/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 14:12:47,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:12:47,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:12:47,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:12:47,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:12:47,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:12:47,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:12:47,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:12:47,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:12:47,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:12:47,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:12:47,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:12:47,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:12:47,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:12:47,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:12:47,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:12:47,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:12:47,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:12:47,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:12:47,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:12:47,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:12:47,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:12:47,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:12:47,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:12:47,531 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:12:47,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:12:47,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:12:47,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:12:47,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:12:47,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:12:47,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:12:47,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:12:47,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:12:47,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:12:47,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:12:47,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:12:47,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:12:47,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:12:47,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:12:47,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:12:47,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:12:47,551 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 14:12:47,595 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:12:47,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:12:47,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:12:47,599 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:12:47,599 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:12:47,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:12:47,600 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:12:47,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:12:47,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:12:47,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:12:47,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:12:47,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:12:47,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:12:47,602 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:12:47,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:12:47,602 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:12:47,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:12:47,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:12:47,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:12:47,603 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:12:47,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:12:47,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:12:47,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:12:47,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:12:47,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:12:47,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:12:47,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:12:47,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:12:47,605 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:12:47,605 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:12:47,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:12:48,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:12:48,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:12:48,008 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:12:48,009 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:12:48,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 14:12:48,095 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab9fde1ea/17bfe3c84bcf4b028f51d9602964976c/FLAGf66762356 [2020-10-29 14:12:48,993 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:12:48,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 14:12:49,043 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab9fde1ea/17bfe3c84bcf4b028f51d9602964976c/FLAGf66762356 [2020-10-29 14:12:49,100 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab9fde1ea/17bfe3c84bcf4b028f51d9602964976c [2020-10-29 14:12:49,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:12:49,109 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:12:49,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:12:49,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:12:49,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:12:49,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:12:49" (1/1) ... [2020-10-29 14:12:49,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44bc2b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:12:49, skipping insertion in model container [2020-10-29 14:12:49,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:12:49" (1/1) ... [2020-10-29 14:12:49,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:12:49,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:12:51,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:12:51,144 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:12:52,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:12:52,132 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:12:52,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:12:52 WrapperNode [2020-10-29 14:12:52,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:12:52,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:12:52,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:12:52,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:12:52,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:12:52" (1/1) ... [2020-10-29 14:12:52,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:12:52" (1/1) ... [2020-10-29 14:12:52,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:12:52" (1/1) ... [2020-10-29 14:12:52,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:12:52" (1/1) ... [2020-10-29 14:12:52,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:12:52" (1/1) ... [2020-10-29 14:12:52,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:12:52" (1/1) ... [2020-10-29 14:12:52,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:12:52" (1/1) ... [2020-10-29 14:12:52,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:12:52,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:12:52,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:12:52,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:12:52,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:12:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:12:52,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:12:52,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:12:52,425 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:12:52,425 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 14:12:52,425 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:12:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:12:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:12:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:12:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:12:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 14:12:52,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 14:12:52,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 14:12:52,428 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 14:12:52,428 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 14:12:52,428 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 14:12:52,429 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 14:12:52,429 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 14:12:52,430 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 14:12:52,430 