/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_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:12:20,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:12:20,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:12:20,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:12:20,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:12:20,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:12:20,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:12:20,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:12:20,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:12:20,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:12:20,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:12:20,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:12:20,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:12:20,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:12:20,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:12:20,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:12:20,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:12:20,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:12:20,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:12:20,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:12:20,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:12:20,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:12:20,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:12:20,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:12:20,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:12:20,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:12:20,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:12:20,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:12:20,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:12:20,626 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:12:20,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:12:20,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:12:20,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:12:20,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:12:20,630 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:12:20,630 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:12:20,631 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:12:20,631 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:12:20,631 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:12:20,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:12:20,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:12:20,633 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 19:12:20,657 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:12:20,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:12:20,659 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:12:20,659 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:12:20,659 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:12:20,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:12:20,660 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:12:20,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:12:20,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:12:20,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:12:20,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:12:20,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:12:20,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:12:20,661 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:12:20,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:12:20,662 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:12:20,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:12:20,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:12:20,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:12:20,662 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:12:20,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:12:20,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:12:20,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:12:20,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:12:20,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:12:20,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:12:20,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:12:20,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:12:20,664 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:12:20,665 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 19:12:20,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:12:20,995 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:12:20,998 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:12:21,000 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:12:21,001 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:12:21,001 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-12 19:12:21,078 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/717a2d086/32dbd91fcc25495196df5852635de74a/FLAGce6d9df75 [2020-10-12 19:12:21,680 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:12:21,681 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-12 19:12:21,698 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/717a2d086/32dbd91fcc25495196df5852635de74a/FLAGce6d9df75 [2020-10-12 19:12:21,921 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/717a2d086/32dbd91fcc25495196df5852635de74a [2020-10-12 19:12:21,930 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:12:21,931 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:12:21,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:12:21,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:12:21,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:12:21,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:12:21" (1/1) ... [2020-10-12 19:12:21,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@658c4011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:12:21, skipping insertion in model container [2020-10-12 19:12:21,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:12:21" (1/1) ... [2020-10-12 19:12:21,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:12:22,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:12:22,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:12:22,462 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:12:22,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:12:22,767 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:12:22,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:12:22 WrapperNode [2020-10-12 19:12:22,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:12:22,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:12:22,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:12:22,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:12:22,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:12:22" (1/1) ... [2020-10-12 19:12:22,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:12:22" (1/1) ... [2020-10-12 19:12:22,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:12:22" (1/1) ... [2020-10-12 19:12:22,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:12:22" (1/1) ... [2020-10-12 19:12:22,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:12:22" (1/1) ... [2020-10-12 19:12:22,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:12:22" (1/1) ... [2020-10-12 19:12:22,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:12:22" (1/1) ... [2020-10-12 19:12:22,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:12:22,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:12:22,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:12:22,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:12:22,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:12:22" (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 19:12:22,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:12:22,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:12:22,952 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:12:22,952 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:12:22,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:12:22,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:12:22,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:12:22,955 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:12:22,955 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:12:22,955 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:12:22,955 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:12:22,955 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:12:22,956 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:12:22,956 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:12:22,956 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:12:22,957 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:12:22,957 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:12:22,957 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:12:22,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:12:22,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:12:24,303 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:12:24,304 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:12:24,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:12:24 BoogieIcfgContainer [2020-10-12 19:12:24,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:12:24,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:12:24,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:12:24,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:12:24,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:12:21" (1/3) ... [2020-10-12 19:12:24,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b97183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:12:24, skipping insertion in model container [2020-10-12 19:12:24,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:12:22" (2/3) ... [2020-10-12 19:12:24,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b97183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:12:24, skipping insertion in model container [2020-10-12 19:12:24,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:12:24" (3/3) ... [2020-10-12 19:12:24,320 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-12 19:12:24,331 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:12:24,340 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:12:24,355 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:12:24,382 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:12:24,383 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:12:24,383 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:12:24,383 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:12:24,383 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:12:24,383 