (1/1) ... [2022-01-10 05:40:10,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:40:09" (1/1) ... [2022-01-10 05:40:10,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:40:09" (1/1) ... [2022-01-10 05:40:10,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 05:40:10,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 05:40:10,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 05:40:10,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 05:40:10,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:40:09" (1/1) ... [2022-01-10 05:40:10,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:40:10,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 05:40:10,333 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) [2022-01-10 05:40:10,371 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 [2022-01-10 05:40:10,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 05:40:10,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 05:40:10,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 05:40:10,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 05:40:10,467 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 05:40:10,468 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 05:40:20,879 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 05:40:20,891 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 05:40:20,891 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 05:40:20,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:40:20 BoogieIcfgContainer [2022-01-10 05:40:20,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 05:40:20,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 05:40:20,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 05:40:20,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 05:40:20,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:40:09" (1/3) ... [2022-01-10 05:40:20,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1096deaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:40:20, skipping insertion in model container [2022-01-10 05:40:20,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:40:09" (2/3) ... [2022-01-10 05:40:20,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1096deaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:40:20, skipping insertion in model container [2022-01-10 05:40:20,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:40:20" (3/3) ... [2022-01-10 05:40:20,899 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label38.c [2022-01-10 05:40:20,902 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 05:40:20,902 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 05:40:20,948 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 05:40:20,953 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 05:40:20,953 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 05:40:20,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 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) [2022-01-10 05:40:20,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 05:40:20,977 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:40:20,977 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:40:20,978 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:40:20,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:40:20,981 INFO L85 PathProgramCache]: Analyzing trace with hash -279853278, now seen corresponding path program 1 times [2022-01-10 05:40:20,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:40:20,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750464277] [2022-01-10 05:40:20,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:40:20,990 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:40:20,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:40:21,001 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:40:21,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 05:40:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:40:21,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:40:21,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:40:21,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:40:21,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:40:21,183 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:40:21,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750464277] [2022-01-10 05:40:21,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750464277] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:40:21,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:40:21,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:40:21,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372862920] [2022-01-10 05:40:21,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:40:21,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:40:21,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:40:21,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:40:21,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:40:21,219 INFO L87 Difference]: Start difference. First operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 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) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 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) [2022-01-10 05:40:36,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:40:36,886 INFO L93 Difference]: Finished difference Result 2221 states and 4282 transitions. [2022-01-10 05:40:36,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:40:36,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 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) Word has length 20 [2022-01-10 05:40:36,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:40:36,915 INFO L225 Difference]: With dead ends: 2221 [2022-01-10 05:40:36,915 INFO L226 Difference]: Without dead ends: 1384 [2022-01-10 05:40:36,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:40:36,946 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 775 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2275 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 2739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 2275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2022-01-10 05:40:36,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 487 Invalid, 2739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 2275 Invalid, 0 Unknown, 0 Unchecked, 15.5s Time] [2022-01-10 05:40:36,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2022-01-10 05:40:37,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1384. [2022-01-10 05:40:37,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 1.5994215473608098) internal successors, (2212), 1383 states have internal predecessors, (2212), 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) [2022-01-10 05:40:37,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2212 transitions. [2022-01-10 05:40:37,023 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2212 transitions. Word has length 20 [2022-01-10 05:40:37,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:40:37,023 INFO L470 AbstractCegarLoop]: Abstraction has 1384 states and 2212 transitions. [2022-01-10 05:40:37,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 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) [2022-01-10 05:40:37,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2212 transitions. [2022-01-10 05:40:37,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 05:40:37,025 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:40:37,026 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:40:37,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 05:40:37,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:40:37,232 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:40:37,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:40:37,234 INFO L85 PathProgramCache]: Analyzing trace with hash -55376494, now seen corresponding path program 1 times [2022-01-10 05:40:37,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:40:37,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384431407] [2022-01-10 05:40:37,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:40:37,236 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:40:37,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:40:37,237 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:40:37,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 05:40:37,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:40:37,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:40:37,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:40:37,489 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:40:37,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:40:37,490 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:40:37,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384431407] [2022-01-10 05:40:37,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [384431407] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:40:37,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:40:37,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:40:37,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975887930] [2022-01-10 05:40:37,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:40:37,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:40:37,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:40:37,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:40:37,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:40:37,493 INFO L87 Difference]: Start difference. First operand 1384 states and 2212 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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) [2022-01-10 05:40:52,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:40:52,733 INFO L93 Difference]: Finished difference Result 3456 states and 5737 transitions. [2022-01-10 05:40:52,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:40:52,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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) Word has length 85 [2022-01-10 05:40:52,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:40:52,740 INFO L225 Difference]: With dead ends: 3456 [2022-01-10 05:40:52,740 INFO L226 Difference]: Without dead ends: 2074 [2022-01-10 05:40:52,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:40:52,742 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 714 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 2619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2022-01-10 05:40:52,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [714 Valid, 529 Invalid, 2619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 15.1s Time] [2022-01-10 05:40:52,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2022-01-10 05:40:52,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 2074. [2022-01-10 05:40:52,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2074 states, 2073 states have (on average 1.3685479980704294) internal successors, (2837), 2073 states have internal predecessors, (2837), 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) [2022-01-10 05:40:52,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 2837 transitions. [2022-01-10 05:40:52,775 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 2837 transitions. Word has length 85 [2022-01-10 05:40:52,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:40:52,777 INFO L470 AbstractCegarLoop]: Abstraction has 2074 states and 2837 transitions. [2022-01-10 05:40:52,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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) [2022-01-10 