/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=BIGGEST --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 -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:05:03,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:05:03,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:05:03,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:05:03,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:05:03,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:05:03,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:05:03,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:05:03,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:05:03,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:05:03,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:05:03,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:05:03,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:05:03,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:05:03,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:05:03,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:05:03,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:05:03,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:05:03,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:05:03,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:05:03,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:05:03,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:05:03,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:05:03,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:05:03,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:05:03,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:05:03,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:05:03,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:05:03,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:05:03,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:05:03,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:05:03,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:05:03,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:05:03,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:05:03,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:05:03,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:05:03,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:05:03,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:05:03,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:05:03,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:05:03,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:05:03,600 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 [2020-10-12 20:05:03,623 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:05:03,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:05:03,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:05:03,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:05:03,625 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:05:03,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:05:03,625 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:05:03,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:05:03,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:05:03,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:05:03,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:05:03,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:05:03,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:05:03,627 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:05:03,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:05:03,627 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:05:03,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:05:03,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:05:03,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:05:03,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:05:03,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:05:03,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:05:03,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:05:03,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:05:03,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:05:03,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:05:03,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:05:03,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:05:03,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:05:03,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:05:03,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:05:03,975 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:05:03,978 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:05:03,980 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:05:03,980 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:05:03,981 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-12 20:05:04,042 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a2cb734f/a4f5c3eb327442b39b267eac4652d22c/FLAG4be893fd6 [2020-10-12 20:05:04,586 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:05:04,587 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-12 20:05:04,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a2cb734f/a4f5c3eb327442b39b267eac4652d22c/FLAG4be893fd6 [2020-10-12 20:05:04,932 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a2cb734f/a4f5c3eb327442b39b267eac4652d22c [2020-10-12 20:05:04,942 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:05:04,944 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:05:04,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:05:04,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:05:04,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:05:04,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:05:04" (1/1) ... [2020-10-12 20:05:04,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f98ced9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:05:04, skipping insertion in model container [2020-10-12 20:05:04,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:05:04" (1/1) ... [2020-10-12 20:05:04,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:05:05,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:05:05,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:05:05,625 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:05:05,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:05:05,780 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:05:05,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:05:05 WrapperNode [2020-10-12 20:05:05,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:05:05,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:05:05,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:05:05,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:05:05,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:05:05" (1/1) ... [2020-10-12 20:05:05,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:05:05" (1/1) ... [2020-10-12 20:05:05,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:05:05" (1/1) ... [2020-10-12 20:05:05,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:05:05" (1/1) ... [2020-10-12 20:05:05,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:05:05" (1/1) ... [2020-10-12 20:05:05,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:05:05" (1/1) ... [2020-10-12 20:05:05,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:05:05" (1/1) ... [2020-10-12 20:05:05,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:05:05,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:05:05,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:05:05,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:05:05,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:05:05" (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 [2020-10-12 20:05:05,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:05:05,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:05:05,928 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:05:05,929 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:05:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:05:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:05:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:05:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:05:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:05:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:05:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:05:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:05:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:05:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:05:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:05:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:05:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 20:05:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:05:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:05:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:05:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:05:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:05:06,925 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:05:06,926 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:05:06,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:05:06 BoogieIcfgContainer [2020-10-12 20:05:06,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:05:06,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:05:06,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:05:06,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:05:06,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:05:04" (1/3) ... [2020-10-12 20:05:06,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c92986e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:05:06, skipping insertion in model container [2020-10-12 20:05:06,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:05:05" (2/3) ... [2020-10-12 20:05:06,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c92986e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:05:06, skipping insertion in model container [2020-10-12 