/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:10:37,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:10:37,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:10:38,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:10:38,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:10:38,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:10:38,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:10:38,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:10:38,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:10:38,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:10:38,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:10:38,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:10:38,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:10:38,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:10:38,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:10:38,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:10:38,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:10:38,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:10:38,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:10:38,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:10:38,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:10:38,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:10:38,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:10:38,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:10:38,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:10:38,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:10:38,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:10:38,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:10:38,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:10:38,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:10:38,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:10:38,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:10:38,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:10:38,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:10:38,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:10:38,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:10:38,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:10:38,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:10:38,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:10:38,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:10:38,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:10:38,086 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 14:10:38,122 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:10:38,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:10:38,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:10:38,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:10:38,125 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:10:38,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:10:38,125 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:10:38,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:10:38,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:10:38,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:10:38,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:10:38,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:10:38,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:10:38,128 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:10:38,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:10:38,128 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:10:38,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:10:38,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:10:38,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:10:38,129 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:10:38,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:10:38,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:10:38,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:10:38,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:10:38,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:10:38,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:10:38,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:10:38,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:10:38,131 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:10:38,131 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:10:38,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:10:38,442 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:10:38,446 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:10:38,449 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:10:38,449 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:10:38,450 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-13 14:10:38,519 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe1780f24/2d9466f9dc77430d95798e0ef896b2ac/FLAG5e251e58d [2020-10-13 14:10:39,004 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:10:39,005 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-13 14:10:39,022 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe1780f24/2d9466f9dc77430d95798e0ef896b2ac/FLAG5e251e58d [2020-10-13 14:10:39,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe1780f24/2d9466f9dc77430d95798e0ef896b2ac [2020-10-13 14:10:39,314 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:10:39,316 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:10:39,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:10:39,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:10:39,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:10:39,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:10:39" (1/1) ... [2020-10-13 14:10:39,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5df63da9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:10:39, skipping insertion in model container [2020-10-13 14:10:39,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:10:39" (1/1) ... [2020-10-13 14:10:39,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:10:39,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:10:39,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:10:39,964 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:10:40,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:10:40,111 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:10:40,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:10:40 WrapperNode [2020-10-13 14:10:40,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:10:40,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:10:40,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:10:40,112 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:10:40,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:10:40" (1/1) ... [2020-10-13 14:10:40,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:10:40" (1/1) ... [2020-10-13 14:10:40,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:10:40" (1/1) ... [2020-10-13 14:10:40,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:10:40" (1/1) ... [2020-10-13 14:10:40,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:10:40" (1/1) ... [2020-10-13 14:10:40,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:10:40" (1/1) ... [2020-10-13 14:10:40,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:10:40" (1/1) ... [2020-10-13 14:10:40,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:10:40,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:10:40,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:10:40,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:10:40,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:10:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:10:40,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:10:40,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:10:40,282 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:10:40,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:10:40,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:10:40,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:10:40,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:10:40,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 14:10:40,285 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:10:40,286 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:10:40,286 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:10:40,286 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:10:40,286 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:10:40,286 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:10:40,287 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:10:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:10:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:10:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:10:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:10:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:10:40,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:10:41,709 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:10:41,709 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:10:41,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:10:41 BoogieIcfgContainer [2020-10-13 14:10:41,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:10:41,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:10:41,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:10:41,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:10:41,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:10:39" (1/3) ... [2020-10-13 14:10:41,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25881299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:10:41, skipping insertion in model container [2020-10-13 14:10:41,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:10:40" (2/3) ... [2020-10-13 14:10:41,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25881299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:10:41, skipping insertion in model container [2020-10-13 14:10:41,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:10:41" (3/3) ... [2020-10-13 14:10:41,730 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-13 14:10:41,739 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:10:41,747 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-13 14:10:41,760 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-13 14:10:41,787 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:10:41,787 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:10:41,787 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:10:41,787 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:10:41,788 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:10:41,788 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:10:41,788 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:10:41,788 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:10:41,815 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states. [2020-10-13 14:10:41,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 14:10:41,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:10:41,829 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] [2020-10-13 14:10:41,830 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:10:41,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:10:41,836 INFO L82 PathProgramCache]: Analyzing trace with hash -961922544, now seen corresponding path program 1 times [2020-10-13 14:10:41,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:10:41,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369741001] [2020-10-13 14:10:41,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:10:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:42,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:42,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:43,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:43,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:43,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:44,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:44,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:44,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:45,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:45,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:45,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:46,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:46,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:46,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:46,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:47,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:47,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 14:10:47,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:10:47,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 14:10:47,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:47,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:10:47,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:10:47,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 14:10:47,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:10:47,398 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:10:47,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:10:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:47,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:47,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:47,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:10:47,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:10:47,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:10:47,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:47,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:10:47,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:10:47,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:10:47,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 14:10:47,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:10:47,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369741001] [2020-10-13 14:10:47,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:10:47,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:10:47,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901737161] [2020-10-13 14:10:47,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:10:47,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:10:47,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:10:47,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:10:47,478 INFO L87 Difference]: Start difference. First operand 271 states. Second operand 6 states. [2020-10-13 14:10:47,722 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 14:10:49,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:10:49,351 INFO L93 Difference]: Finished difference Result 581 states and 953 transitions. [2020-10-13 14:10:49,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 14:10:49,354 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-10-13 14:10:49,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:10:49,372 INFO L225 Difference]: With dead ends: 581 [2020-10-13 14:10:49,372 INFO L226 Difference]: Without dead ends: 506 [2020-10-13 14:10:49,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:10:49,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-10-13 14:10:49,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 440. [2020-10-13 14:10:49,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2020-10-13 14:10:49,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 586 transitions. [2020-10-13 14:10:49,456 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 586 transitions. Word has length 51 [2020-10-13 14:10:49,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:10:49,457 INFO L479 AbstractCegarLoop]: Abstraction has 440 states and 586 transitions. [2020-10-13 14:10:49,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:10:49,457 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 586 transitions. [2020-10-13 14:10:49,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 14:10:49,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:10:49,461 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] [2020-10-13 14:10:49,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:10:49,462 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:10:49,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:10:49,462 INFO L82 PathProgramCache]: Analyzing trace with hash -2052042303, now seen corresponding path program 1 times [2020-10-13 14:10:49,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:10:49,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991151867] [2020-10-13 14:10:49,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:10:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:49,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:49,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:49,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:49,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:50,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:50,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:50,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:50,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:51,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:54,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:54,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 14:10:54,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:10:54,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:10:54,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:54,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:10:54,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:10:54,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 14:10:54,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 14:10:54,788 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:10:54,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:10:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:54,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:54,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:10:54,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:10:54,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:10:54,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 14:10:54,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:10:54,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:10:54,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:10:54,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:10:54,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:10:54,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:10:54,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991151867] [2020-10-13 14:10:54,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:10:54,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:10:54,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819244403] [2020-10-13 14:10:54,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:10:54,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:10:54,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:10:54,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:10:54,840 INFO L87 Difference]: Start difference. First operand 440 states and 586 transitions. Second operand 7 states. [2020-10-13 14:10:55,095 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 14:10:56,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:10:56,440 INFO L93 Difference]: Finished difference Result 1393 states and 2014 transitions. [2020-10-13 14:10:56,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:10:56,441 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-10-13 14:10:56,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:10:56,448 INFO L225 Difference]: With dead ends: 1393 [2020-10-13 14:10:56,448 INFO L226 Difference]: Without dead ends: 1223 [2020-10-13 14:10:56,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:10:56,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2020-10-13 14:10:56,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 539. [2020-10-13 14:10:56,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-10-13 14:10:56,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 749 transitions. [2020-10-13 14:10:56,516 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 749 transitions. Word has length 51 [2020-10-13 14:10:56,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:10:56,517 INFO L479 AbstractCegarLoop]: Abstraction has 539 states and 749 transitions. [2020-10-13 14:10:56,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:10:56,517 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 749 transitions. [2020-10-13 14:10:56,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 14:10:56,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:10:56,525 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] [2020-10-13 14:10:56,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:10:56,526 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:10:56,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:10:56,526 INFO L82 PathProgramCache]: Analyzing trace with hash -317393183, now seen corresponding path program 1 times [2020-10-13 14:10:56,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:10:56,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279824889] [2020-10-13 14:10:56,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:10:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:10:56,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:56,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:56,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:56,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:57,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:57,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:57,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:58,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:58,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:58,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:58,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:58,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:10:59,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:00,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:00,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:00,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:00,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:01,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:01,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 14:11:01,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:11:01,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:11:01,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:01,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:11:01,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:11:01,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 14:11:01,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:01,816 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:11:01,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:01,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:01,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:01,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:01,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:01,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:11:01,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:01,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:11:01,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:01,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:11:01,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:01,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:11:01,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279824889] [2020-10-13 14:11:01,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:01,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:11:01,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179796333] [2020-10-13 14:11:01,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:11:01,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:01,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:11:01,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:11:01,865 INFO L87 Difference]: Start difference. First operand 539 states and 749 transitions. Second operand 6 states. [2020-10-13 14:11:02,040 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-13 14:11:02,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:02,711 INFO L93 Difference]: Finished difference Result 1014 states and 1456 transitions. [2020-10-13 14:11:02,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:11:02,711 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-10-13 14:11:02,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:02,715 INFO L225 Difference]: With dead ends: 1014 [2020-10-13 14:11:02,715 INFO L226 Difference]: Without dead ends: 696 [2020-10-13 14:11:02,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:11:02,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-13 14:11:02,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 638. [2020-10-13 14:11:02,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 638 states. [2020-10-13 14:11:02,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 