/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=SHALLOWEST --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_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:40:43,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:40:43,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:40:43,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:40:43,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:40:43,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:40:43,400 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:40:43,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:40:43,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:40:43,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:40:43,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:40:43,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:40:43,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:40:43,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:40:43,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:40:43,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:40:43,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:40:43,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:40:43,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:40:43,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:40:43,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:40:43,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:40:43,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:40:43,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:40:43,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:40:43,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:40:43,476 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:40:43,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:40:43,479 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:40:43,481 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:40:43,481 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:40:43,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:40:43,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:40:43,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:40:43,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:40:43,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:40:43,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:40:43,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:40:43,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:40:43,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:40:43,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:40:43,497 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 [2020-10-27 05:40:43,548 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:40:43,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:40:43,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:40:43,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:40:43,552 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:40:43,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:40:43,553 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:40:43,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:40:43,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:40:43,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:40:43,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:40:43,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:40:43,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:40:43,555 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:40:43,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:40:43,556 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:40:43,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:40:43,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:40:43,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:40:43,557 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:40:43,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:40:43,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:40:43,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:40:43,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:40:43,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:40:43,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:40:43,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:40:43,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:40:43,559 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:40:43,559 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:40:43,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:40:43,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:40:43,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:40:43,990 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:40:43,990 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:40:43,991 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 05:40:44,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f4e5a38f/e80e03214119413584fc6bcf34498494/FLAGa37144f24 [2020-10-27 05:40:45,122 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:40:45,122 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 05:40:45,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f4e5a38f/e80e03214119413584fc6bcf34498494/FLAGa37144f24 [2020-10-27 05:40:45,644 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f4e5a38f/e80e03214119413584fc6bcf34498494 [2020-10-27 05:40:45,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:40:45,654 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:40:45,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:40:45,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:40:45,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:40:45,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:40:45" (1/1) ... [2020-10-27 05:40:45,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5141ff55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:45, skipping insertion in model container [2020-10-27 05:40:45,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:40:45" (1/1) ... [2020-10-27 05:40:45,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:40:45,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:40:46,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:40:46,985 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:40:47,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:40:47,508 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:40:47,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:47 WrapperNode [2020-10-27 05:40:47,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:40:47,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:40:47,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:40:47,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:40:47,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:47" (1/1) ... [2020-10-27 05:40:47,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:47" (1/1) ... [2020-10-27 05:40:47,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:47" (1/1) ... [2020-10-27 05:40:47,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:47" (1/1) ... [2020-10-27 05:40:47,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:47" (1/1) ... [2020-10-27 05:40:47,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:47" (1/1) ... [2020-10-27 05:40:47,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:47" (1/1) ... [2020-10-27 05:40:47,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:40:47,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:40:47,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:40:47,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:40:47,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:47" (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 [2020-10-27 05:40:47,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:40:47,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:40:47,904 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:40:47,904 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:40:47,905 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:40:47,905 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:40:47,905 