20:05:06,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:05:06" (3/3) ... [2020-10-12 20:05:06,940 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-12 20:05:06,950 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:05:06,958 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:05:06,972 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:05:06,998 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:05:06,999 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:05:06,999 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:05:06,999 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:05:06,999 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:05:07,000 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:05:07,000 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:05:07,000 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:05:07,022 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states. [2020-10-12 20:05:07,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-12 20:05:07,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:05:07,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:05:07,035 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:05:07,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:05:07,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1363226384, now seen corresponding path program 1 times [2020-10-12 20:05:07,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:05:07,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100079375] [2020-10-12 20:05:07,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:05:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:07,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:08,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:08,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:10,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:10,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 20:05:10,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:05:10,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2880 [2020-10-12 20:05:10,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:10,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:05:10,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 20:05:10,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 20:05:10,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:05:10,715 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:05:10,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:05:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:10,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:10,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:10,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:05:10,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:05:10,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 20:05:10,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:10,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:05:10,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:05:10,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:05:10,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:05:10,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:05:10,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100079375] [2020-10-12 20:05:10,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:05:10,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:05:10,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23533406] [2020-10-12 20:05:10,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:05:10,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:05:10,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:05:10,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:05:10,849 INFO L87 Difference]: Start difference. First operand 221 states. Second operand 8 states. [2020-10-12 20:05:13,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:05:13,507 INFO L93 Difference]: Finished difference Result 858 states and 1407 transitions. [2020-10-12 20:05:13,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:05:13,509 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 85 [2020-10-12 20:05:13,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:05:13,537 INFO L225 Difference]: With dead ends: 858 [2020-10-12 20:05:13,538 INFO L226 Difference]: Without dead ends: 698 [2020-10-12 20:05:13,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:05:13,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-12 20:05:13,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 690. [2020-10-12 20:05:13,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-12 20:05:13,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1042 transitions. [2020-10-12 20:05:13,679 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1042 transitions. Word has length 85 [2020-10-12 20:05:13,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:05:13,680 INFO L479 AbstractCegarLoop]: Abstraction has 690 states and 1042 transitions. [2020-10-12 20:05:13,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:05:13,680 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1042 transitions. [2020-10-12 20:05:13,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 20:05:13,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:05:13,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:05:13,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:05:13,687 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:05:13,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:05:13,688 INFO L82 PathProgramCache]: Analyzing trace with hash 871864466, now seen corresponding path program 1 times [2020-10-12 20:05:13,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:05:13,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605678320] [2020-10-12 20:05:13,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:05:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:13,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:13,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:14,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:15,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:15,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 20:05:15,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:05:15,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1414 [2020-10-12 20:05:15,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:15,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:05:15,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:05:15,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 20:05:15,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:05:15,427 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:05:15,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:05:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:15,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:15,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:15,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:05:15,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:05:15,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:05:15,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:15,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:05:15,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:05:15,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:05:15,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-12 20:05:15,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:05:15,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605678320] [2020-10-12 20:05:15,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:05:15,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:05:15,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424600261] [2020-10-12 20:05:15,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:05:15,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:05:15,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:05:15,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:05:15,488 INFO L87 Difference]: Start difference. First operand 690 states and 1042 transitions. Second operand 8 states. [2020-10-12 20:05:15,761 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 20:05:16,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:05:16,882 INFO L93 Difference]: Finished difference Result 2512 states and 3930 transitions. [2020-10-12 20:05:16,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:05:16,883 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 86 [2020-10-12 20:05:16,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:05:16,901 INFO L225 Difference]: With dead ends: 2512 [2020-10-12 20:05:16,901 INFO L226 Difference]: Without dead ends: 2110 [2020-10-12 20:05:16,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:05:16,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2020-10-12 20:05:17,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 1173. [2020-10-12 20:05:17,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1173 states. [2020-10-12 20:05:17,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1801 transitions. [2020-10-12 20:05:17,037 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1801 transitions. Word has length 86 [2020-10-12 20:05:17,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:05:17,040 INFO L479 AbstractCegarLoop]: Abstraction has 1173 states and 1801 transitions. [2020-10-12 20:05:17,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:05:17,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1801 transitions. [2020-10-12 20:05:17,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 20:05:17,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:05:17,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:05:17,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:05:17,050 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:05:17,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:05:17,050 INFO L82 PathProgramCache]: Analyzing trace with hash 980876168, now seen corresponding path program 1 times [2020-10-12 