/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=NARROWEST --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_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:05:42,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:05:42,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:05:42,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:05:42,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:05:42,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:05:42,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:05:42,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:05:42,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:05:42,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:05:42,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:05:42,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:05:42,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:05:42,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:05:42,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:05:42,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:05:42,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:05:42,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:05:42,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:05:42,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:05:42,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:05:42,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:05:42,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:05:42,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:05:42,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:05:42,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:05:42,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:05:42,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:05:42,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:05:42,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:05:42,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:05:42,618 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:05:42,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:05:42,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:05:42,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:05:42,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:05:42,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:05:42,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:05:42,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:05:42,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:05:42,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:05:42,624 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 [2020-10-13 15:05:42,647 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:05:42,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:05:42,650 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:05:42,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:05:42,651 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:05:42,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:05:42,651 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:05:42,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:05:42,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:05:42,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:05:42,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:05:42,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:05:42,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:05:42,653 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:05:42,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:05:42,653 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:05:42,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:05:42,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:05:42,654 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:05:42,654 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:05:42,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:05:42,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:05:42,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:05:42,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:05:42,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:05:42,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:05:42,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:05:42,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:05:42,657 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:05:42,657 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 15:05:42,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:05:42,971 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:05:42,975 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:05:42,977 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:05:42,978 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:05:42,979 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-13 15:05:43,054 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41f7ef149/42f59b51ee9541f99228db31c330a50e/FLAG1f0bb8908 [2020-10-13 15:05:43,717 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:05:43,717 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-13 15:05:43,742 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41f7ef149/42f59b51ee9541f99228db31c330a50e/FLAG1f0bb8908 [2020-10-13 15:05:43,885 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41f7ef149/42f59b51ee9541f99228db31c330a50e [2020-10-13 15:05:43,897 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:05:43,899 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:05:43,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:05:43,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:05:43,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:05:43,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:05:43" (1/1) ... [2020-10-13 15:05:43,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c524948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:05:43, skipping insertion in model container [2020-10-13 15:05:43,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:05:43" (1/1) ... [2020-10-13 15:05:43,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:05:44,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:05:45,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:05:45,560 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:05:46,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:05:46,551 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:05:46,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:05:46 WrapperNode [2020-10-13 15:05:46,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:05:46,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:05:46,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:05:46,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:05:46,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:05:46" (1/1) ... [2020-10-13 15:05:46,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:05:46" (1/1) ... [2020-10-13 15:05:46,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:05:46" (1/1) ... [2020-10-13 15:05:46,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:05:46" (1/1) ... [2020-10-13 15:05:46,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:05:46" (1/1) ... [2020-10-13 15:05:46,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:05:46" (1/1) ... [2020-10-13 15:05:46,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:05:46" (1/1) ... [2020-10-13 15:05:46,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:05:46,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:05:46,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:05:46,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:05:46,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:05:46" (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 [2020-10-13 15:05:46,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:05:46,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:05:46,842 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 15:05:46,842 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:05:46,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:05:46,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 15:05:46,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 15:05:46,844 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 15:05:46,844 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 15:05:46,845 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 15:05:46,845 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 15:05:46,845 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 15:05:46,845 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 15:05:46,845 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 15:05:46,845 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 15:05:46,846 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 15:05:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 15:05:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 15:05:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:05:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:05:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:05:50,137 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:05:50,137 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 15:05:50,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:05:50 BoogieIcfgContainer [2020-10-13 15:05:50,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:05:50,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:05:50,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:05:50,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:05:50,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:05:43" (1/3) ... [2020-10-13 15:05:50,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6a3cd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:05:50, skipping insertion in model container [2020-10-13 15:05:50,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:05:46" (2/3) ... [2020-10-13 15:05:50,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6a3cd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:05:50, skipping insertion in model container [2020-10-13 15:05:50,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:05:50" (3/3) ... [2020-10-13 15:05:50,156 