/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:44:57,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:44:57,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:44:57,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:44:57,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:44:57,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:44:57,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:44:57,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:44:57,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:44:57,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:44:57,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:44:57,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:44:57,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:44:57,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:44:57,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:44:57,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:44:57,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:44:57,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:44:57,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:44:57,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:44:57,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:44:58,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:44:58,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:44:58,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:44:58,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:44:58,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:44:58,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:44:58,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:44:58,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:44:58,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:44:58,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:44:58,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:44:58,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:44:58,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:44:58,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:44:58,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:44:58,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:44:58,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:44:58,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:44:58,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:44:58,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:44:58,022 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 [2020-10-14 08:44:58,067 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:44:58,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:44:58,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:44:58,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:44:58,069 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:44:58,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:44:58,069 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:44:58,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:44:58,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:44:58,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:44:58,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:44:58,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:44:58,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:44:58,072 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:44:58,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:44:58,072 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:44:58,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:44:58,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:44:58,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:44:58,073 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:44:58,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:44:58,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:44:58,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:44:58,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:44:58,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:44:58,075 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:44:58,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:44:58,075 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:44:58,075 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:44:58,076 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 08:44:58,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:44:58,380 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:44:58,384 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:44:58,386 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:44:58,388 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:44:58,389 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 08:44:58,461 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/371dc0897/4f4d517b4d5243eea80f242d0aaf3f88/FLAG76b5177be [2020-10-14 08:44:58,931 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:44:58,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 08:44:58,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/371dc0897/4f4d517b4d5243eea80f242d0aaf3f88/FLAG76b5177be [2020-10-14 08:44:59,269 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/371dc0897/4f4d517b4d5243eea80f242d0aaf3f88 [2020-10-14 08:44:59,277 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:44:59,279 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:44:59,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:44:59,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:44:59,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:44:59,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:44:59" (1/1) ... [2020-10-14 08:44:59,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@692914d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:44:59, skipping insertion in model container [2020-10-14 08:44:59,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:44:59" (1/1) ... [2020-10-14 08:44:59,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:44:59,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:44:59,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:44:59,875 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:44:59,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:44:59,992 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:44:59,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:44:59 WrapperNode [2020-10-14 08:44:59,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:44:59,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:44:59,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:44:59,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:45:00,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:44:59" (1/1) ... [2020-10-14 08:45:00,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:44:59" (1/1) ... [2020-10-14 08:45:00,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:44:59" (1/1) ... [2020-10-14 08:45:00,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:44:59" (1/1) ... [2020-10-14 08:45:00,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:44:59" (1/1) ... [2020-10-14 08:45:00,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:44:59" (1/1) ... [2020-10-14 08:45:00,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:44:59" (1/1) ... [2020-10-14 08:45:00,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:45:00,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:45:00,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:45:00,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:45:00,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:44:59" (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 [2020-10-14 08:45:00,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:45:00,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:45:00,176 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:45:00,177 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:45:00,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:45:00,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:45:00,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:45:00,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 08:45:00,178 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:45:00,179 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:45:00,179 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:45:00,179 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:45:00,179 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:45:00,179 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:45:00,179 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:45:00,180 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:45:00,180 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 08:45:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:45:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:45:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:45:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:45:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:45:00,964 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:45:00,964 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:45:00,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:45:00 BoogieIcfgContainer [2020-10-14 08:45:00,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:45:00,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:45:00,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:45:00,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:45:00,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:44:59" (1/3) ... [2020-10-14 08:45:00,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f49b6a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:45:00, skipping insertion in model container [2020-10-14 08:45:00,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:44:59" (2/3) ... [2020-10-14 08:45:00,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f49b6a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:45:00, skipping insertion in model container [2020-10-14 08:45:00,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:45:00" (3/3) ... [2020-10-14 08:45:00,986 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 08:45:00,994 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:45:01,002 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 08:45:01,015 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 08:45:01,039 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:45:01,039 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:45:01,039 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:45:01,039 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:45:01,039 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:45:01,040 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:45:01,040 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:45:01,040 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:45:01,060 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2020-10-14 08:45:01,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 08:45:01,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:45:01,069 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] [2020-10-14 08:45:01,070 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:45:01,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:45:01,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1081400223, now seen corresponding path program 1 times [2020-10-14 08:45:01,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:45:01,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006546265] [2020-10-14 08:45:01,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:45:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:01,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:01,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:01,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:01,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:01,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:02,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:03,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:03,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:06,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:06,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 08:45:06,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:45:06,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 08:45:06,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:06,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:06,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:45:06,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:45:06,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 08:45:06,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 08:45:06,741 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-14 08:45:06,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:45:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:06,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:06,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:06,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:45:06,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:45:06,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 08:45:06,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:06,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:06,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:45:06,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:45:06,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:45:06,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:45:06,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:45:06,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006546265] [2020-10-14 08:45:06,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:45:06,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:45:06,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203523026] [2020-10-14 08:45:06,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:45:06,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:45:06,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:45:06,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:45:06,886 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 6 states. [2020-10-14 08:45:07,169 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-14 08:45:07,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:45:07,950 INFO L93 Difference]: Finished difference Result 271 states and 439 transitions. [2020-10-14 08:45:07,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:45:07,953 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-10-14 08:45:07,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:45:07,970 INFO L225 Difference]: With dead ends: 271 [2020-10-14 08:45:07,971 INFO L226 Difference]: Without dead ends: 176 [2020-10-14 08:45:07,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:45:08,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-14 