05:40:52,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 2837 transitions. [2022-01-10 05:40:52,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 05:40:52,787 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:40:52,787 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:40:52,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-01-10 05:40:52,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:40:52,994 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:40:52,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:40:52,995 INFO L85 PathProgramCache]: Analyzing trace with hash -389371060, now seen corresponding path program 1 times [2022-01-10 05:40:52,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:40:52,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998655395] [2022-01-10 05:40:52,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:40:52,996 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:40:52,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:40:53,007 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:40:53,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 05:40:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:40:53,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 05:40:53,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:40:53,525 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:40:53,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:40:53,525 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:40:53,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998655395] [2022-01-10 05:40:53,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998655395] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:40:53,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:40:53,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:40:53,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980277912] [2022-01-10 05:40:53,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:40:53,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:40:53,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:40:53,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:40:53,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:40:53,527 INFO L87 Difference]: Start difference. First operand 2074 states and 2837 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 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) [2022-01-10 05:41:04,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:41:04,446 INFO L93 Difference]: Finished difference Result 4836 states and 6392 transitions. [2022-01-10 05:41:04,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:41:04,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 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) Word has length 113 [2022-01-10 05:41:04,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:41:04,455 INFO L225 Difference]: With dead ends: 4836 [2022-01-10 05:41:04,456 INFO L226 Difference]: Without dead ends: 2764 [2022-01-10 05:41:04,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:41:04,458 INFO L933 BasicCegarLoop]: 623 mSDtfsCounter, 600 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2007 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-01-10 05:41:04,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 629 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2007 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2022-01-10 05:41:04,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2022-01-10 05:41:04,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2764. [2022-01-10 05:41:04,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2764 states, 2763 states have (on average 1.2808541440463264) internal successors, (3539), 2763 states have internal predecessors, (3539), 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) [2022-01-10 05:41:04,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 3539 transitions. [2022-01-10 05:41:04,511 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 3539 transitions. Word has length 113 [2022-01-10 05:41:04,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:41:04,512 INFO L470 AbstractCegarLoop]: Abstraction has 2764 states and 3539 transitions. [2022-01-10 05:41:04,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 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) [2022-01-10 05:41:04,512 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 3539 transitions. [2022-01-10 05:41:04,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2022-01-10 05:41:04,515 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:41:04,515 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:41:04,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 05:41:04,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:41:04,716 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:41:04,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:41:04,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1137187259, now seen corresponding path program 1 times [2022-01-10 05:41:04,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:41:04,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047287958] [2022-01-10 05:41:04,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:41:04,719 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:41:04,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:41:04,732 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:41:04,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 05:41:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:41:04,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 05:41:04,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:41:06,006 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:41:06,006 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:41:06,006 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:41:06,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047287958] [2022-01-10 05:41:06,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1047287958] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:41:06,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:41:06,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 05:41:06,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194827040] [2022-01-10 05:41:06,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:41:06,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 05:41:06,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:41:06,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 05:41:06,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 05:41:06,008 INFO L87 Difference]: Start difference. First operand 2764 states and 3539 transitions. Second operand has 4 states, 4 states have (on average 73.75) internal successors, (295), 3 states have internal predecessors, (295), 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) [2022-01-10 05:41:17,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:41:17,784 INFO L93 Difference]: Finished difference Result 4199 states and 5707 transitions. [2022-01-10 05:41:17,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 05:41:17,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 3 states have internal predecessors, (295), 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) Word has length 295 [2022-01-10 05:41:17,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:41:17,792 INFO L225 Difference]: With dead ends: 4199 [2022-01-10 05:41:17,792 INFO L226 Difference]: Without dead ends: 2074 [2022-01-10 05:41:17,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 05:41:17,795 INFO L933 BasicCegarLoop]: 625 mSDtfsCounter, 515 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3365 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 3373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 3365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-01-10 05:41:17,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 640 Invalid, 3373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 3365 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2022-01-10 05:41:17,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2022-01-10 05:41:17,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 2074. [2022-01-10 05:41:17,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2074 states, 2073 states have (on average 1.3555233960443802) internal successors, (2810), 2073 states have internal predecessors, (2810), 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) [2022-01-10 05:41:17,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 2810 transitions. [2022-01-10 05:41:17,824 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 2810 transitions. Word has length 295 [2022-01-10 05:41:17,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:41:17,824 INFO L470 AbstractCegarLoop]: Abstraction has 2074 states and 2810 transitions. [2022-01-10 05:41:17,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 3 states have internal predecessors, (295), 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) [2022-01-10 05:41:17,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 2810 transitions. [2022-01-10 05:41:17,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-01-10 05:41:17,827 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:41:17,827 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:41:17,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-01-10 05:41:18,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:41:18,035 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:41:18,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:41:18,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1197996728, now seen corresponding path program 1 times [2022-01-10 05:41:18,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:41:18,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847577952] [2022-01-10 05:41:18,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:41:18,040 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:41:18,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:41:18,041 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:41:18,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 05:41:18,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:41:18,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:41:18,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:41:18,703 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:41:18,703 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:41:18,703 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:41:18,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847577952] [2022-01-10 05:41:18,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [847577952] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:41:18,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:41:18,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:41:18,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150734128] [2022-01-10 05:41:18,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:41:18,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:41:18,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:41:18,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:41:18,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:41:18,705 INFO L87 Difference]: Start difference. First operand 2074 states and 2810 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 2 states have internal predecessors, (319), 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)