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-13 15:05:50,166 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:05:50,177 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-10-13 15:05:50,191 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-10-13 15:05:50,220 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:05:50,221 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:05:50,221 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:05:50,221 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:05:50,221 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:05:50,221 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:05:50,221 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:05:50,221 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:05:50,257 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states. [2020-10-13 15:05:50,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-13 15:05:50,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:05:50,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:05:50,288 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:05:50,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:05:50,295 INFO L82 PathProgramCache]: Analyzing trace with hash -330341000, now seen corresponding path program 1 times [2020-10-13 15:05:50,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:05:50,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831848643] [2020-10-13 15:05:50,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:05:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:05:51,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:52,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:53,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:53,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:53,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:53,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:54,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:54,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:54,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:54,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:55,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:55,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:55,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:56,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:05:56,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-13 15:05:56,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 15:05:56,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-13 15:05:56,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:05:56,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:05:56,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:05:56,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 15:05:56,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 15:05:57,052 WARN L193 SmtUtils]: Spent 650.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-13 15:05:57,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:05:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:05:57,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:57,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:05:57,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:05:57,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:05:57,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 15:05:57,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:05:57,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:05:57,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:05:57,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:05:57,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:05:57,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:05:57,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831848643] [2020-10-13 15:05:57,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:05:57,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:05:57,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102428412] [2020-10-13 15:05:57,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:05:57,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:05:57,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:05:57,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:05:57,427 INFO L87 Difference]: Start difference. First operand 973 states. Second operand 5 states. [2020-10-13 15:06:08,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:06:08,055 INFO L93 Difference]: Finished difference Result 2871 states and 5146 transitions. [2020-10-13 15:06:08,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:06:08,058 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 314 [2020-10-13 15:06:08,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:06:08,087 INFO L225 Difference]: With dead ends: 2871 [2020-10-13 15:06:08,087 INFO L226 Difference]: Without dead ends: 1905 [2020-10-13 15:06:08,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:06:08,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1905 states. [2020-10-13 15:06:08,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1905 to 1809. [2020-10-13 15:06:08,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1809 states. [2020-10-13 15:06:08,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2773 transitions. [2020-10-13 15:06:08,253 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2773 transitions. Word has length 314 [2020-10-13 15:06:08,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:06:08,254 INFO L479 AbstractCegarLoop]: Abstraction has 1809 states and 2773 transitions. [2020-10-13 15:06:08,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:06:08,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2773 transitions. [2020-10-13 15:06:08,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-13 15:06:08,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:06:08,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:06:08,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:06:08,264 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:06:08,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:06:08,265 INFO L82 PathProgramCache]: Analyzing trace with hash -2039339335, now seen corresponding path program 1 times [2020-10-13 15:06:08,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:06:08,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332141269] [2020-10-13 15:06:08,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:06:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:06:08,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:08,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:08,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:09,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:09,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:09,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:09,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:09,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:09,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:09,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:10,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:10,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:10,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:12,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:12,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:12,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:13,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:06:13,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-13 15:06:13,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 15:06:13,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 15:06:13,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:06:13,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:06:13,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 15:06:13,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 15:06:13,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:06:14,077 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-13 15:06:14,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:06:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:06:14,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:14,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:06:14,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:06:14,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:06:14,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 15:06:14,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:06:14,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:06:14,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:06:14,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:06:14,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:06:14,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:06:14,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332141269] [2020-10-13 15:06:14,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:06:14,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:06:14,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667171024] [2020-10-13 15:06:14,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:06:14,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:06:14,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:06:14,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:06:14,233 INFO L87 Difference]: Start difference. First operand 1809 states and 2773 transitions. Second operand 4 states. [2020-10-13 15:06:26,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:06:26,574 INFO L93 Difference]: Finished difference Result 5382 states and 8248 transitions. [2020-10-13 15:06:26,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:06:26,575 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 316 [2020-10-13 15:06:26,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:06:26,593 INFO L225 Difference]: With dead ends: 5382 [2020-10-13 15:06:26,594 INFO L226 Difference]: Without dead ends: 3598 [2020-10-13 15:06:26,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:06:26,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3598 states. [2020-10-13 15:06:26,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3598 to 1822. [2020-10-13 