905 transitions. [2020-10-13 14:11:02,751 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 905 transitions. Word has length 51 [2020-10-13 14:11:02,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:02,751 INFO L479 AbstractCegarLoop]: Abstraction has 638 states and 905 transitions. [2020-10-13 14:11:02,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:11:02,752 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 905 transitions. [2020-10-13 14:11:02,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 14:11:02,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:02,753 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] [2020-10-13 14:11:02,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:11:02,754 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:02,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:02,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1432248778, now seen corresponding path program 1 times [2020-10-13 14:11:02,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:02,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152944488] [2020-10-13 14:11:02,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:02,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:02,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:02,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:02,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:02,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:03,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:04,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:04,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:04,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:07,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:07,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 14:11:07,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:11:07,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:11:07,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:07,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:11:07,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:11:07,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 14:11:07,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:07,948 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:11:07,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:07,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:07,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:07,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:07,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:07,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:11:07,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:07,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:11:07,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:07,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:11:07,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:07,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:11:07,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152944488] [2020-10-13 14:11:07,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:07,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:11:07,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156874008] [2020-10-13 14:11:07,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:11:07,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:07,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:11:07,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:11:07,975 INFO L87 Difference]: Start difference. First operand 638 states and 905 transitions. Second operand 7 states. [2020-10-13 14:11:08,128 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 14:11:09,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:09,318 INFO L93 Difference]: Finished difference Result 2134 states and 3168 transitions. [2020-10-13 14:11:09,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:11:09,318 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-10-13 14:11:09,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:09,329 INFO L225 Difference]: With dead ends: 2134 [2020-10-13 14:11:09,329 INFO L226 Difference]: Without dead ends: 1855 [2020-10-13 14:11:09,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:11:09,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1855 states. [2020-10-13 14:11:09,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1855 to 779. [2020-10-13 14:11:09,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 779 states. [2020-10-13 14:11:09,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1131 transitions. [2020-10-13 14:11:09,400 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1131 transitions. Word has length 51 [2020-10-13 14:11:09,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:09,401 INFO L479 AbstractCegarLoop]: Abstraction has 779 states and 1131 transitions. [2020-10-13 14:11:09,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:11:09,401 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1131 transitions. [2020-10-13 14:11:09,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 14:11:09,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:09,402 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] [2020-10-13 14:11:09,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:11:09,403 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:09,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:09,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1881396970, now seen corresponding path program 1 times [2020-10-13 14:11:09,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:09,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7412591] [2020-10-13 14:11:09,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:09,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:09,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:09,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:09,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:09,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:09,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:10,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:10,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:10,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:11,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:11,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:11,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:11,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:11,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:12,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:12,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:12,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:13,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:13,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:14,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:14,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 14:11:14,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 14:11:14,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:11:14,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:14,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:11:14,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:11:14,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 14:11:14,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:14,628 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:11:14,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:14,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:14,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:14,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:14,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:14,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:11:14,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:14,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:11:14,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:14,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:11:14,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:14,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:11:14,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7412591] [2020-10-13 14:11:14,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:14,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:11:14,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693138596] [2020-10-13 14:11:14,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:11:14,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:14,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:11:14,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:11:14,663 INFO L87 Difference]: Start difference. First operand 779 states and 1131 transitions. Second operand 6 states. [2020-10-13 14:11:14,813 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-13 14:11:15,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:15,434 INFO L93 Difference]: Finished difference Result 1673 states and 2482 transitions. [2020-10-13 14:11:15,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:11:15,434 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-10-13 14:11:15,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:15,443 INFO L225 Difference]: With dead ends: 1673 [2020-10-13 14:11:15,443 INFO L226 Difference]: Without dead ends: 1139 [2020-10-13 14:11:15,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:11:15,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2020-10-13 14:11:15,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1036. [2020-10-13 14:11:15,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-10-13 14:11:15,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1515 transitions. [2020-10-13 14:11:15,511 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1515 transitions. Word has length 51 [2020-10-13 14:11:15,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:15,511 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1515 transitions. [2020-10-13 14:11:15,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:11:15,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1515 transitions. [2020-10-13 14:11:15,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 14:11:15,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:15,513 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] [2020-10-13 14:11:15,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:11:15,513 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:15,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:15,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1747500859, now seen corresponding path program 1 times [2020-10-13 14:11:15,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:15,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12577507] [2020-10-13 14:11:15,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:15,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:15,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:15,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:15,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:15,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:15,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:16,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:16,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:16,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:17,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:20,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:20,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 14:11:20,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:11:20,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 14:11:20,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:20,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:11:20,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:11:20,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 14:11:20,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:20,689 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:11:20,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:20,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:20,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:20,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:20,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:20,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:11:20,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:20,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:11:20,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:20,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:11:20,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:11:20,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:11:20,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12577507] [2020-10-13 14:11:20,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:20,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:11:20,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999231389] [2020-10-13 14:11:20,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:11:20,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:20,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:11:20,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:11:20,723 INFO L87 Difference]: Start difference. First operand 1036 states and 1515 transitions. Second operand 6 states. [2020-10-13 14:11:20,881 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 14:11:22,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:22,080 INFO L93 Difference]: Finished difference Result 2230 states and 3308 transitions. [2020-10-13 14:11:22,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 14:11:22,081 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-13 14:11:22,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:22,094 INFO L225 Difference]: With dead ends: 2230 [2020-10-13 14:11:22,094 INFO L226 Difference]: Without dead ends: 2224 [2020-10-13 14:11:22,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:11:22,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2224 states. [2020-10-13 14:11:22,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2224 to 1036. [2020-10-13 14:11:22,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-10-13 14:11:22,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1513 transitions. [2020-10-13 14:11:22,176 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1513 transitions. Word has length 52 [2020-10-13 14:11:22,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:22,176 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1513 transitions. [2020-10-13 14:11:22,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:11:22,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1513 transitions. [2020-10-13 14:11:22,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 14:11:22,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:22,178 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] [2020-10-13 14:11:22,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:11:22,178 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:22,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:22,178 INFO L82 PathProgramCache]: Analyzing trace with hash 449644141, now seen corresponding path program 1 times [2020-10-13 14:11:22,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:22,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509992597] [2020-10-13 14:11:22,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:22,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:22,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:22,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:22,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:22,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:22,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:22,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:22,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:22,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:22,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:23,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:23,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:24,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:24,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:27,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:27,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 14:11:27,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:11:27,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:11:27,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:27,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:11:27,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:11:27,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 14:11:27,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:27,342 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:11:27,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:27,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:27,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:27,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:27,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:27,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:11:27,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:27,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:11:27,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:27,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:11:27,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:27,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:11:27,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509992597] [2020-10-13 14:11:27,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:27,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:11:27,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105839533] [2020-10-13 14:11:27,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:11:27,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:27,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:11:27,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:11:27,369 INFO L87 Difference]: Start difference. First operand 1036 states and 1513 transitions. Second operand 6 states. [2020-10-13 14:11:27,543 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-13 14:11:28,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:28,075 INFO L93 Difference]: Finished difference Result 1354 states and 2005 transitions. [2020-10-13 14:11:28,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:11:28,075 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-13 14:11:28,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:28,078 INFO L225 Difference]: With dead ends: 1354 [2020-10-13 14:11:28,078 INFO L226 Difference]: Without dead ends: 507 [2020-10-13 14:11:28,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:11:28,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-10-13 14:11:28,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 331. [2020-10-13 14:11:28,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-10-13 14:11:28,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 450 transitions. [2020-10-13 14:11:28,107 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 450 transitions. Word has length 52 [2020-10-13 14:11:28,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:28,107 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 450 transitions. [2020-10-13 14:11:28,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:11:28,107 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 450 transitions. [2020-10-13 14:11:28,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 14:11:28,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:28,108 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] [2020-10-13 14:11:28,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:11:28,109 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:28,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:28,109 INFO L82 PathProgramCache]: Analyzing trace with hash 67692272, now seen corresponding path program 1 times [2020-10-13 14:11:28,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:28,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149413326] [2020-10-13 14:11:28,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:28,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:28,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:28,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:28,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:28,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:28,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:28,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:28,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:29,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:29,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:29,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:29,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:29,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:29,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:29,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:29,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:29,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:30,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:30,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:30,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:31,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:31,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:31,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:33,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:33,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 14:11:33,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-13 14:11:33,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:11:33,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:33,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:11:33,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:11:33,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 14:11:33,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:33,420 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:11:33,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:33,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:33,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:33,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:33,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:33,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:11:33,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:33,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:11:33,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:33,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:11:33,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:33,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:11:33,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149413326] [2020-10-13 14:11:33,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:33,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:11:33,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784457730] [2020-10-13 14:11:33,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:11:33,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:33,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:11:33,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:11:33,446 INFO L87 Difference]: Start difference. First operand 331 states and 450 transitions. Second operand 11 states. [2020-10-13 14:11:33,886 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 152 [2020-10-13 14:11:35,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:35,853 INFO L93 Difference]: Finished difference Result 1464 states and 2112 transitions. [2020-10-13 14:11:35,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 14:11:35,853 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-10-13 14:11:35,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:35,860 INFO L225 Difference]: With dead ends: 1464 [2020-10-13 14:11:35,860 INFO L226 Difference]: Without dead ends: 1459 [2020-10-13 14:11:35,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=232, Invalid=958, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 14:11:35,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2020-10-13 14:11:35,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 331. [2020-10-13 14:11:35,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-10-13 14:11:35,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 449 transitions. [2020-10-13 14:11:35,905 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 449 transitions. Word has length 52 [2020-10-13 14:11:35,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:35,905 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 449 transitions. [2020-10-13 14:11:35,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:11:35,905 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 449 transitions. [2020-10-13 14:11:35,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 14:11:35,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:35,906 