/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:32:59,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:32:59,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:32:59,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:32:59,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:32:59,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:32:59,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:32:59,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:32:59,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:32:59,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:32:59,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:32:59,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:32:59,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:32:59,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:32:59,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:32:59,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:32:59,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:32:59,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:32:59,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:32:59,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:32:59,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:32:59,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:32:59,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:32:59,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:32:59,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:32:59,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:32:59,118 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:32:59,119 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:32:59,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:32:59,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:32:59,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:32:59,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:32:59,122 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:32:59,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:32:59,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:32:59,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:32:59,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:32:59,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:32:59,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:32:59,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:32:59,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:32:59,127 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 [2020-10-15 03:32:59,149 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:32:59,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:32:59,150 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:32:59,150 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:32:59,151 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:32:59,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:32:59,151 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:32:59,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:32:59,151 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:32:59,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:32:59,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:32:59,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:32:59,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:32:59,152 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:32:59,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:32:59,153 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:32:59,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:32:59,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:32:59,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:32:59,153 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:32:59,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:32:59,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:32:59,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:32:59,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:32:59,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:32:59,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:32:59,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:32:59,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:32:59,155 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:32:59,155 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:32:59,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:32:59,452 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:32:59,458 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:32:59,460 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:32:59,460 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:32:59,461 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+lhb-reducer.c [2020-10-15 03:32:59,524 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ea253ece/745982e825734971bdfa70770b87d554/FLAG39ae0c6db [2020-10-15 03:33:00,280 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:33:00,281 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+lhb-reducer.c [2020-10-15 03:33:00,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ea253ece/745982e825734971bdfa70770b87d554/FLAG39ae0c6db [2020-10-15 03:33:00,788 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ea253ece/745982e825734971bdfa70770b87d554 [2020-10-15 03:33:00,799 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:33:00,801 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:33:00,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:33:00,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:33:00,806 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:33:00,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:33:00" (1/1) ... [2020-10-15 03:33:00,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35272ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:00, skipping insertion in model container [2020-10-15 03:33:00,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:33:00" (1/1) ... [2020-10-15 03:33:00,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:33:01,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:33:03,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:33:03,259 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:33:04,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:33:04,533 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:33:04,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:04 WrapperNode [2020-10-15 03:33:04,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:33:04,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:33:04,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:33:04,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:33:04,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:04" (1/1) ... [2020-10-15 03:33:04,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:04" (1/1) ... [2020-10-15 03:33:04,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:04" (1/1) ... [2020-10-15 03:33:04,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:04" (1/1) ... [2020-10-15 03:33:04,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:04" (1/1) ... [2020-10-15 03:33:04,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:04" (1/1) ... [2020-10-15 03:33:04,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:04" (1/1) ... [2020-10-15 03:33:04,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:33:04,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:33:04,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:33:04,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:33:04,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:04" (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 [2020-10-15 03:33:04,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:33:04,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:33:04,989 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:33:04,989 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:33:04,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:33:04,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:33:04,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:33:04,991 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:33:04,991 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:33:04,992 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:33:04,992 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:33:04,992 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:33:04,992 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:33:04,993 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:33:04,993 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:33:04,994 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:33:04,994 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:33:04,994 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-15 03:33:04,994 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-15 03:33:04,995 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:33:04,995 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:33:04,995 