08:45:08,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 174. [2020-10-14 08:45:08,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-14 08:45:08,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 248 transitions. [2020-10-14 08:45:08,052 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 248 transitions. Word has length 65 [2020-10-14 08:45:08,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:45:08,053 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 248 transitions. [2020-10-14 08:45:08,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:45:08,053 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 248 transitions. [2020-10-14 08:45:08,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 08:45:08,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:45:08,059 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] [2020-10-14 08:45:08,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:45:08,060 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:45:08,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:45:08,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1383588864, now seen corresponding path program 1 times [2020-10-14 08:45:08,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:45:08,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319342994] [2020-10-14 08:45:08,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:45:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:08,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:08,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:08,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:08,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:08,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:08,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:09,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:09,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:13,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:13,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 08:45:13,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:45:13,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:45:13,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:13,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:13,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:45:13,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:45:13,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 08:45:13,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 08:45:13,316 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-14 08:45:13,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:45:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:13,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:13,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:13,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:45:13,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:45:13,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 08:45:13,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:13,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:13,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:45:13,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:45:13,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:45:13,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:45:13,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:45:13,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319342994] [2020-10-14 08:45:13,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:45:13,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:45:13,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214125141] [2020-10-14 08:45:13,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:45:13,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:45:13,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:45:13,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:45:13,360 INFO L87 Difference]: Start difference. First operand 174 states and 248 transitions. Second operand 6 states. [2020-10-14 08:45:13,525 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-14 08:45:13,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:45:13,944 INFO L93 Difference]: Finished difference Result 307 states and 452 transitions. [2020-10-14 08:45:13,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:45:13,945 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-14 08:45:13,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:45:13,947 INFO L225 Difference]: With dead ends: 307 [2020-10-14 08:45:13,947 INFO L226 Difference]: Without dead ends: 174 [2020-10-14 08:45:13,949 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 [2020-10-14 08:45:13,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-14 08:45:13,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-10-14 08:45:13,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-14 08:45:13,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 245 transitions. [2020-10-14 08:45:13,966 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 245 transitions. Word has length 66 [2020-10-14 08:45:13,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:45:13,967 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 245 transitions. [2020-10-14 08:45:13,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:45:13,967 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 245 transitions. [2020-10-14 08:45:13,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 08:45:13,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:45:13,969 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] [2020-10-14 08:45:13,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:45:13,969 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:45:13,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:45:13,970 INFO L82 PathProgramCache]: Analyzing trace with hash 2124104656, now seen corresponding path program 1 times [2020-10-14 08:45:13,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:45:13,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881642609] [2020-10-14 08:45:13,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:45:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:14,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:14,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:14,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:14,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:14,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:14,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:15,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:19,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:19,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 08:45:19,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:45:19,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 08:45:19,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:19,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:19,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:45:19,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:45:19,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 08:45:19,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:45:19,220 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-14 08:45:19,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:45:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:19,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:19,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:19,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:45:19,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:45:19,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 08:45:19,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:19,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:19,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:45:19,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:45:19,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:45:19,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:45:19,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:45:19,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881642609] [2020-10-14 08:45:19,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:45:19,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:45:19,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773440300] [2020-10-14 08:45:19,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:45:19,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:45:19,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:45:19,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:45:19,266 INFO L87 Difference]: Start difference. First operand 174 states and 245 transitions. Second operand 6 states. [2020-10-14 08:45:19,410 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-14 08:45:19,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:45:19,812 INFO L93 Difference]: Finished difference Result 311 states and 451 transitions. [2020-10-14 08:45:19,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:45:19,813 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-10-14 08:45:19,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:45:19,815 INFO L225 Difference]: With dead ends: 311 [2020-10-14 08:45:19,815 INFO L226 Difference]: Without dead ends: 174 [2020-10-14 08:45:19,817 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 [2020-10-14 08:45:19,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-14 08:45:19,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-10-14 08:45:19,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-14 08:45:19,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 242 transitions. [2020-10-14 08:45:19,832 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 242 transitions. Word has length 67 [2020-10-14 08:45:19,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:45:19,833 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 242 transitions. [2020-10-14 08:45:19,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:45:19,833 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 242 transitions. [2020-10-14 08:45:19,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 08:45:19,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:45:19,834 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] [2020-10-14 08:45:19,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:45:19,835 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:45:19,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:45:19,835 INFO L82 PathProgramCache]: Analyzing trace with hash -481390063, now seen corresponding path program 1 times [2020-10-14 08:45:19,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:45:19,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515599275] [2020-10-14 08:45:19,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:45:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:19,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:19,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:19,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:20,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:20,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:20,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:22,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:22,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:24,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:24,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 08:45:24,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:45:24,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:45:24,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:24,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:45:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:45:24,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 08:45:24,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:45:25,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:45:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:25,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:25,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:25,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:45:25,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:45:25,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 08:45:25,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:25,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:25,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:45:25,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:45:25,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:45:25,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:45:25,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:45:25,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515599275] [2020-10-14 08:45:25,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:45:25,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:45:25,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808200058] [2020-10-14 08:45:25,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:45:25,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:45:25,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:45:25,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:45:25,063 INFO L87 Difference]: Start difference. First operand 174 states and 242 transitions. Second operand 6 states. [2020-10-14 08:45:25,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:45:25,645 INFO L93 Difference]: Finished difference Result 431 states and 628 transitions. [2020-10-14 08:45:25,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:45:25,645 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-14 08:45:25,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:45:25,648 INFO L225 Difference]: With dead ends: 431 [2020-10-14 08:45:25,648 INFO L226 Difference]: Without dead ends: 290 [2020-10-14 08:45:25,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:45:25,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-14 08:45:25,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 288. [2020-10-14 08:45:25,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-10-14 08:45:25,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 416 transitions. [2020-10-14 08:45:25,673 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 416 transitions. Word has length 68 [2020-10-14 08:45:25,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:45:25,674 INFO L479 AbstractCegarLoop]: Abstraction has 288 states and 416 transitions. [2020-10-14 08:45:25,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:45:25,674 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 416 transitions. [2020-10-14 08:45:25,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 08:45:25,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:45:25,676 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] [2020-10-14 08:45:25,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:45:25,676 