15:06:26,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1822 states. [2020-10-13 15:06:26,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1822 states to 1822 states and 2792 transitions. [2020-10-13 15:06:26,696 INFO L78 Accepts]: Start accepts. Automaton has 1822 states and 2792 transitions. Word has length 316 [2020-10-13 15:06:26,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:06:26,697 INFO L479 AbstractCegarLoop]: Abstraction has 1822 states and 2792 transitions. [2020-10-13 15:06:26,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:06:26,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1822 states and 2792 transitions. [2020-10-13 15:06:26,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-13 15:06:26,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:06:26,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:06:26,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:06:26,707 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:06:26,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:06:26,708 INFO L82 PathProgramCache]: Analyzing trace with hash -838784780, now seen corresponding path program 1 times [2020-10-13 15:06:26,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:06:26,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717491747] [2020-10-13 15:06:26,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:06:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:06:26,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:27,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:27,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:27,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:27,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:27,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:27,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:28,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:28,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:28,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:28,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:28,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:29,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:29,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:29,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:31,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:06:31,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-13 15:06:31,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 15:06:31,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-13 15:06:31,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:06:31,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:06:31,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:06:31,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 15:06:31,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:06:32,554 WARN L193 SmtUtils]: Spent 545.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-13 15:06:32,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:06:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:06:32,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:32,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:06:32,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:06:32,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:06:32,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 15:06:32,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:06:32,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:06:32,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:06:32,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:06:32,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:06:32,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:06:32,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717491747] [2020-10-13 15:06:32,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:06:32,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:06:32,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45073018] [2020-10-13 15:06:32,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:06:32,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:06:32,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:06:32,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:06:32,814 INFO L87 Difference]: Start difference. First operand 1822 states and 2792 transitions. Second operand 5 states. [2020-10-13 15:06:41,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:06:41,470 INFO L93 Difference]: Finished difference Result 5346 states and 8181 transitions. [2020-10-13 15:06:41,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:06:41,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 316 [2020-10-13 15:06:41,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:06:41,489 INFO L225 Difference]: With dead ends: 5346 [2020-10-13 15:06:41,490 INFO L226 Difference]: Without dead ends: 3555 [2020-10-13 15:06:41,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:06:41,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3555 states. [2020-10-13 15:06:41,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3555 to 3462. [2020-10-13 15:06:41,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3462 states. [2020-10-13 15:06:41,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3462 states to 3462 states and 5293 transitions. [2020-10-13 15:06:41,624 INFO L78 Accepts]: Start accepts. Automaton has 3462 states and 5293 transitions. Word has length 316 [2020-10-13 15:06:41,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:06:41,625 INFO L479 AbstractCegarLoop]: Abstraction has 3462 states and 5293 transitions. [2020-10-13 15:06:41,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:06:41,625 INFO L276 IsEmpty]: Start isEmpty. Operand 3462 states and 5293 transitions. [2020-10-13 15:06:41,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-13 15:06:41,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:06:41,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:06:41,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:06:41,637 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:06:41,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:06:41,637 INFO L82 PathProgramCache]: Analyzing trace with hash -228826377, now seen corresponding path program 1 times [2020-10-13 15:06:41,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:06:41,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421445156] [2020-10-13 15:06:41,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:06:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:06:41,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:41,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:42,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:42,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:42,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:42,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:42,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:43,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:43,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:43,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:43,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:44,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:44,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:44,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:46,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:06:46,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-13 15:06:46,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:06:46,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-13 15:06:46,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:06:46,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:06:46,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 15:06:46,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:06:46,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:06:47,324 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-13 15:06:47,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:06:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:06:47,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:47,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:06:47,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:06:47,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:06:47,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 15:06:47,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:06:47,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:06:47,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:06:47,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:06:47,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:06:47,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:06:47,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421445156] [2020-10-13 15:06:47,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:06:47,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:06:47,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893191775] [2020-10-13 15:06:47,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:06:47,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:06:47,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:06:47,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:06:47,437 INFO L87 Difference]: Start difference. First operand 3462 states and 5293 transitions. Second operand 4 states. [2020-10-13 15:06:55,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:06:55,453 INFO L93 Difference]: Finished difference Result 10307 states and 15756 transitions. [2020-10-13 15:06:55,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:06:55,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 318 [2020-10-13 15:06:55,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:06:55,483 INFO L225 Difference]: With dead ends: 10307 [2020-10-13 15:06:55,483 INFO L226 Difference]: Without dead ends: 6892 [2020-10-13 15:06:55,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:06:55,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6892 states. [2020-10-13 15:06:55,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6892 to 3476. [2020-10-13 15:06:55,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3476 states. [2020-10-13 