20:05:17,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:05:17,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047528124] [2020-10-12 20:05:17,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:05:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:17,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:17,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:17,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:17,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 20:05:17,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:05:17,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 628 [2020-10-12 20:05:17,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:17,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:05:17,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:05:17,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 20:05:17,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:05:17,951 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:05:17,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:05:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:17,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:17,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:17,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:05:17,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:05:17,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 20:05:17,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:17,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:05:17,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:05:17,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:05:17,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:05:18,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:05:18,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047528124] [2020-10-12 20:05:18,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:05:18,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:05:18,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339684534] [2020-10-12 20:05:18,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:05:18,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:05:18,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:05:18,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:05:18,030 INFO L87 Difference]: Start difference. First operand 1173 states and 1801 transitions. Second operand 6 states. [2020-10-12 20:05:18,274 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-12 20:05:19,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:05:19,443 INFO L93 Difference]: Finished difference Result 3212 states and 4985 transitions. [2020-10-12 20:05:19,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:05:19,444 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-12 20:05:19,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:05:19,457 INFO L225 Difference]: With dead ends: 3212 [2020-10-12 20:05:19,458 INFO L226 Difference]: Without dead ends: 2086 [2020-10-12 20:05:19,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:05:19,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2020-10-12 20:05:19,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 2084. [2020-10-12 20:05:19,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2084 states. [2020-10-12 20:05:19,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 3214 transitions. [2020-10-12 20:05:19,616 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 3214 transitions. Word has length 87 [2020-10-12 20:05:19,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:05:19,618 INFO L479 AbstractCegarLoop]: Abstraction has 2084 states and 3214 transitions. [2020-10-12 20:05:19,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:05:19,619 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 3214 transitions. [2020-10-12 20:05:19,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 20:05:19,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:05:19,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:05:19,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:05:19,623 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:05:19,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:05:19,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1979208261, now seen corresponding path program 1 times [2020-10-12 20:05:19,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:05:19,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276156461] [2020-10-12 20:05:19,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:05:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:19,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:19,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:20,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:20,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 20:05:20,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:05:20,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 573 [2020-10-12 20:05:20,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:20,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:05:20,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:05:20,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 20:05:20,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-12 20:05:20,441 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:05:20,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:05:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:20,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:20,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:20,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:05:20,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:05:20,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-12 20:05:20,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:20,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:05:20,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:05:20,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:05:20,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 20:05:20,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:05:20,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276156461] [2020-10-12 20:05:20,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:05:20,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:05:20,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059850306] [2020-10-12 20:05:20,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:05:20,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:05:20,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:05:20,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:05:20,577 INFO L87 Difference]: Start difference. First operand 2084 states and 3214 transitions. Second operand 6 states. [2020-10-12 20:05:20,770 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 20:05:22,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:05:22,250 INFO L93 Difference]: Finished difference Result 5651 states and 8774 transitions. [2020-10-12 20:05:22,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:05:22,251 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-12 20:05:22,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:05:22,271 INFO L225 Difference]: With dead ends: 5651 [2020-10-12 20:05:22,271 INFO L226 Difference]: Without dead ends: 3683 [2020-10-12 20:05:22,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:05:22,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3683 states. [2020-10-12 20:05:22,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3683 to 3681. [2020-10-12 20:05:22,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3681 states. [2020-10-12 20:05:22,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 5678 transitions. [2020-10-12 20:05:22,614 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 5678 transitions. Word has length 87 [2020-10-12 20:05:22,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:05:22,615 INFO L479 AbstractCegarLoop]: Abstraction has 3681 states and 5678 transitions. [2020-10-12 20:05:22,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:05:22,615 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 5678 transitions. [2020-10-12 20:05:22,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 20:05:22,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:05:22,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:05:22,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:05:22,620 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:05:22,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:05:22,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1151800372, now seen corresponding path program 1 times [2020-10-12 20:05:22,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:05:22,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979537565] [2020-10-12 20:05:22,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:05:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:22,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:22,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:23,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:23,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 20:05:23,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:05:23,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 584 [2020-10-12 20:05:23,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:23,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:05:23,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:05:23,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 20:05:23,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:05:23,506 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:05:23,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:05:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:23,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:23,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:23,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:05:23,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:05:23,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 