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] [2020-10-13 14:11:35,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:11:35,907 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:35,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:35,907 INFO L82 PathProgramCache]: Analyzing trace with hash -377020472, now seen corresponding path program 1 times [2020-10-13 14:11:35,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:35,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070599846] [2020-10-13 14:11:35,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:35,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:35,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:35,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:36,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:36,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:36,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:36,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:36,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:36,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:37,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:37,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:38,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:38,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:38,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:38,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:38,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:39,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:39,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:39,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:40,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:40,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:40,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:40,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 14:11:40,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-13 14:11:40,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:11:40,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:40,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:11:40,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:11:40,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 14:11:40,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:41,152 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:11:41,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:41,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:41,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:41,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:41,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:41,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:11:41,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:41,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:11:41,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:41,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:11:41,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:41,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:11:41,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070599846] [2020-10-13 14:11:41,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:41,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:11:41,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523178427] [2020-10-13 14:11:41,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:11:41,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:41,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:11:41,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:11:41,176 INFO L87 Difference]: Start difference. First operand 331 states and 449 transitions. Second operand 10 states. [2020-10-13 14:11:41,371 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 14:11:42,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:42,609 INFO L93 Difference]: Finished difference Result 1004 states and 1440 transitions. [2020-10-13 14:11:42,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 14:11:42,610 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-10-13 14:11:42,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:42,614 INFO L225 Difference]: With dead ends: 1004 [2020-10-13 14:11:42,614 INFO L226 Difference]: Without dead ends: 825 [2020-10-13 14:11:42,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2020-10-13 14:11:42,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2020-10-13 14:11:42,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 331. [2020-10-13 14:11:42,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-10-13 14:11:42,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 448 transitions. [2020-10-13 14:11:42,652 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 448 transitions. Word has length 52 [2020-10-13 14:11:42,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:42,653 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 448 transitions. [2020-10-13 14:11:42,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:11:42,653 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 448 transitions. [2020-10-13 14:11:42,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 14:11:42,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:42,654 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] [2020-10-13 14:11:42,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:11:42,654 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:42,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:42,655 INFO L82 PathProgramCache]: Analyzing trace with hash 505447072, now seen corresponding path program 1 times [2020-10-13 14:11:42,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:42,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747930793] [2020-10-13 14:11:42,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:42,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:42,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:42,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:43,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:43,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:43,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:43,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:43,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:43,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:44,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:44,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:44,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:44,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:44,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:44,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:44,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:45,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:45,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:45,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:45,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:47,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:47,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 14:11:47,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-13 14:11:47,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 14:11:47,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:47,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:11:47,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:11:47,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 14:11:47,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:47,912 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:11:47,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:47,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:47,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:47,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:47,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:47,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:11:47,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:47,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:11:47,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:47,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:11:47,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:47,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:11:47,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747930793] [2020-10-13 14:11:47,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:47,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:11:47,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612715802] [2020-10-13 14:11:47,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:11:47,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:47,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:11:47,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:11:47,933 INFO L87 Difference]: Start difference. First operand 331 states and 448 transitions. Second operand 10 states. [2020-10-13 14:11:48,312 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 153 [2020-10-13 14:11:49,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:49,099 INFO L93 Difference]: Finished difference Result 617 states and 842 transitions. [2020-10-13 14:11:49,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:11:49,099 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-10-13 14:11:49,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:49,104 INFO L225 Difference]: With dead ends: 617 [2020-10-13 14:11:49,104 INFO L226 Difference]: Without dead ends: 613 [2020-10-13 14:11:49,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-10-13 14:11:49,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2020-10-13 14:11:49,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 340. [2020-10-13 14:11:49,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-10-13 14:11:49,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 462 transitions. [2020-10-13 14:11:49,155 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 462 transitions. Word has length 52 [2020-10-13 14:11:49,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:49,156 INFO L479 AbstractCegarLoop]: Abstraction has 340 states and 462 transitions. [2020-10-13 14:11:49,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:11:49,156 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 462 transitions. [2020-10-13 14:11:49,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 14:11:49,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:49,157 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] [2020-10-13 14:11:49,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:11:49,157 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:49,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:49,158 INFO L82 PathProgramCache]: Analyzing trace with hash 791284277, now seen corresponding path program 1 times [2020-10-13 14:11:49,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:49,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942466256] [2020-10-13 14:11:49,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:49,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:49,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:49,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:49,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:49,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:49,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:49,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:50,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:50,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:50,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:50,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:50,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:52,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:53,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:54,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:54,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 14:11:54,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:11:54,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:11:54,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:54,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:11:54,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:11:54,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 14:11:54,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:54,399 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:11:54,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:11:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:54,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:54,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:11:54,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:11:54,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:11:54,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:11:54,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:11:54,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:11:54,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:11:54,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:11:54,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:11:54,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:11:54,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942466256] [2020-10-13 14:11:54,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:11:54,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:11:54,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425710477] [2020-10-13 14:11:54,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:11:54,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:11:54,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:11:54,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:11:54,417 INFO L87 Difference]: Start difference. First operand 340 states and 462 transitions. Second operand 10 states. [2020-10-13 14:11:54,592 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-13 14:11:56,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:11:56,233 INFO L93 Difference]: Finished difference Result 1378 states and 1989 transitions. [2020-10-13 14:11:56,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 14:11:56,234 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2020-10-13 14:11:56,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:11:56,240 INFO L225 Difference]: With dead ends: 1378 [2020-10-13 14:11:56,240 INFO L226 Difference]: Without dead ends: 1372 [2020-10-13 14:11:56,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=196, Invalid=796, Unknown=0, NotChecked=0, Total=992 [2020-10-13 14:11:56,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2020-10-13 14:11:56,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 352. [2020-10-13 14:11:56,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-10-13 14:11:56,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 478 transitions. [2020-10-13 14:11:56,289 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 478 transitions. Word has length 53 [2020-10-13 14:11:56,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:11:56,289 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 478 transitions. [2020-10-13 14:11:56,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:11:56,290 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 478 transitions. [2020-10-13 14:11:56,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 14:11:56,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:11:56,291 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] [2020-10-13 14:11:56,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:11:56,291 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:11:56,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:11:56,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1306538019, now seen corresponding path program 1 times [2020-10-13 14:11:56,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:11:56,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46714322] [2020-10-13 14:11:56,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:11:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:11:56,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:56,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:56,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:56,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:56,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:56,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:56,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:57,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:57,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:58,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:58,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:58,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:58,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:11:59,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:01,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:01,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 14:12:01,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:12:01,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:12:01,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:01,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:12:01,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:12:01,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 14:12:01,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:01,574 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:01,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:01,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:01,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:01,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:01,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:01,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:12:01,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:01,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:01,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:01,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:01,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:01,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:01,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46714322] [2020-10-13 14:12:01,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:01,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:12:01,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306283637] [2020-10-13 14:12:01,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:12:01,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:01,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:12:01,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:12:01,593 INFO L87 Difference]: Start difference. First operand 352 states and 478 transitions. Second operand 11 states. [2020-10-13 14:12:01,812 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 14:12:02,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:02,803 INFO L93 Difference]: Finished difference Result 528 states and 723 transitions. [2020-10-13 14:12:02,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 14:12:02,804 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2020-10-13 14:12:02,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:02,806 INFO L225 Difference]: With dead ends: 528 [2020-10-13 14:12:02,807 INFO L226 Difference]: Without dead ends: 521 [2020-10-13 14:12:02,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2020-10-13 14:12:02,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2020-10-13 14:12:02,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 352. [2020-10-13 14:12:02,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-10-13 14:12:02,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 476 transitions. [2020-10-13 14:12:02,850 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 476 transitions. Word has length 53 [2020-10-13 14:12:02,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:02,850 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 476 transitions. [2020-10-13 14:12:02,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:12:02,851 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 476 transitions. [2020-10-13 14:12:02,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 14:12:02,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:02,852 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] [2020-10-13 14:12:02,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:12:02,852 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:02,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:02,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1135182917, now seen corresponding path program 1 times [2020-10-13 14:12:02,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:02,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67015459] [2020-10-13 14:12:02,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:02,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:02,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:03,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:03,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:03,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:03,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:03,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:03,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:04,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:04,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 14:12:04,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:12:04,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2009 [2020-10-13 14:12:04,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:04,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:12:04,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:12:04,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 14:12:04,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:05,118 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:05,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:05,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:05,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:05,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:05,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:05,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:12:05,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:05,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:05,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:05,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:05,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:05,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:05,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67015459] [2020-10-13 14:12:05,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:05,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:12:05,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638426910] [2020-10-13 14:12:05,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:12:05,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:05,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:12:05,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:12:05,137 INFO L87 Difference]: Start difference. First operand 352 states and 476 transitions. Second operand 11 states. [2020-10-13 14:12:05,292 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 14:12:06,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:06,377 INFO L93 Difference]: Finished difference Result 717 states and 997 transitions. [2020-10-13 14:12:06,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:12:06,377 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2020-10-13 14:12:06,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:06,380 INFO L225 Difference]: With dead ends: 717 [2020-10-13 14:12:06,380 INFO L226 Difference]: Without dead ends: 713 [2020-10-13 14:12:06,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-13 14:12:06,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-10-13 14:12:06,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 344. [2020-10-13 14:12:06,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-10-13 14:12:06,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 467 transitions. [2020-10-13 14:12:06,430 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 467 transitions. Word has length 54 [2020-10-13 14:12:06,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:06,430 INFO L479 AbstractCegarLoop]: Abstraction has 344 states and 467 transitions. [2020-10-13 14:12:06,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:12:06,430 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 467 transitions. [2020-10-13 14:12:06,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 14:12:06,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:06,431 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] [2020-10-13 14:12:06,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:12:06,431 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:06,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:06,432 INFO L82 PathProgramCache]: Analyzing trace with hash -649279837, now seen corresponding path program 1 times [2020-10-13 