/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-19 22:42:44,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 22:42:44,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 22:42:44,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-19 22:42:44,390 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-03-19 22:42:44,423 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 22:42:44,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 22:42:44,424 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-19 22:42:44,424 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-19 22:42:44,425 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-19 22:42:44,426 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-19 22:42:44,426 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-19 22:42:44,426 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-19 22:42:44,426 INFO L138 SettingsManager]: * Use SBE=true [2022-03-19 22:42:44,427 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 22:42:44,427 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-19 22:42:44,427 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 22:42:44,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-19 22:42:44,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 22:42:44,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 22:42:44,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 22:42:44,428 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 22:42:44,428 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-19 22:42:44,428 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 22:42:44,428 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 22:42:44,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 22:42:44,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 22:42:44,429 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 22:42:44,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 22:42:44,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 22:42:44,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 22:42:44,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-19 22:42:44,429 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-19 22:42:44,429 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-19 22:42:44,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-19 22:42:44,430 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-19 22:42:44,430 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-03-19 22:42:44,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 22:42:44,430 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 22:42:44,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 22:42:44,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 22:42:44,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 22:42:44,649 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 22:42:44,650 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 22:42:44,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2022-03-19 22:42:44,710 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e14c30102/17a3141fd210432db95559ceb96416a0/FLAGd54dd9eaa [2022-03-19 22:42:45,120 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 22:42:45,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2022-03-19 22:42:45,126 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e14c30102/17a3141fd210432db95559ceb96416a0/FLAGd54dd9eaa [2022-03-19 22:42:45,134 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e14c30102/17a3141fd210432db95559ceb96416a0 [2022-03-19 22:42:45,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 22:42:45,136 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-19 22:42:45,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 22:42:45,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 22:42:45,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 22:42:45,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 10:42:45" (1/1) ... [2022-03-19 22:42:45,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39d3ec23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:42:45, skipping insertion in model container [2022-03-19 22:42:45,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 10:42:45" (1/1) ... [2022-03-19 22:42:45,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 22:42:45,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 22:42:45,369 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c[15516,15529] [2022-03-19 22:42:45,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 22:42:45,380 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 22:42:45,428 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c[15516,15529] [2022-03-19 22:42:45,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 22:42:45,443 INFO L208 MainTranslator]: Completed translation [2022-03-19 22:42:45,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:42:45 WrapperNode [2022-03-19 22:42:45,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 22:42:45,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 22:42:45,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 22:42:45,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 22:42:45,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:42:45" (1/1) ... [2022-03-19 22:42:45,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:42:45" (1/1) ... [2022-03-19 22:42:45,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:42:45" (1/1) ... [2022-03-19 22:42:45,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:42:45" (1/1) ... [2022-03-19 22:42:45,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:42:45" (1/1) ... [2022-03-19 22:42:45,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:42:45" (1/1) ... [2022-03-19 22:42:45,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:42:45" (1/1) ... [2022-03-19 22:42:45,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 22:42:45,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 22:42:45,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 22:42:45,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 22:42:45,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:42:45" (1/1) ... [2022-03-19 22:42:45,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 22:42:45,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 22:42:45,548 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-19 22:42:45,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-19 22:42:45,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 22:42:45,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 22:42:45,581 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 22:42:45,581 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 22:42:45,584 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-19 22:42:45,584 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 22:42:45,584 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 22:42:45,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 22:42:45,584 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2022-03-19 22:42:45,585 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2022-03-19 22:42:45,585 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 22:42:45,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-19 22:42:45,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-19 22:42:45,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 22:42:45,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-19 22:42:45,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 22:42:45,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 22:42:45,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 22:42:45,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 22:42:45,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 22:42:45,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-19 22:42:45,698 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 22:42:45,699 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 22:42:46,162 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 22:42:46,168 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 22:42:46,168 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-19 22:42:46,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 10:42:46 BoogieIcfgContainer [2022-03-19 22:42:46,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 22:42:46,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 22:42:46,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 22:42:46,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 22:42:46,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 10:42:45" (1/3) ... [2022-03-19 22:42:46,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@783c02d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 10:42:46, skipping insertion in model container [2022-03-19 22:42:46,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:42:45" (2/3) ... [2022-03-19 22:42:46,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@783c02d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 10:42:46, skipping insertion in model container [2022-03-19 22:42:46,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 