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:33:04,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:33:04,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:33:11,849 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:33:11,850 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:33:11,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:33:11 BoogieIcfgContainer [2020-10-15 03:33:11,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:33:11,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:33:11,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:33:11,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:33:11,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:33:00" (1/3) ... [2020-10-15 03:33:11,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d18eb06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:33:11, skipping insertion in model container [2020-10-15 03:33:11,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:04" (2/3) ... [2020-10-15 03:33:11,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d18eb06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:33:11, skipping insertion in model container [2020-10-15 03:33:11,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:33:11" (3/3) ... [2020-10-15 03:33:11,885 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+lhb-reducer.c [2020-10-15 03:33:11,896 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:33:11,913 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 29 error locations. [2020-10-15 03:33:11,928 INFO L251 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2020-10-15 03:33:11,967 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:33:11,967 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:33:11,967 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:33:11,967 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:33:11,967 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:33:11,968 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:33:11,968 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:33:11,968 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:33:12,022 INFO L276 IsEmpty]: Start isEmpty. Operand 2087 states. [2020-10-15 03:33:12,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-15 03:33:12,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:33:12,058 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] [2020-10-15 03:33:12,058 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:33:12,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:33:12,066 INFO L82 PathProgramCache]: Analyzing trace with hash -687871141, now seen corresponding path program 1 times [2020-10-15 03:33:12,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:33:12,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179381957] [2020-10-15 03:33:12,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:33:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:12,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:13,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:13,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:13,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:13,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:14,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:16,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:16,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:16,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:17,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:17,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:17,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-15 03:33:17,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:33:17,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-15 03:33:17,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:17,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:17,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:33:17,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:33:17,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-15 03:33:17,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:33:21,298 WARN L193 SmtUtils]: Spent 3.21 s on a formula simplification that was a NOOP. DAG size: 769 [2020-10-15 03:33:21,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:33:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:21,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:21,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:21,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:33:21,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:33:21,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-15 03:33:21,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:21,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:21,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:33:21,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:33:21,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:33:21,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:33:21,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:33:21,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179381957] [2020-10-15 03:33:21,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:33:21,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:33:21,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341426424] [2020-10-15 03:33:21,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:33:21,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:33:21,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:33:21,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:33:21,581 INFO L87 Difference]: Start difference. First operand 2087 states. Second operand 6 states. [2020-10-15 03:33:24,809 WARN L193 SmtUtils]: Spent 3.02 s on a formula simplification that was a NOOP. DAG size: 778 [2020-10-15 03:33:45,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:33:45,107 INFO L93 Difference]: Finished difference Result 3628 states and 6344 transitions. [2020-10-15 03:33:45,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:33:45,113 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-10-15 03:33:45,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:33:45,150 INFO L225 Difference]: With dead ends: 3628 [2020-10-15 03:33:45,150 INFO L226 Difference]: Without dead ends: 2144 [2020-10-15 03:33:45,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:33:45,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2020-10-15 03:33:45,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 2042. [2020-10-15 03:33:45,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2042 states. [2020-10-15 03:33:45,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2042 states to 2042 states and 2714 transitions. [2020-10-15 03:33:45,322 INFO L78 Accepts]: Start accepts. Automaton has 2042 states and 2714 transitions. Word has length 105 [2020-10-15 03:33:45,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:33:45,323 INFO L479 AbstractCegarLoop]: Abstraction has 2042 states and 2714 transitions. [2020-10-15 03:33:45,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:33:45,323 INFO L276 IsEmpty]: Start isEmpty. Operand 2042 states and 2714 transitions. [2020-10-15 03:33:45,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-15 03:33:45,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:33:45,332 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] [2020-10-15 03:33:45,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:33:45,333 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:33:45,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:33:45,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1213547847, now seen corresponding path program 1 times [2020-10-15 03:33:45,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:33:45,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756031805] [2020-10-15 03:33:45,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:33:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:45,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:45,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:45,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:45,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:46,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:46,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:46,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:48,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:48,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:48,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:50,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:50,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:50,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-15 03:33:50,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:33:50,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:33:50,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:50,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:50,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:33:50,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:33:50,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 