14:12:06,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:06,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256646090] [2020-10-13 14:12:06,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:06,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:06,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:06,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:06,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:06,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:07,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:07,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:07,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:08,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:08,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 14:12:08,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:12:08,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1627 [2020-10-13 14:12:08,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:08,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:12:08,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:12:08,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 14:12:08,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:08,285 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:08,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:08,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:08,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:08,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:08,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:08,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:12:08,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:08,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:08,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:08,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:08,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:08,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:08,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256646090] [2020-10-13 14:12:08,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:08,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:12:08,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912046691] [2020-10-13 14:12:08,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:12:08,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:08,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:12:08,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:12:08,307 INFO L87 Difference]: Start difference. First operand 344 states and 467 transitions. Second operand 10 states. [2020-10-13 14:12:08,453 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 14:12:09,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:09,227 INFO L93 Difference]: Finished difference Result 762 states and 1076 transitions. [2020-10-13 14:12:09,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:12:09,228 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-10-13 14:12:09,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:09,230 INFO L225 Difference]: With dead ends: 762 [2020-10-13 14:12:09,230 INFO L226 Difference]: Without dead ends: 594 [2020-10-13 14:12:09,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-13 14:12:09,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2020-10-13 14:12:09,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 332. [2020-10-13 14:12:09,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-10-13 14:12:09,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 450 transitions. [2020-10-13 14:12:09,268 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 450 transitions. Word has length 54 [2020-10-13 14:12:09,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:09,268 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 450 transitions. [2020-10-13 14:12:09,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:12:09,269 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 450 transitions. [2020-10-13 14:12:09,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 14:12:09,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:09,270 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] [2020-10-13 14:12:09,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:12:09,270 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:09,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:09,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1574640523, now seen corresponding path program 1 times [2020-10-13 14:12:09,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:09,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78746818] [2020-10-13 14:12:09,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:09,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:09,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:09,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:09,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:09,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:09,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:09,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:10,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:10,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:10,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 14:12:10,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:12:10,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1637 [2020-10-13 14:12:10,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:10,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:12:10,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 14:12:10,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 14:12:10,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:11,167 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:11,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:11,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:11,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:11,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:11,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:11,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 14:12:11,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:11,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:11,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:11,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:11,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:11,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:11,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78746818] [2020-10-13 14:12:11,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:11,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:12:11,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904694139] [2020-10-13 14:12:11,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:12:11,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:11,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:12:11,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:12:11,186 INFO L87 Difference]: Start difference. First operand 332 states and 450 transitions. Second operand 11 states. [2020-10-13 14:12:11,348 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 14:12:12,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:12,103 INFO L93 Difference]: Finished difference Result 750 states and 1059 transitions. [2020-10-13 14:12:12,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 14:12:12,104 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2020-10-13 14:12:12,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:12,107 INFO L225 Difference]: With dead ends: 750 [2020-10-13 14:12:12,107 INFO L226 Difference]: Without dead ends: 581 [2020-10-13 14:12:12,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-13 14:12:12,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-10-13 14:12:12,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 331. [2020-10-13 14:12:12,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-10-13 14:12:12,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 447 transitions. [2020-10-13 14:12:12,153 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 447 transitions. Word has length 54 [2020-10-13 14:12:12,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:12,153 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 447 transitions. [2020-10-13 14:12:12,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:12:12,153 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 447 transitions. [2020-10-13 14:12:12,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 14:12:12,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:12,154 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] [2020-10-13 14:12:12,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 14:12:12,154 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:12,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:12,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1471362170, now seen corresponding path program 1 times [2020-10-13 14:12:12,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:12,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294503429] [2020-10-13 14:12:12,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:12,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:12,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:12,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:12,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:12,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:13,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:13,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 14:12:13,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:12:13,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 921 [2020-10-13 14:12:13,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:13,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:12:13,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:12:13,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 14:12:13,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:13,312 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:13,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:13,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:13,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:13,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:13,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:13,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:12:13,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:13,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:13,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:13,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:13,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:13,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:13,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294503429] [2020-10-13 14:12:13,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:13,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:12:13,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165556502] [2020-10-13 14:12:13,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:12:13,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:13,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:12:13,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:12:13,332 INFO L87 Difference]: Start difference. First operand 331 states and 447 transitions. Second operand 11 states. [2020-10-13 14:12:13,517 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:12:14,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:14,801 INFO L93 Difference]: Finished difference Result 888 states and 1269 transitions. [2020-10-13 14:12:14,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 14:12:14,802 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 55 [2020-10-13 14:12:14,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:14,805 INFO L225 Difference]: With dead ends: 888 [2020-10-13 14:12:14,805 INFO L226 Difference]: Without dead ends: 708 [2020-10-13 14:12:14,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2020-10-13 14:12:14,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-10-13 14:12:14,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 331. [2020-10-13 14:12:14,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-10-13 14:12:14,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 446 transitions. [2020-10-13 14:12:14,863 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 446 transitions. Word has length 55 [2020-10-13 14:12:14,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:14,864 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 446 transitions. [2020-10-13 14:12:14,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:12:14,864 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 446 transitions. [2020-10-13 14:12:14,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 14:12:14,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:14,865 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] [2020-10-13 14:12:14,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 14:12:14,866 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:14,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:14,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1027493084, now seen corresponding path program 1 times [2020-10-13 14:12:14,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:14,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502657757] [2020-10-13 14:12:14,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:14,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:14,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:15,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:15,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:15,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:16,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:16,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 14:12:16,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:12:16,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1363 [2020-10-13 14:12:16,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 14:12:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:12:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 14:12:16,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:16,451 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:16,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:16,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:16,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:16,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:16,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:16,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:12:16,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:16,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:16,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:16,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:16,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:16,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:16,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502657757] [2020-10-13 14:12:16,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:16,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 14:12:16,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514554991] [2020-10-13 14:12:16,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 14:12:16,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:16,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 14:12:16,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:12:16,473 INFO L87 Difference]: Start difference. First operand 331 states and 446 transitions. Second operand 8 states. [2020-10-13 14:12:16,632 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-13 14:12:17,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:17,179 INFO L93 Difference]: Finished difference Result 529 states and 730 transitions. [2020-10-13 14:12:17,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:12:17,179 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2020-10-13 14:12:17,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:17,181 INFO L225 Difference]: With dead ends: 529 [2020-10-13 14:12:17,181 INFO L226 Difference]: Without dead ends: 501 [2020-10-13 14:12:17,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-13 14:12:17,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2020-10-13 14:12:17,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 303. [2020-10-13 14:12:17,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-10-13 14:12:17,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 415 transitions. [2020-10-13 14:12:17,217 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 415 transitions. Word has length 55 [2020-10-13 14:12:17,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:17,217 INFO L479 AbstractCegarLoop]: Abstraction has 303 states and 415 transitions. [2020-10-13 14:12:17,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 14:12:17,217 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 415 transitions. [2020-10-13 14:12:17,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 14:12:17,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:17,217 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] [2020-10-13 14:12:17,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 14:12:17,218 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:17,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:17,218 INFO L82 PathProgramCache]: Analyzing trace with hash 140367608, now seen corresponding path program 1 times [2020-10-13 14:12:17,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:17,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769663624] [2020-10-13 14:12:17,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:17,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:17,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:17,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:17,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:17,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:18,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:18,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 14:12:18,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:12:18,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1231 [2020-10-13 14:12:18,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:18,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:12:18,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 14:12:18,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 14:12:18,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:18,710 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:18,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:18,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:18,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:18,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:18,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:18,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:12:18,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:18,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:18,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:18,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:18,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:18,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:18,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769663624] [2020-10-13 14:12:18,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:18,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:12:18,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163939708] [2020-10-13 14:12:18,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:12:18,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:18,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:12:18,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:12:18,732 INFO L87 Difference]: Start difference. First operand 303 states and 415 transitions. Second operand 11 states. [2020-10-13 14:12:18,931 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 14:12:19,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:19,574 INFO L93 Difference]: Finished difference Result 569 states and 786 transitions. [2020-10-13 14:12:19,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:12:19,574 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 55 [2020-10-13 14:12:19,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:19,577 INFO L225 Difference]: With dead ends: 569 [2020-10-13 14:12:19,577 INFO L226 Difference]: Without dead ends: 561 [2020-10-13 14:12:19,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-13 14:12:19,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2020-10-13 14:12:19,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 306. [2020-10-13 14:12:19,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-10-13 14:12:19,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 418 transitions. [2020-10-13 14:12:19,622 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 418 transitions. Word has length 55 [2020-10-13 14:12:19,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:19,623 INFO L479 AbstractCegarLoop]: Abstraction has 306 states and 418 transitions. [2020-10-13 14:12:19,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:12:19,623 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 418 transitions. [2020-10-13 14:12:19,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 14:12:19,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:19,624 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] [2020-10-13 14:12:19,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 14:12:19,624 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:19,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:19,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1536418230, now seen corresponding path program 1 times [2020-10-13 14:12:19,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:19,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146279141] [2020-10-13 14:12:19,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:19,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:19,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:19,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:19,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:19,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:20,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:20,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:20,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 14:12:20,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:12:20,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 900 [2020-10-13 14:12:20,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:20,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 14:12:20,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:12:20,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 14:12:20,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:20,707 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:20,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:20,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:20,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:20,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:20,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:20,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:12:20,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:20,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:20,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:20,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:20,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:20,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:20,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146279141] [2020-10-13 14:12:20,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:20,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 14:12:20,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758893497] [2020-10-13 14:12:20,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 14:12:20,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:20,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 14:12:20,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:12:20,726 INFO L87 Difference]: Start difference. First operand 306 states and 418 transitions. Second operand 8 states. [2020-10-13 14:12:20,893 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:12:21,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:21,481 INFO L93 Difference]: Finished difference Result 596 states and 841 transitions. [2020-10-13 14:12:21,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 14:12:21,485 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-13 14:12:21,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:21,487 INFO L225 Difference]: With dead ends: 596 [2020-10-13 14:12:21,487 INFO L226 Difference]: Without dead ends: 411 [2020-10-13 14:12:21,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-10-13 14:12:21,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-10-13 