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:45:25,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:45:25,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1161652225, now seen corresponding path program 1 times [2020-10-14 08:45:25,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:45:25,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674205628] [2020-10-14 08:45:25,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:45:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:25,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:25,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:25,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:25,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:25,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:26,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:26,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:26,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:27,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:27,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:30,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:30,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:30,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 08:45:30,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:45:30,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 08:45:30,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:30,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:30,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:45:30,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-14 08:45:30,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 08:45:30,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:45:30,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:45:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:30,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:30,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:30,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:45:30,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:45:30,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:45:30,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:30,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:30,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:45:30,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:45:30,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:45:30,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:45:30,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:45:30,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674205628] [2020-10-14 08:45:30,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:45:30,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:45:30,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433364304] [2020-10-14 08:45:30,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:45:30,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:45:30,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:45:30,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:45:30,869 INFO L87 Difference]: Start difference. First operand 288 states and 416 transitions. Second operand 4 states. [2020-10-14 08:45:31,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:45:31,505 INFO L93 Difference]: Finished difference Result 697 states and 1038 transitions. [2020-10-14 08:45:31,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:45:31,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-10-14 08:45:31,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:45:31,509 INFO L225 Difference]: With dead ends: 697 [2020-10-14 08:45:31,509 INFO L226 Difference]: Without dead ends: 499 [2020-10-14 08:45:31,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:45:31,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-10-14 08:45:31,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 497. [2020-10-14 08:45:31,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2020-10-14 08:45:31,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 728 transitions. [2020-10-14 08:45:31,546 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 728 transitions. Word has length 69 [2020-10-14 08:45:31,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:45:31,547 INFO L479 AbstractCegarLoop]: Abstraction has 497 states and 728 transitions. [2020-10-14 08:45:31,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:45:31,547 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 728 transitions. [2020-10-14 08:45:31,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 08:45:31,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:45:31,549 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] [2020-10-14 08:45:31,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:45:31,550 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:45:31,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:45:31,550 INFO L82 PathProgramCache]: Analyzing trace with hash -64079762, now seen corresponding path program 1 times [2020-10-14 08:45:31,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:45:31,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962580748] [2020-10-14 08:45:31,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:45:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:31,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:31,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:31,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:31,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:31,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:32,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:32,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:32,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:32,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:32,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:32,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:32,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:33,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:33,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:33,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:34,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:36,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:36,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 08:45:36,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:45:36,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:45:36,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:36,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:36,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:45:36,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:45:36,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 08:45:36,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:45:36,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:45:36,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:36,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:36,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:36,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:45:36,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:45:36,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:45:36,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:36,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:36,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:45:36,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:45:36,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:45:36,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:45:36,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:45:36,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962580748] [2020-10-14 08:45:36,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:45:36,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:45:36,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576757593] [2020-10-14 08:45:36,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:45:36,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:45:36,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:45:36,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:45:36,739 INFO L87 Difference]: Start difference. First operand 497 states and 728 transitions. Second operand 6 states. [2020-10-14 08:45:36,910 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-14 08:45:37,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:45:37,728 INFO L93 Difference]: Finished difference Result 1221 states and 1819 transitions. [2020-10-14 08:45:37,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:45:37,729 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-14 08:45:37,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:45:37,737 INFO L225 Difference]: With dead ends: 1221 [2020-10-14 08:45:37,737 INFO L226 Difference]: Without dead ends: 843 [2020-10-14 08:45:37,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:45:37,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2020-10-14 08:45:37,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 688. [2020-10-14 08:45:37,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2020-10-14 08:45:37,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1020 transitions. [2020-10-14 08:45:37,822 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1020 transitions. Word has length 71 [2020-10-14 08:45:37,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:45:37,824 INFO L479 AbstractCegarLoop]: Abstraction has 688 states and 1020 transitions. [2020-10-14 08:45:37,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:45:37,824 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1020 transitions. [2020-10-14 08:45:37,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 08:45:37,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:45:37,827 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] [2020-10-14 08:45:37,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:45:37,827 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:45:37,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:45:37,828 INFO L82 PathProgramCache]: Analyzing trace with hash 2135056324, now seen corresponding path program 1 times [2020-10-14 08:45:37,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:45:37,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482410450] [2020-10-14 08:45:37,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:45:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:37,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:37,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:37,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:38,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:38,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:38,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:39,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:39,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:42,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:42,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 08:45:42,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:45:42,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:45:42,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:42,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 08:45:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:45:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 08:45:42,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:45:43,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:45:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:43,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:43,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:43,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:45:43,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:45:43,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:45:43,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:43,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:43,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:45:43,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:45:43,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:45:43,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:45:43,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:45:43,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482410450] [2020-10-14 08:45:43,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:45:43,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 08:45:43,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166440747] [2020-10-14 08:45:43,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 08:45:43,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:45:43,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 08:45:43,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 08:45:43,046 INFO L87 Difference]: Start difference. First operand 688 states and 1020 transitions. Second operand 7 states. [2020-10-14 08:45:43,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:45:43,974 INFO L93 Difference]: Finished difference Result 3043 states and 4581 transitions. [2020-10-14 08:45:43,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:45:43,975 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 71 [2020-10-14 08:45:43,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:45:43,988 INFO L225 Difference]: With dead ends: 3043 [2020-10-14 08:45:43,989 INFO L226 Difference]: Without dead ends: 2469 [2020-10-14 08:45:43,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-14 08:45:43,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2020-10-14 08:45:44,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 1111. [2020-10-14 08:45:44,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1111 states. [2020-10-14 08:45:44,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1666 transitions. [2020-10-14 08:45:44,090 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1666 transitions. Word has length 71 [2020-10-14 08:45:44,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:45:44,090 INFO L479 AbstractCegarLoop]: Abstraction has 1111 states and 1666 transitions. [2020-10-14 08:45:44,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 08:45:44,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1666 transitions. [2020-10-14 08:45:44,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 08:45:44,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:45:44,092 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] [2020-10-14 08:45:44,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:45:44,092 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:45:44,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:45:44,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1826947571, now seen corresponding path program 1 times [2020-10-14 08:45:44,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:45:44,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729689667] [2020-10-14 