03:33:50,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:33:53,699 WARN L193 SmtUtils]: Spent 3.05 s on a formula simplification that was a NOOP. DAG size: 769 [2020-10-15 03:33:53,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:33:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:53,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:53,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:53,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:33:53,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:33:53,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-15 03:33:53,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:53,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:53,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:33:53,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:33:53,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:33:53,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:33:53,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:33:53,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756031805] [2020-10-15 03:33:53,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:33:53,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:33:53,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273043571] [2020-10-15 03:33:53,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:33:53,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:33:53,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:33:53,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:33:53,925 INFO L87 Difference]: Start difference. First operand 2042 states and 2714 transitions. Second operand 6 states. [2020-10-15 03:33:57,064 WARN L193 SmtUtils]: Spent 3.01 s on a formula simplification that was a NOOP. DAG size: 778 [2020-10-15 03:34:10,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:34:10,283 INFO L93 Difference]: Finished difference Result 3949 states and 5316 transitions. [2020-10-15 03:34:10,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:34:10,285 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-10-15 03:34:10,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:34:10,297 INFO L225 Difference]: With dead ends: 3949 [2020-10-15 03:34:10,297 INFO L226 Difference]: Without dead ends: 2362 [2020-10-15 03:34:10,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:34:10,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2020-10-15 03:34:10,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 2262. [2020-10-15 03:34:10,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2262 states. [2020-10-15 03:34:10,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 3008 transitions. [2020-10-15 03:34:10,401 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 3008 transitions. Word has length 106 [2020-10-15 03:34:10,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:34:10,403 INFO L479 AbstractCegarLoop]: Abstraction has 2262 states and 3008 transitions. [2020-10-15 03:34:10,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:34:10,404 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 3008 transitions. [2020-10-15 03:34:10,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-15 03:34:10,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:34:10,411 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] [2020-10-15 03:34:10,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:34:10,412 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:34:10,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:34:10,412 INFO L82 PathProgramCache]: Analyzing trace with hash 945677879, now seen corresponding path program 1 times [2020-10-15 03:34:10,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:34:10,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52706955] [2020-10-15 03:34:10,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:34:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:10,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:10,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:10,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:10,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:11,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:11,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:11,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:12,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:15,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:15,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-15 03:34:15,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:34:15,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 03:34:15,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:15,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:15,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:34:15,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:34:15,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-15 03:34:15,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:34:19,013 WARN L193 SmtUtils]: Spent 3.23 s on a formula simplification that was a NOOP. DAG size: 769 [2020-10-15 03:34:19,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:34:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:19,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:19,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:19,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:34:19,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:34:19,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-15 03:34:19,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:19,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:19,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:34:19,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:34:19,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:34:19,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:34:19,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:34:19,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52706955] [2020-10-15 03:34:19,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:34:19,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:34:19,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568056714] [2020-10-15 03:34:19,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:34:19,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:34:19,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:34:19,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:34:19,193 INFO L87 Difference]: Start difference. First operand 2262 states and 3008 transitions. Second operand 6 states. [2020-10-15 03:34:22,322 WARN L193 SmtUtils]: Spent 3.00 s on a formula simplification that was a NOOP. DAG size: 777 [2020-10-15 03:34:33,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:34:33,928 INFO L93 Difference]: Finished difference Result 5143 states and 7024 transitions. [2020-10-15 03:34:33,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:34:33,929 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2020-10-15 03:34:33,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:34:33,945 INFO L225 Difference]: With dead ends: 5143 [2020-10-15 03:34:33,945 INFO L226 Difference]: Without dead ends: 3160 [2020-10-15 03:34:33,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:34:33,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3160 states. [2020-10-15 03:34:34,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3160 to 3058. [2020-10-15 03:34:34,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3058 states. [2020-10-15 03:34:34,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3058 states to 3058 states and 4223 transitions. [2020-10-15 03:34:34,089 INFO L78 Accepts]: Start accepts. Automaton has 3058 states and 4223 transitions. Word has length 107 [2020-10-15 03:34:34,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:34:34,090 INFO L479 AbstractCegarLoop]: Abstraction has 3058 states and 4223 transitions. [2020-10-15 03:34:34,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:34:34,090 INFO L276 IsEmpty]: Start isEmpty. Operand 3058 states and 4223 transitions. [2020-10-15 03:34:34,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-15 03:34:34,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:34:34,098 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] [2020-10-15 03:34:34,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:34:34,099 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:34:34,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:34:34,099 INFO L82 PathProgramCache]: Analyzing trace with hash -138486301, now seen corresponding path program 1 times [2020-10-15 03:34:34,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:34:34,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963165495] [2020-10-15 