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:40:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:40:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:40:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:40:47,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:40:47,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 05:40:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:40:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:40:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:40:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:40:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:40:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:40:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:40:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:40:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:40:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:40:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:40:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:40:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:40:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:40:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:40:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:40:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:40:51,975 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:40:51,976 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:40:51,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:40:51 BoogieIcfgContainer [2020-10-27 05:40:51,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:40:51,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:40:51,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:40:51,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:40:51,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:40:45" (1/3) ... [2020-10-27 05:40:51,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c16ab86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:40:51, skipping insertion in model container [2020-10-27 05:40:51,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:40:47" (2/3) ... [2020-10-27 05:40:51,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c16ab86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:40:51, skipping insertion in model container [2020-10-27 05:40:51,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:40:51" (3/3) ... [2020-10-27 05:40:51,991 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 05:40:52,004 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:40:52,011 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:40:52,026 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:40:52,062 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:40:52,062 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:40:52,062 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:40:52,062 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:40:52,063 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:40:52,063 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:40:52,063 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:40:52,063 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:40:52,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states. [2020-10-27 05:40:52,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 05:40:52,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:40:52,130 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] [2020-10-27 05:40:52,130 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:40:52,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:40:52,138 INFO L82 PathProgramCache]: Analyzing trace with hash 309893165, now seen corresponding path program 1 times [2020-10-27 05:40:52,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:40:52,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297606519] [2020-10-27 05:40:52,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:40:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:40:52,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:53,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:53,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:53,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:53,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:57,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:40:57,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 05:40:57,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:40:57,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 05:40:57,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:40:57,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:40:57,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:40:57,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 05:40:57,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:41:00,564 WARN L193 SmtUtils]: Spent 2.52 s on a formula simplification that was a NOOP. DAG size: 625 [2020-10-27 05:41:00,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:41:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:41:00,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:41:00,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:41:00,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:41:00,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:41:00,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 05:41:00,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:41:00,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:41:00,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:41:00,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:41:00,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:41:00,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:41:00,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297606519] [2020-10-27 05:41:00,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:41:00,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:41:00,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117536446] [2020-10-27 05:41:00,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:41:00,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:41:00,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:41:00,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:41:00,782 INFO L87 Difference]: Start difference. First operand 1111 states. Second operand 6 states. [2020-10-27 05:41:03,416 WARN L193 SmtUtils]: Spent 2.49 s on a formula simplification that was a NOOP. DAG size: 631 [2020-10-27 05:41:17,253 WARN L193 SmtUtils]: Spent 2.51 s on a formula simplification that was a NOOP. DAG size: 630 [2020-10-27 05:41:18,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:41:18,487 INFO L93 Difference]: Finished difference Result 1618 states and 2934 transitions. [2020-10-27 05:41:18,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:41:18,489 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-27 05:41:18,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:41:18,523 INFO L225 Difference]: With dead ends: 1618 [2020-10-27 05:41:18,523 INFO L226 Difference]: Without dead ends: 1102 [2020-10-27 05:41:18,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:41:18,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2020-10-27 05:41:18,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1096. [2020-10-27 05:41:18,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1096 states. [2020-10-27 05:41:18,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1396 transitions. [2020-10-27 05:41:18,689 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1396 transitions. Word has length 68 [2020-10-27 05:41:18,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:41:18,691 INFO L481 AbstractCegarLoop]: Abstraction has 1096 states and 1396 transitions. [2020-10-27 05:41:18,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:41:18,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1396 transitions. [2020-10-27 05:41:18,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 05:41:18,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:41:18,701 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] [2020-10-27 05:41:18,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:41:18,702 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:41:18,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:41:18,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1787215120, now