08:45:44,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:45:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:44,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:44,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:44,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:44,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:44,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:44,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:45,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:45,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:45,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:45,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:46,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:46,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:46,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:47,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:48,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:49,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:49,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 08:45:49,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:45:49,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:45:49,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:49,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:49,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 08:45:49,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:45:49,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 08:45:49,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:45:49,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:45:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:49,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:49,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:49,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:45:49,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:45:49,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:45:49,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:49,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:49,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:45:49,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:45:49,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:45:49,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:45:49,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:45:49,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729689667] [2020-10-14 08:45:49,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:45:49,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 08:45:49,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517145569] [2020-10-14 08:45:49,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 08:45:49,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:45:49,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 08:45:49,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 08:45:49,288 INFO L87 Difference]: Start difference. First operand 1111 states and 1666 transitions. Second operand 7 states. [2020-10-14 08:45:49,445 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-14 08:45:50,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:45:50,119 INFO L93 Difference]: Finished difference Result 3649 states and 5499 transitions. [2020-10-14 08:45:50,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:45:50,120 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 71 [2020-10-14 08:45:50,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:45:50,135 INFO L225 Difference]: With dead ends: 3649 [2020-10-14 08:45:50,135 INFO L226 Difference]: Without dead ends: 3075 [2020-10-14 08:45:50,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-14 08:45:50,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3075 states. [2020-10-14 08:45:50,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3075 to 1701. [2020-10-14 08:45:50,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1701 states. [2020-10-14 08:45:50,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 2568 transitions. [2020-10-14 08:45:50,282 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 2568 transitions. Word has length 71 [2020-10-14 08:45:50,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:45:50,283 INFO L479 AbstractCegarLoop]: Abstraction has 1701 states and 2568 transitions. [2020-10-14 08:45:50,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 08:45:50,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 2568 transitions. [2020-10-14 08:45:50,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 08:45:50,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:45:50,284 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] [2020-10-14 08:45:50,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:45:50,285 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:45:50,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:45:50,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1493967333, now seen corresponding path program 1 times [2020-10-14 08:45:50,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:45:50,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770054873] [2020-10-14 08:45:50,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:45:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:50,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:50,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:50,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:50,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:50,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:50,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:51,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:51,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:51,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:52,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:53,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:55,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:55,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 08:45:55,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:45:55,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:45:55,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:55,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:55,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:45:55,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 08:45:55,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:45:55,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:45:55,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:45:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:55,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:55,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:55,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:45:55,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:45:55,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 08:45:55,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:55,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:55,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:45:55,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:45:55,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:45:55,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:45:55,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:45:55,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770054873] [2020-10-14 08:45:55,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:45:55,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:45:55,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625040940] [2020-10-14 08:45:55,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:45:55,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:45:55,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:45:55,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:45:55,464 INFO L87 Difference]: Start difference. First operand 1701 states and 2568 transitions. Second operand 4 states. [2020-10-14 08:45:56,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:45:56,231 INFO L93 Difference]: Finished difference Result 4613 states and 6954 transitions. [2020-10-14 08:45:56,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:45:56,232 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-10-14 08:45:56,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:45:56,246 INFO L225 Difference]: With dead ends: 4613 [2020-10-14 08:45:56,246 INFO L226 Difference]: Without dead ends: 3059 [2020-10-14 08:45:56,250 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 [2020-10-14 08:45:56,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3059 states. [2020-10-14 08:45:56,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3059 to 2993. [2020-10-14 08:45:56,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2993 states. [2020-10-14 08:45:56,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2993 states to 2993 states and 4428 transitions. [2020-10-14 08:45:56,476 INFO L78 Accepts]: Start accepts. Automaton has 2993 states and 4428 transitions. Word has length 71 [2020-10-14 08:45:56,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:45:56,476 INFO L479 AbstractCegarLoop]: Abstraction has 2993 states and 4428 transitions. [2020-10-14 08:45:56,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:45:56,477 INFO L276 IsEmpty]: Start isEmpty. Operand 2993 states and 4428 transitions. [2020-10-14 08:45:56,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 08:45:56,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:45:56,478 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] [2020-10-14 08:45:56,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:45:56,479 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:45:56,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:45:56,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1322341382, now seen corresponding path program 1 times [2020-10-14 08:45:56,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:45:56,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335196869] [2020-10-14 08:45:56,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:45:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:56,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:56,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:56,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:56,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:56,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:57,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:57,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:57,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:57,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:57,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:58,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:58,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:59,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:00,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:01,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:01,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:01,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 08:46:01,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:46:01,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 08:46:01,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:01,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:01,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:46:01,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-14 08:46:01,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 08:46:01,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:01,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:46:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:01,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:01,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:01,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:46:01,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:46:01,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 08:46:01,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:01,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:01,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:46:01,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:46:01,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:46:01,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:01,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:46:01,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335196869] [2020-10-14 08:46:01,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:46:01,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:46:01,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980149094] [2020-10-14 08:46:01,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:46:01,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:46:01,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:46:01,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:46:01,627 INFO L87 Difference]: Start difference. First operand 2993 states and 4428 transitions. Second operand 4 states. [2020-10-14 08:46:02,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:46:02,475 INFO L93 Difference]: Finished difference Result 6909 states and 10246 transitions. [2020-10-14 08:46:02,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:46:02,476 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-10-14 08:46:02,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:46:02,492 INFO L225 Difference]: With dead ends: 6909 [2020-10-14 08:46:02,492 INFO L226 Difference]: Without dead ends: 4063 [2020-10-14 08:46:02,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:46:02,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4063 states. [2020-10-14 08:46:02,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4063 to 4061. [2020-10-14 08:46:02,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4061 states. [2020-10-14 08:46:02,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4061 states to 4061 states and 5980 transitions. [2020-10-14 08:46:02,821 INFO L78 Accepts]: Start accepts. Automaton has 4061 states and 5980 transitions. Word has length 71 [2020-10-14 08:46:02,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:46:02,821 INFO L479 AbstractCegarLoop]: Abstraction has 4061 states and 5980 transitions. [2020-10-14 08:46:02,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:46:02,821 INFO L276 IsEmpty]: Start isEmpty. Operand 4061 states and 5980 transitions. [2020-10-14 08:46:02,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 08:46:02,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:46:02,823 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] [2020-10-14 08:46:02,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:46:02,823 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:46:02,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:46:02,823 INFO L82 PathProgramCache]: Analyzing trace with hash 546936265, now seen corresponding path program 1 times [2020-10-14 08:46:02,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:46:02,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116109272] [2020-10-14 08:46:02,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:46:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:02,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:02,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:02,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:03,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:03,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:03,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:03,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:03,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:03,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:03,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:03,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:04,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:04,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:04,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:04,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:05,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:07,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:07,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 08:46:07,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:46:07,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:46:07,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:07,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:07,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 08:46:07,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:46:07,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 08:46:07,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:46:07,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:46:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:07,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:07,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:07,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:46:07,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:46:07,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:46:07,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:07,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:07,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:46:07,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:46:07,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:46:07,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:08,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:46:08,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116109272] [2020-10-14 08:46:08,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:46:08,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 08:46:08,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574823891] [2020-10-14 08:46:08,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 08:46:08,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:46:08,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 08:46:08,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 08:46:08,014 INFO L87 Difference]: Start difference. First operand 4061 states and 5980 transitions. Second operand 7 states. [2020-10-14 08:46:08,166 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-14 08:46:09,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:46:09,107 INFO L93 Difference]: Finished difference Result 9861 states and 14525 transitions. [2020-10-14 08:46:09,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:46:09,108 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 71 [2020-10-14 08:46:09,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:46:09,147 INFO L225 Difference]: With dead ends: 9861 [2020-10-14 08:46:09,148 INFO L226 Difference]: Without dead ends: 8451 [2020-10-14 08:46:09,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-14 08:46:09,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8451 states. [2020-10-14 08:46:09,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8451 to 5152. [2020-10-14 08:46:09,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5152 states. [2020-10-14 08:46:09,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5152 states to 5152 states and 7592 transitions. [2020-10-14 08:46:09,619 INFO L78 Accepts]: Start accepts. Automaton has 5152 states and 7592 transitions. Word has length 71 [2020-10-14 08:46:09,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:46:09,619 INFO L479 AbstractCegarLoop]: Abstraction has 5152 states and 7592 transitions. [2020-10-14 08:46:09,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 08:46:09,620 INFO L276 IsEmpty]: Start isEmpty. Operand 5152 states and 7592 transitions. [2020-10-14 08:46:09,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 08:46:09,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:46:09,621 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] [2020-10-14 08:46:09,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:46:09,621 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:46:09,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:46:09,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1092849331, now seen corresponding path program 1 times [2020-10-14 08:46:09,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:46:09,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513164696] [2020-10-14 08:46:09,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:46:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:09,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:09,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:09,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:09,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:09,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:10,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:10,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:10,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:10,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:11,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:11,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:11,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:11,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:12,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:14,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:14,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 08:46:14,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:46:14,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:46:14,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:14,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:14,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:46:14,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:46:14,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 08:46:14,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:14,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:46:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:14,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:14,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:14,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:46:14,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:46:14,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:46:14,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:14,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:14,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:46:14,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:46:14,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:46:14,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:14,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:46:14,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513164696] [2020-10-14 08:46:14,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:46:14,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:46:14,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146250072] [2020-10-14 08:46:14,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:46:14,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:46:14,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:46:14,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:46:14,917 INFO L87 Difference]: Start difference. First operand 5152 states and 7592 transitions. Second operand 9 states. [2020-10-14 08:46:16,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:46:16,692 INFO L93 Difference]: Finished difference Result 15402 states and 22626 transitions. [2020-10-14 08:46:16,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 08:46:16,693 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-14 08:46:16,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:46:16,731 INFO L225 Difference]: With dead ends: 15402 [2020-10-14 08:46:16,731 INFO L226 Difference]: Without dead ends: 10407 [2020-10-14 08:46:16,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-14 08:46:16,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10407 states. [2020-10-14 08:46:17,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10407 to 5152. [2020-10-14 08:46:17,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5152 states. [2020-10-14 08:46:17,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5152 states to 5152 states and 7583 transitions. [2020-10-14 08:46:17,219 INFO L78 Accepts]: Start accepts. Automaton has 5152 states and 7583 transitions. Word has length 72 [2020-10-14 08:46:17,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:46:17,220 INFO L479 AbstractCegarLoop]: Abstraction has 5152 states and 7583 transitions. [2020-10-14 08:46:17,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:46:17,220 INFO L276 IsEmpty]: Start isEmpty. Operand 5152 states and 7583 transitions. [2020-10-14 08:46:17,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 08:46:17,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:46:17,222 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] [2020-10-14 08:46:17,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:46:17,222 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:46:17,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:46:17,222 INFO L82 PathProgramCache]: Analyzing trace with hash 719547168, now seen corresponding path program 1 times [2020-10-14 08:46:17,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:46:17,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256016333] [2020-10-14 08:46:17,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:46:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:17,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:17,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:17,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:17,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:17,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:17,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:17,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:18,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:18,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:18,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:19,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:19,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:19,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:20,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:21,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:22,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:22,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 08:46:22,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:46:22,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:46:22,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:22,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:22,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 08:46:22,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:46:22,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 08:46:22,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:22,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:46:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:22,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:22,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:22,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:46:22,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:46:22,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:46:22,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:22,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:22,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:46:22,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:46:22,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:46:22,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:22,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:46:22,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256016333] [2020-10-14 08:46:22,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:46:22,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:46:22,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767715489] [2020-10-14 08:46:22,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 08:46:22,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:46:22,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 08:46:22,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:46:22,535 INFO L87 Difference]: Start difference. First operand 5152 states and 7583 transitions. Second operand 11 states. [2020-10-14 08:46:22,697 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-14 08:46:24,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:46:24,555 INFO L93 Difference]: Finished difference Result 15453 states and 22683 transitions. [2020-10-14 08:46:24,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 08:46:24,555 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 73 [2020-10-14 08:46:24,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:46:24,586 INFO L225 Difference]: With dead ends: 15453 [2020-10-14 08:46:24,587 INFO L226 Difference]: Without dead ends: 10422 [2020-10-14 08:46:24,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-10-14 08:46:24,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10422 states. [2020-10-14 08:46:25,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10422 to 5152. [2020-10-14 08:46:25,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5152 states. [2020-10-14 08:46:25,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5152 states to 5152 states and 7577 transitions. [2020-10-14 08:46:25,185 INFO L78 Accepts]: Start accepts. Automaton has 5152 states and 7577 transitions. Word has length 73 [2020-10-14 08:46:25,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:46:25,186 INFO L479 AbstractCegarLoop]: Abstraction has 5152 states and 7577 transitions. [2020-10-14 