03:34:34,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:34:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:34,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:34,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:34,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:34,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:34,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:36,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:36,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:37,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:37,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:38,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:39,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:39,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-15 03:34:39,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:34:39,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:34:39,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:39,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:39,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:34:39,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:34:39,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-15 03:34:39,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:34:42,417 WARN L193 SmtUtils]: Spent 3.05 s on a formula simplification that was a NOOP. DAG size: 769 [2020-10-15 03:34:42,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:34:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:42,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:42,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:42,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:34:42,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:34:42,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 03:34:42,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:42,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:42,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:34:42,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:34:42,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:34:42,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:42,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:34:42,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963165495] [2020-10-15 03:34:42,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:34:42,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:34:42,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929042007] [2020-10-15 03:34:42,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:34:42,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:34:42,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:34:42,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:34:42,523 INFO L87 Difference]: Start difference. First operand 3058 states and 4223 transitions. Second operand 7 states. [2020-10-15 03:34:45,727 WARN L193 SmtUtils]: Spent 3.05 s on a formula simplification that was a NOOP. DAG size: 779 [2020-10-15 03:34:57,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:34:57,822 INFO L93 Difference]: Finished difference Result 5232 states and 7303 transitions. [2020-10-15 03:34:57,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:34:57,822 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-15 03:34:57,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:34:57,838 INFO L225 Difference]: With dead ends: 5232 [2020-10-15 03:34:57,838 INFO L226 Difference]: Without dead ends: 3490 [2020-10-15 03:34:57,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:34:57,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3490 states. [2020-10-15 03:34:57,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3490 to 3058. [2020-10-15 03:34:57,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3058 states. [2020-10-15 03:34:57,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3058 states to 3058 states and 4222 transitions. [2020-10-15 03:34:57,990 INFO L78 Accepts]: Start accepts. Automaton has 3058 states and 4222 transitions. Word has length 108 [2020-10-15 03:34:57,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:34:57,992 INFO L479 AbstractCegarLoop]: Abstraction has 3058 states and 4222 transitions. [2020-10-15 03:34:57,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:34:57,992 INFO L276 IsEmpty]: Start isEmpty. Operand 3058 states and 4222 transitions. [2020-10-15 03:34:57,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-15 03:34:57,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:34:57,998 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] [2020-10-15 03:34:57,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:34:57,999 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:34:57,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:34:57,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1411570112, now seen corresponding path program 1 times [2020-10-15 03:34:58,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:34:58,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916952516] [2020-10-15 03:34:58,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:34:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:58,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:58,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:58,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:58,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:58,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:00,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:00,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:00,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:01,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:01,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:02,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:03,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:03,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-15 03:35:03,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:35:03,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-15 03:35:03,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:03,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:03,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:35:03,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:35:03,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 03:35:03,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:06,048 WARN L193 SmtUtils]: Spent 2.85 s on a formula simplification that was a NOOP. DAG size: 769 [2020-10-15 03:35:06,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:06,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:06,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:06,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:06,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:06,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-15 03:35:06,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:06,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:06,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:35:06,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:06,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:35:06,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:06,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:06,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916952516] [2020-10-15 03:35:06,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:06,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:35:06,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966523010] [2020-10-15 03:35:06,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:35:06,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:06,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:35:06,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:35:06,199 INFO L87 Difference]: Start difference. First operand 3058 states and 4222 transitions. Second operand 6 states. [2020-10-15 03:35:09,244 WARN L193 SmtUtils]: Spent 2.94 s on a formula simplification that was a NOOP. DAG size: 770 [2020-10-15 03:35:25,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:25,145 INFO L93 Difference]: Finished difference Result 9793 states and 14244 transitions. [2020-10-15 03:35:25,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:35:25,152 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2020-10-15 03:35:25,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:25,189 INFO L225 Difference]: With dead ends: 9793 [2020-10-15 03:35:25,189 INFO L226 Difference]: Without dead ends: 8101 [2020-10-15 03:35:25,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:35:25,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8101 states. [2020-10-15 03:35:25,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8101 to 6017. [2020-10-15 03:35:25,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6017 states. [2020-10-15 03:35:25,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6017 states to 6017 states and 8653 transitions. [2020-10-15 03:35:25,520 INFO L78 Accepts]: Start accepts. Automaton has 6017 states and 8653 transitions. Word has length 108 [2020-10-15 03:35:25,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:25,521 INFO L479 AbstractCegarLoop]: Abstraction has 6017 states and 8653 