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:12:24,384 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:12:24,384 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:12:24,408 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states. [2020-10-12 19:12:24,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-12 19:12:24,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:12:24,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:12:24,426 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:12:24,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:12:24,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1078197889, now seen corresponding path program 1 times [2020-10-12 19:12:24,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:12:24,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229109576] [2020-10-12 19:12:24,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:12:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:25,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:25,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:25,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:25,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:26,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:26,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:26,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:26,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:26,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:27,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:27,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:28,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:28,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:29,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:29,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-12 19:12:29,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:12:29,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 19:12:29,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:29,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:12:29,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:12:29,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 19:12:29,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 19:12:30,578 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:12:30,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:12:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:30,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:30,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:30,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:12:30,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:12:30,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:12:30,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:30,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:12:30,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:12:30,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:12:30,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:30,683 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 19:12:30,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229109576] [2020-10-12 19:12:30,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:12:30,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:12:30,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824685480] [2020-10-12 19:12:30,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:12:30,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:12:30,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:12:30,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:12:30,714 INFO L87 Difference]: Start difference. First operand 299 states. Second operand 5 states. [2020-10-12 19:12:33,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:12:33,533 INFO L93 Difference]: Finished difference Result 845 states and 1505 transitions. [2020-10-12 19:12:33,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:12:33,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-12 19:12:33,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:12:33,568 INFO L225 Difference]: With dead ends: 845 [2020-10-12 19:12:33,568 INFO L226 Difference]: Without dead ends: 563 [2020-10-12 19:12:33,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:12:33,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-10-12 19:12:33,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 561. [2020-10-12 19:12:33,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2020-10-12 19:12:33,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 809 transitions. [2020-10-12 19:12:33,712 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 809 transitions. Word has length 145 [2020-10-12 19:12:33,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:12:33,713 INFO L479 AbstractCegarLoop]: Abstraction has 561 states and 809 transitions. [2020-10-12 19:12:33,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:12:33,713 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 809 transitions. [2020-10-12 19:12:33,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-12 19:12:33,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:12:33,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:12:33,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:12:33,719 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:12:33,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:12:33,720 INFO L82 PathProgramCache]: Analyzing trace with hash 994092946, now seen corresponding path program 1 times [2020-10-12 19:12:33,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:12:33,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458994284] [2020-10-12 19:12:33,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:12:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:33,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:33,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:34,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:34,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:34,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:34,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:34,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:34,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:34,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:35,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:35,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:35,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:38,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:38,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 19:12:38,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:12:38,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:12:38,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:38,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:12:38,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:12:38,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 19:12:38,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:39,203 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:12:39,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:12:39,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:39,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:39,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:39,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:12:39,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:12:39,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:12:39,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:39,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:12:39,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:12:39,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:12:39,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 19:12:39,342 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 19:12:39,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458994284] [2020-10-12 19:12:39,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:12:39,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:12:39,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999267853] [2020-10-12 19:12:39,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:12:39,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:12:39,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:12:39,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:12:39,351 INFO L87 Difference]: Start difference. First operand 561 states and 809 transitions. Second operand 5 states. [2020-10-12 19:12:41,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:12:41,985 INFO L93 Difference]: Finished difference Result 1620 states and 2328 transitions. [2020-10-12 19:12:41,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:12:41,986 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-12 19:12:41,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:12:41,994 INFO L225 Difference]: With dead ends: 1620 [2020-10-12 19:12:41,994 INFO L226 Difference]: Without dead ends: 1072 [2020-10-12 19:12:41,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:12:41,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2020-10-12 19:12:42,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1070. [2020-10-12 19:12:42,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1070 states. [2020-10-12 19:12:42,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1522 transitions. [2020-10-12 19:12:42,056 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1522 transitions. Word has length 146 [2020-10-12 19:12:42,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:12:42,056 INFO L479 AbstractCegarLoop]: Abstraction has 1070 states and 1522 transitions. [2020-10-12 19:12:42,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:12:42,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1522 transitions. [2020-10-12 19:12:42,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-12 19:12:42,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:12:42,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:12:42,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:12:42,062 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:12:42,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:12:42,062 INFO L82 PathProgramCache]: Analyzing trace with hash 38350683, now seen corresponding path program 1 times [2020-10-12 19:12:42,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:12:42,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198853048] [2020-10-12 