/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/Problem11_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 04:59:31,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 04:59:31,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 04:59:31,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 04:59:31,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 04:59:31,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 04:59:31,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 04:59:31,481 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 04:59:31,501 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 04:59:31,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 04:59:31,501 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 04:59:31,501 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 04:59:31,502 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 04:59:31,502 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 04:59:31,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 04:59:31,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 04:59:31,502 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 04:59:31,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 04:59:31,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 04:59:31,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 04:59:31,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 04:59:31,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 04:59:31,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 04:59:31,503 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 04:59:31,503 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 04:59:31,503 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 04:59:31,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 04:59:31,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 04:59:31,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 04:59:31,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 04:59:31,504 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 04:59:31,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:59:31,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 04:59:31,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 04:59:31,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 04:59:31,504 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 04:59:31,504 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 04:59:31,504 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 04:59:31,504 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 04:59:31,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 04:59:31,504 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 04:59:31,505 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 04:59:31,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 04:59:31,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 04:59:31,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 04:59:31,688 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 04:59:31,688 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 04:59:31,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label16.c [2022-01-10 04:59:31,733 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3103b1bcb/46ae0f251d5642a9a5aa45f524ceced5/FLAG72e6c3df6 [2022-01-10 04:59:32,201 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 04:59:32,201 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label16.c [2022-01-10 04:59:32,211 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3103b1bcb/46ae0f251d5642a9a5aa45f524ceced5/FLAG72e6c3df6 [2022-01-10 04:59:32,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3103b1bcb/46ae0f251d5642a9a5aa45f524ceced5 [2022-01-10 04:59:32,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 04:59:32,525 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 04:59:32,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 04:59:32,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 04:59:32,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 04:59:32,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:59:32" (1/1) ... [2022-01-10 04:59:32,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42773cf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:32, skipping insertion in model container [2022-01-10 04:59:32,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:59:32" (1/1) ... [2022-01-10 04:59:32,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 04:59:32,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:59:32,747 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/Problem11_label16.c[6270,6283] [2022-01-10 04:59:32,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:59:32,945 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 04:59:32,976 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/Problem11_label16.c[6270,6283] [2022-01-10 04:59:33,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:59:33,101 INFO L208 MainTranslator]: Completed translation [2022-01-10 04:59:33,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:33 WrapperNode [2022-01-10 04:59:33,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 04:59:33,102 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 04:59:33,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 04:59:33,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 04:59:33,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:33" (1/1) ... [2022-01-10 04:59:33,131 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:33" (1/1) ... [2022-01-10 04:59:33,193 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 997 [2022-01-10 04:59:33,193 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 04:59:33,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 04:59:33,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 04:59:33,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 04:59:33,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:33" (1/1) ... [2022-01-10 04:59:33,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:33" (1/1) ... [2022-01-10 04:59:33,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:33" (1/1) ... [2022-01-10 04:59:33,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:33" (1/1) ... [2022-01-10 04:59:33,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:33" (1/1) ... [2022-01-10 04:59:33,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:33" (1/1) ... [2022-01-10 04:59:33,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:33" (1/1) ... [2022-01-10 04:59:33,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 04:59:33,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 04:59:33,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 04:59:33,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 04:59:33,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:33" (1/1) ... [2022-01-10 04:59:33,283 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:59:33,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 04:59:33,300 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 04:59:33,306 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 04:59:33,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 04:59:33,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 04:59:33,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 04:59:33,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 04:59:33,370 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 04:59:33,371 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 04:59:39,475 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 04:59:39,481 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 04:59:39,481 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 04:59:39,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:59:39 BoogieIcfgContainer [2022-01-10 04:59:39,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 04:59:39,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 04:59:39,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 04:59:39,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 04:59:39,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:59:32" (1/3) ... [2022-01-10 04:59:39,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ad9ae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:59:39, skipping insertion in model container [2022-01-10 04:59:39,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:59:33" (2/3) ... [2022-01-10 04:59:39,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ad9ae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:59:39, skipping insertion in model container [2022-01-10 04:59:39,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:59:39" (3/3) ... [2022-01-10 04:59:39,489 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label16.c [2022-01-10 04:59:39,493 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 04:59:39,493 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 04:59:39,535 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 04:59:39,539 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 04:59:39,539 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 04:59:39,551 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 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 04:59:39,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 04:59:39,556 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:59:39,556 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, 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 04:59:39,557 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:59:39,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:59:39,562 INFO L85 PathProgramCache]: Analyzing trace with hash 712930081, now seen corresponding path program 1 times [2022-01-10 04:59:39,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:59:39,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897104436] [2022-01-10 04:59:39,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:59:39,574 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:59:39,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:59:39,580 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 04:59:39,587 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 04:59:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:59:39,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:59:39,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:59:39,825 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 04:59:39,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:59:39,826 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:59:39,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1897104436] [2022-01-10 04:59:39,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1897104436] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:59:39,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:59:39,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:59:39,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814530852] [2022-01-10 