14:12:21,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 306. [2020-10-13 14:12:21,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-10-13 14:12:21,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 416 transitions. [2020-10-13 14:12:21,523 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 416 transitions. Word has length 56 [2020-10-13 14:12:21,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:21,523 INFO L479 AbstractCegarLoop]: Abstraction has 306 states and 416 transitions. [2020-10-13 14:12:21,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 14:12:21,524 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 416 transitions. [2020-10-13 14:12:21,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 14:12:21,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:21,524 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] [2020-10-13 14:12:21,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 14:12:21,525 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:21,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:21,525 INFO L82 PathProgramCache]: Analyzing trace with hash -870647387, now seen corresponding path program 1 times [2020-10-13 14:12:21,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:21,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324559643] [2020-10-13 14:12:21,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:21,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:21,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:21,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:21,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:22,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:22,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:23,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:23,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 14:12:23,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:12:23,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1537 [2020-10-13 14:12:23,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:23,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:12:23,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:12:23,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 14:12:23,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:23,234 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:23,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:23,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:23,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:23,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:23,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:23,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:12:23,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:23,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:23,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:23,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:23,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:23,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:23,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324559643] [2020-10-13 14:12:23,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:23,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:12:23,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098023767] [2020-10-13 14:12:23,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:12:23,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:23,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:12:23,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:12:23,253 INFO L87 Difference]: Start difference. First operand 306 states and 416 transitions. Second operand 7 states. [2020-10-13 14:12:23,413 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-13 14:12:23,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:23,935 INFO L93 Difference]: Finished difference Result 689 states and 971 transitions. [2020-10-13 14:12:23,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:12:23,935 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-10-13 14:12:23,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:23,937 INFO L225 Difference]: With dead ends: 689 [2020-10-13 14:12:23,938 INFO L226 Difference]: Without dead ends: 484 [2020-10-13 14:12:23,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:12:23,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-10-13 14:12:23,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 286. [2020-10-13 14:12:23,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-10-13 14:12:23,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 389 transitions. [2020-10-13 14:12:23,976 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 389 transitions. Word has length 56 [2020-10-13 14:12:23,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:23,977 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 389 transitions. [2020-10-13 14:12:23,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:12:23,977 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 389 transitions. [2020-10-13 14:12:23,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 14:12:23,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:23,978 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] [2020-10-13 14:12:23,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 14:12:23,978 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:23,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:23,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1758486379, now seen corresponding path program 1 times [2020-10-13 14:12:23,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:23,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389167401] [2020-10-13 14:12:23,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:24,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:24,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:24,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:24,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:24,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:24,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 14:12:24,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 14:12:24,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 694 [2020-10-13 14:12:24,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:24,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 14:12:24,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 14:12:24,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 14:12:24,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:24,952 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:24,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:24,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:24,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:24,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:24,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:24,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:12:24,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:24,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:24,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:24,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:24,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:24,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:24,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389167401] [2020-10-13 14:12:24,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:24,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 14:12:24,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109777862] [2020-10-13 14:12:24,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 14:12:24,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:24,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 14:12:24,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-13 14:12:24,972 INFO L87 Difference]: Start difference. First operand 286 states and 389 transitions. Second operand 12 states. [2020-10-13 14:12:25,136 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 14:12:26,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:26,418 INFO L93 Difference]: Finished difference Result 716 states and 1031 transitions. [2020-10-13 14:12:26,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 14:12:26,418 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-10-13 14:12:26,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:26,421 INFO L225 Difference]: With dead ends: 716 [2020-10-13 14:12:26,421 INFO L226 Difference]: Without dead ends: 710 [2020-10-13 14:12:26,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2020-10-13 14:12:26,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2020-10-13 14:12:26,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 286. [2020-10-13 14:12:26,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-10-13 14:12:26,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 387 transitions. [2020-10-13 14:12:26,467 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 387 transitions. Word has length 57 [2020-10-13 14:12:26,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:26,467 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 387 transitions. [2020-10-13 14:12:26,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 14:12:26,468 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 387 transitions. [2020-10-13 14:12:26,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 14:12:26,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:26,468 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] [2020-10-13 14:12:26,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 14:12:26,469 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:26,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:26,469 INFO L82 PathProgramCache]: Analyzing trace with hash 860193789, now seen corresponding path program 1 times [2020-10-13 14:12:26,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:26,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933444154] [2020-10-13 14:12:26,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:26,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:26,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:26,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:26,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:27,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:27,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 14:12:27,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 14:12:27,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 781 [2020-10-13 14:12:27,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:27,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:12:27,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:12:27,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 14:12:27,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:27,485 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:27,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:27,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:27,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:27,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:27,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:27,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:12:27,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:27,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:27,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:27,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:27,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:27,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:27,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933444154] [2020-10-13 14:12:27,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:27,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:12:27,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142960976] [2020-10-13 14:12:27,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:12:27,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:27,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:12:27,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:12:27,505 INFO L87 Difference]: Start difference. First operand 286 states and 387 transitions. Second operand 11 states. [2020-10-13 14:12:27,655 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 14:12:28,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:28,442 INFO L93 Difference]: Finished difference Result 387 states and 530 transitions. [2020-10-13 14:12:28,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:12:28,444 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-13 14:12:28,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:28,446 INFO L225 Difference]: With dead ends: 387 [2020-10-13 14:12:28,446 INFO L226 Difference]: Without dead ends: 375 [2020-10-13 14:12:28,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-10-13 14:12:28,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-10-13 14:12:28,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 286. [2020-10-13 14:12:28,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-10-13 14:12:28,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 386 transitions. [2020-10-13 14:12:28,496 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 386 transitions. Word has length 57 [2020-10-13 14:12:28,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:28,496 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 386 transitions. [2020-10-13 14:12:28,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:12:28,497 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 386 transitions. [2020-10-13 14:12:28,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 14:12:28,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:28,498 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] [2020-10-13 14:12:28,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 14:12:28,498 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:28,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:28,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1885946176, now seen corresponding path program 1 times [2020-10-13 14:12:28,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:28,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143458058] [2020-10-13 14:12:28,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:28,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:28,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:28,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 14:12:28,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:28,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-13 14:12:28,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:28,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:12:28,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:12:28,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 14:12:28,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:12:28,888 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:28,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:28,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:28,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:28,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:28,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:28,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:12:28,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:28,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:28,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:28,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:28,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:28,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143458058] [2020-10-13 14:12:28,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:28,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:12:28,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152972944] [2020-10-13 14:12:28,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:12:28,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:28,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:12:28,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:12:28,908 INFO L87 Difference]: Start difference. First operand 286 states and 386 transitions. Second operand 9 states. [2020-10-13 14:12:29,059 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-13 14:12:29,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:29,801 INFO L93 Difference]: Finished difference Result 369 states and 512 transitions. [2020-10-13 14:12:29,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 14:12:29,801 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-10-13 14:12:29,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:29,803 INFO L225 Difference]: With dead ends: 369 [2020-10-13 14:12:29,803 INFO L226 Difference]: Without dead ends: 363 [2020-10-13 14:12:29,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-13 14:12:29,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-13 14:12:29,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 280. [2020-10-13 14:12:29,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-10-13 14:12:29,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 379 transitions. [2020-10-13 14:12:29,841 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 379 transitions. Word has length 58 [2020-10-13 14:12:29,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:29,841 INFO L479 AbstractCegarLoop]: Abstraction has 280 states and 379 transitions. [2020-10-13 14:12:29,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:12:29,841 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 379 transitions. [2020-10-13 14:12:29,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 14:12:29,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:29,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:12:29,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 14:12:29,843 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:29,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:29,843 INFO L82 PathProgramCache]: Analyzing trace with hash 896219597, now seen corresponding path program 1 times [2020-10-13 14:12:29,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:29,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684388586] [2020-10-13 14:12:29,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:29,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:29,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:29,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 14:12:29,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:29,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-13 14:12:29,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:29,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:12:29,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:12:29,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 14:12:29,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:30,283 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:30,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:30,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:30,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:30,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:30,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:30,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 14:12:30,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:30,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:30,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:30,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:30,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:30,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:30,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684388586] [2020-10-13 14:12:30,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:30,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:12:30,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177231540] [2020-10-13 14:12:30,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:12:30,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:30,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:12:30,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:12:30,309 INFO L87 Difference]: Start difference. First operand 280 states and 379 transitions. Second operand 9 states. [2020-10-13 14:12:30,489 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-13 14:12:31,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:31,278 INFO L93 Difference]: Finished difference Result 363 states and 505 transitions. [2020-10-13 14:12:31,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 14:12:31,278 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-10-13 14:12:31,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:31,279 INFO L225 Difference]: With dead ends: 363 [2020-10-13 14:12:31,279 INFO L226 Difference]: Without dead ends: 351 [2020-10-13 14:12:31,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-13 14:12:31,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-10-13 14:12:31,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 268. [2020-10-13 14:12:31,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-13 14:12:31,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 366 transitions. [2020-10-13 14:12:31,328 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 366 transitions. Word has length 58 [2020-10-13 14:12:31,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:31,328 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 366 transitions. [2020-10-13 14:12:31,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:12:31,328 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 366 transitions. [2020-10-13 14:12:31,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-13 14:12:31,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:31,329 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] [2020-10-13 14:12:31,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 14:12:31,329 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:31,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:31,330 INFO L82 PathProgramCache]: Analyzing trace with hash 691517270, now seen corresponding path program 1 times [2020-10-13 14:12:31,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:31,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462201081] [2020-10-13 14:12:31,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:31,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:31,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:31,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:31,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:31,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:31,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:32,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:32,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:32,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:32,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:32,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:35,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:35,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:35,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:36,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:36,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 14:12:36,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:12:36,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:12:36,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:36,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:12:36,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 14:12:36,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 14:12:36,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:36,508 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:36,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:36,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:36,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:36,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:36,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:36,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:12:36,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:36,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:36,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:36,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:36,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:36,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:36,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462201081] [2020-10-13 14:12:36,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:36,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:12:36,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892010603] [2020-10-13 14:12:36,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:12:36,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:36,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:12:36,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:12:36,536 INFO L87 Difference]: Start difference. First operand 268 states and 366 transitions. Second operand 4 states. [2020-10-13 14:12:36,699 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-13 