15:06:55,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3476 states to 3476 states and 5309 transitions. [2020-10-13 15:06:55,665 INFO L78 Accepts]: Start accepts. Automaton has 3476 states and 5309 transitions. Word has length 318 [2020-10-13 15:06:55,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:06:55,666 INFO L479 AbstractCegarLoop]: Abstraction has 3476 states and 5309 transitions. [2020-10-13 15:06:55,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:06:55,666 INFO L276 IsEmpty]: Start isEmpty. Operand 3476 states and 5309 transitions. [2020-10-13 15:06:55,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-13 15:06:55,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:06:55,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:06:55,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:06:55,682 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:06:55,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:06:55,683 INFO L82 PathProgramCache]: Analyzing trace with hash 948374898, now seen corresponding path program 1 times [2020-10-13 15:06:55,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:06:55,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283266059] [2020-10-13 15:06:55,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:06:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:06:56,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:56,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:56,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:56,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:57,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:57,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:57,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:58,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:58,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:58,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:58,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:58,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:58,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:58,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:59,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:59,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:00,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:07:00,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-13 15:07:00,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 15:07:00,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 15:07:00,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:07:00,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:07:00,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 15:07:00,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:07:00,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:07:01,546 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-13 15:07:01,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:07:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:07:01,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:01,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:07:01,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:07:01,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:07:01,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 15:07:01,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:07:01,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:07:01,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:07:01,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:07:01,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:07:01,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:07:01,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283266059] [2020-10-13 15:07:01,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:07:01,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:07:01,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960304405] [2020-10-13 15:07:01,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:07:01,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:07:01,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:07:01,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:07:01,656 INFO L87 Difference]: Start difference. First operand 3476 states and 5309 transitions. Second operand 5 states. [2020-10-13 15:07:11,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:07:11,929 INFO L93 Difference]: Finished difference Result 10064 states and 15315 transitions. [2020-10-13 15:07:11,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:07:11,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 320 [2020-10-13 15:07:11,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:07:11,961 INFO L225 Difference]: With dead ends: 10064 [2020-10-13 15:07:11,961 INFO L226 Difference]: Without dead ends: 6884 [2020-10-13 15:07:11,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:07:11,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6884 states. [2020-10-13 15:07:12,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6884 to 3740. [2020-10-13 15:07:12,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3740 states. [2020-10-13 15:07:12,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3740 states to 3740 states and 5769 transitions. [2020-10-13 15:07:12,168 INFO L78 Accepts]: Start accepts. Automaton has 3740 states and 5769 transitions. Word has length 320 [2020-10-13 15:07:12,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:07:12,169 INFO L479 AbstractCegarLoop]: Abstraction has 3740 states and 5769 transitions. [2020-10-13 15:07:12,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:07:12,170 INFO L276 IsEmpty]: Start isEmpty. Operand 3740 states and 5769 transitions. [2020-10-13 15:07:12,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-13 15:07:12,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:07:12,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:07:12,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:07:12,182 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:07:12,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:07:12,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1083805017, now seen corresponding path program 1 times [2020-10-13 15:07:12,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:07:12,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397684348] [2020-10-13 15:07:12,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:07:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:07:12,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:12,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:12,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:12,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:12,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:13,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:13,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:13,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:13,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:13,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:13,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:13,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:13,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:16,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:16,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:16,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:17,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:07:17,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-13 15:07:17,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 15:07:17,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-13 15:07:17,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:07:17,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:07:17,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:07:17,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 15:07:17,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:07:18,019 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-13 15:07:18,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:07:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:07:18,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:18,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:07:18,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:07:18,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:07:18,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 15:07:18,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:07:18,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:07:18,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:07:18,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:07:18,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:07:18,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:07:18,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397684348] [2020-10-13 15:07:18,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:07:18,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:07:18,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885857074] [2020-10-13 15:07:18,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:07:18,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:07:18,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:07:18,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:07:18,169 INFO L87 Difference]: Start difference. First operand 3740 states and 5769 transitions. Second operand 5 states. [2020-10-13 15:07:27,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:07:27,680 INFO L93 Difference]: Finished difference Result 10835 states and 16656 transitions. [2020-10-13 15:07:27,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:07:27,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 320 [2020-10-13 15:07:27,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:07:27,710 INFO L225 Difference]: With dead ends: 10835 [2020-10-13 15:07:27,711 INFO L226 Difference]: Without dead ends: 7283 [2020-10-13 15:07:27,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:07:27,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7283 states. [2020-10-13 15:07:28,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7283 to 7209. [2020-10-13 15:07:28,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7209 