08:46:25,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 08:46:25,186 INFO L276 IsEmpty]: Start isEmpty. Operand 5152 states and 7577 transitions. [2020-10-14 08:46:25,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 08:46:25,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:46:25,188 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] [2020-10-14 08:46:25,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 08:46:25,188 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:46:25,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:46:25,188 INFO L82 PathProgramCache]: Analyzing trace with hash 965416182, now seen corresponding path program 1 times [2020-10-14 08:46:25,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:46:25,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518834324] [2020-10-14 08:46:25,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:46:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:25,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:25,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:25,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:25,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:25,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:25,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:26,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:26,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:28,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:30,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:30,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 08:46:30,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:46:30,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:46:30,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:30,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:30,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:46:30,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:46:30,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 08:46:30,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:30,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:46:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:30,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:30,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:30,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:46:30,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:46:30,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 08:46:30,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:30,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:30,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:46:30,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:46:30,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:46:30,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:30,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:46:30,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518834324] [2020-10-14 08:46:30,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:46:30,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:46:30,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667676434] [2020-10-14 08:46:30,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:46:30,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:46:30,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:46:30,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:46:30,590 INFO L87 Difference]: Start difference. First operand 5152 states and 7577 transitions. Second operand 10 states. [2020-10-14 08:46:30,743 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-14 08:46:32,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:46:32,675 INFO L93 Difference]: Finished difference Result 12667 states and 18680 transitions. [2020-10-14 08:46:32,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 08:46:32,676 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 73 [2020-10-14 08:46:32,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:46:32,698 INFO L225 Difference]: With dead ends: 12667 [2020-10-14 08:46:32,698 INFO L226 Difference]: Without dead ends: 10157 [2020-10-14 08:46:32,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-10-14 08:46:32,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10157 states. [2020-10-14 08:46:33,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10157 to 5132. [2020-10-14 08:46:33,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5132 states. [2020-10-14 08:46:33,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5132 states to 5132 states and 7545 transitions. [2020-10-14 08:46:33,564 INFO L78 Accepts]: Start accepts. Automaton has 5132 states and 7545 transitions. Word has length 73 [2020-10-14 08:46:33,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:46:33,564 INFO L479 AbstractCegarLoop]: Abstraction has 5132 states and 7545 transitions. [2020-10-14 08:46:33,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:46:33,564 INFO L276 IsEmpty]: Start isEmpty. Operand 5132 states and 7545 transitions. [2020-10-14 08:46:33,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 08:46:33,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:46:33,565 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] [2020-10-14 08:46:33,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 08:46:33,566 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:46:33,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:46:33,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1298688794, now seen corresponding path program 1 times [2020-10-14 08:46:33,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:46:33,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270402150] [2020-10-14 08:46:33,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:46:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:33,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:33,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:33,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:33,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:33,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:33,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:34,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:34,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:34,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:35,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:35,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:35,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:36,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:36,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:36,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:36,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:37,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:37,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:38,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:38,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:38,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:38,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:38,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 08:46:38,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 08:46:38,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:46:38,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:38,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:38,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:46:38,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:46:38,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 08:46:38,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:38,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:46:38,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:38,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:38,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:38,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:46:38,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:46:38,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:46:38,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:38,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:38,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:46:38,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:46:38,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:46:38,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:38,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:46:38,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270402150] [2020-10-14 08:46:38,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:46:38,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:46:38,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018358420] [2020-10-14 08:46:38,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:46:38,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:46:38,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:46:38,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:46:38,881 INFO L87 Difference]: Start difference. First operand 5132 states and 7545 transitions. Second operand 10 states. [2020-10-14 08:46:41,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:46:41,383 INFO L93 Difference]: Finished difference Result 12643 states and 18642 transitions. [2020-10-14 08:46:41,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 08:46:41,384 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 74 [2020-10-14 08:46:41,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:46:41,406 INFO L225 Difference]: With dead ends: 12643 [2020-10-14 08:46:41,407 INFO L226 Difference]: Without dead ends: 10157 [2020-10-14 08:46:41,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-14 08:46:41,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10157 states. [2020-10-14 08:46:42,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10157 to 5129. [2020-10-14 08:46:42,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5129 states. [2020-10-14 08:46:42,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 7536 transitions. [2020-10-14 08:46:42,332 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 7536 transitions. Word has length 74 [2020-10-14 08:46:42,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:46:42,332 INFO L479 AbstractCegarLoop]: Abstraction has 5129 states and 7536 transitions. [2020-10-14 08:46:42,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:46:42,332 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 7536 transitions. [2020-10-14 08:46:42,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 08:46:42,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:46:42,334 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] [2020-10-14 08:46:42,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 08:46:42,334 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:46:42,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:46:42,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1244920701, now seen corresponding path program 1 times [2020-10-14 08:46:42,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:46:42,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919394990] [2020-10-14 08:46:42,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:46:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:42,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:42,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:42,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:42,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:42,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:42,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:43,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:44,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:44,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:47,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:47,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 08:46:47,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:46:47,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:46:47,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:47,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:47,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:46:47,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 08:46:47,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 08:46:47,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:47,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:46:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:47,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:47,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:47,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:46:47,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:46:47,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 08:46:47,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:47,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:47,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:46:47,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:46:47,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:46:47,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:47,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:46:47,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919394990] [2020-10-14 08:46:47,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:46:47,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:46:47,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700823000] [2020-10-14 08:46:47,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:46:47,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:46:47,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:46:47,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:46:47,520 INFO L87 Difference]: Start difference. First operand 5129 states and 7536 transitions. Second operand 5 states. [2020-10-14 08:46:47,665 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-14 08:46:49,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:46:49,016 INFO L93 Difference]: Finished difference Result 11936 states and 17603 transitions. [2020-10-14 08:46:49,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:46:49,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-14 08:46:49,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:46:49,025 INFO L225 Difference]: With dead ends: 11936 [2020-10-14 08:46:49,026 INFO L226 Difference]: Without dead ends: 6950 [2020-10-14 08:46:49,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 08:46:49,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6950 states. [2020-10-14 08:46:50,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6950 to 6906. [2020-10-14 08:46:50,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6906 states. [2020-10-14 08:46:50,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6906 states to 6906 states and 10091 transitions. [2020-10-14 08:46:50,110 INFO L78 Accepts]: Start accepts. Automaton has 6906 states and 10091 