04:59:39,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:59:39,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:59:39,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:59:39,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:59:39,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:59:39,850 INFO L87 Difference]: Start difference. First operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 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 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 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 04:59:46,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:59:46,111 INFO L93 Difference]: Finished difference Result 758 states and 1342 transitions. [2022-01-10 04:59:46,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:59:46,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 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 43 [2022-01-10 04:59:46,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:59:46,128 INFO L225 Difference]: With dead ends: 758 [2022-01-10 04:59:46,129 INFO L226 Difference]: Without dead ends: 410 [2022-01-10 04:59:46,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 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 04:59:46,133 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 182 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-01-10 04:59:46,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 220 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-01-10 04:59:46,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-01-10 04:59:46,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2022-01-10 04:59:46,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 1.4572127139364304) internal successors, (596), 409 states have internal predecessors, (596), 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 04:59:46,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 596 transitions. [2022-01-10 04:59:46,175 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 596 transitions. Word has length 43 [2022-01-10 04:59:46,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:59:46,176 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 596 transitions. [2022-01-10 04:59:46,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 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 04:59:46,176 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 596 transitions. [2022-01-10 04:59:46,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 04:59:46,178 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:59:46,179 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 04:59:46,198 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 04:59:46,384 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 04:59:46,385 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:59:46,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:59:46,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1685692488, now seen corresponding path program 1 times [2022-01-10 04:59:46,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:59:46,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267410658] [2022-01-10 04:59:46,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:59:46,387 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:59:46,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:59:46,388 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 04:59:46,388 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 04:59:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:59:46,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:59:46,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:59:46,721 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:59:46,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:59:46,722 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:59:46,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267410658] [2022-01-10 04:59:46,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1267410658] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:59:46,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:59:46,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:59:46,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950492073] [2022-01-10 04:59:46,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:59:46,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:59:46,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:59:46,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:59:46,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:59:46,724 INFO L87 Difference]: Start difference. First operand 410 states and 596 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 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 04:59:54,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:59:54,919 INFO L93 Difference]: Finished difference Result 1202 states and 1754 transitions. [2022-01-10 04:59:54,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:59:54,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 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 111 [2022-01-10 04:59:54,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:59:54,929 INFO L225 Difference]: With dead ends: 1202 [2022-01-10 04:59:54,929 INFO L226 Difference]: Without dead ends: 794 [2022-01-10 04:59:54,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 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 04:59:54,931 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 132 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:59:54,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 187 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-01-10 04:59:54,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-01-10 04:59:54,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 782. [2022-01-10 04:59:54,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 781 states have (on average 1.3469910371318823) internal successors, (1052), 781 states have internal predecessors, (1052), 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 04:59:54,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1052 transitions. [2022-01-10 04:59:54,959 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1052 transitions. Word has length 111 [2022-01-10 04:59:54,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:59:54,960 INFO L470 AbstractCegarLoop]: Abstraction has 782 states and 1052 transitions. [2022-01-10 04:59:54,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 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 04:59:54,960 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1052 transitions. [2022-01-10 04:59:54,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-10 04:59:54,962 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:59:54,963 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 04:59:54,973 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 04:59:55,170 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 04:59:55,171 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:59:55,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:59:55,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1178636452, now seen corresponding path program 1 times [2022-01-10 04:59:55,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:59:55,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102069338] [2022-01-10 04:59:55,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:59:55,173 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:59:55,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:59:55,174 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 04:59:55,176 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 04:59:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:59:55,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:59:55,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:59:55,527 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:59:55,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:59:55,527 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:59:55,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102069338] [2022-01-10 04:59:55,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102069338] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:59:55,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:59:55,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:59:55,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722370713] [2022-01-10 04:59:55,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:59:55,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:59:55,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:59:55,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:59:55,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:59:55,529 INFO L87 Difference]: Start difference. First operand 782 states and 1052 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 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 05:00:02,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:00:02,366 INFO L93 Difference]: Finished difference Result 1931 states and 2544 transitions. [2022-01-10 05:00:02,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:00:02,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 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 119 [2022-01-10 05:00:02,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:00:02,389 INFO L225 Difference]: With dead ends: 1931 [2022-01-10 05:00:02,389 INFO L226 Difference]: Without dead ends: 1151 [2022-01-10 05:00:02,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 117 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 05:00:02,391 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 112 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-01-10 05:00:02,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 194 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-01-10 05:00:02,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2022-01-10 05:00:02,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1150. [2022-01-10 05:00:02,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1149 states have (on average 1.2567449956483898) internal successors, (1444), 1149 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 05:00:02,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1444 transitions. [2022-01-10 05:00:02,417 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1444 transitions. Word has length 119 [2022-01-10 05:00:02,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:00:02,419 INFO L470 AbstractCegarLoop]: Abstraction has 1150 states and 1444 transitions. [2022-01-10 05:00:02,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 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 05:00:02,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1444 