19:12:42,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:12:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:42,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:42,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:42,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:42,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:42,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:42,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:42,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:43,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:43,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:43,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:46,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:46,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:46,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:47,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:47,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-12 19:12:47,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:12:47,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 19:12:47,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:47,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:12:47,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 19:12:47,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 19:12:47,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:12:47,454 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:12:47,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:12:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:47,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:47,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:47,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:12:47,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:12:47,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:12:47,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:47,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:12:47,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:12:47,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:12:47,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:47,507 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 19:12:47,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198853048] [2020-10-12 19:12:47,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:12:47,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:12:47,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115567303] [2020-10-12 19:12:47,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:12:47,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:12:47,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:12:47,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:12:47,510 INFO L87 Difference]: Start difference. First operand 1070 states and 1522 transitions. Second operand 5 states. [2020-10-12 19:12:48,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:12:48,700 INFO L93 Difference]: Finished difference Result 1952 states and 2794 transitions. [2020-10-12 19:12:48,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:12:48,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-12 19:12:48,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:12:48,707 INFO L225 Difference]: With dead ends: 1952 [2020-10-12 19:12:48,707 INFO L226 Difference]: Without dead ends: 1070 [2020-10-12 19:12:48,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 19:12:48,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2020-10-12 19:12:48,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1070. [2020-10-12 19:12:48,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1070 states. [2020-10-12 19:12:48,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1518 transitions. [2020-10-12 19:12:48,768 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1518 transitions. Word has length 147 [2020-10-12 19:12:48,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:12:48,769 INFO L479 AbstractCegarLoop]: Abstraction has 1070 states and 1518 transitions. [2020-10-12 19:12:48,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:12:48,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1518 transitions. [2020-10-12 19:12:48,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-12 19:12:48,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:12:48,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:12:48,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:12:48,773 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:12:48,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:12:48,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1269608916, now seen corresponding path program 1 times [2020-10-12 19:12:48,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:12:48,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976753168] [2020-10-12 19:12:48,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:12:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:48,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:48,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:48,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:48,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:49,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:49,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:49,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:49,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:49,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:49,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:49,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:50,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:50,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:51,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:53,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:53,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-12 19:12:53,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:12:53,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:12:53,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:53,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:12:53,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:12:53,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 19:12:53,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:54,088 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:12:54,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:12:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:54,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:54,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:54,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:12:54,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:12:54,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:12:54,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:54,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:12:54,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:12:54,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:12:54,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:54,151 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 19:12:54,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976753168] [2020-10-12 19:12:54,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:12:54,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:12:54,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155347043] [2020-10-12 19:12:54,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:12:54,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:12:54,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:12:54,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:12:54,155 INFO L87 Difference]: Start difference. First operand 1070 states and 1518 transitions. Second operand 5 states. [2020-10-12 19:12:56,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:12:56,509 INFO L93 Difference]: Finished difference Result 2608 states and 3684 transitions. [2020-10-12 19:12:56,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:12:56,510 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-12 19:12:56,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:12:56,519 INFO L225 Difference]: With dead ends: 2608 [2020-10-12 19:12:56,519 INFO L226 Difference]: Without dead ends: 1585 [2020-10-12 19:12:56,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 19:12:56,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2020-10-12 19:12:56,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1581. [2020-10-12 19:12:56,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-10-12 19:12:56,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2208 transitions. [2020-10-12 19:12:56,606 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2208 transitions. Word has length 148 [2020-10-12 19:12:56,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:12:56,607 INFO L479 AbstractCegarLoop]: Abstraction has 1581 states and 2208 transitions. [2020-10-12 19:12:56,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:12:56,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2208 transitions. [2020-10-12 19:12:56,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-12 19:12:56,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:12:56,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:12:56,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:12:56,613 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:12:56,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:12:56,613 INFO L82 PathProgramCache]: Analyzing trace with hash 432823913, now seen corresponding path program 1 times [2020-10-12 19:12:56,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:12:56,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830345879] [2020-10-12 19:12:56,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:12:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:56,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:56,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:56,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:56,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:56,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:57,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:57,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:57,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:57,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:57,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:58,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:58,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:01,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:01,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-12 