14:12:37,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:37,159 INFO L93 Difference]: Finished difference Result 576 states and 836 transitions. [2020-10-13 14:12:37,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:12:37,160 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-10-13 14:12:37,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:37,162 INFO L225 Difference]: With dead ends: 576 [2020-10-13 14:12:37,162 INFO L226 Difference]: Without dead ends: 414 [2020-10-13 14:12:37,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:12:37,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2020-10-13 14:12:37,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 398. [2020-10-13 14:12:37,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-10-13 14:12:37,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 564 transitions. [2020-10-13 14:12:37,261 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 564 transitions. Word has length 75 [2020-10-13 14:12:37,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:37,261 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 564 transitions. [2020-10-13 14:12:37,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:12:37,261 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 564 transitions. [2020-10-13 14:12:37,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 14:12:37,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:37,262 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] [2020-10-13 14:12:37,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 14:12:37,263 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:37,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:37,263 INFO L82 PathProgramCache]: Analyzing trace with hash 859605163, now seen corresponding path program 1 times [2020-10-13 14:12:37,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:37,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356695974] [2020-10-13 14:12:37,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:37,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:37,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:37,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:37,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:37,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:37,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:37,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:37,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:37,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:37,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:39,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:39,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:39,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:40,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:40,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:40,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:40,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:41,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:41,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:42,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:42,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:42,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 14:12:42,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-13 14:12:42,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:12:42,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:42,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:12:42,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 14:12:42,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 14:12:42,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:42,418 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:42,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:42,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:42,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:42,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:42,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:42,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:12:42,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:42,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:42,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:42,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:42,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:42,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:42,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356695974] [2020-10-13 14:12:42,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:42,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:12:42,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004953958] [2020-10-13 14:12:42,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:12:42,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:42,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:12:42,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:12:42,437 INFO L87 Difference]: Start difference. First operand 398 states and 564 transitions. Second operand 5 states. [2020-10-13 14:12:42,571 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 14:12:43,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:43,005 INFO L93 Difference]: Finished difference Result 827 states and 1225 transitions. [2020-10-13 14:12:43,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:12:43,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 76 [2020-10-13 14:12:43,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:43,008 INFO L225 Difference]: With dead ends: 827 [2020-10-13 14:12:43,008 INFO L226 Difference]: Without dead ends: 535 [2020-10-13 14:12:43,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:12:43,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2020-10-13 14:12:43,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 366. [2020-10-13 14:12:43,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-10-13 14:12:43,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 527 transitions. [2020-10-13 14:12:43,122 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 527 transitions. Word has length 76 [2020-10-13 14:12:43,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:43,122 INFO L479 AbstractCegarLoop]: Abstraction has 366 states and 527 transitions. [2020-10-13 14:12:43,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:12:43,122 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 527 transitions. [2020-10-13 14:12:43,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 14:12:43,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:43,123 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] [2020-10-13 14:12:43,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 14:12:43,124 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:43,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:43,124 INFO L82 PathProgramCache]: Analyzing trace with hash -280746548, now seen corresponding path program 1 times [2020-10-13 14:12:43,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:43,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88699606] [2020-10-13 14:12:43,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:43,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:43,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:43,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:43,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:43,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:43,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:43,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:43,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:43,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:43,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:43,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:44,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:44,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:45,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:45,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:45,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:45,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:45,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:48,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:48,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 14:12:48,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:12:48,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 14:12:48,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:48,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:12:48,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-13 14:12:48,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 14:12:48,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:48,287 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:48,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:48,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:48,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:48,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:48,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:48,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:12:48,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:48,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:48,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:48,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:48,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:48,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:48,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88699606] [2020-10-13 14:12:48,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:48,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:12:48,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233471328] [2020-10-13 14:12:48,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:12:48,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:48,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:12:48,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:12:48,307 INFO L87 Difference]: Start difference. First operand 366 states and 527 transitions. Second operand 4 states. [2020-10-13 14:12:48,447 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 14:12:48,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:48,881 INFO L93 Difference]: Finished difference Result 950 states and 1421 transitions. [2020-10-13 14:12:48,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:12:48,882 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-10-13 14:12:48,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:48,886 INFO L225 Difference]: With dead ends: 950 [2020-10-13 14:12:48,886 INFO L226 Difference]: Without dead ends: 658 [2020-10-13 14:12:48,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:12:48,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-13 14:12:49,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 656. [2020-10-13 14:12:49,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 656 states. [2020-10-13 14:12:49,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 957 transitions. [2020-10-13 14:12:49,097 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 957 transitions. Word has length 76 [2020-10-13 14:12:49,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:49,098 INFO L479 AbstractCegarLoop]: Abstraction has 656 states and 957 transitions. [2020-10-13 14:12:49,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:12:49,098 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 957 transitions. [2020-10-13 14:12:49,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 14:12:49,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:49,099 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] [2020-10-13 14:12:49,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 14:12:49,100 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:49,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:49,100 INFO L82 PathProgramCache]: Analyzing trace with hash 177974596, now seen corresponding path program 1 times [2020-10-13 14:12:49,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:49,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565872690] [2020-10-13 14:12:49,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:49,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:49,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:49,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:49,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:49,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:49,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:49,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:49,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:49,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:49,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:49,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:50,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:51,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:52,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:52,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:52,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:54,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:54,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 14:12:54,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:12:54,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:12:54,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:54,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:12:54,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 14:12:54,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 14:12:54,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:54,269 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:12:54,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:12:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:54,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:54,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:12:54,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:12:54,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:12:54,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:12:54,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:12:54,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:12:54,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:12:54,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:12:54,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:12:54,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:12:54,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565872690] [2020-10-13 14:12:54,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:12:54,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:12:54,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807060604] [2020-10-13 14:12:54,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:12:54,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:12:54,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:12:54,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:12:54,289 INFO L87 Difference]: Start difference. First operand 656 states and 957 transitions. Second operand 4 states. [2020-10-13 14:12:54,440 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-13 14:12:55,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:12:55,068 INFO L93 Difference]: Finished difference Result 1756 states and 2599 transitions. [2020-10-13 14:12:55,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:12:55,069 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-10-13 14:12:55,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:12:55,074 INFO L225 Difference]: With dead ends: 1756 [2020-10-13 14:12:55,074 INFO L226 Difference]: Without dead ends: 1174 [2020-10-13 14:12:55,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:12:55,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2020-10-13 14:12:55,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1108. [2020-10-13 14:12:55,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1108 states. [2020-10-13 14:12:55,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1625 transitions. [2020-10-13 14:12:55,363 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1625 transitions. Word has length 78 [2020-10-13 14:12:55,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:12:55,363 INFO L479 AbstractCegarLoop]: Abstraction has 1108 states and 1625 transitions. [2020-10-13 14:12:55,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:12:55,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1625 transitions. [2020-10-13 14:12:55,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 14:12:55,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:12:55,364 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] [2020-10-13 14:12:55,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 14:12:55,365 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:12:55,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:12:55,365 INFO L82 PathProgramCache]: Analyzing trace with hash -204474920, now seen corresponding path program 1 times [2020-10-13 14:12:55,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:12:55,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739583253] [2020-10-13 14:12:55,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:12:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:12:55,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:55,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:55,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:55,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:55,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:55,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:55,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:55,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:56,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:56,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:57,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:12:57,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:00,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:00,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:00,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:00,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:00,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 14:13:00,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:13:00,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:13:00,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:00,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:13:00,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 14:13:00,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 14:13:00,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:00,523 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:13:00,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:00,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:00,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:00,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:00,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:00,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:13:00,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:00,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:00,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:00,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:00,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:00,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:13:00,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739583253] [2020-10-13 14:13:00,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:00,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:13:00,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352559129] [2020-10-13 14:13:00,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:13:00,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:00,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:13:00,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:13:00,541 INFO L87 Difference]: Start difference. First operand 1108 states and 1625 transitions. Second operand 5 states. [2020-10-13 14:13:00,674 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 14:13:01,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:01,263 INFO L93 Difference]: Finished difference Result 2167 states and 3203 transitions. [2020-10-13 14:13:01,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:13:01,263 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-13 14:13:01,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:01,268 INFO L225 Difference]: With dead ends: 2167 [2020-10-13 14:13:01,268 INFO L226 Difference]: Without dead ends: 1133 [2020-10-13 14:13:01,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:13:01,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2020-10-13 14:13:01,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1095. [2020-10-13 14:13:01,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1095 states. [2020-10-13 14:13:01,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1610 transitions. [2020-10-13 14:13:01,552 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1610 transitions. Word has length 79 [2020-10-13 14:13:01,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:01,553 INFO L479 AbstractCegarLoop]: Abstraction has 1095 states and 1610 transitions. [2020-10-13 14:13:01,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:13:01,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1610 transitions. [2020-10-13 14:13:01,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 14:13:01,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:01,554 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] [2020-10-13 14:13:01,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 14:13:01,554 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:01,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:01,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1381079239, now seen corresponding path program 1 times [2020-10-13 14:13:01,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:01,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542944873] [2020-10-13 14:13:01,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:01,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:01,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:01,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:01,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:01,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:01,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:01,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:03,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:03,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 14:13:03,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:13:03,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2282 [2020-10-13 14:13:03,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:03,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:13:03,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-13 14:13:03,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 14:13:03,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:03,992 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:13:03,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:03,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:04,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:04,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:04,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:04,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:13:04,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:04,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:04,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:04,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:04,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:04,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:13:04,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542944873] [2020-10-13 14:13:04,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:04,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:13:04,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976709626] [2020-10-13 14:13:04,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:13:04,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:04,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:13:04,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:13:04,011 INFO L87 Difference]: Start difference. First operand 1095 states and 1610 transitions. Second operand 4 states. [2020-10-13 14:13:04,154 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 14:13:04,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:04,715 INFO L93 Difference]: Finished difference Result 2131 states and 3156 transitions. [2020-10-13 14:13:04,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:13:04,715 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-10-13 14:13:04,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:04,719 INFO L225 Difference]: With dead ends: 2131 [2020-10-13 14:13:04,719 INFO L226 