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 14:12:52,430 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 14:12:52,430 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 14:12:52,430 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 14:12:52,430 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 14:12:52,431 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:12:52,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:12:52,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:12:52,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:12:52,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:12:52,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:12:52,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:12:57,445 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:12:57,446 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 14:12:57,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:12:57 BoogieIcfgContainer [2020-10-29 14:12:57,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:12:57,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:12:57,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:12:57,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:12:57,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:12:49" (1/3) ... [2020-10-29 14:12:57,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89ea80e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:12:57, skipping insertion in model container [2020-10-29 14:12:57,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:12:52" (2/3) ... [2020-10-29 14:12:57,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89ea80e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:12:57, skipping insertion in model container [2020-10-29 14:12:57,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:12:57" (3/3) ... [2020-10-29 14:12:57,459 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 14:12:57,471 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:12:57,479 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:12:57,493 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:12:57,529 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:12:57,530 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:12:57,530 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:12:57,530 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:12:57,530 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:12:57,530 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:12:57,530 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:12:57,530 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:12:57,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states. [2020-10-29 14:12:57,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2020-10-29 14:12:57,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:12:57,624 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:12:57,624 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:12:57,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:12:57,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1245767728, now seen corresponding path program 1 times [2020-10-29 14:12:57,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:12:57,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877215290] [2020-10-29 14:12:57,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:12:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:12:59,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:00,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:02,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:02,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:03,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:03,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:03,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:04,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:04,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:13:04,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 502 [2020-10-29 14:13:04,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:13:04,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5251 [2020-10-29 14:13:04,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:13:04,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:13:04,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:13:04,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:13:04,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-29 14:13:04,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 14:13:06,171 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 430 [2020-10-29 14:13:06,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:13:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:13:06,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:06,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:13:06,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:13:06,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:13:06,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 14:13:06,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:13:06,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:13:06,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:13:06,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:13:06,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:13:06,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:13:06,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:13:06,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877215290] [2020-10-29 14:13:06,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:13:06,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:13:06,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677164066] [2020-10-29 14:13:06,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:13:06,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:13:06,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:13:06,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:13:06,754 INFO L87 Difference]: Start difference. First operand 1510 states. Second operand 5 states. [2020-10-29 14:13:22,737 WARN L193 SmtUtils]: Spent 861.00 ms on a formula simplification that was a NOOP. DAG size: 436 [2020-10-29 14:13:26,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:13:26,166 INFO L93 Difference]: Finished difference Result 4437 states and 8012 transitions. [2020-10-29 14:13:26,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:13:26,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 494 [2020-10-29 14:13:26,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:13:26,206 INFO L225 Difference]: With dead ends: 4437 [2020-10-29 14:13:26,206 INFO L226 Difference]: Without dead ends: 2968 [2020-10-29 14:13:26,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:13:26,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-10-29 14:13:26,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 2923. [2020-10-29 14:13:26,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2923 states. [2020-10-29 14:13:26,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 4806 transitions. [2020-10-29 14:13:26,479 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 4806 transitions. Word has length 494 [2020-10-29 14:13:26,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:13:26,481 INFO L481 AbstractCegarLoop]: Abstraction has 2923 states and 4806 transitions. [2020-10-29 14:13:26,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:13:26,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 4806 transitions. [2020-10-29 14:13:26,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-10-29 14:13:26,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:13:26,499 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:13:26,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:13:26,500 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:13:26,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:13:26,501 INFO L82 PathProgramCache]: Analyzing trace with hash 341864689, now seen corresponding path program 1 times [2020-10-29 14:13:26,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:13:26,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491573204] [2020-10-29 14:13:26,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:13:26,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:13:26,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:27,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:27,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:28,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:28,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:29,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:29,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:29,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:29,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:30,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:30,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:31,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:31,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:31,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:13:31,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 