states. [2020-10-13 15:07:28,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7209 states to 7209 states and 11051 transitions. [2020-10-13 15:07:28,053 INFO L78 Accepts]: Start accepts. Automaton has 7209 states and 11051 transitions. Word has length 320 [2020-10-13 15:07:28,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:07:28,053 INFO L479 AbstractCegarLoop]: Abstraction has 7209 states and 11051 transitions. [2020-10-13 15:07:28,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:07:28,053 INFO L276 IsEmpty]: Start isEmpty. Operand 7209 states and 11051 transitions. [2020-10-13 15:07:28,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-13 15:07:28,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:07:28,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:07:28,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:07:28,072 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:07:28,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:07:28,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1747883273, now seen corresponding path program 1 times [2020-10-13 15:07:28,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:07:28,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720449620] [2020-10-13 15:07:28,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:07:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:07:28,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:28,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:28,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:28,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:28,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:28,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:28,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:29,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:29,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:29,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:29,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:29,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:30,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:31,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:31,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:31,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:32,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:32,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:33,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:07:33,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-13 15:07:33,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 15:07:33,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 15:07:33,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:07:33,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:07:33,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 15:07:33,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 15:07:33,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:07:33,984 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-13 15:07:33,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:07:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:07:33,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:34,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:07:34,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:07:34,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:07:34,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 15:07:34,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:07:34,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:07:34,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:07:34,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:07:34,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:07:34,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:07:34,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720449620] [2020-10-13 15:07:34,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:07:34,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:07:34,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554607239] [2020-10-13 15:07:34,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:07:34,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:07:34,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:07:34,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:07:34,094 INFO L87 Difference]: Start difference. First operand 7209 states and 11051 transitions. Second operand 4 states. [2020-10-13 15:07:40,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:07:40,261 INFO L93 Difference]: Finished difference Result 19609 states and 29638 transitions. [2020-10-13 15:07:40,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:07:40,261 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 322 [2020-10-13 15:07:40,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:07:40,291 INFO L225 Difference]: With dead ends: 19609 [2020-10-13 15:07:40,291 INFO L226 Difference]: Without dead ends: 13405 [2020-10-13 15:07:40,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:07:40,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13405 states. [2020-10-13 15:07:40,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13405 to 7315. [2020-10-13 15:07:40,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7315 states. [2020-10-13 15:07:40,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7315 states to 7315 states and 11194 transitions. [2020-10-13 15:07:40,793 INFO L78 Accepts]: Start accepts. Automaton has 7315 states and 11194 transitions. Word has length 322 [2020-10-13 15:07:40,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:07:40,793 INFO L479 AbstractCegarLoop]: Abstraction has 7315 states and 11194 transitions. [2020-10-13 15:07:40,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:07:40,793 INFO L276 IsEmpty]: Start isEmpty. Operand 7315 states and 11194 transitions. [2020-10-13 15:07:40,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-13 15:07:40,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:07:40,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:07:40,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:07:40,805 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:07:40,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:07:40,806 INFO L82 PathProgramCache]: Analyzing trace with hash 628469188, now seen corresponding path program 1 times [2020-10-13 15:07:40,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:07:40,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377011060] [2020-10-13 15:07:40,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:07:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:07:40,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:41,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:41,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:41,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:41,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:41,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:41,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:42,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:42,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:42,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:42,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:42,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:42,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:42,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:42,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:43,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:45,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:07:45,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-13 15:07:45,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 15:07:45,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 15:07:45,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:07:45,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:07:45,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 15:07:45,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 15:07:45,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:07:46,564 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-13 15:07:46,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:07:46,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:07:46,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:46,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:07:46,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:07:46,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:07:46,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 15:07:46,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:07:46,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:07:46,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:07:46,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:07:46,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:07:46,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:07:46,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377011060] [2020-10-13 15:07:46,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:07:46,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:07:46,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022891090] [2020-10-13 15:07:46,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:07:46,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:07:46,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:07:46,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:07:46,665 INFO L87 Difference]: Start difference. First operand 7315 states and 11194 transitions. Second operand 5 states. [2020-10-13 15:07:58,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:07:58,183 INFO L93 Difference]: Finished difference Result 19700 states and 29904 transitions. [2020-10-13 15:07:58,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:07:58,184 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2020-10-13 15:07:58,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:07:58,216 INFO L225 Difference]: With dead ends: 19700 [2020-10-13 15:07:58,216 INFO L226 Difference]: Without dead ends: 13488 [2020-10-13 15:07:58,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:07:58,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13488 