seen corresponding path program 1 times [2020-10-27 05:41:18,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:41:18,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073537340] [2020-10-27 05:41:18,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:41:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:41:18,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:41:18,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:41:19,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:41:19,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:41:20,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:41:21,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:41:21,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:41:21,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:41:22,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:41:22,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:41:23,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:41:23,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 05:41:23,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:41:23,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 05:41:23,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:41:23,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:41:23,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:41:23,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 05:41:23,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:41:26,613 WARN L193 SmtUtils]: Spent 2.60 s on a formula simplification that was a NOOP. DAG size: 625 [2020-10-27 05:41:26,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:41:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:41:26,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:41:26,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:41:26,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:41:26,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:41:26,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 05:41:26,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:41:26,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:41:26,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:41:26,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:41:26,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:41:26,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:41:26,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073537340] [2020-10-27 05:41:26,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:41:26,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:41:26,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580988337] [2020-10-27 05:41:26,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:41:26,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:41:26,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:41:26,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:41:26,789 INFO L87 Difference]: Start difference. First operand 1096 states and 1396 transitions. Second operand 6 states. [2020-10-27 05:41:29,507 WARN L193 SmtUtils]: Spent 2.60 s on a formula simplification that was a NOOP. DAG size: 631 [2020-10-27 05:41:38,183 WARN L193 SmtUtils]: Spent 2.64 s on a formula simplification that was a NOOP. DAG size: 630 [2020-10-27 05:41:39,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:41:39,368 INFO L93 Difference]: Finished difference Result 1921 states and 2559 transitions. [2020-10-27 05:41:39,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:41:39,369 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-27 05:41:39,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:41:39,381 INFO L225 Difference]: With dead ends: 1921 [2020-10-27 05:41:39,381 INFO L226 Difference]: Without dead ends: 1117 [2020-10-27 05:41:39,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:41:39,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2020-10-27 05:41:39,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1111. [2020-10-27 05:41:39,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1111 states. [2020-10-27 05:41:39,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1492 transitions. [2020-10-27 05:41:39,480 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1492 transitions. Word has length 68 [2020-10-27 05:41:39,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:41:39,480 INFO L481 AbstractCegarLoop]: Abstraction has 1111 states and 1492 transitions. [2020-10-27 05:41:39,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:41:39,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1492 transitions. [2020-10-27 05:41:39,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 05:41:39,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:41:39,484 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] [2020-10-27 05:41:39,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:41:39,485 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:41:39,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:41:39,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1764417937, now seen corresponding path program 1 times [2020-10-27 05:41:39,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:41:39,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639424865] [2020-10-27 05:41:39,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:41:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:41:39,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:41:39,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:41:39,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:41:40,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:41:40,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:41:41,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:41:41,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:41:42,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:41:44,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:41:44,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 05:41:44,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:41:44,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 05:41:44,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:41:44,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 05:41:44,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:41:44,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 05:41:44,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:41:47,492 WARN L193 SmtUtils]: Spent 2.60 s on a formula simplification that was a NOOP. DAG size: 625 [2020-10-27 05:41:47,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:41:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:41:47,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:41:47,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:41:47,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:41:47,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:41:47,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 05:41:47,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:41:47,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:41:47,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:41:47,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:41:47,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:41:47,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:41:47,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639424865] [2020-10-27 05:41:47,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:41:47,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:41:47,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824489338] [2020-10-27 05:41:47,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 05:41:47,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:41:47,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 05:41:47,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:41:47,671 INFO L87 Difference]: Start difference. First operand 1111 states and 1492 transitions. Second operand 9 states. [2020-10-27 05:41:50,427 WARN L193 SmtUtils]: Spent 2.63 s on a formula simplification that was a NOOP. DAG size: 630 [2020-10-27 05:41:59,327 WARN L193 SmtUtils]: Spent 2.63 s on a formula simplification that was a NOOP. DAG size: 634 [2020-10-27 05:42:03,609 WARN L193 SmtUtils]: Spent 2.64 s on a formula simplification that was a NOOP. DAG size: 632 [2020-10-27 05:42:03,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:42:03,823 INFO L93 Difference]: Finished difference Result 3329 states and 4931 transitions. [2020-10-27 05:42:03,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:42:03,824 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-10-27 05:42:03,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:42:03,847 INFO L225 Difference]: With dead ends: 3329 [2020-10-27 05:42:03,848 INFO L226 Difference]: Without dead ends: 2961 [2020-10-27 05:42:03,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-27 05:42:03,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-10-27 05:42:03,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1125. [2020-10-27 05:42:03,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1125 states. [2020-10-27 05:42:03,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1505 transitions. [2020-10-27 05:42:03,966 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1505 transitions. Word has length 69 [2020-10-27 05:42:03,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:42:03,967 INFO L481 AbstractCegarLoop]: Abstraction has 1125 states and 1505 transitions. [2020-10-27 05:42:03,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 05:42:03,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1505 transitions. [2020-10-27 05:42:03,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 05:42:03,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:42:03,970 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] [2020-10-27 05:42:03,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:42:03,971 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:42:03,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:42:03,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1190407834, now seen corresponding path program 1 times [2020-10-27 05:42:03,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:42:03,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471374476] [2020-10-27 05:42:03,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:42:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:42:04,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:04,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:04,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:04,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:05,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:05,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:06,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:09,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:42:09,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 05:42:09,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:42:09,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 05:42:09,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:42:09,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:42:09,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:42:09,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 05:42:09,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:42:11,883 WARN L193 SmtUtils]: Spent 2.53 s on a formula simplification that was a NOOP. DAG size: 625 [2020-10-27 05:42:11,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:42:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:42:11,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:11,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:42:11,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:42:11,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:42:11,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 05:42:11,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:42:11,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:42:11,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:42:11,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:42:11,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:42:12,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:42:12,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471374476] [2020-10-27 05:42:12,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:42:12,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:42:12,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284773872] [2020-10-27 05:42:12,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:42:12,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:42:12,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:42:12,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:42:12,055 INFO L87 Difference]: Start difference. First operand 1125 states and 1505 transitions. Second operand 8 states. [2020-10-27 05:42:14,888 WARN L193 SmtUtils]: Spent 2.67 s on a formula simplification that was a NOOP. DAG size: 632 [2020-10-27 05:42:23,057 WARN L193 SmtUtils]: Spent 2.61 s on a formula simplification that was a NOOP. DAG size: 636 [2020-10-27 05:42:26,993 WARN L193 SmtUtils]: Spent 2.59 s on a formula simplification that was a NOOP. DAG size: 634 [2020-10-27 05:42:27,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:42:27,252 INFO L93 Difference]: Finished difference Result 3093 states and 4516 transitions. [2020-10-27 05:42:27,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:42:27,252 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-10-27 05:42:27,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:42:27,268 INFO L225 Difference]: With dead ends: 3093 [2020-10-27 05:42:27,268 INFO L226 Difference]: Without dead ends: 2689 [2020-10-27 05:42:27,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-27 05:42:27,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2020-10-27 05:42:27,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 1156. [2020-10-27 05:42:27,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1156 states. [2020-10-27 05:42:27,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1543 transitions. [2020-10-27 05:42:27,371 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1543 transitions. Word has length 69 [2020-10-27 05:42:27,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:42:27,372 INFO L481 AbstractCegarLoop]: Abstraction has 1156 states and 1543 transitions. [2020-10-27 05:42:27,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:42:27,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1543 transitions. [2020-10-27 05:42:27,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 05:42:27,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:42:27,375 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] [2020-10-27 05:42:27,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:42:27,376 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:42:27,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:42:27,376 INFO L82 PathProgramCache]: Analyzing trace with hash 167415563, now seen corresponding path program 1 times [2020-10-27 05:42:27,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:42:27,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025081533] [2020-10-27 05:42:27,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:42:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:42:27,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:27,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:27,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:27,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:28,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:28,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:28,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:30,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:30,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:30,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:32,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:42:32,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 05:42:32,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:42:32,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-27 05:42:32,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:42:32,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 05:42:32,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:42:32,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 