transitions. [2020-10-15 03:35:25,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:35:25,521 INFO L276 IsEmpty]: Start isEmpty. Operand 6017 states and 8653 transitions. [2020-10-15 03:35:25,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-15 03:35:25,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:25,529 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] [2020-10-15 03:35:25,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:35:25,529 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:25,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:25,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1021751135, now seen corresponding path program 1 times [2020-10-15 03:35:25,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:25,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022910697] [2020-10-15 03:35:25,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:25,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:25,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:25,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:26,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:26,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:30,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:30,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-15 03:35:30,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:35:30,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 03:35:30,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:30,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:30,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:35:30,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:35:30,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-15 03:35:30,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:34,036 WARN L193 SmtUtils]: Spent 3.05 s on a formula simplification that was a NOOP. DAG size: 769 [2020-10-15 03:35:34,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:34,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:34,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:34,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:34,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:34,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 03:35:34,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:34,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:34,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:35:34,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:34,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:35:34,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:34,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:34,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022910697] [2020-10-15 03:35:34,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:34,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:35:34,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780726459] [2020-10-15 03:35:34,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:35:34,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:34,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:35:34,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:35:34,147 INFO L87 Difference]: Start difference. First operand 6017 states and 8653 transitions. Second operand 8 states. [2020-10-15 03:35:37,512 WARN L193 SmtUtils]: Spent 3.19 s on a formula simplification that was a NOOP. DAG size: 792 [2020-10-15 03:35:46,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:46,659 INFO L93 Difference]: Finished difference Result 9061 states and 13276 transitions. [2020-10-15 03:35:46,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:35:46,660 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 109 [2020-10-15 03:35:46,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:46,678 INFO L225 Difference]: With dead ends: 9061 [2020-10-15 03:35:46,679 INFO L226 Difference]: Without dead ends: 5397 [2020-10-15 03:35:46,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:35:46,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5397 states. [2020-10-15 03:35:46,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5397 to 4327. [2020-10-15 03:35:46,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4327 states. [2020-10-15 03:35:46,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4327 states to 4327 states and 6203 transitions. [2020-10-15 03:35:46,957 INFO L78 Accepts]: Start accepts. Automaton has 4327 states and 6203 transitions. Word has length 109 [2020-10-15 03:35:46,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:46,958 INFO L479 AbstractCegarLoop]: Abstraction has 4327 states and 6203 transitions. [2020-10-15 03:35:46,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:35:46,958 INFO L276 IsEmpty]: Start isEmpty. Operand 4327 states and 6203 transitions. [2020-10-15 03:35:46,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-15 03:35:46,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:46,963 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] [2020-10-15 03:35:46,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:35:46,964 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:46,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:46,964 INFO L82 PathProgramCache]: Analyzing trace with hash 74453095, now seen corresponding path program 1 times [2020-10-15 03:35:46,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:46,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890247467] [2020-10-15 03:35:46,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:47,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:47,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:47,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:47,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:48,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:48,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:49,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:49,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:49,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:52,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:52,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-15 03:35:52,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:35:52,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:35:52,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:52,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:52,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:35:52,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:35:52,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-15 03:35:52,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:55,170 WARN L193 SmtUtils]: Spent 2.98 s on a formula simplification that was a NOOP. DAG size: 769 [2020-10-15 03:35:55,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:55,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:55,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:55,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:55,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:55,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-15 03:35:55,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:55,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:55,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:35:55,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:55,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:35:55,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:55,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:55,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890247467] [2020-10-15 03:35:55,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:55,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:35:55,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103560310] [2020-10-15 03:35:55,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:35:55,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:55,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:35:55,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:35:55,315 INFO L87 Difference]: Start difference. First operand 4327 states and 6203 transitions. Second operand 6 states. [2020-10-15 03:35:58,486 WARN L193 SmtUtils]: Spent 3.03 s on a formula simplification that was a NOOP. DAG size: 778 [2020-10-15 03:36:06,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:06,179 INFO L93 Difference]: Finished difference Result 11117 states and 16109 transitions. [2020-10-15 03:36:06,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:36:06,180 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2020-10-15 03:36:06,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:06,203 INFO L225 Difference]: With dead ends: 11117 [2020-10-15 03:36:06,204 INFO L226 Difference]: Without dead ends: 7005 [2020-10-15 03:36:06,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:36:06,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7005 states. [2020-10-15 03:36:06,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7005 to 6925. [2020-10-15 