states. [2020-10-13 15:07:58,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13488 to 8113. [2020-10-13 15:07:58,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8113 states. [2020-10-13 15:07:58,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8113 states to 8113 states and 12549 transitions. [2020-10-13 15:07:58,910 INFO L78 Accepts]: Start accepts. Automaton has 8113 states and 12549 transitions. Word has length 322 [2020-10-13 15:07:58,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:07:58,910 INFO L479 AbstractCegarLoop]: Abstraction has 8113 states and 12549 transitions. [2020-10-13 15:07:58,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:07:58,910 INFO L276 IsEmpty]: Start isEmpty. Operand 8113 states and 12549 transitions. [2020-10-13 15:07:58,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-13 15:07:58,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:07:58,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:07:58,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:07:58,920 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:07:58,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:07:58,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1022611182, now seen corresponding path program 1 times [2020-10-13 15:07:58,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:07:58,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079916561] [2020-10-13 15:07:58,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:07:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:07:59,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:59,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:59,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:59,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:59,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:59,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:59,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:59,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:59,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:59,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:59,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:59,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:01,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:01,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:01,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:03,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:08:03,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-13 15:08:03,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 15:08:03,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 15:08:03,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:08:03,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:08:03,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-13 15:08:03,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:08:03,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:08:04,657 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-13 15:08:04,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:08:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:08:04,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:04,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:08:04,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:08:04,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:08:04,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 15:08:04,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:08:04,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:08:04,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:08:04,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:08:04,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:08:04,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:08:04,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079916561] [2020-10-13 15:08:04,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:08:04,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:08:04,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426069404] [2020-10-13 15:08:04,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:08:04,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:08:04,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:08:04,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:08:04,737 INFO L87 Difference]: Start difference. First operand 8113 states and 12549 transitions. Second operand 4 states. [2020-10-13 15:08:11,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:08:11,795 INFO L93 Difference]: Finished difference Result 14211 states and 21904 transitions. [2020-10-13 15:08:11,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:08:11,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 323 [2020-10-13 15:08:11,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:08:11,818 INFO L225 Difference]: With dead ends: 14211 [2020-10-13 15:08:11,818 INFO L226 Difference]: Without dead ends: 9617 [2020-10-13 15:08:11,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:08:11,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9617 states. [2020-10-13 15:08:12,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9617 to 8971. [2020-10-13 15:08:12,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8971 states. [2020-10-13 15:08:12,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8971 states to 8971 states and 13962 transitions. [2020-10-13 15:08:12,472 INFO L78 Accepts]: Start accepts. Automaton has 8971 states and 13962 transitions. Word has length 323 [2020-10-13 15:08:12,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:08:12,472 INFO L479 AbstractCegarLoop]: Abstraction has 8971 states and 13962 transitions. [2020-10-13 15:08:12,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:08:12,472 INFO L276 IsEmpty]: Start isEmpty. Operand 8971 states and 13962 transitions. [2020-10-13 15:08:12,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-13 15:08:12,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:08:12,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:08:12,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:08:12,481 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:08:12,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:08:12,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1405304222, now seen corresponding path program 1 times [2020-10-13 15:08:12,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:08:12,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759541690] [2020-10-13 15:08:12,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:08:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:08:12,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:12,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:12,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:12,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:12,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:13,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:13,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:13,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:13,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:13,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:13,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:13,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:13,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:14,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:14,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:15,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:16,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:16,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:16,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:16,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:16,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:17,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:08:17,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-13 15:08:17,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-13 15:08:17,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 15:08:17,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:08:17,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:08:17,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 15:08:17,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:08:17,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:08:18,134 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-13 15:08:18,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:08:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:08:18,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:18,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:08:18,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:08:18,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:08:18,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:08:18,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:08:18,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:08:18,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:08:18,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:08:18,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:08:18,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:08:18,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759541690] [2020-10-13 15:08:18,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:08:18,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:08:18,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154460404] [2020-10-13 15:08:18,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:08:18,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:08:18,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:08:18,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:08:18,216 INFO L87 Difference]: Start difference. First operand 8971 states and 13962 transitions. Second operand 4 states. [2020-10-13 15:08:24,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:08:24,909 INFO L93 Difference]: Finished difference Result 23283 states and 35635 transitions. [2020-10-13 15:08:24,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:08:24,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-10-13 15:08:24,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:08:24,937 