504 [2020-10-29 14:13:31,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:13:31,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-29 14:13:31,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:13:31,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:13:31,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:13:31,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 14:13:31,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-29 14:13:31,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:13:32,762 WARN L193 SmtUtils]: Spent 805.00 ms on a formula simplification that was a NOOP. DAG size: 430 [2020-10-29 14:13:32,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:13:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:13:32,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:32,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:13:32,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:13:32,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:13:32,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 14:13:32,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:13:32,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:13:32,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:13:32,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:13:32,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:13:32,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:13:33,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:13:33,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491573204] [2020-10-29 14:13:33,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:13:33,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:13:33,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107253974] [2020-10-29 14:13:33,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:13:33,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:13:33,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:13:33,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:13:33,306 INFO L87 Difference]: Start difference. First operand 2923 states and 4806 transitions. Second operand 4 states. [2020-10-29 14:13:51,302 WARN L193 SmtUtils]: Spent 872.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2020-10-29 14:13:54,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:13:54,280 INFO L93 Difference]: Finished difference Result 8452 states and 13844 transitions. [2020-10-29 14:13:54,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:13:54,282 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 496 [2020-10-29 14:13:54,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:13:54,314 INFO L225 Difference]: With dead ends: 8452 [2020-10-29 14:13:54,314 INFO L226 Difference]: Without dead ends: 5764 [2020-10-29 14:13:54,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:13:54,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5764 states. [2020-10-29 14:13:54,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5764 to 5721. [2020-10-29 14:13:54,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5721 states. [2020-10-29 14:13:54,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5721 states to 5721 states and 9377 transitions. [2020-10-29 14:13:54,621 INFO L78 Accepts]: Start accepts. Automaton has 5721 states and 9377 transitions. Word has length 496 [2020-10-29 14:13:54,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:13:54,623 INFO L481 AbstractCegarLoop]: Abstraction has 5721 states and 9377 transitions. [2020-10-29 14:13:54,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:13:54,623 INFO L276 IsEmpty]: Start isEmpty. Operand 5721 states and 9377 transitions. [2020-10-29 14:13:54,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2020-10-29 14:13:54,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:13:54,639 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:13:54,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:13:54,640 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:13:54,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:13:54,644 INFO L82 PathProgramCache]: Analyzing trace with hash 601680333, now seen corresponding path program 1 times [2020-10-29 14:13:54,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:13:54,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060763167] [2020-10-29 14:13:54,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:13:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:13:54,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:54,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:55,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:55,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:56,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:56,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:56,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:56,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:57,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:57,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:58,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:58,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:58,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:58,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:59,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:13:59,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 505 [2020-10-29 14:13:59,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 14:13:59,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-29 14:13:59,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:13:59,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:13:59,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:13:59,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 14:13:59,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-29 14:13:59,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:14:00,913 WARN L193 SmtUtils]: Spent 860.00 ms on a formula simplification that was a NOOP. DAG size: 430 [2020-10-29 14:14:00,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:14:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:14:00,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:00,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:14:00,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:14:00,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:14:00,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 14:14:00,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:14:00,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:14:00,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:14:00,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:14:00,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:14:00,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:14:01,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:14:01,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060763167] [2020-10-29 14:14:01,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:14:01,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:14:01,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748428443] [2020-10-29 14:14:01,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:14:01,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:14:01,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:14:01,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:14:01,418 INFO L87 Difference]: Start difference. First operand 5721 states and 9377 transitions. Second operand 4 states. [2020-10-29 14:14:18,851 WARN L193 SmtUtils]: Spent 871.