05:42:32,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:42:35,233 WARN L193 SmtUtils]: Spent 2.51 s on a formula simplification that was a NOOP. DAG size: 625 [2020-10-27 05:42:35,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:42:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:42:35,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:35,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:42:35,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:42:35,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:42:35,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 05:42:35,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:42:35,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:42:35,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:42:35,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:42:35,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:42:35,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:42:35,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025081533] [2020-10-27 05:42:35,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:42:35,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:42:35,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500334288] [2020-10-27 05:42:35,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 05:42:35,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:42:35,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 05:42:35,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:42:35,365 INFO L87 Difference]: Start difference. First operand 1156 states and 1543 transitions. Second operand 9 states. [2020-10-27 05:42:38,032 WARN L193 SmtUtils]: Spent 2.55 s on a formula simplification that was a NOOP. DAG size: 630 [2020-10-27 05:42:46,089 WARN L193 SmtUtils]: Spent 2.61 s on a formula simplification that was a NOOP. DAG size: 634 [2020-10-27 05:42:50,862 WARN L193 SmtUtils]: Spent 2.61 s on a formula simplification that was a NOOP. DAG size: 632 [2020-10-27 05:42:51,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:42:51,148 INFO L93 Difference]: Finished difference Result 3325 states and 4840 transitions. [2020-10-27 05:42:51,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:42:51,148 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-10-27 05:42:51,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:42:51,164 INFO L225 Difference]: With dead ends: 3325 [2020-10-27 05:42:51,164 INFO L226 Difference]: Without dead ends: 2968 [2020-10-27 05:42:51,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-27 05:42:51,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-10-27 05:42:51,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1161. [2020-10-27 05:42:51,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1161 states. [2020-10-27 05:42:51,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 1551 transitions. [2020-10-27 05:42:51,270 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 1551 transitions. Word has length 69 [2020-10-27 05:42:51,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:42:51,271 INFO L481 AbstractCegarLoop]: Abstraction has 1161 states and 1551 transitions. [2020-10-27 05:42:51,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 05:42:51,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 1551 transitions. [2020-10-27 05:42:51,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 05:42:51,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:42:51,274 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] [2020-10-27 05:42:51,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:42:51,274 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:42:51,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:42:51,275 INFO L82 PathProgramCache]: Analyzing trace with hash -410159668, now seen corresponding path program 1 times [2020-10-27 05:42:51,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:42:51,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409350] [2020-10-27 05:42:51,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:42:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:42:51,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:51,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:51,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:51,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:52,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:52,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:55,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:55,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:56,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:42:56,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 05:42:56,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:42:56,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 05:42:56,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:42:56,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:42:56,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:42:56,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 05:42:56,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:42:59,082 WARN L193 SmtUtils]: Spent 2.51 s on a formula simplification that was a NOOP. DAG size: 625 [2020-10-27 05:42:59,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:42:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:42:59,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:42:59,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:42:59,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:42:59,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:42:59,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 05:42:59,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:42:59,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:42:59,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:42:59,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:42:59,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:42:59,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:42:59,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409350] [2020-10-27 05:42:59,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:42:59,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:42:59,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233162527] [2020-10-27 05:42:59,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:42:59,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:42:59,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:42:59,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:42:59,230 INFO L87 Difference]: Start difference. First operand 1161 states and 1551 transitions. Second operand 8 states. [2020-10-27 05:43:01,932 WARN L193 SmtUtils]: Spent 2.59 s on a formula simplification that was a NOOP. DAG size: 632 [2020-10-27 05:43:09,957 WARN L193 SmtUtils]: Spent 2.62 s on a formula simplification that was a NOOP. DAG size: 636 [2020-10-27 05:43:14,526 WARN L193 SmtUtils]: Spent 2.62 s on a formula simplification that was a NOOP. DAG size: 634 [2020-10-27 05:43:14,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:43:14,822 INFO L93 Difference]: Finished difference Result 2861 states and 4104 transitions. [2020-10-27 05:43:14,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:43:14,822 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-10-27 05:43:14,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:43:14,833 INFO L225 Difference]: With dead ends: 2861 [2020-10-27 05:43:14,834 INFO L226 Difference]: Without dead ends: 2509 [2020-10-27 05:43:14,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-27 05:43:14,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2509 states. [2020-10-27 05:43:14,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2509 to 1220. [2020-10-27 05:43:14,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1220 states. [2020-10-27 05:43:14,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1633 transitions. [2020-10-27 05:43:14,941 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1633 transitions. Word has length 69 [2020-10-27 05:43:14,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:43:14,941 INFO L481 AbstractCegarLoop]: Abstraction has 1220 states and 1633 