19:13:01,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:13:01,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:13:01,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:01,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:13:01,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:13:01,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 19:13:01,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:13:01,965 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:13:01,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:13:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:01,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:01,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:01,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:13:01,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:13:01,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:13:01,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:01,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:13:01,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:13:01,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:13:01,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:13:02,057 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 19:13:02,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830345879] [2020-10-12 19:13:02,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:13:02,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:13:02,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133776387] [2020-10-12 19:13:02,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:13:02,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:13:02,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:13:02,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:13:02,064 INFO L87 Difference]: Start difference. First operand 1581 states and 2208 transitions. Second operand 5 states. [2020-10-12 19:13:04,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:13:04,496 INFO L93 Difference]: Finished difference Result 4203 states and 5907 transitions. [2020-10-12 19:13:04,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:13:04,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-12 19:13:04,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:13:04,514 INFO L225 Difference]: With dead ends: 4203 [2020-10-12 19:13:04,515 INFO L226 Difference]: Without dead ends: 3028 [2020-10-12 19:13:04,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 19:13:04,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3028 states. [2020-10-12 19:13:04,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3028 to 3026. [2020-10-12 19:13:04,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3026 states. [2020-10-12 19:13:04,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3026 states to 3026 states and 4171 transitions. [2020-10-12 19:13:04,693 INFO L78 Accepts]: Start accepts. Automaton has 3026 states and 4171 transitions. Word has length 155 [2020-10-12 19:13:04,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:13:04,694 INFO L479 AbstractCegarLoop]: Abstraction has 3026 states and 4171 transitions. [2020-10-12 19:13:04,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:13:04,694 INFO L276 IsEmpty]: Start isEmpty. Operand 3026 states and 4171 transitions. [2020-10-12 19:13:04,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-12 19:13:04,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:13:04,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:13:04,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:13:04,701 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:13:04,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:13:04,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1095481474, now seen corresponding path program 1 times [2020-10-12 19:13:04,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:13:04,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502841944] [2020-10-12 19:13:04,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:13:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:04,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:04,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:04,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:04,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:04,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:04,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:05,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:05,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:05,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:05,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:07,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:07,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:09,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:09,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-12 19:13:09,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:13:09,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 19:13:09,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:09,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:13:09,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:13:09,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 19:13:09,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:13:10,014 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:13:10,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:13:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:10,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:10,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:10,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:13:10,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:13:10,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:13:10,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:10,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:13:10,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:13:10,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:13:10,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:13:10,076 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 19:13:10,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502841944] [2020-10-12 19:13:10,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:13:10,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:13:10,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333587813] [2020-10-12 19:13:10,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:13:10,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:13:10,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:13:10,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:13:10,079 INFO L87 Difference]: Start difference. First operand 3026 states and 4171 transitions. Second operand 5 states. [2020-10-12 19:13:10,314 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-12 19:13:12,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:13:12,618 INFO L93 Difference]: Finished difference Result 4906 states and 6777 transitions. [2020-10-12 19:13:12,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:13:12,619 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-12 19:13:12,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:13:12,635 INFO L225 Difference]: With dead ends: 4906 [2020-10-12 19:13:12,635 INFO L226 Difference]: Without dead ends: 3056 [2020-10-12 19:13:12,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:13:12,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3056 states. [2020-10-12 19:13:12,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3056 to 3050. [2020-10-12 19:13:12,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3050 states. [2020-10-12 19:13:12,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3050 states to 3050 states and 4178 transitions. [2020-10-12 19:13:12,821 INFO L78 Accepts]: Start accepts. Automaton has 3050 states and 4178 transitions. Word has length 156 [2020-10-12 19:13:12,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:13:12,822 INFO L479 AbstractCegarLoop]: Abstraction has 3050 states and 4178 transitions. [2020-10-12 19:13:12,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:13:12,822 INFO L276 IsEmpty]: Start isEmpty. Operand 3050 states and 4178 transitions. [2020-10-12 19:13:12,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-12 19:13:12,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:13:12,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:13:12,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:13:12,829 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:13:12,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:13:12,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1966962834, now seen corresponding path program 1 times [2020-10-12 19:13:12,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:13:12,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549247907] [2020-10-12 19:13:12,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:13:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:12,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:12,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:12,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:12,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:13,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:13,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:13,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:13,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:13,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:13,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:14,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:14,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:15,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:15,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:15,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:15,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:17,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:17,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-12 19:13:17,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 19:13:17,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 19:13:17,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:17,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:13:17,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:13:17,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 19:13:17,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:13:18,083 