03:36:06,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6925 states. [2020-10-15 03:36:06,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6925 states to 6925 states and 10037 transitions. [2020-10-15 03:36:06,585 INFO L78 Accepts]: Start accepts. Automaton has 6925 states and 10037 transitions. Word has length 110 [2020-10-15 03:36:06,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:06,586 INFO L479 AbstractCegarLoop]: Abstraction has 6925 states and 10037 transitions. [2020-10-15 03:36:06,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:36:06,586 INFO L276 IsEmpty]: Start isEmpty. Operand 6925 states and 10037 transitions. [2020-10-15 03:36:06,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-15 03:36:06,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:06,591 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] [2020-10-15 03:36:06,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:36:06,592 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:06,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:06,592 INFO L82 PathProgramCache]: Analyzing trace with hash 736008195, now seen corresponding path program 1 times [2020-10-15 03:36:06,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:06,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217826674] [2020-10-15 03:36:06,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:06,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:06,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:06,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:07,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:07,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:08,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:08,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:09,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:11,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:11,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-15 03:36:11,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:36:11,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:36:11,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:11,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:11,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:36:11,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:36:11,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-15 03:36:11,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:14,788 WARN L193 SmtUtils]: Spent 2.95 s on a formula simplification that was a NOOP. DAG size: 769 [2020-10-15 03:36:14,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:14,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:14,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:14,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:14,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:14,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 03:36:14,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:14,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:14,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:36:14,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:14,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:36:14,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:14,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:36:14,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217826674] [2020-10-15 03:36:14,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:14,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:36:14,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22856211] [2020-10-15 03:36:14,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:36:14,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:14,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:36:14,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:36:14,880 INFO L87 Difference]: Start difference. First operand 6925 states and 10037 transitions. Second operand 8 states. [2020-10-15 03:36:18,109 WARN L193 SmtUtils]: Spent 3.10 s on a formula simplification that was a NOOP. DAG size: 775 [2020-10-15 03:36:27,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:27,401 INFO L93 Difference]: Finished difference Result 26401 states and 39354 transitions. [2020-10-15 03:36:27,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 03:36:27,402 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-10-15 03:36:27,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:27,449 INFO L225 Difference]: With dead ends: 26401 [2020-10-15 03:36:27,450 INFO L226 Difference]: Without dead ends: 21045 [2020-10-15 03:36:27,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:36:27,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21045 states. [2020-10-15 03:36:28,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21045 to 6366. [2020-10-15 03:36:28,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6366 states. [2020-10-15 03:36:28,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6366 states to 6366 states and 9224 transitions. [2020-10-15 03:36:28,037 INFO L78 Accepts]: Start accepts. Automaton has 6366 states and 9224 transitions. Word has length 111 [2020-10-15 03:36:28,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:28,037 INFO L479 AbstractCegarLoop]: Abstraction has 6366 states and 9224 transitions. [2020-10-15 03:36:28,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:36:28,037 INFO L276 IsEmpty]: Start isEmpty. Operand 6366 states and 9224 transitions. [2020-10-15 03:36:28,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-15 03:36:28,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:28,041 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] [2020-10-15 03:36:28,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:36:28,041 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:28,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:28,042 INFO L82 PathProgramCache]: Analyzing trace with hash 983136433, now seen corresponding path program 1 times [2020-10-15 03:36:28,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:28,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74443135] [2020-10-15 03:36:28,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:28,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:28,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:28,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:28,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:29,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:29,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:30,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:30,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:30,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:30,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:31,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:33,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:33,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-15 03:36:33,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:36:33,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:36:33,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:33,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:33,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:36:33,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:36:33,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-15 03:36:33,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:36:36,152 WARN L193 SmtUtils]: Spent 2.90 s on a formula simplification that was a NOOP. DAG size: 769 [2020-10-15 03:36:36,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:36,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:36,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:36,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:36,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:36,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-15 03:36:36,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:36,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:36,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:36:36,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:36,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:36:36,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:36,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:36:36,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74443135] [2020-10-15 03:36:36,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:36,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:36:36,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78856800] [2020-10-15 03:36:36,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:36:36,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:36,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:36:36,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:36:36,303 INFO L87 Difference]: Start difference. First operand 6366 states and 9224 transitions. Second operand 9 states. [2020-10-15 03:36:39,479 WARN L193 SmtUtils]: Spent 3.05 s on a formula simplification that was a NOOP. DAG size: 774