transitions. Word has length 74 [2020-10-14 08:46:50,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:46:50,111 INFO L479 AbstractCegarLoop]: Abstraction has 6906 states and 10091 transitions. [2020-10-14 08:46:50,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:46:50,111 INFO L276 IsEmpty]: Start isEmpty. Operand 6906 states and 10091 transitions. [2020-10-14 08:46:50,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 08:46:50,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:46:50,112 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] [2020-10-14 08:46:50,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 08:46:50,113 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:46:50,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:46:50,113 INFO L82 PathProgramCache]: Analyzing trace with hash 2107252161, now seen corresponding path program 1 times [2020-10-14 08:46:50,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:46:50,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842848564] [2020-10-14 08:46:50,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:46:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:50,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:50,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:50,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:50,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:50,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:50,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:54,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:55,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:55,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 08:46:55,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:46:55,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:46:55,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:55,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:55,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:46:55,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-14 08:46:55,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 08:46:55,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:55,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:46:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:55,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:55,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:55,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:46:55,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:46:55,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 08:46:55,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:55,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:55,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:46:55,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:46:55,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:46:55,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:55,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:46:55,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842848564] [2020-10-14 08:46:55,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:46:55,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:46:55,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139772015] [2020-10-14 08:46:55,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:46:55,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:46:55,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:46:55,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:46:55,283 INFO L87 Difference]: Start difference. First operand 6906 states and 10091 transitions. Second operand 5 states. [2020-10-14 08:46:57,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:46:57,186 INFO L93 Difference]: Finished difference Result 10680 states and 15564 transitions. [2020-10-14 08:46:57,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 08:46:57,187 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-14 08:46:57,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:46:57,198 INFO L225 Difference]: With dead ends: 10680 [2020-10-14 08:46:57,198 INFO L226 Difference]: Without dead ends: 10678 [2020-10-14 08:46:57,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:46:57,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10678 states. [2020-10-14 08:46:58,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10678 to 6938. [2020-10-14 08:46:58,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6938 states. [2020-10-14 08:46:58,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6938 states to 6938 states and 10067 transitions. [2020-10-14 08:46:58,324 INFO L78 Accepts]: Start accepts. Automaton has 6938 states and 10067 transitions. Word has length 74 [2020-10-14 08:46:58,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:46:58,324 INFO L479 AbstractCegarLoop]: Abstraction has 6938 states and 10067 transitions. [2020-10-14 08:46:58,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:46:58,324 INFO L276 IsEmpty]: Start isEmpty. Operand 6938 states and 10067 transitions. [2020-10-14 08:46:58,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-14 08:46:58,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:46:58,325 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] [2020-10-14 08:46:58,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 08:46:58,325 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:46:58,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:46:58,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1700876253, now seen corresponding path program 1 times [2020-10-14 08:46:58,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:46:58,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378315537] [2020-10-14 08:46:58,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:46:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:58,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:58,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:58,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:58,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:58,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:58,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:58,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:58,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:59,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:59,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:00,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:00,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:00,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:03,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:03,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 08:47:03,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:47:03,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:47:03,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:03,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:03,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 08:47:03,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:47:03,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 08:47:03,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:03,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:47:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:03,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:03,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:03,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:47:03,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:47:03,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:47:03,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:03,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:03,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:47:03,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:47:03,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:47:03,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:03,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:47:03,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378315537] [2020-10-14 08:47:03,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:47:03,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:47:03,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532168423] [2020-10-14 08:47:03,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 08:47:03,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:47:03,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 08:47:03,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:47:03,614 INFO L87 Difference]: Start difference. First operand 6938 states and 10067 transitions. Second operand 11 states. [2020-10-14 08:47:03,778 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-14 08:47:07,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:47:07,099 INFO L93 Difference]: Finished difference Result 22261 states and 32329 transitions. [2020-10-14 08:47:07,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 08:47:07,099 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 75 [2020-10-14 08:47:07,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:47:07,117 INFO L225 Difference]: With dead ends: 22261 [2020-10-14 08:47:07,117 INFO L226 Difference]: Without dead ends: 15430 [2020-10-14 08:47:07,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2020-10-14 08:47:07,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15430 states. [2020-10-14 08:47:08,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15430 to 6938. [2020-10-14 08:47:08,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6938 states. [2020-10-14 08:47:08,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6938 states to 6938 states and 10064 transitions. [2020-10-14 08:47:08,311 INFO L78 Accepts]: Start accepts. Automaton has 6938 states and 10064 transitions. Word has length 75 [2020-10-14 08:47:08,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:47:08,311 INFO L479 AbstractCegarLoop]: Abstraction has 6938 states and 10064 transitions. [2020-10-14 08:47:08,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 08:47:08,311 INFO L276 IsEmpty]: Start isEmpty. Operand 6938 states and 10064 transitions. [2020-10-14 08:47:08,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-14 08:47:08,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:47:08,312 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] [2020-10-14 08:47:08,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 08:47:08,312 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:47:08,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:47:08,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1215304404, now seen corresponding path program 1 times [2020-10-14 08:47:08,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:47:08,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826995925] [2020-10-14 08:47:08,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:47:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:08,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:08,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:08,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:08,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:09,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:09,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:09,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:09,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:10,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:10,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 08:47:10,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:47:10,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2428 [2020-10-14 08:47:10,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:10,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:10,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:47:10,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:47:10,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 08:47:10,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:11,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:47:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:11,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:11,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:11,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:47:11,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:47:11,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:47:11,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:11,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:11,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:47:11,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:47:11,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:47:11,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:11,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:47:11,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826995925] [2020-10-14 08:47:11,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:47:11,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:47:11,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827885080] [2020-10-14 08:47:11,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:47:11,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:47:11,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:47:11,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:47:11,145 INFO L87 Difference]: Start difference. First operand 6938 states and 10064 transitions. Second operand 10 states. [2020-10-14 08:47:11,509 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 126 [2020-10-14 08:47:14,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:47:14,078 INFO L93 Difference]: Finished difference Result 13670 states and 19868 transitions. [2020-10-14 08:47:14,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 08:47:14,079 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-10-14 08:47:14,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:47:14,089 INFO L225 Difference]: With dead ends: 13670 [2020-10-14 08:47:14,089 INFO L226 Difference]: Without dead ends: 10296 [2020-10-14 08:47:14,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-10-14 08:47:14,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10296 states. [2020-10-14 08:47:15,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10296 to 6902. [2020-10-14 08:47:15,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6902 states. [2020-10-14 08:47:15,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6902 states to 6902 states and 10019 transitions. [2020-10-14 08:47:15,306 INFO L78 Accepts]: Start accepts. Automaton has 6902 states and 10019 transitions. Word has length 75 [2020-10-14 08:47:15,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:47:15,307 INFO L479 AbstractCegarLoop]: Abstraction has 6902 states and 10019 transitions. [2020-10-14 08:47:15,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:47:15,307 INFO L276 IsEmpty]: Start