Difference]: Without dead ends: 1097 [2020-10-13 14:13:04,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:13:04,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2020-10-13 14:13:05,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1095. [2020-10-13 14:13:05,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1095 states. [2020-10-13 14:13:05,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1594 transitions. [2020-10-13 14:13:05,022 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1594 transitions. Word has length 79 [2020-10-13 14:13:05,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:05,022 INFO L479 AbstractCegarLoop]: Abstraction has 1095 states and 1594 transitions. [2020-10-13 14:13:05,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:13:05,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1594 transitions. [2020-10-13 14:13:05,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 14:13:05,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:05,023 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] [2020-10-13 14:13:05,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 14:13:05,023 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:05,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:05,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1447572751, now seen corresponding path program 1 times [2020-10-13 14:13:05,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:05,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068386433] [2020-10-13 14:13:05,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:05,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:05,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:05,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:05,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:05,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:05,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:05,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:05,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:06,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:07,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:07,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 14:13:07,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:13:07,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2103 [2020-10-13 14:13:07,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:07,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:13:07,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 14:13:07,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:13:07,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:07,277 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:13:07,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:07,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:07,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:07,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:07,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:07,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:13:07,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:07,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:07,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:07,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:07,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:07,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:13:07,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068386433] [2020-10-13 14:13:07,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:07,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:13:07,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140847144] [2020-10-13 14:13:07,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:13:07,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:07,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:13:07,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:13:07,295 INFO L87 Difference]: Start difference. First operand 1095 states and 1594 transitions. Second operand 4 states. [2020-10-13 14:13:08,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:08,215 INFO L93 Difference]: Finished difference Result 2955 states and 4300 transitions. [2020-10-13 14:13:08,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:13:08,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-10-13 14:13:08,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:08,223 INFO L225 Difference]: With dead ends: 2955 [2020-10-13 14:13:08,223 INFO L226 Difference]: Without dead ends: 1921 [2020-10-13 14:13:08,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:13:08,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2020-10-13 14:13:08,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 1855. [2020-10-13 14:13:08,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1855 states. [2020-10-13 14:13:08,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 2610 transitions. [2020-10-13 14:13:08,701 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 2610 transitions. Word has length 79 [2020-10-13 14:13:08,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:08,702 INFO L479 AbstractCegarLoop]: Abstraction has 1855 states and 2610 transitions. [2020-10-13 14:13:08,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:13:08,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 2610 transitions. [2020-10-13 14:13:08,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 14:13:08,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:08,702 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] [2020-10-13 14:13:08,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 14:13:08,703 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:08,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:08,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1954743247, now seen corresponding path program 1 times [2020-10-13 14:13:08,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:08,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611286063] [2020-10-13 14:13:08,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:08,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:08,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:08,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:08,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:08,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:08,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:08,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:08,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:09,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:09,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:09,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:09,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:09,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:09,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:10,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:10,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:11,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:12,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:12,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:13,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:13,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 14:13:13,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:13:13,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:13:13,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:13,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:13:13,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-13 14:13:13,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 14:13:13,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:13,860 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:13:13,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:13,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:13,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:13,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:13,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:13,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:13:13,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:13,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:13,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:13,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:13,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:13,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:13:13,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611286063] [2020-10-13 14:13:13,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:13,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:13:13,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707059848] [2020-10-13 14:13:13,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:13:13,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:13,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:13:13,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:13:13,883 INFO L87 Difference]: Start difference. First operand 1855 states and 2610 transitions. Second operand 4 states. [2020-10-13 14:13:14,036 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-13 14:13:15,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:15,011 INFO L93 Difference]: Finished difference Result 4323 states and 6116 transitions. [2020-10-13 14:13:15,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:13:15,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-10-13 14:13:15,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:15,017 INFO L225 Difference]: With dead ends: 4323 [2020-10-13 14:13:15,017 INFO L226 Difference]: Without dead ends: 2529 [2020-10-13 14:13:15,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:13:15,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2529 states. [2020-10-13 14:13:15,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2529 to 2495. [2020-10-13 14:13:15,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2495 states. [2020-10-13 14:13:15,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2495 states to 2495 states and 3458 transitions. [2020-10-13 14:13:15,701 INFO L78 Accepts]: Start accepts. Automaton has 2495 states and 3458 transitions. Word has length 80 [2020-10-13 14:13:15,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:15,701 INFO L479 AbstractCegarLoop]: Abstraction has 2495 states and 3458 transitions. [2020-10-13 14:13:15,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:13:15,701 INFO L276 IsEmpty]: Start isEmpty. Operand 2495 states and 3458 transitions. [2020-10-13 14:13:15,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 14:13:15,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:15,702 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] [2020-10-13 14:13:15,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 14:13:15,702 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:15,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:15,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1735888529, now seen corresponding path program 1 times [2020-10-13 14:13:15,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:15,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572090744] [2020-10-13 14:13:15,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:15,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:15,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:15,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:15,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:15,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:15,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:16,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:16,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:16,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:16,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:16,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:16,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:17,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:17,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:18,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:18,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:19,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:19,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:20,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:20,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:20,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:20,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 14:13:20,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-13 14:13:20,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 14:13:20,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:20,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:13:20,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 14:13:20,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 14:13:20,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:20,899 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:13:20,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:20,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:20,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:20,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:20,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:20,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 14:13:20,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:20,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:20,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:20,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:20,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:20,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:13:20,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572090744] [2020-10-13 14:13:20,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:20,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:13:20,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381911098] [2020-10-13 14:13:20,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:13:20,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:20,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:13:20,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:13:20,919 INFO L87 Difference]: Start difference. First operand 2495 states and 3458 transitions. Second operand 4 states. [2020-10-13 14:13:21,066 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-13 14:13:22,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:22,346 INFO L93 Difference]: Finished difference Result 5959 states and 8264 transitions. [2020-10-13 14:13:22,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:13:22,347 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-10-13 14:13:22,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:22,352 INFO L225 Difference]: With dead ends: 5959 [2020-10-13 14:13:22,352 INFO L226 Difference]: Without dead ends: 3525 [2020-10-13 14:13:22,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:13:22,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3525 states. [2020-10-13 14:13:23,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3525 to 3243. [2020-10-13 14:13:23,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3243 states. [2020-10-13 14:13:23,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3243 states to 3243 states and 4430 transitions. [2020-10-13 14:13:23,190 INFO L78 Accepts]: Start accepts. Automaton has 3243 states and 4430 transitions. Word has length 80 [2020-10-13 14:13:23,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:23,190 INFO L479 AbstractCegarLoop]: Abstraction has 3243 states and 4430 transitions. [2020-10-13 14:13:23,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:13:23,190 INFO L276 IsEmpty]: Start isEmpty. Operand 3243 states and 4430 transitions. [2020-10-13 14:13:23,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 14:13:23,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:23,191 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] [2020-10-13 14:13:23,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 14:13:23,192 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:23,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:23,192 INFO L82 PathProgramCache]: Analyzing trace with hash -255329314, now seen corresponding path program 1 times [2020-10-13 14:13:23,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:23,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745720629] [2020-10-13 14:13:23,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:23,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:23,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:23,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:23,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:23,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:25,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:25,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 14:13:25,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:13:25,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1978 [2020-10-13 14:13:25,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:25,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:13:25,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 14:13:25,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 14:13:25,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:25,343 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:13:25,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:25,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:25,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:25,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:25,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:25,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:13:25,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:25,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:25,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:25,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:25,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:25,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:13:25,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745720629] [2020-10-13 14:13:25,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:25,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:13:25,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289294012] [2020-10-13 14:13:25,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:13:25,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:25,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:13:25,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:13:25,363 INFO L87 Difference]: Start difference. First operand 3243 states and 4430 transitions. Second operand 6 states. [2020-10-13 14:13:27,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:27,145 INFO L93 Difference]: Finished difference Result 4949 states and 6710 transitions. [2020-10-13 14:13:27,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 14:13:27,146 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-10-13 14:13:27,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:27,155 INFO L225 Difference]: With dead ends: 4949 [2020-10-13 14:13:27,155 INFO L226 Difference]: Without dead ends: 4947 [2020-10-13 14:13:27,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:13:27,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4947 states. [2020-10-13 14:13:28,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4947 to 3339. [2020-10-13 14:13:28,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3339 states. [2020-10-13 14:13:28,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3339 states to 3339 states and 4494 transitions. [2020-10-13 14:13:28,162 INFO L78 Accepts]: Start accepts. Automaton has 3339 states and 4494 transitions. Word has length 80 [2020-10-13 14:13:28,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:28,163 INFO L479 AbstractCegarLoop]: Abstraction has 3339 states and 4494 transitions. [2020-10-13 14:13:28,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:13:28,163 INFO L276 IsEmpty]: Start isEmpty. Operand 3339 states and 4494 transitions. [2020-10-13 14:13:28,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 14:13:28,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:28,164 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:13:28,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 14:13:28,165 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:28,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:28,165 INFO L82 PathProgramCache]: Analyzing trace with hash -886067989, now seen corresponding path program 1 times [2020-10-13 14:13:28,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:28,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281224322] [2020-10-13 14:13:28,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:28,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:28,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:28,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:28,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:28,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:28,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:29,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:29,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:29,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:29,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:29,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:29,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:29,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:30,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:30,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:30,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:33,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:33,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 14:13:33,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:13:33,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:13:33,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:33,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:13:33,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-13 14:13:33,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 14:13:33,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:33,332 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:13:33,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:33,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:33,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:33,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:33,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:33,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:13:33,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:33,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:33,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:33,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:33,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:33,352 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:13:33,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281224322] [2020-10-13 14:13:33,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:33,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:13:33,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452812547] [2020-10-13 14:13:33,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:13:33,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:33,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:13:33,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:13:33,354 INFO L87 Difference]: Start difference. First operand 3339 states and 4494 transitions. Second operand 4 states. [2020-10-13 14:13:34,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:34,664 INFO L93 Difference]: Finished difference Result 6619 states and 8924 transitions. [2020-10-13 14:13:34,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:13:34,664 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-13 14:13:34,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:34,670 INFO L225 Difference]: With dead ends: 6619 [2020-10-13 14:13:34,670 INFO L226 Difference]: Without dead ends: 3341 [2020-10-13 14:13:34,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:13:34,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3341 states. [2020-10-13 14:13:35,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3341 to 3259. [2020-10-13 14:13:35,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3259 states. [2020-10-13 14:13:35,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3259 states to 3259 states and 4318 transitions. [2020-10-13 14:13:35,664 INFO L78 Accepts]: Start accepts. Automaton has 3259 states and 4318 transitions. Word has length 100 [2020-10-13 14:13:35,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:35,665 INFO L479 AbstractCegarLoop]: Abstraction has 3259 states and 4318 transitions. [2020-10-13 14:13:35,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:13:35,665 INFO L276 IsEmpty]: Start isEmpty. Operand 3259 states and 4318 transitions. [2020-10-13 