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2020-10-29 14:14:21,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:14:21,936 INFO L93 Difference]: Finished difference Result 16674 states and 27249 transitions. [2020-10-29 14:14:21,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:14:21,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 497 [2020-10-29 14:14:21,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:14:21,990 INFO L225 Difference]: With dead ends: 16674 [2020-10-29 14:14:21,990 INFO L226 Difference]: Without dead ends: 11250 [2020-10-29 14:14:22,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:14:22,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11250 states. [2020-10-29 14:14:22,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11250 to 11209. [2020-10-29 14:14:22,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11209 states. [2020-10-29 14:14:22,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11209 states to 11209 states and 18298 transitions. [2020-10-29 14:14:22,636 INFO L78 Accepts]: Start accepts. Automaton has 11209 states and 18298 transitions. Word has length 497 [2020-10-29 14:14:22,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:14:22,636 INFO L481 AbstractCegarLoop]: Abstraction has 11209 states and 18298 transitions. [2020-10-29 14:14:22,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:14:22,637 INFO L276 IsEmpty]: Start isEmpty. Operand 11209 states and 18298 transitions. [2020-10-29 14:14:22,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2020-10-29 14:14:22,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:14:22,666 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:14:22,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 14:14:22,666 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:14:22,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:14:22,667 INFO L82 PathProgramCache]: Analyzing trace with hash 752172114, now seen corresponding path program 1 times [2020-10-29 14:14:22,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:14:22,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893114347] [2020-10-29 14:14:22,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:14:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:14:22,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:22,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:22,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:23,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:23,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:23,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:24,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:24,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:24,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:25,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:25,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:25,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:25,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:27,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:14:27,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 505 [2020-10-29 14:14:27,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:14:27,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 14:14:27,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:14:27,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:14:27,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:14:27,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:14:27,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-29 14:14:27,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:14:28,906 WARN L193 SmtUtils]: Spent 891.00 ms on a formula simplification that was a NOOP. DAG size: 430 [2020-10-29 14:14:28,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:14:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:14:28,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:28,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:14:28,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:14:28,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:14:28,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 14:14:28,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:14:28,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:14:28,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:14:28,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:14:28,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:14:28,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:14:29,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:14:29,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893114347] [2020-10-29 14:14:29,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:14:29,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:14:29,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521072448] [2020-10-29 14:14:29,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:14:29,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:14:29,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:14:29,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:14:29,405 INFO L87 Difference]: Start difference. First operand 11209 states and 18298 transitions. Second operand 5 states. [2020-10-29 14:14:42,892 WARN L193 SmtUtils]: Spent 967.00 ms on a formula simplification that was a NOOP. DAG size: 436 [2020-10-29 14:14:46,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:14:46,186 INFO L93 Difference]: Finished difference Result 32761 states and 53323 transitions. [2020-10-29 14:14:46,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:14:46,187 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 497 [2020-10-29 14:14:46,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:14:46,255 INFO L225 Difference]: With dead ends: 32761 [2020-10-29 14:14:46,256 INFO L226 Difference]: Without dead ends: 21955 [2020-10-29 14:14:46,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:14:46,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21955 states. [2020-10-29 14:14:47,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21955 to 21829. [2020-10-29 14:14:47,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21829 states. [2020-10-29 14:14:47,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21829 states to 21829 states and 35413 transitions. [2020-10-29 14:14:47,184 INFO L78 Accepts]: Start accepts. Automaton has 21829 states and 35413 transitions. Word has length 497 [2020-10-29 14:14:47,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:14:47,185 INFO L481 AbstractCegarLoop]: Abstraction has 21829 states and 35413 transitions. [2020-10-29 14:14:47,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:14:47,185 INFO L276 IsEmpty]: Start isEmpty. Operand 21829 states and 35413 transitions. [2020-10-29 14:14:47,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2020-10-29 14:14:47,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:14:47,236 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:14:47,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 14:14:47,236 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:14:47,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:14:47,237 INFO L82 PathProgramCache]: Analyzing trace with hash 2032457939, now seen corresponding path program 1 times [2020-10-29 14:14:47,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:14:47,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862010106] [2020-10-29 14:14:47,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:14:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:14:47,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:47,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:47,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:47,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:47,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:48,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:48,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:48,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:48,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:49,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:49,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:49,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:49,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:50,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:52,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:14:52,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 507 [2020-10-29 14:14:52,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 14:14:52,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 14:14:52,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:14:52,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:14:52,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:14:52,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-29 14:14:52,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 227 [2020-10-29 14:14:52,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:14:53,322 WARN L193 SmtUtils]: Spent 846.00 ms on a formula simplification that was a NOOP. DAG size: 430 [2020-10-29 14:14:53,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:14:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:14:53,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:53,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:14:53,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:14:53,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:14:53,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 