10:42:46" (3/3) ... [2022-03-19 22:42:46,175 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lhb-reducer.c [2022-03-19 22:42:46,178 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-19 22:42:46,179 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 22:42:46,219 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 22:42:46,224 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-19 22:42:46,224 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 22:42:46,241 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 49 states have (on average 1.8775510204081634) internal successors, (92), 50 states have internal predecessors, (92), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-19 22:42:46,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-03-19 22:42:46,246 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 22:42:46,246 INFO L499 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, 1, 1, 1, 1, 1] [2022-03-19 22:42:46,247 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 22:42:46,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 22:42:46,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1054632774, now seen corresponding path program 1 times [2022-03-19 22:42:46,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 22:42:46,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124900771] [2022-03-19 22:42:46,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 22:42:46,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 22:42:46,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:42:46,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 22:42:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:42:46,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 22:42:46,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 22:42:46,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124900771] [2022-03-19 22:42:46,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124900771] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 22:42:46,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 22:42:46,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-19 22:42:46,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616171595] [2022-03-19 22:42:46,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 22:42:46,982 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-19 22:42:46,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 22:42:47,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-19 22:42:47,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-03-19 22:42:47,007 INFO L87 Difference]: Start difference. First operand has 55 states, 49 states have (on average 1.8775510204081634) internal successors, (92), 50 states have internal predecessors, (92), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 18 states, 18 states have (on average 2.5) internal successors, (45), 17 states have internal predecessors, (45), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 22:42:47,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 22:42:47,584 INFO L93 Difference]: Finished difference Result 92 states and 136 transitions. [2022-03-19 22:42:47,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-19 22:42:47,586 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5) internal successors, (45), 17 states have internal predecessors, (45), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2022-03-19 22:42:47,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 22:42:47,594 INFO L225 Difference]: With dead ends: 92 [2022-03-19 22:42:47,594 INFO L226 Difference]: Without dead ends: 57 [2022-03-19 22:42:47,597 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-03-19 22:42:47,602 INFO L913 BasicCegarLoop]: 63 mSDtfsCounter, 120 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-19 22:42:47,602 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 717 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-19 22:42:47,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-03-19 22:42:47,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2022-03-19 22:42:47,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 50 states have (on average 1.02) internal successors, (51), 50 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 22:42:47,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2022-03-19 22:42:47,629 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 48 [2022-03-19 22:42:47,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 22:42:47,630 INFO L478 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2022-03-19 22:42:47,630 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5) internal successors, (45), 17 states have internal predecessors, (45), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 22:42:47,630 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2022-03-19 22:42:47,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-19 22:42:47,631 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 22:42:47,632 INFO L499 BasicCegarLoop]: trace histogram [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] [2022-03-19 22:42:47,632 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-19 22:42:47,632 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 22:42:47,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 22:42:47,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1470519801, now seen corresponding path program 1 times [2022-03-19 22:42:47,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 22:42:47,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365451342] [2022-03-19 22:42:47,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 22:42:47,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 22:42:47,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:42:48,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 22:42:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:42:48,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 22:42:48,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 22:42:48,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365451342] [2022-03-19 22:42:48,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365451342] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 22:42:48,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709044028] [2022-03-19 22:42:48,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 22:42:48,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 22:42:48,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 22:42:48,019 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 22:42:48,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-19 22:42:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:42:48,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-19 22:42:48,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 22:42:48,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 22:42:48,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 22:42:48,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 22:42:48,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709044028] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 22:42:48,883 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 22:42:48,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 14] total 32 [2022-03-19 22:42:48,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212129785] [2022-03-19 22:42:48,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-19 22:42:48,884 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-19 22:42:48,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 22:42:48,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-19 22:42:48,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=751, Unknown=0, NotChecked=0, Total=992 [2022-03-19 22:42:48,887 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand has 32 states, 32 states have (on average 3.59375) internal successors, (115), 31 states have internal predecessors, (115), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 22:42:53,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 22:42:53,851 INFO L93 Difference]: Finished difference Result 119 states and 130 transitions. [2022-03-19 22:42:53,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-19 22:42:53,851 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.59375) internal successors, (115), 31 states have internal predecessors, (115), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2022-03-19 22:42:53,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 22:42:53,852 INFO L225 Difference]: With dead ends: 119 [2022-03-19 22:42:53,852 INFO L226 Difference]: Without dead ends: 116 [2022-03-19 22:42:53,853 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=690, Invalid=2066, Unknown=0, NotChecked=0, Total=2756 [2022-03-19 22:42:53,854 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 530 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-19 22:42:53,854 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 281 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-19 22:42:53,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-03-19 22:42:53,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2022-03-19 