20:05:23,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:23,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:05:23,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:05:23,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:05:23,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:05:23,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:05:23,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979537565] [2020-10-12 20:05:23,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:05:23,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:05:23,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778928870] [2020-10-12 20:05:23,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:05:23,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:05:23,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:05:23,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:05:23,581 INFO L87 Difference]: Start difference. First operand 3681 states and 5678 transitions. Second operand 6 states. [2020-10-12 20:05:23,847 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-12 20:05:25,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:05:25,325 INFO L93 Difference]: Finished difference Result 10338 states and 16019 transitions. [2020-10-12 20:05:25,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:05:25,325 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-12 20:05:25,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:05:25,364 INFO L225 Difference]: With dead ends: 10338 [2020-10-12 20:05:25,365 INFO L226 Difference]: Without dead ends: 6807 [2020-10-12 20:05:25,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:05:25,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6807 states. [2020-10-12 20:05:25,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6807 to 6805. [2020-10-12 20:05:25,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6805 states. [2020-10-12 20:05:25,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6805 states to 6805 states and 10485 transitions. [2020-10-12 20:05:25,878 INFO L78 Accepts]: Start accepts. Automaton has 6805 states and 10485 transitions. Word has length 87 [2020-10-12 20:05:25,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:05:25,880 INFO L479 AbstractCegarLoop]: Abstraction has 6805 states and 10485 transitions. [2020-10-12 20:05:25,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:05:25,880 INFO L276 IsEmpty]: Start isEmpty. Operand 6805 states and 10485 transitions. [2020-10-12 20:05:25,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 20:05:25,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:05:25,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:05:25,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:05:25,885 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:05:25,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:05:25,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1015276630, now seen corresponding path program 1 times [2020-10-12 20:05:25,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:05:25,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520108607] [2020-10-12 20:05:25,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:05:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:25,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:26,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:26,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:26,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 20:05:26,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:05:26,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 718 [2020-10-12 20:05:26,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:26,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:05:26,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:05:26,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 20:05:26,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 20:05:26,827 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:05:26,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:05:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:26,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:26,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:26,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:05:26,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:05:26,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 20:05:26,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:05:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:05:26,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:05:26,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 20:05:26,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:05:26,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520108607] [2020-10-12 20:05:26,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:05:26,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:05:26,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479576350] [2020-10-12 20:05:26,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:05:26,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:05:26,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:05:26,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:05:26,879 INFO L87 Difference]: Start difference. First operand 6805 states and 10485 transitions. Second operand 6 states. [2020-10-12 20:05:27,095 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-12 20:05:28,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:05:28,834 INFO L93 Difference]: Finished difference Result 19828 states and 30566 transitions. [2020-10-12 20:05:28,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:05:28,834 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-12 20:05:28,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:05:28,909 INFO L225 Difference]: With dead ends: 19828 [2020-10-12 20:05:28,909 INFO L226 Difference]: Without dead ends: 13109 [2020-10-12 20:05:28,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:05:28,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13109 states. [2020-10-12 20:05:29,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13109 to 13107. [2020-10-12 20:05:29,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13107 states. [2020-10-12 20:05:29,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13107 states to 13107 states and 20069 transitions. [2020-10-12 20:05:29,790 INFO L78 Accepts]: Start accepts. Automaton has 13107 states and 20069 transitions. Word has length 87 [2020-10-12 20:05:29,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:05:29,791 INFO L479 AbstractCegarLoop]: Abstraction has 13107 states and 20069 transitions. [2020-10-12 20:05:29,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:05:29,791 INFO L276 IsEmpty]: Start isEmpty. Operand 13107 states and 20069 transitions. [2020-10-12 20:05:29,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 20:05:29,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:05:29,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:05:29,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:05:29,797 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:05:29,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:05:29,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1484158361, now seen corresponding path program 1 times [2020-10-12 20:05:29,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:05:29,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720827683] [2020-10-12 20:05:29,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:05:29,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:29,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:29,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:30,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:30,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 20:05:30,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:05:30,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 464 [2020-10-12 20:05:30,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:30,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:05:30,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:05:30,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 20:05:30,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:05:30,495 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:05:30,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:05:30,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:30,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:30,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:30,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:05:30,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:05:30,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 20:05:30,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:30,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:05:30,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:05:30,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:05:30,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:05:30,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:05:30,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720827683] [2020-10-12 20:05:30,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:05:30,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:05:30,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841429526] [2020-10-12 20:05:30,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:05:30,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:05:30,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:05:30,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:05:30,579 INFO L87 Difference]: Start difference. First operand 13107 states and 20069 transitions. Second operand 6 states. [2020-10-12 20:05:30,877 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 20:05:33,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:05:33,437 INFO L93 Difference]: Finished difference Result 38868 states and 59594 transitions. [2020-10-12 