transitions. [2022-01-10 05:00:02,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-01-10 05:00:02,428 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:00:02,429 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 05:00:02,439 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 05:00:02,636 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 05:00:02,637 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:00:02,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:00:02,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1288394605, now seen corresponding path program 1 times [2022-01-10 05:00:02,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:00:02,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068037638] [2022-01-10 05:00:02,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:00:02,639 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:00:02,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:00:02,640 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 05:00:02,642 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 05:00:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:00:02,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:00:02,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:00:02,994 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:00:02,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:00:02,995 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:00:02,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068037638] [2022-01-10 05:00:02,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068037638] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:00:02,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:00:02,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 05:00:02,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759465972] [2022-01-10 05:00:02,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:00:02,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:00:02,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:00:02,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:00:02,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:00:02,997 INFO L87 Difference]: Start difference. First operand 1150 states and 1444 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 05:00:10,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:00:10,930 INFO L93 Difference]: Finished difference Result 1948 states and 2632 transitions. [2022-01-10 05:00:10,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:00:10,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 170 [2022-01-10 05:00:10,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:00:10,946 INFO L225 Difference]: With dead ends: 1948 [2022-01-10 05:00:10,946 INFO L226 Difference]: Without dead ends: 1542 [2022-01-10 05:00:10,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 168 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 05:00:10,955 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 192 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-01-10 05:00:10,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 322 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-01-10 05:00:10,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2022-01-10 05:00:10,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1539. [2022-01-10 05:00:10,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1539 states, 1538 states have (on average 1.2711313394018204) internal successors, (1955), 1538 states have internal predecessors, (1955), 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 05:00:10,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 1955 transitions. [2022-01-10 05:00:10,981 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 1955 transitions. Word has length 170 [2022-01-10 05:00:10,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:00:10,983 INFO L470 AbstractCegarLoop]: Abstraction has 1539 states and 1955 transitions. [2022-01-10 05:00:10,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 05:00:10,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 1955 transitions. [2022-01-10 05:00:10,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-01-10 05:00:10,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:00:10,987 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:00:10,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 05:00:11,194 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 05:00:11,195 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:00:11,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:00:11,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1394108373, now seen corresponding path program 1 times [2022-01-10 05:00:11,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:00:11,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392671819] [2022-01-10 05:00:11,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:00:11,197 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:00:11,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:00:11,198 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 05:00:11,206 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 05:00:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:00:11,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:00:11,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:00:11,696 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:00:11,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:00:11,696 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:00:11,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [392671819] [2022-01-10 05:00:11,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [392671819] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:00:11,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:00:11,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 05:00:11,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630496635] [2022-01-10 05:00:11,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:00:11,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:00:11,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:00:11,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:00:11,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:00:11,698 INFO L87 Difference]: Start difference. First operand 1539 states and 1955 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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 05:00:19,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:00:19,261 INFO L93 Difference]: Finished difference Result 3279 states and 4345 transitions. [2022-01-10 05:00:19,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:00:19,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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 223 [2022-01-10 05:00:19,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:00:19,277 INFO L225 Difference]: With dead ends: 3279 [2022-01-10 05:00:19,277 INFO L226 Difference]: Without dead ends: 2110 [2022-01-10 05:00:19,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 221 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 05:00:19,280 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 136 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-01-10 05:00:19,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 340 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-01-10 05:00:19,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2022-01-10 05:00:19,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 2097. [2022-01-10 05:00:19,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2097 states, 2096 states have (on average 1.2533396946564885) internal successors, (2627), 2096 states have internal predecessors, (2627), 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 05:00:19,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2097 states to 2097 states and 2627 transitions. [2022-01-10 05:00:19,310 INFO L78 Accepts]: Start accepts. Automaton has 2097 states and 2627 transitions. Word has length 223 [2022-01-10 05:00:19,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:00:19,310 INFO L470 AbstractCegarLoop]: Abstraction has 2097 states and 2627 transitions. [2022-01-10 05:00:19,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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 05:00:19,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2097 states and 2627 transitions. [2022-01-10 05:00:19,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-01-10 05:00:19,313 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:00:19,313 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:00:19,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 05:00:19,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:00:19,524 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:00:19,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:00:19,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1976405541, now seen corresponding path program 1 times [2022-01-10 05:00:19,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:00:19,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802988047] [2022-01-10 05:00:19,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:00:19,526 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:00:19,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:00:19,528 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:00:19,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 05:00:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:00:19,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 05:00:19,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:00:21,179 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 81 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:00:21,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 05:00:23,646 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:00:23,646 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:00:23,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802988047] [2022-01-10 05:00:23,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [802988047] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 05:00:23,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 05:00:23,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-10 05:00:23,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851490153] [2022-01-10 05:00:23,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:00:23,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:00:23,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:00:23,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:00:23,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 05:00:23,648 INFO L87 Difference]: Start difference. First operand 2097 states and 2627 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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)