INFO L225 Difference]: With dead ends: 23283 [2020-10-13 15:08:24,937 INFO L226 Difference]: Without dead ends: 16179 [2020-10-13 15:08:24,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:08:24,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16179 states. [2020-10-13 15:08:25,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16179 to 9202. [2020-10-13 15:08:25,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9202 states. [2020-10-13 15:08:25,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9202 states to 9202 states and 14253 transitions. [2020-10-13 15:08:25,738 INFO L78 Accepts]: Start accepts. Automaton has 9202 states and 14253 transitions. Word has length 324 [2020-10-13 15:08:25,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:08:25,738 INFO L479 AbstractCegarLoop]: Abstraction has 9202 states and 14253 transitions. [2020-10-13 15:08:25,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:08:25,739 INFO L276 IsEmpty]: Start isEmpty. Operand 9202 states and 14253 transitions. [2020-10-13 15:08:25,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-13 15:08:25,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:08:25,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:08:25,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:08:25,748 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:08:25,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:08:25,749 INFO L82 PathProgramCache]: Analyzing trace with hash 285890137, now seen corresponding path program 1 times [2020-10-13 15:08:25,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:08:25,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154261999] [2020-10-13 15:08:25,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:08:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:08:25,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:25,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:25,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:26,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:26,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:26,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:26,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:26,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:26,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:26,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:26,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:26,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:26,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:26,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:27,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:27,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:29,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:29,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:30,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:08:30,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-13 15:08:30,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 15:08:30,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 15:08:30,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:08:30,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:08:30,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 15:08:30,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 15:08:30,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:08:31,471 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-13 15:08:31,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:08:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:08:31,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:31,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:08:31,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:08:31,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:08:31,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 15:08:31,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:08:31,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:08:31,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:08:31,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:08:31,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:08:31,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:08:31,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154261999] [2020-10-13 15:08:31,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:08:31,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:08:31,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640271777] [2020-10-13 15:08:31,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:08:31,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:08:31,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:08:31,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:08:31,586 INFO L87 Difference]: Start difference. First operand 9202 states and 14253 transitions. Second operand 5 states. [2020-10-13 15:08:44,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:08:44,016 INFO L93 Difference]: Finished difference Result 24485 states and 37705 transitions. [2020-10-13 15:08:44,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:08:44,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-10-13 15:08:44,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:08:44,036 INFO L225 Difference]: With dead ends: 24485 [2020-10-13 15:08:44,037 INFO L226 Difference]: Without dead ends: 17227 [2020-10-13 15:08:44,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:08:44,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17227 states. [2020-10-13 15:08:44,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17227 to 10967. [2020-10-13 15:08:44,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10967 states. [2020-10-13 15:08:44,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10967 states to 10967 states and 17185 transitions. [2020-10-13 15:08:44,880 INFO L78 Accepts]: Start accepts. Automaton has 10967 states and 17185 transitions. Word has length 324 [2020-10-13 15:08:44,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:08:44,880 INFO L479 AbstractCegarLoop]: Abstraction has 10967 states and 17185 transitions. [2020-10-13 15:08:44,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:08:44,880 INFO L276 IsEmpty]: Start isEmpty. Operand 10967 states and 17185 transitions. [2020-10-13 15:08:44,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-13 15:08:44,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:08:44,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:08:44,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:08:44,892 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:08:44,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:08:44,892 INFO L82 PathProgramCache]: Analyzing trace with hash 2143932658, now seen corresponding path program 1 times [2020-10-13 15:08:44,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:08:44,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154973635] [2020-10-13 15:08:44,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:08:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:08:44,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:45,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:45,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:45,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:45,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:45,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:45,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:45,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:45,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:45,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:46,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:46,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:46,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:49,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:49,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:49,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:49,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:08:49,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-13 15:08:49,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 15:08:49,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-13 15:08:49,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:08:49,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:08:49,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 15:08:49,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 15:08:49,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:08:50,579 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-13 15:08:50,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:08:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:08:50,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:50,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:08:50,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:08:50,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:08:50,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 15:08:50,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:08:50,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:08:50,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:08:50,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:08:50,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:08:50,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:08:50,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154973635] [2020-10-13 15:08:50,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:08:50,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:08:50,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847090058] [2020-10-13 15:08:50,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:08:50,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:08:50,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:08:50,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:08:50,699 INFO L87 Difference]: Start difference. First operand 10967 states and 17185 transitions. Second operand 4 states. [2020-10-13 15:09:02,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:09:02,636 INFO L93 Difference]: Finished difference Result 27444 states and 42343 transitions. [2020-10-13 