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:13:18,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:13:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:18,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:18,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:18,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:13:18,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:13:18,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:13:18,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:18,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:13:18,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:13:18,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:13:18,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:13:18,143 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 19:13:18,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549247907] [2020-10-12 19:13:18,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:13:18,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:13:18,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347791129] [2020-10-12 19:13:18,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:13:18,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:13:18,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:13:18,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:13:18,146 INFO L87 Difference]: Start difference. First operand 3050 states and 4178 transitions. Second operand 5 states. [2020-10-12 19:13:20,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:13:20,364 INFO L93 Difference]: Finished difference Result 8715 states and 11895 transitions. [2020-10-12 19:13:20,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:13:20,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-12 19:13:20,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:13:20,385 INFO L225 Difference]: With dead ends: 8715 [2020-10-12 19:13:20,385 INFO L226 Difference]: Without dead ends: 5851 [2020-10-12 19:13:20,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:13:20,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5851 states. [2020-10-12 19:13:20,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5851 to 5849. [2020-10-12 19:13:20,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5849 states. [2020-10-12 19:13:20,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5849 states to 5849 states and 7880 transitions. [2020-10-12 19:13:20,725 INFO L78 Accepts]: Start accepts. Automaton has 5849 states and 7880 transitions. Word has length 157 [2020-10-12 19:13:20,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:13:20,725 INFO L479 AbstractCegarLoop]: Abstraction has 5849 states and 7880 transitions. [2020-10-12 19:13:20,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:13:20,725 INFO L276 IsEmpty]: Start isEmpty. Operand 5849 states and 7880 transitions. [2020-10-12 19:13:20,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-12 19:13:20,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:13:20,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:13:20,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:13:20,738 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:13:20,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:13:20,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1544386285, now seen corresponding path program 1 times [2020-10-12 19:13:20,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:13:20,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107710099] [2020-10-12 19:13:20,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:13:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:20,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:20,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:20,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:20,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:20,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:23,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:23,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:23,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:25,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:25,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-12 19:13:25,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:13:25,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-12 19:13:25,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:25,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:13:25,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:13:25,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 19:13:25,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:13:26,020 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:13:26,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:13:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:26,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:26,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:26,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:13:26,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:13:26,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:13:26,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:26,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:13:26,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:13:26,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:13:26,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:13:26,091 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 19:13:26,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107710099] [2020-10-12 19:13:26,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:13:26,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:13:26,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426601273] [2020-10-12 19:13:26,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:13:26,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:13:26,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:13:26,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:13:26,093 INFO L87 Difference]: Start difference. First operand 5849 states and 7880 transitions. Second operand 5 states. [2020-10-12 19:13:28,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:13:28,440 INFO L93 Difference]: Finished difference Result 15077 states and 20342 transitions. [2020-10-12 19:13:28,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:13:28,441 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-12 19:13:28,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:13:28,472 INFO L225 Difference]: With dead ends: 15077 [2020-10-12 19:13:28,473 INFO L226 Difference]: Without dead ends: 9596 [2020-10-12 19:13:28,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:13:28,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9596 states. [2020-10-12 19:13:28,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9596 to 9562. [2020-10-12 19:13:28,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9562 states. [2020-10-12 19:13:28,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9562 states to 9562 states and 12749 transitions. [2020-10-12 19:13:28,977 INFO L78 Accepts]: Start accepts. Automaton has 9562 states and 12749 transitions. Word has length 158 [2020-10-12 19:13:28,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:13:28,977 INFO L479 AbstractCegarLoop]: Abstraction has 9562 states and 12749 transitions. [2020-10-12 19:13:28,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:13:28,978 INFO L276 IsEmpty]: Start isEmpty. Operand 9562 states and 12749 transitions. [2020-10-12 19:13:28,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-12 19:13:28,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:13:28,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:13:28,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:13:28,994 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:13:28,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:13:28,995 INFO L82 PathProgramCache]: Analyzing trace with hash 805350453, now seen corresponding path program 1 times [2020-10-12 19:13:28,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:13:28,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79390460] [2020-10-12 19:13:28,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:13:29,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:29,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:29,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:29,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:29,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:29,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:29,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:34,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:34,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-12 19:13:34,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:13:34,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 19:13:34,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:34,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:13:34,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-12 19:13:34,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 19:13:34,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:13:34,577 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:13:34,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:13:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:34,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:34,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:34,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:13:34,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:13:34,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:13:34,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:34,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:13:34,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:13:34,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:13:34,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:13:34,657 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 19:13:34,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79390460] [2020-10-12 19:13:34,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:13:34,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:13:34,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832485935] [2020-10-12 19:13:34,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:13:34,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:13:34,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:13:34,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:13:34,660 INFO L87 Difference]: Start difference. First operand 9562 states and 12749 transitions. Second operand 12 states. [2020-10-12 19:13:35,241 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 196 [2020-10-12 19:13:38,568 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 34 [2020-10-12 19:13:40,742 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 36