20:05:33,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:05:33,441 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-12 20:05:33,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:05:33,505 INFO L225 Difference]: With dead ends: 38868 [2020-10-12 20:05:33,505 INFO L226 Difference]: Without dead ends: 25824 [2020-10-12 20:05:33,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:05:33,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25824 states. [2020-10-12 20:05:35,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25824 to 25822. [2020-10-12 20:05:35,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25822 states. [2020-10-12 20:05:35,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25822 states to 25822 states and 39337 transitions. [2020-10-12 20:05:35,459 INFO L78 Accepts]: Start accepts. Automaton has 25822 states and 39337 transitions. Word has length 87 [2020-10-12 20:05:35,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:05:35,460 INFO L479 AbstractCegarLoop]: Abstraction has 25822 states and 39337 transitions. [2020-10-12 20:05:35,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:05:35,460 INFO L276 IsEmpty]: Start isEmpty. Operand 25822 states and 39337 transitions. [2020-10-12 20:05:35,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 20:05:35,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:05:35,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:05:35,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:05:35,474 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:05:35,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:05:35,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1644278059, now seen corresponding path program 1 times [2020-10-12 20:05:35,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:05:35,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851381691] [2020-10-12 20:05:35,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:05:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:35,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:35,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:35,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:37,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:37,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 20:05:37,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:05:37,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2201 [2020-10-12 20:05:37,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:37,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:05:37,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:05:37,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 20:05:37,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:05:38,068 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:05:38,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:05:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:38,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:38,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:38,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:05:38,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:05:38,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 20:05:38,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:38,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:05:38,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:05:38,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:05:38,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:05:38,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:05:38,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851381691] [2020-10-12 20:05:38,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:05:38,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:05:38,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115036320] [2020-10-12 20:05:38,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:05:38,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:05:38,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:05:38,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:05:38,133 INFO L87 Difference]: Start difference. First operand 25822 states and 39337 transitions. Second operand 11 states. [2020-10-12 20:05:38,375 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-12 20:05:45,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:05:45,876 INFO L93 Difference]: Finished difference Result 121345 states and 184060 transitions. [2020-10-12 20:05:45,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 20:05:45,876 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2020-10-12 20:05:45,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:05:46,108 INFO L225 Difference]: With dead ends: 121345 [2020-10-12 20:05:46,108 INFO L226 Difference]: Without dead ends: 96116 [2020-10-12 20:05:46,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=218, Invalid=652, Unknown=0, NotChecked=0, Total=870 [2020-10-12 20:05:46,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96116 states. [2020-10-12 20:05:50,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96116 to 25904. [2020-10-12 20:05:50,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25904 states. [2020-10-12 20:05:50,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25904 states to 25904 states and 39426 transitions. [2020-10-12 20:05:50,146 INFO L78 Accepts]: Start accepts. Automaton has 25904 states and 39426 transitions. Word has length 88 [2020-10-12 20:05:50,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:05:50,147 INFO L479 AbstractCegarLoop]: Abstraction has 25904 states and 39426 transitions. [2020-10-12 20:05:50,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:05:50,147 INFO L276 IsEmpty]: Start isEmpty. Operand 25904 states and 39426 transitions. [2020-10-12 20:05:50,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 20:05:50,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:05:50,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:05:50,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:05:50,156 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:05:50,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:05:50,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1439514037, now seen corresponding path program 1 times [2020-10-12 20:05:50,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:05:50,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269215854] [2020-10-12 20:05:50,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:05:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:50,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:50,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:50,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:51,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:51,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 20:05:51,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:05:51,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1516 [2020-10-12 20:05:51,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:51,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:05:51,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:05:51,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 20:05:51,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:05:52,103 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:05:52,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:05:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:52,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:52,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:52,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:05:52,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:05:52,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 20:05:52,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:52,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:05:52,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:05:52,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:05:52,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:05:52,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:05:52,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269215854] [2020-10-12 20:05:52,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:05:52,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:05:52,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656974228] [2020-10-12 20:05:52,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:05:52,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:05:52,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:05:52,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:05:52,168 INFO L87 Difference]: Start difference. First operand 25904 states and 39426 transitions. Second operand 11 states. [2020-10-12 20:05:52,394 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-12 20:06:10,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:06:10,075 INFO L93 Difference]: Finished difference Result 191983 states and 289870 transitions. [2020-10-12 20:06:10,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-12 20:06:10,075 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2020-10-12 20:06:10,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:06:10,416 INFO L225 Difference]: With dead ends: 191983 [2020-10-12 20:06:10,416 INFO L226 Difference]: Without dead ends: 183581 [2020-10-12 20:06:10,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=409, Invalid=1483, Unknown=0, NotChecked=0, Total=1892 [2020-10-12 20:06:10,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183581 states. [2020-10-12 20:06:13,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183581 to 26335. [2020-10-12 20:06:13,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26335 states. [2020-10-12 20:06:13,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26335 states to 26335 states and 40056 transitions. [2020-10-12 20:06:13,449 INFO L78 Accepts]: Start accepts. Automaton has 26335 states and 40056 transitions. Word has length 88 [2020-10-12 20:06:13,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:06:13,449 