14:14:53,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:14:53,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:14:53,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:14:53,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:14:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:14:53,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:14:53,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:14:53,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862010106] [2020-10-29 14:14:53,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:14:53,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:14:53,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060403414] [2020-10-29 14:14:53,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:14:53,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:14:53,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:14:53,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:14:53,765 INFO L87 Difference]: Start difference. First operand 21829 states and 35413 transitions. Second operand 4 states. [2020-10-29 14:15:12,133 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 435 [2020-10-29 14:15:15,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:15:15,504 INFO L93 Difference]: Finished difference Result 63209 states and 102143 transitions. [2020-10-29 14:15:15,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:15:15,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 499 [2020-10-29 14:15:15,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:15:15,599 INFO L225 Difference]: With dead ends: 63209 [2020-10-29 14:15:15,600 INFO L226 Difference]: Without dead ends: 42515 [2020-10-29 14:15:15,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:15:15,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42515 states. [2020-10-29 14:15:17,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42515 to 42365. [2020-10-29 14:15:17,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42365 states. [2020-10-29 14:15:17,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42365 states to 42365 states and 68301 transitions. [2020-10-29 14:15:17,202 INFO L78 Accepts]: Start accepts. Automaton has 42365 states and 68301 transitions. Word has length 499 [2020-10-29 14:15:17,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:15:17,202 INFO L481 AbstractCegarLoop]: Abstraction has 42365 states and 68301 transitions. [2020-10-29 14:15:17,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:15:17,203 INFO L276 IsEmpty]: Start isEmpty. Operand 42365 states and 68301 transitions. [2020-10-29 14:15:17,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2020-10-29 14:15:17,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:15:17,272 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:15:17,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 14:15:17,273 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:15:17,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:15:17,273 INFO L82 PathProgramCache]: Analyzing trace with hash -862189965, now seen corresponding path program 1 times [2020-10-29 14:15:17,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:15:17,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063756204] [2020-10-29 14:15:17,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:15:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:15:17,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:17,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:17,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:17,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:17,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:17,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:17,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:17,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:18,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:18,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:18,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:18,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:20,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:20,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:21,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:22,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:22,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:22,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:15:22,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 508 [2020-10-29 14:15:22,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-29 14:15:22,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-29 14:15:22,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:15:22,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:15:22,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:15:22,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 14:15:22,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-29 14:15:22,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:15:23,436 WARN L193 SmtUtils]: Spent 864.00 ms on a formula simplification that was a NOOP. DAG size: 430 [2020-10-29 14:15:23,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:15:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:15:23,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:23,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:15:23,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:15:23,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:15:23,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 14:15:23,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:15:23,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:15:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:15:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:15:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:15:23,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:15:23,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:15:23,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063756204] [2020-10-29 14:15:23,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:15:23,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:15:23,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896427277] [2020-10-29 14:15:23,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:15:23,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:15:23,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:15:23,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:15:23,762 INFO L87 Difference]: Start difference. First operand 42365 states and 68301 transitions. Second operand 4 states. [2020-10-29 14:15:44,044 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 435 [2020-10-29 14:15:47,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:15:47,767 INFO L93 Difference]: Finished difference Result 124939 states and 201108 transitions. [2020-10-29 14:15:47,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:15:47,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 500 [2020-10-29 14:15:47,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:15:47,911 INFO L225 Difference]: With dead ends: 124939 [2020-10-29 14:15:47,911 INFO L226 Difference]: Without dead ends: 83757 [2020-10-29 14:15:47,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:15:48,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83757 states. [2020-10-29 14:15:51,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83757 to 83647. [2020-10-29 14:15:51,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83647 states. [2020-10-29 14:15:51,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83647 states to 83647 states and 134298 transitions. [2020-10-29 14:15:51,755 INFO L78 Accepts]: Start accepts. Automaton has 83647 states and 134298 transitions. Word has length 500 [2020-10-29 14:15:51,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:15:51,756 INFO L481 AbstractCegarLoop]: Abstraction has 83647 states and 134298 transitions. [2020-10-29 14:15:51,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:15:51,756 INFO L276 IsEmpty]: Start isEmpty. Operand 83647 states and 134298 transitions. [2020-10-29 14:15:51,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2020-10-29 14:15:51,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:15:51,843 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:15:51,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 14:15:51,843 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:15:51,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:15:51,844 INFO L82 PathProgramCache]: Analyzing trace with hash -187956488, now seen corresponding path program 1 times [2020-10-29 14:15:51,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:15:51,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961710187] [2020-10-29 