15:09:02,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:09:02,637 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-10-13 15:09:02,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:09:02,661 INFO L225 Difference]: With dead ends: 27444 [2020-10-13 15:09:02,662 INFO L226 Difference]: Without dead ends: 19849 [2020-10-13 15:09:02,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:09:02,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19849 states. [2020-10-13 15:09:04,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19849 to 19663. [2020-10-13 15:09:04,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19663 states. [2020-10-13 15:09:04,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19663 states to 19663 states and 30390 transitions. [2020-10-13 15:09:04,100 INFO L78 Accepts]: Start accepts. Automaton has 19663 states and 30390 transitions. Word has length 326 [2020-10-13 15:09:04,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:09:04,100 INFO L479 AbstractCegarLoop]: Abstraction has 19663 states and 30390 transitions. [2020-10-13 15:09:04,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:09:04,100 INFO L276 IsEmpty]: Start isEmpty. Operand 19663 states and 30390 transitions. [2020-10-13 15:09:04,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-13 15:09:04,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:09:04,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:09:04,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 15:09:04,120 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:09:04,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:09:04,120 INFO L82 PathProgramCache]: Analyzing trace with hash -384843136, now seen corresponding path program 1 times [2020-10-13 15:09:04,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:09:04,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083077400] [2020-10-13 15:09:04,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:09:04,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:09:04,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:04,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:04,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:04,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:04,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:05,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:05,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:05,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:05,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:05,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:05,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:05,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:05,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:05,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:05,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:08,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:08,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:09,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:09:09,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-13 15:09:09,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 15:09:09,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 15:09:09,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:09:09,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:09:09,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 15:09:09,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 15:09:09,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:09:09,888 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-13 15:09:09,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:09:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:09:09,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:09,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:09:09,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:09:09,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:09:09,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:09:09,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:09:09,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:09:09,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:09:09,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:09:09,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:09:09,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:09:09,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083077400] [2020-10-13 15:09:09,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:09:09,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:09:09,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717809092] [2020-10-13 15:09:09,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:09:09,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:09:09,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:09:09,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:09:09,986 INFO L87 Difference]: Start difference. First operand 19663 states and 30390 transitions. Second operand 5 states. [2020-10-13 15:09:17,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:09:17,298 INFO L93 Difference]: Finished difference Result 31828 states and 48706 transitions. [2020-10-13 15:09:17,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:09:17,299 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 326 [2020-10-13 15:09:17,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:09:17,317 INFO L225 Difference]: With dead ends: 31828 [2020-10-13 15:09:17,317 INFO L226 Difference]: Without dead ends: 17536 [2020-10-13 15:09:17,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:09:17,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17536 states. [2020-10-13 15:09:18,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17536 to 17047. [2020-10-13 15:09:18,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17047 states. [2020-10-13 15:09:18,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17047 states to 17047 states and 26413 transitions. [2020-10-13 15:09:18,253 INFO L78 Accepts]: Start accepts. Automaton has 17047 states and 26413 transitions. Word has length 326 [2020-10-13 15:09:18,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:09:18,253 INFO L479 AbstractCegarLoop]: Abstraction has 17047 states and 26413 transitions. [2020-10-13 15:09:18,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:09:18,253 INFO L276 IsEmpty]: Start isEmpty. Operand 17047 states and 26413 transitions. [2020-10-13 15:09:18,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-13 15:09:18,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:09:18,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:09:18,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 15:09:18,265 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:09:18,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:09:18,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1729810046, now seen corresponding path program 1 times [2020-10-13 15:09:18,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:09:18,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838903100] [2020-10-13 15:09:18,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:09:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:09:18,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:18,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:18,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:18,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:18,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:18,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:18,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:18,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:18,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:18,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:19,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:19,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:19,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:19,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:22,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:22,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:23,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:23,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:09:23,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-13 15:09:23,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 15:09:23,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:09:23,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:09:23,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:09:23,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 15:09:23,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 15:09:23,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:09:23,929 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-13 15:09:23,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:09:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:09:23,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:23,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:09:23,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:09:23,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:09:23,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:09:23,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:09:23,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:09:23,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:09:23,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:09:23,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:09:24,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:09:24,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838903100] [2020-10-13 15:09:24,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:09:24,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:09:24,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960625662] [2020-10-13 15:09:24,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:09:24,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:09:24,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:09:24,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:09:24,046 INFO L87 Difference]: Start difference. First operand 17047 states and 26413 transitions. Second operand 4 states.