INFO L479 AbstractCegarLoop]: Abstraction has 26335 states and 40056 transitions. [2020-10-12 20:06:13,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:06:13,449 INFO L276 IsEmpty]: Start isEmpty. Operand 26335 states and 40056 transitions. [2020-10-12 20:06:13,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 20:06:13,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:06:13,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:06:13,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:06:13,459 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:06:13,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:06:13,459 INFO L82 PathProgramCache]: Analyzing trace with hash 154668373, now seen corresponding path program 1 times [2020-10-12 20:06:13,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:06:13,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009973853] [2020-10-12 20:06:13,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:06:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:13,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:13,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:13,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:15,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:15,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 20:06:15,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:06:15,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2199 [2020-10-12 20:06:15,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:15,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:06:15,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:06:15,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 20:06:15,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:16,049 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:06:16,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:06:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:16,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:16,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:16,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:06:16,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:06:16,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 20:06:16,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:16,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:06:16,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:06:16,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:06:16,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:06:16,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:06:16,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009973853] [2020-10-12 20:06:16,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:06:16,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:06:16,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108130858] [2020-10-12 20:06:16,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:06:16,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:06:16,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:06:16,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:06:16,124 INFO L87 Difference]: Start difference. First operand 26335 states and 40056 transitions. Second operand 11 states. [2020-10-12 20:06:16,535 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-12 20:06:31,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:06:31,524 INFO L93 Difference]: Finished difference Result 146546 states and 223143 transitions. [2020-10-12 20:06:31,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 20:06:31,524 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2020-10-12 20:06:31,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:06:31,743 INFO L225 Difference]: With dead ends: 146546 [2020-10-12 20:06:31,743 INFO L226 Difference]: Without dead ends: 140603 [2020-10-12 20:06:31,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=267, Invalid=855, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 20:06:31,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140603 states. [2020-10-12 20:06:34,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140603 to 26223. [2020-10-12 20:06:34,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26223 states. [2020-10-12 20:06:34,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26223 states to 26223 states and 39880 transitions. [2020-10-12 20:06:34,719 INFO L78 Accepts]: Start accepts. Automaton has 26223 states and 39880 transitions. Word has length 88 [2020-10-12 20:06:34,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:06:34,720 INFO L479 AbstractCegarLoop]: Abstraction has 26223 states and 39880 transitions. [2020-10-12 20:06:34,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:06:34,720 INFO L276 IsEmpty]: Start isEmpty. Operand 26223 states and 39880 transitions. [2020-10-12 20:06:34,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 20:06:34,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:06:34,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:06:34,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:06:34,728 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:06:34,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:06:34,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1772442091, now seen corresponding path program 1 times [2020-10-12 20:06:34,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:06:34,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623297618] [2020-10-12 20:06:34,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:06:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:34,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:34,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:35,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:36,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:36,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 20:06:36,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:06:36,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1546 [2020-10-12 20:06:36,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:36,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:06:36,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:06:36,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 20:06:36,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:36,683 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:06:36,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:06:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:36,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:36,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:36,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:06:36,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:06:36,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 20:06:36,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:36,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:06:36,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:06:36,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:06:36,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:36,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:06:36,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623297618] [2020-10-12 20:06:36,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:06:36,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:06:36,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95059555] [2020-10-12 20:06:36,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:06:36,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:06:36,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:06:36,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:06:36,746 INFO L87 Difference]: Start difference. First operand 26223 states and 39880 transitions. Second operand 11 states. [2020-10-12 20:06:36,995 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-12 20:06:42,545 WARN L193 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 22 [2020-10-12 20:06:50,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:06:50,520 INFO L93 Difference]: Finished difference Result 118860 states and 180320 transitions. [2020-10-12 20:06:50,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 20:06:50,520 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2020-10-12 20:06:50,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:06:50,659 INFO L225 Difference]: With dead ends: 118860 [2020-10-12 20:06:50,659 INFO L226 Difference]: Without dead ends: 102657 [2020-10-12 20:06:50,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=218, Invalid=652, Unknown=0, NotChecked=0, Total=870 [2020-10-12 20:06:50,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102657 states. [2020-10-12 20:06:54,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102657 to 26671. [2020-10-12 20:06:54,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26671 states. [2020-10-12 20:06:54,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26671 states to 26671 states and 40464 transitions. [2020-10-12 20:06:54,085 INFO L78 Accepts]: Start accepts. Automaton has 26671 states and 40464 transitions. Word has length 88 [2020-10-12 20:06:54,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:06:54,085 INFO L479 AbstractCegarLoop]: Abstraction has 26671 states and 40464 transitions. [2020-10-12 20:06:54,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:06:54,085 INFO L276 IsEmpty]: Start isEmpty. Operand 26671 states and 40464 transitions. [2020-10-12 20:06:54,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 20:06:54,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:06:54,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:06:54,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:06:54,094 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:06:54,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:06:54,094 INFO L82 PathProgramCache]: Analyzing trace with hash 59268725, now seen corresponding path program 1 times [2020-10-12 20:06:54,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:06:54,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833840146] [2020-10-12 