22:42:53,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 110 states have (on average 1.009090909090909) internal successors, (111), 110 states have internal predecessors, (111), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 22:42:53,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2022-03-19 22:42:53,863 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 53 [2022-03-19 22:42:53,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 22:42:53,866 INFO L478 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2022-03-19 22:42:53,866 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.59375) internal successors, (115), 31 states have internal predecessors, (115), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 22:42:53,866 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2022-03-19 22:42:53,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-03-19 22:42:53,869 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 22:42:53,869 INFO L499 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 22:42:53,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-19 22:42:54,103 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 22:42:54,103 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 22:42:54,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 22:42:54,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1546768967, now seen corresponding path program 2 times [2022-03-19 22:42:54,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 22:42:54,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482088234] [2022-03-19 22:42:54,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 22:42:54,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 22:42:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:42:54,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 22:42:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:42:54,883 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 22:42:54,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 22:42:54,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482088234] [2022-03-19 22:42:54,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482088234] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 22:42:54,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315489849] [2022-03-19 22:42:54,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 22:42:54,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 22:42:54,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 22:42:54,885 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 22:42:54,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-19 22:42:55,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 22:42:55,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 22:42:55,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 1341 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-19 22:42:55,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 22:42:55,620 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 22:42:55,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 22:42:56,643 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 22:42:56,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315489849] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 22:42:56,644 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 22:42:56,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 26, 26] total 56 [2022-03-19 22:42:56,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662127719] [2022-03-19 22:42:56,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-19 22:42:56,645 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-03-19 22:42:56,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 22:42:56,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-03-19 22:42:56,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=739, Invalid=2341, Unknown=0, NotChecked=0, Total=3080 [2022-03-19 22:42:56,647 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand has 56 states, 56 states have (on average 4.196428571428571) internal successors, (235), 55 states have internal predecessors, (235), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 22:43:47,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 22:43:47,242 INFO L93 Difference]: Finished difference Result 219 states and 238 transitions. [2022-03-19 22:43:47,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-19 22:43:47,242 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 4.196428571428571) internal successors, (235), 55 states have internal predecessors, (235), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2022-03-19 22:43:47,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 22:43:47,244 INFO L225 Difference]: With dead ends: 219 [2022-03-19 22:43:47,244 INFO L226 Difference]: Without dead ends: 216 [2022-03-19 22:43:47,260 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 202 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 50.5s TimeCoverageRelationStatistics Valid=2215, Invalid=7097, Unknown=0, NotChecked=0, Total=9312 [2022-03-19 22:43:47,261 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 1205 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 2082 mSolverCounterSat, 617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1205 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 2699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 2082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-19 22:43:47,261 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1205 Valid, 747 Invalid, 2699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [617 Valid, 2082 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-19 22:43:47,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-03-19 22:43:47,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 214. [2022-03-19 22:43:47,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 210 states have (on average 1.0047619047619047) internal successors, (211), 210 states have internal predecessors, (211), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 22:43:47,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 214 transitions. [2022-03-19 22:43:47,315 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 214 transitions. Word has length 113 [2022-03-19 22:43:47,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 22:43:47,316 INFO L478 AbstractCegarLoop]: Abstraction has 214 states and 214 transitions. [2022-03-19 22:43:47,316 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 4.196428571428571) internal successors, (235), 55 states have internal predecessors, (235), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 22:43:47,316 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 214 transitions. [2022-03-19 22:43:47,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-03-19 22:43:47,320 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 22:43:47,320 INFO L499 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 22:43:47,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-19 22:43:47,520 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-19 22:43:47,521 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 22:43:47,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 22:43:47,522 INFO L85 PathProgramCache]: Analyzing trace with hash -331389959, now seen corresponding path program 3 times [2022-03-19 22:43:47,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 22:43:47,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080042353] [2022-03-19 22:43:47,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 22:43:47,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 22:43:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:43:49,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 22:43:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:43:49,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2739 backedges. 99 proven. 2640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 22:43:49,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 22:43:49,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080042353] [2022-03-19 22:43:49,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080042353] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 22:43:49,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405666705] [2022-03-19 22:43:49,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-19 22:43:49,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 22:43:49,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 22:43:49,899 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 22:43:49,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-19 22:43:50,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-19 22:43:50,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 22:43:50,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 923 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-19 22:43:50,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 22:43:50,965 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-19 22:43:50,965 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23