14:13:35,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 14:13:35,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:35,666 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:13:35,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 14:13:35,666 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:35,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:35,667 INFO L82 PathProgramCache]: Analyzing trace with hash 613622742, now seen corresponding path program 1 times [2020-10-13 14:13:35,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:35,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112723399] [2020-10-13 14:13:35,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:35,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:35,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:35,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:35,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:35,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:36,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:36,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:36,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:37,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:37,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:37,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:37,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:37,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:37,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:37,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:37,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:38,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:40,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:40,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 14:13:40,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:13:40,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:13:40,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:40,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 14:13:40,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 14:13:40,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 14:13:40,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:40,942 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:13:40,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:40,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:40,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:40,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:40,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:40,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:13:40,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:40,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:40,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:40,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:40,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:40,965 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 14:13:40,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112723399] [2020-10-13 14:13:40,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:40,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 14:13:40,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178429553] [2020-10-13 14:13:40,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 14:13:40,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:40,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 14:13:40,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-13 14:13:40,967 INFO L87 Difference]: Start difference. First operand 3259 states and 4318 transitions. Second operand 12 states. [2020-10-13 14:13:41,168 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-13 14:13:45,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:45,647 INFO L93 Difference]: Finished difference Result 13020 states and 17245 transitions. [2020-10-13 14:13:45,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 14:13:45,647 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 101 [2020-10-13 14:13:45,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:45,656 INFO L225 Difference]: With dead ends: 13020 [2020-10-13 14:13:45,656 INFO L226 Difference]: Without dead ends: 9816 [2020-10-13 14:13:45,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=192, Invalid=678, Unknown=0, NotChecked=0, Total=870 [2020-10-13 14:13:45,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9816 states. [2020-10-13 14:13:46,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9816 to 3263. [2020-10-13 14:13:46,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3263 states. [2020-10-13 14:13:46,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3263 states to 3263 states and 4322 transitions. [2020-10-13 14:13:46,629 INFO L78 Accepts]: Start accepts. Automaton has 3263 states and 4322 transitions. Word has length 101 [2020-10-13 14:13:46,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:46,629 INFO L479 AbstractCegarLoop]: Abstraction has 3263 states and 4322 transitions. [2020-10-13 14:13:46,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 14:13:46,629 INFO L276 IsEmpty]: Start isEmpty. Operand 3263 states and 4322 transitions. [2020-10-13 14:13:46,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 14:13:46,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:46,631 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:13:46,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 14:13:46,631 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:46,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:46,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1891717119, now seen corresponding path program 1 times [2020-10-13 14:13:46,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:46,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433477349] [2020-10-13 14:13:46,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:46,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:46,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:46,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:46,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:46,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:46,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:47,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:47,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:48,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:48,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:48,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:48,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:48,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:48,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:49,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:49,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:49,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:49,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:50,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:50,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:50,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:50,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:50,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:50,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:51,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:51,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 14:13:51,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-13 14:13:51,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:13:51,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:51,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 14:13:51,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:13:51,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 14:13:51,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:51,874 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:13:51,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:13:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:51,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:51,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:13:51,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:13:51,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:13:51,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:13:51,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:13:51,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:13:51,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:13:51,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:13:51,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:13:51,916 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 14:13:51,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433477349] [2020-10-13 14:13:51,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:13:51,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 14:13:51,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621147565] [2020-10-13 14:13:51,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 14:13:51,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:13:51,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 14:13:51,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:13:51,923 INFO L87 Difference]: Start difference. First operand 3263 states and 4322 transitions. Second operand 8 states. [2020-10-13 14:13:52,120 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 14:13:54,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:13:54,276 INFO L93 Difference]: Finished difference Result 8146 states and 10788 transitions. [2020-10-13 14:13:54,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 14:13:54,276 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 102 [2020-10-13 14:13:54,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:13:54,280 INFO L225 Difference]: With dead ends: 8146 [2020-10-13 14:13:54,280 INFO L226 Difference]: Without dead ends: 4942 [2020-10-13 14:13:54,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-10-13 14:13:54,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4942 states. [2020-10-13 14:13:55,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4942 to 3259. [2020-10-13 14:13:55,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3259 states. [2020-10-13 14:13:55,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3259 states to 3259 states and 4317 transitions. [2020-10-13 14:13:55,225 INFO L78 Accepts]: Start accepts. Automaton has 3259 states and 4317 transitions. Word has length 102 [2020-10-13 14:13:55,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:13:55,225 INFO L479 AbstractCegarLoop]: Abstraction has 3259 states and 4317 transitions. [2020-10-13 14:13:55,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 14:13:55,225 INFO L276 IsEmpty]: Start isEmpty. Operand 3259 states and 4317 transitions. [2020-10-13 14:13:55,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 14:13:55,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:13:55,226 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:13:55,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 14:13:55,227 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:13:55,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:13:55,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1130665979, now seen corresponding path program 1 times [2020-10-13 14:13:55,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:13:55,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386819383] [2020-10-13 14:13:55,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:13:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:13:55,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:55,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:55,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:55,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:55,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:55,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:56,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:56,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:56,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:57,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:57,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:13:59,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:00,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:00,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:00,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:00,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:00,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 14:14:00,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:14:00,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:14:00,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:00,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 14:14:00,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:14:00,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 14:14:00,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:00,832 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:14:00,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:00,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:00,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:00,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:00,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:00,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:14:00,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:00,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:00,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:00,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:00,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:14:00,895 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 14:14:00,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386819383] [2020-10-13 14:14:00,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:00,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-13 14:14:00,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268781363] [2020-10-13 14:14:00,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 14:14:00,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:00,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 14:14:00,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-10-13 14:14:00,900 INFO L87 Difference]: Start difference. First operand 3259 states and 4317 transitions. Second operand 17 states. [2020-10-13 14:14:01,436 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 158 [2020-10-13 14:14:06,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:06,371 INFO L93 Difference]: Finished difference Result 12970 states and 17195 transitions. [2020-10-13 14:14:06,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:14:06,372 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 103 [2020-10-13 14:14:06,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:06,380 INFO L225 Difference]: With dead ends: 12970 [2020-10-13 14:14:06,380 INFO L226 Difference]: Without dead ends: 9765 [2020-10-13 14:14:06,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=145, Invalid=611, Unknown=0, NotChecked=0, Total=756 [2020-10-13 14:14:06,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9765 states. [2020-10-13 14:14:07,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9765 to 3269. [2020-10-13 14:14:07,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3269 states. [2020-10-13 14:14:07,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3269 states to 3269 states and 4328 transitions. [2020-10-13 14:14:07,366 INFO L78 Accepts]: Start accepts. Automaton has 3269 states and 4328 transitions. Word has length 103 [2020-10-13 14:14:07,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:07,366 INFO L479 AbstractCegarLoop]: Abstraction has 3269 states and 4328 transitions. [2020-10-13 14:14:07,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 14:14:07,366 INFO L276 IsEmpty]: Start isEmpty. Operand 3269 states and 4328 transitions. [2020-10-13 14:14:07,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 14:14:07,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:07,368 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:14:07,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 14:14:07,368 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:07,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:07,368 INFO L82 PathProgramCache]: Analyzing trace with hash -21844719, now seen corresponding path program 1 times [2020-10-13 14:14:07,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:07,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37347933] [2020-10-13 14:14:07,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:07,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:07,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:07,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:07,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:07,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:07,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:08,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:09,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:09,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:10,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:10,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:11,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:11,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:11,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:12,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:12,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 14:14:12,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:14:12,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:14:12,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:12,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:14:12,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 14:14:12,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 14:14:12,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:12,899 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:14:12,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:12,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:12,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:12,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:12,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:12,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 14:14:12,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:12,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:12,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:12,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:12,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:12,928 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:14:12,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37347933] [2020-10-13 14:14:12,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 14:14:12,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 14:14:12,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576984392] [2020-10-13 14:14:12,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:14:12,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:12,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:14:12,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:14:12,929 INFO L87 Difference]: Start difference. First operand 3269 states and 4328 transitions. Second operand 11 states. [2020-10-13 14:14:13,311 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 150 [2020-10-13 14:14:22,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:22,135 INFO L93 Difference]: Finished difference Result 21082 states and 27682 transitions. [2020-10-13 14:14:22,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-13 14:14:22,136 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-13 14:14:22,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:22,152 INFO L225 Difference]: With dead ends: 21082 [2020-10-13 14:14:22,152 INFO L226 Difference]: Without dead ends: 17884 [2020-10-13 14:14:22,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=366, Invalid=1440, Unknown=0, NotChecked=0, Total=1806 [2020-10-13 14:14:22,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17884 states. [2020-10-13 14:14:24,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17884 to 6936. [2020-10-13 14:14:24,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6936 states. [2020-10-13 14:14:24,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6936 states to 6936 states and 9139 transitions. [2020-10-13 14:14:24,396 INFO L78 Accepts]: Start accepts. Automaton has 6936 states and 9139 transitions. Word has length 104 [2020-10-13 14:14:24,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:24,396 INFO L479 AbstractCegarLoop]: Abstraction has 6936 states and 9139 transitions. [2020-10-13 14:14:24,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:14:24,397 INFO L276 IsEmpty]: Start isEmpty. Operand 6936 states and 9139 transitions. [2020-10-13 14:14:24,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 14:14:24,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:24,399 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:14:24,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 14:14:24,400 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:24,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:24,400 INFO L82 PathProgramCache]: Analyzing trace with hash -2088309999, now seen corresponding path program 1 times [2020-10-13 14:14:24,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:24,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729794152] [2020-10-13 14:14:24,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:24,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:24,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:24,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:24,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:24,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:25,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:25,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:28,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:28,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:28,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:28,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:28,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:29,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:29,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:29,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:29,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 14:14:29,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:14:29,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:14:29,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:29,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:14:29,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 14:14:29,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 14:14:29,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:29,747 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 14:14:29,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:29,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:29,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:29,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:29,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:29,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:14:29,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:29,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:29,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:29,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:29,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:29,777 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:14:29,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729794152] [2020-10-13 14:14:29,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 14:14:29,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 14:14:29,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821515370] [2020-10-13 14:14:29,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:14:29,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:29,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:14:29,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:14:29,778 INFO L87 Difference]: Start difference. First operand 6936 states and 9139 transitions. Second operand 10 states. [2020-10-13 14:14:29,944 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-13 14:14:36,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:36,721 INFO L93 Difference]: Finished difference Result 23038 states and 30290 transitions. [2020-10-13 14:14:36,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 14:14:36,722 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2020-10-13 14:14:36,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:36,737 INFO L225 Difference]: With dead ends: 23038 [2020-10-13 14:14:36,737 INFO L226 Difference]: Without dead ends: 16180 [2020-10-13 14:14:36,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2020-10-13 14:14:36,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16180 states.