14:15:51,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:15:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:15:51,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:51,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:52,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:52,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:52,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:52,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:52,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:52,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:52,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:53,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:53,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:54,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:54,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:56,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:15:56,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 508 [2020-10-29 14:15:56,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:15:56,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 14:15:56,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:15:56,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:15:56,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:15:56,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:15:56,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-29 14:15:56,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:15:57,958 WARN L193 SmtUtils]: Spent 862.00 ms on a formula simplification that was a NOOP. DAG size: 430 [2020-10-29 14:15:57,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:15:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:15:57,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:57,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:15:57,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:15:57,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:15:57,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 14:15:57,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:15:57,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:15:57,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:15:57,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:15:57,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:15:57,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:15:58,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:15:58,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961710187] [2020-10-29 14:15:58,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:15:58,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:15:58,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726952192] [2020-10-29 14:15:58,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:15:58,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:15:58,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:15:58,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:15:58,283 INFO L87 Difference]: Start difference. First operand 83647 states and 134298 transitions. Second operand 5 states. [2020-10-29 14:16:14,152 WARN L193 SmtUtils]: Spent 905.00 ms on a formula simplification that was a NOOP. DAG size: 436 [2020-10-29 14:16:17,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:16:17,983 INFO L93 Difference]: Finished difference Result 182412 states and 294337 transitions. [2020-10-29 14:16:17,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:16:17,984 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 500 [2020-10-29 14:16:17,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:16:18,123 INFO L225 Difference]: With dead ends: 182412 [2020-10-29 14:16:18,124 INFO L226 Difference]: Without dead ends: 98870 [2020-10-29 14:16:18,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:16:18,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98870 states. [2020-10-29 14:16:21,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98870 to 83760. [2020-10-29 14:16:21,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83760 states. [2020-10-29 14:16:21,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83760 states to 83760 states and 134461 transitions. [2020-10-29 14:16:21,943 INFO L78 Accepts]: Start accepts. Automaton has 83760 states and 134461 transitions. Word has length 500 [2020-10-29 14:16:21,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:16:21,943 INFO L481 AbstractCegarLoop]: Abstraction has 83760 states and 134461 transitions. [2020-10-29 14:16:21,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:16:21,943 INFO L276 IsEmpty]: Start isEmpty. Operand 83760 states and 134461 transitions. [2020-10-29 14:16:22,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2020-10-29 14:16:22,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:16:22,262 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:16:22,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 14:16:22,263 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:16:22,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:16:22,263 INFO L82 PathProgramCache]: Analyzing trace with hash -101392199, now seen corresponding path program 1 times [2020-10-29 14:16:22,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:16:22,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791690204] [2020-10-29 14:16:22,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:16:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:16:22,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:22,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:22,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:22,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:22,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:22,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:23,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:23,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:23,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:24,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:24,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:24,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:25,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:25,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:25,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:26,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:26,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:26,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:27,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:27,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:27,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:16:27,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 511 [2020-10-29 14:16:27,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-29 14:16:27,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 14:16:27,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:16:27,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:16:27,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:16:27,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:16:27,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-29 14:16:27,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:16:28,430 WARN L193 SmtUtils]: Spent 851.00 ms on a formula simplification that was a NOOP. DAG size: 430 [2020-10-29 14:16:28,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:16:28,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:16:28,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:28,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:16:28,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:16:28,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:16:28,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 14:16:28,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:16:28,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:16:28,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:16:28,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:16:28,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:16:28,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:16:28,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:16:28,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791690204] [2020-10-29 14:16:28,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:16:28,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:16:28,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441382469] [2020-10-29 14:16:28,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:16:28,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:16:28,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:16:28,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:16:28,816 INFO L87 Difference]: Start difference. First operand 83760 states and 134461 transitions. Second operand 5 states.