20:06:54,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:06:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:54,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:54,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:54,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:55,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:55,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 20:06:55,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:06:55,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1474 [2020-10-12 20:06:55,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:55,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:06:55,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:06:55,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 20:06:55,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:56,000 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:06:56,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:06:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:56,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:56,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:56,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:06:56,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:06:56,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 20:06:56,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:56,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:06:56,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:06:56,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:06:56,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:06:56,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:06:56,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833840146] [2020-10-12 20:06:56,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:06:56,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:06:56,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386451850] [2020-10-12 20:06:56,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:06:56,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:06:56,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:06:56,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:06:56,113 INFO L87 Difference]: Start difference. First operand 26671 states and 40464 transitions. Second operand 11 states. [2020-10-12 20:06:56,442 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-12 20:07:13,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:07:13,884 INFO L93 Difference]: Finished difference Result 125387 states and 188865 transitions. [2020-10-12 20:07:13,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 20:07:13,885 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2020-10-12 20:07:13,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:07:14,025 INFO L225 Difference]: With dead ends: 125387 [2020-10-12 20:07:14,026 INFO L226 Difference]: Without dead ends: 106676 [2020-10-12 20:07:14,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=218, Invalid=652, Unknown=0, NotChecked=0, Total=870 [2020-10-12 20:07:14,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106676 states. [2020-10-12 20:07:17,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106676 to 27210. [2020-10-12 20:07:17,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27210 states. [2020-10-12 20:07:17,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27210 states to 27210 states and 41140 transitions. [2020-10-12 20:07:17,835 INFO L78 Accepts]: Start accepts. Automaton has 27210 states and 41140 transitions. Word has length 88 [2020-10-12 20:07:17,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:07:17,835 INFO L479 AbstractCegarLoop]: Abstraction has 27210 states and 41140 transitions. [2020-10-12 20:07:17,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:07:17,835 INFO L276 IsEmpty]: Start isEmpty. Operand 27210 states and 41140 transitions. [2020-10-12 20:07:17,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 20:07:17,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:07:17,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:07:17,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:07:17,842 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:07:17,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:07:17,843 INFO L82 PathProgramCache]: Analyzing trace with hash 2047149681, now seen corresponding path program 1 times [2020-10-12 20:07:17,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:07:17,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989106433] [2020-10-12 20:07:17,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:07:17,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:17,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:17,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:17,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 20:07:17,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:17,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-12 20:07:17,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:17,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:07:17,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-12 20:07:17,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 20:07:17,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:18,206 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:07:18,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:07:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:18,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:18,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:18,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:07:18,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:18,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:07:18,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:18,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:07:18,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:07:18,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:07:18,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:07:18,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:07:18,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989106433] [2020-10-12 20:07:18,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:07:18,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:07:18,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215611521] [2020-10-12 20:07:18,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:07:18,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:07:18,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:07:18,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:07:18,247 INFO L87 Difference]: Start difference. First operand 27210 states and 41140 transitions. Second operand 5 states. [2020-10-12 20:07:25,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:07:25,376 INFO L93 Difference]: Finished difference Result 52780 states and 79829 transitions. [2020-10-12 20:07:25,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:07:25,377 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-12 20:07:25,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:07:25,437 INFO L225 Difference]: With dead ends: 52780 [2020-10-12 20:07:25,438 INFO L226 Difference]: Without dead ends: 52778 [2020-10-12 20:07:25,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:07:25,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52778 states. [2020-10-12 20:07:28,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52778 to 27850. [2020-10-12 20:07:28,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27850 states. [2020-10-12 20:07:28,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27850 states to 27850 states and 41780 transitions. [2020-10-12 20:07:28,935 INFO L78 Accepts]: Start accepts. Automaton has 27850 states and 41780 transitions. Word has length 89 [2020-10-12 20:07:28,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:07:28,936 INFO L479 AbstractCegarLoop]: Abstraction has 27850 states and 41780 transitions. [2020-10-12 20:07:28,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:07:28,936 INFO L276 IsEmpty]: Start isEmpty. Operand 27850 states and 41780 transitions. [2020-10-12 20:07:28,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-12 20:07:28,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:07:28,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:07:28,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:07:28,943 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:07:28,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:07:28,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1735110188, now seen corresponding path program 1 times [2020-10-12 20:07:28,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:07:28,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437517996] [2020-10-12 20:07:28,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:07:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:28,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:29,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:29,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:30,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:30,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 20:07:30,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:07:30,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1543 [2020-10-12 20:07:30,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:30,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 20:07:30,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:07:30,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 20:07:30,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:30,911 