transitions. [2020-10-27 05:43:14,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:43:14,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1633 transitions. [2020-10-27 05:43:14,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 05:43:14,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:43:14,944 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] [2020-10-27 05:43:14,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:43:14,945 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:43:14,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:43:14,945 INFO L82 PathProgramCache]: Analyzing trace with hash -583550085, now seen corresponding path program 1 times [2020-10-27 05:43:14,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:43:14,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937222915] [2020-10-27 05:43:14,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:43:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:43:15,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:15,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:15,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:15,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:15,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:16,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:16,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:16,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:17,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:20,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:43:20,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 05:43:20,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:43:20,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 05:43:20,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:43:20,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:43:20,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:43:20,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 05:43:20,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:43:22,776 WARN L193 SmtUtils]: Spent 2.55 s on a formula simplification that was a NOOP. DAG size: 625 [2020-10-27 05:43:22,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:43:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:43:22,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:22,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:43:22,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:43:22,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:43:22,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 05:43:22,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:43:22,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:43:22,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:43:22,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:43:22,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:43:22,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:43:22,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937222915] [2020-10-27 05:43:22,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:43:22,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:43:22,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037125137] [2020-10-27 05:43:22,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:43:22,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:43:22,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:43:22,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:43:22,902 INFO L87 Difference]: Start difference. First operand 1220 states and 1633 transitions. Second operand 8 states. [2020-10-27 05:43:25,601 WARN L193 SmtUtils]: Spent 2.60 s on a formula simplification that was a NOOP. DAG size: 630 [2020-10-27 05:43:33,954 WARN L193 SmtUtils]: Spent 2.59 s on a formula simplification that was a NOOP. DAG size: 634 [2020-10-27 05:43:38,529 WARN L193 SmtUtils]: Spent 2.60 s on a formula simplification that was a NOOP. DAG size: 632 [2020-10-27 05:43:38,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:43:38,849 INFO L93 Difference]: Finished difference Result 3195 states and 4570 transitions. [2020-10-27 05:43:38,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:43:38,849 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-10-27 05:43:38,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:43:38,862 INFO L225 Difference]: With dead ends: 3195 [2020-10-27 05:43:38,862 INFO L226 Difference]: Without dead ends: 2782 [2020-10-27 05:43:38,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-27 05:43:38,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2020-10-27 05:43:38,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 1254. [2020-10-27 05:43:38,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1254 states. [2020-10-27 05:43:38,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1681 transitions. [2020-10-27 05:43:38,981 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1681 transitions. Word has length 69 [2020-10-27 05:43:38,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:43:38,982 INFO L481 AbstractCegarLoop]: Abstraction has 1254 states and 1681 transitions. [2020-10-27 05:43:38,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:43:38,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1681 transitions. [2020-10-27 05:43:38,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 05:43:38,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:43:38,985 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] [2020-10-27 05:43:38,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:43:38,985 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:43:38,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:43:38,986 INFO L82 PathProgramCache]: Analyzing trace with hash -2038425796, now seen corresponding path program 1 times [2020-10-27 05:43:38,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:43:38,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281149173] [2020-10-27 05:43:38,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:43:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:43:39,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:39,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:39,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:39,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:39,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:44,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:43:44,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 05:43:44,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:43:44,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 05:43:44,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:43:44,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:43:44,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:43:44,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 05:43:44,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:43:46,708 WARN L193 SmtUtils]: Spent 2.55 s on a formula simplification that was a NOOP. DAG size: 625 [2020-10-27 05:43:46,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:43:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:43:46,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:46,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:43:46,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:43:46,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:43:46,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 05:43:46,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:43:46,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:43:46,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:43:46,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:43:46,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:43:46,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:43:46,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281149173] [2020-10-27 05:43:46,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:43:46,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:43:46,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563046505] [2020-10-27 05:43:46,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:43:46,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:43:46,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:43:46,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:43:46,804 INFO L87 Difference]: Start difference. First operand 1254 states and 1681 transitions. Second operand 6 states. [2020-10-27 05:43:49,533 WARN L193 SmtUtils]: Spent 2.61 s on a formula simplification that was a NOOP. DAG size: 631 [2020-10-27 05:43:56,183 WARN L193 SmtUtils]: Spent 2.59 s on a formula simplification that was a NOOP. DAG size: 630 [2020-10-27 05:43:57,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:43:57,078 INFO L93 Difference]: Finished difference Result 2485 states and 3426 transitions. [2020-10-27 05:43:57,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:43:57,078 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-27 05:43:57,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:43:57,089 INFO L225 Difference]: With dead ends: 2485 [2020-10-27 05:43:57,089 INFO L226 Difference]: Without dead ends: 1568 [2020-10-27 05:43:57,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:43:57,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-27 05:43:57,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1562. [2020-10-27 05:43:57,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1562 states. [2020-10-27 05:43:57,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 2175 transitions. [2020-10-27 05:43:57,255 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 2175 transitions. Word has length 70 [2020-10-27 05:43:57,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:43:57,256 INFO L481 AbstractCegarLoop]: Abstraction has 1562 states and 2175 transitions. [2020-10-27 05:43:57,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:43:57,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 2175 transitions. [2020-10-27 05:43:57,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 05:43:57,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:43:57,259 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] [2020-10-27 05:43:57,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:43:57,259 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:43:57,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:43:57,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1568994895, now seen corresponding path program 1 times [2020-10-27 05:43:57,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:43:57,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692037349] [2020-10-27 05:43:57,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:43:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:43:57,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:57,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:57,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:57,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:59,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:02,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:44:02,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 05:44:02,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:44:02,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 05:44:02,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:44:02,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:44:02,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:44:02,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 05:44:02,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:44:05,265 WARN L193 SmtUtils]: Spent 2.66 s on a formula simplification that was a NOOP. DAG size: 625 [2020-10-27 05:44:05,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:44:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:44:05,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:05,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:44:05,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:44:05,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:44:05,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 05:44:05,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:44:05,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:44:05,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:44:05,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:44:05,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:44:05,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:44:05,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692037349] [2020-10-27 05:44:05,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:44:05,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:44:05,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115199756] [2020-10-27 05:44:05,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:44:05,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:44:05,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:44:05,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:44:05,364 INFO L87 Difference]: Start difference. First operand 1562 states and 2175 transitions. Second operand 8 states. [2020-10-27 05:44:08,068 WARN L193 SmtUtils]: Spent 2.57 s on a formula simplification that was a NOOP. DAG size: 632 [2020-10-27 05:44:15,075 WARN L193 SmtUtils]: Spent 2.61 s on a formula simplification that was a NOOP. DAG size: 636 [2020-10-27 05:44:19,155 WARN L193 SmtUtils]: Spent 2.63 s on a formula simplification that was a NOOP. DAG size: 634 [2020-10-27 05:44:19,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:44:19,485 INFO L93 Difference]: Finished difference Result 4755 states and 6880 transitions. [2020-10-27 05:44:19,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:44:19,485 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2020-10-27 05:44:19,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:44:19,497 INFO L225 Difference]: With dead ends: 4755 [2020-10-27 05:44:19,497 INFO L226 Difference]: Without dead ends: 3587 [2020-10-27 05:44:19,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-27 05:44:19,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3587 states. [2020-10-27 05:44:19,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3587 to 1570. [2020-10-27 05:44:19,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-10-27 05:44:19,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 2167 transitions. [2020-10-27 05:44:19,697 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 2167 transitions. Word has length 71 [2020-10-27 05:44:19,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:44:19,697 INFO L481 AbstractCegarLoop]: Abstraction has 1570 states and 2167 transitions. [2020-10-27 05:44:19,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:44:19,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 2167 transitions. [2020-10-27 05:44:19,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 05:44:19,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:44:19,700 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] [2020-10-27 05:44:19,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:44:19,701 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:44:19,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:44:19,701 INFO L82 PathProgramCache]: Analyzing trace with hash 786617291, now seen corresponding path program 1 times [2020-10-27 05:44:19,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:44:19,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673173152] [2020-10-27 05:44:19,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:44:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:44:19,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:19,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:19,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:20,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:23,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:24,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:44:24,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 05:44:24,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:44:24,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 05:44:24,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:44:24,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:44:24,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:44:24,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 05:44:24,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0