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:07:30,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:07:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:30,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:30,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:30,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:07:30,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:30,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:07:30,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:30,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:07:30,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:07:30,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:07:30,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:30,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:07:30,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437517996] [2020-10-12 20:07:30,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:07:30,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:07:30,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41651261] [2020-10-12 20:07:30,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:07:30,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:07:30,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:07:30,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:07:30,958 INFO L87 Difference]: Start difference. First operand 27850 states and 41780 transitions. Second operand 10 states. [2020-10-12 20:07:31,193 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 20:07:47,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:07:47,292 INFO L93 Difference]: Finished difference Result 120655 states and 182013 transitions. [2020-10-12 20:07:47,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 20:07:47,293 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-10-12 20:07:47,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:07:47,415 INFO L225 Difference]: With dead ends: 120655 [2020-10-12 20:07:47,415 INFO L226 Difference]: Without dead ends: 97747 [2020-10-12 20:07:47,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-10-12 20:07:47,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97747 states. [2020-10-12 20:07:53,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97747 to 40365. [2020-10-12 20:07:53,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40365 states. [2020-10-12 20:07:53,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40365 states to 40365 states and 60666 transitions. [2020-10-12 20:07:53,742 INFO L78 Accepts]: Start accepts. Automaton has 40365 states and 60666 transitions. Word has length 90 [2020-10-12 20:07:53,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:07:53,743 INFO L479 AbstractCegarLoop]: Abstraction has 40365 states and 60666 transitions. [2020-10-12 20:07:53,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:07:53,743 INFO L276 IsEmpty]: Start isEmpty. Operand 40365 states and 60666 transitions. [2020-10-12 20:07:53,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-12 20:07:53,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:07:53,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:07:53,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:07:53,751 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:07:53,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:07:53,751 INFO L82 PathProgramCache]: Analyzing trace with hash -686322096, now seen corresponding path program 1 times [2020-10-12 20:07:53,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:07:53,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912769936] [2020-10-12 20:07:53,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:07:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:53,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:53,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:53,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 20:07:53,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:53,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-12 20:07:53,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:53,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:07:53,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 20:07:53,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 20:07:53,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:54,117 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:07:54,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:07:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:54,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:54,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:54,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:07:54,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:54,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:07:54,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:54,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:07:54,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:07:54,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:07:54,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:54,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:07:54,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912769936] [2020-10-12 20:07:54,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:07:54,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:07:54,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107226899] [2020-10-12 20:07:54,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:07:54,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:07:54,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:07:54,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:07:54,152 INFO L87 Difference]: Start difference. First operand 40365 states and 60666 transitions. Second operand 5 states. [2020-10-12 20:07:54,358 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-12 20:08:07,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:08:07,350 INFO L93 Difference]: Finished difference Result 110977 states and 166732 transitions. [2020-10-12 20:08:07,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:08:07,351 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-12 20:08:07,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:08:07,445 INFO L225 Difference]: With dead ends: 110977 [2020-10-12 20:08:07,445 INFO L226 Difference]: Without dead ends: 72991 [2020-10-12 20:08:07,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:08:07,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72991 states. [2020-10-12 20:08:18,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72991 to 72989. [2020-10-12 20:08:18,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72989 states. [2020-10-12 20:08:18,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72989 states to 72989 states and 108874 transitions. [2020-10-12 20:08:18,502 INFO L78 Accepts]: Start accepts. Automaton has 72989 states and 108874 transitions. Word has length 90 [2020-10-12 20:08:18,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:08:18,502 INFO L479 AbstractCegarLoop]: Abstraction has 72989 states and 108874 transitions. [2020-10-12 20:08:18,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:08:18,502 INFO L276 IsEmpty]: Start isEmpty. Operand 72989 states and 108874 transitions. [2020-10-12 20:08:18,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-12 20:08:18,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:08:18,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:08:18,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:08:18,509 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:08:18,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:08:18,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1054102195, now seen corresponding path program 1 times [2020-10-12 20:08:18,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:08:18,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315281793] [2020-10-12 20:08:18,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:08:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:18,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:18,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:18,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:19,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:08:19,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 20:08:19,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:08:19,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1443 [2020-10-12 20:08:19,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:08:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 20:08:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:08:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 20:08:19,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:08:20,405 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:08:20,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:08:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:20,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:20,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:08:20,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:08:20,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:08:20,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:08:20,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:08:20,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:08:20,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:08:20,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:08:20,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:08:20,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:08:20,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315281793] [2020-10-12 20:08:20,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:08:20,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:08:20,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998965371] [2020-10-12 20:08:20,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:08:20,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:08:20,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:08:20,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:08:20,457 INFO L87 Difference]: Start difference. First operand 72989 states and 108874 transitions. Second operand 10 states. [2020-10-12 20:08:20,680 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 161