isEmpty. Operand 6902 states and 10019 transitions. [2020-10-14 08:47:15,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 08:47:15,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:47:15,307 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] [2020-10-14 08:47:15,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 08:47:15,308 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:47:15,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:47:15,308 INFO L82 PathProgramCache]: Analyzing trace with hash 866891917, now seen corresponding path program 1 times [2020-10-14 08:47:15,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:47:15,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293886650] [2020-10-14 08:47:15,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:47:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:15,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:15,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:15,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:15,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:16,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:16,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 08:47:16,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:47:16,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1156 [2020-10-14 08:47:16,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:16,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:16,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:47:16,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:47:16,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 08:47:16,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:16,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:47:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:16,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:16,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:16,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:47:16,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:47:16,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:47:16,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:16,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:16,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:47:16,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:47:16,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:47:16,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:16,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:47:16,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293886650] [2020-10-14 08:47:16,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:47:16,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:47:16,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646301049] [2020-10-14 08:47:16,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:47:16,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:47:16,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:47:16,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:47:16,797 INFO L87 Difference]: Start difference. First operand 6902 states and 10019 transitions. Second operand 9 states. [2020-10-14 08:47:19,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:47:19,876 INFO L93 Difference]: Finished difference Result 11967 states and 17398 transitions. [2020-10-14 08:47:19,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:47:19,877 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 76 [2020-10-14 08:47:19,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:47:19,885 INFO L225 Difference]: With dead ends: 11967 [2020-10-14 08:47:19,885 INFO L226 Difference]: Without dead ends: 10194 [2020-10-14 08:47:19,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-14 08:47:19,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10194 states. [2020-10-14 08:47:21,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10194 to 6800. [2020-10-14 08:47:21,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6800 states. [2020-10-14 08:47:21,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6800 states to 6800 states and 9875 transitions. [2020-10-14 08:47:21,254 INFO L78 Accepts]: Start accepts. Automaton has 6800 states and 9875 transitions. Word has length 76 [2020-10-14 08:47:21,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:47:21,254 INFO L479 AbstractCegarLoop]: Abstraction has 6800 states and 9875 transitions. [2020-10-14 08:47:21,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:47:21,254 INFO L276 IsEmpty]: Start isEmpty. Operand 6800 states and 9875 transitions. [2020-10-14 08:47:21,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 08:47:21,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:47:21,258 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 08:47:21,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 08:47:21,259 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:47:21,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:47:21,259 INFO L82 PathProgramCache]: Analyzing trace with hash 400650785, now seen corresponding path program 1 times [2020-10-14 08:47:21,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:47:21,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238773936] [2020-10-14 08:47:21,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:47:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:21,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:21,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:21,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:21,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:21,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:21,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:22,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:24,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:24,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:26,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:26,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 08:47:26,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:47:26,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:47:26,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:26,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:26,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:47:26,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 08:47:26,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 08:47:26,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:26,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:47:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:26,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:26,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:26,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:47:26,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:47:26,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 08:47:26,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:26,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:26,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:47:26,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:47:26,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:47:26,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:26,435 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:47:26,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238773936] [2020-10-14 08:47:26,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:47:26,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:47:26,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429666273] [2020-10-14 08:47:26,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:47:26,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:47:26,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:47:26,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:47:26,437 INFO L87 Difference]: Start difference. First operand 6800 states and 9875 transitions. Second operand 4 states. [2020-10-14 08:47:26,560 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-14 08:47:29,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:47:29,626 INFO L93 Difference]: Finished difference Result 19612 states and 28365 transitions. [2020-10-14 08:47:29,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:47:29,627 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-14 08:47:29,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:47:29,639 INFO L225 Difference]: With dead ends: 19612 [2020-10-14 08:47:29,639 INFO L226 Difference]: Without dead ends: 12902 [2020-10-14 08:47:29,646 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 [2020-10-14 08:47:29,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12902 states. [2020-10-14 08:47:32,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12902 to 12368. [2020-10-14 08:47:32,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12368 states. [2020-10-14 08:47:32,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12368 states to 12368 states and 17751 transitions. [2020-10-14 08:47:32,280 INFO L78 Accepts]: Start accepts. Automaton has 12368 states and 17751 transitions. Word has length 100 [2020-10-14 08:47:32,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:47:32,280 INFO L479 AbstractCegarLoop]: Abstraction has 12368 states and 17751 transitions. [2020-10-14 08:47:32,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:47:32,280 INFO L276 IsEmpty]: Start isEmpty. Operand 12368 states and 17751 transitions. [2020-10-14 08:47:32,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 08:47:32,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:47:32,283 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-10-14 08:47:32,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 08:47:32,284 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:47:32,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:47:32,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1430302448, now seen corresponding path program 1 times [2020-10-14 08:47:32,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:47:32,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570537342] [2020-10-14 08:47:32,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:47:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:32,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:32,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:32,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:32,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:32,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:32,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:32,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:32,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:32,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:32,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:33,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:33,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:33,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:33,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:33,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:34,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:34,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:34,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:34,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:34,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:35,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:35,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:35,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:37,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:37,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 08:47:37,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-14 08:47:37,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 08:47:37,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:37,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:37,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:47:37,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-14 08:47:37,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 08:47:37,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:37,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:47:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:37,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:37,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:37,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:47:37,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:47:37,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 08:47:37,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:37,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:37,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:47:37,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:47:37,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:47:37,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:37,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:47:37,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570537342] [2020-10-14 08:47:37,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:47:37,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:47:37,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704414113] [2020-10-14 08:47:37,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:47:37,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:47:37,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:47:37,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:47:37,473 INFO L87 Difference]: Start difference. First operand 12368 states and 17751 transitions. Second operand 4 states. [2020-10-14 08:47:37,599 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-14 08:47:43,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:47:43,256 INFO L93 Difference]: Finished difference Result 35708 states and 50929 transitions. [2020-10-14 08:47:43,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:47:43,256 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-10-14 08:47:43,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:47:43,279 INFO L225 Difference]: With dead ends: 35708 [2020-10-14 08:47:43,279 INFO L226 Difference]: Without dead ends: 23430 [2020-10-14 08:47:43,292 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 [2020-10-14 08:47:43,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23430 states. [2020-10-14 08:47:48,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23430 to 22212. [2020-10-14 08:47:48,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22212 states. [2020-10-14 08:47:48,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22212 states to 22212 states and 31451 transitions. [2020-10-14 08:47:48,146 INFO L78 Accepts]: Start accepts. Automaton has 22212 states and 31451 transitions. Word has length 101 [2020-10-14 08:47:48,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:47:48,146 INFO L479 AbstractCegarLoop]: Abstraction has 22212 states and 31451 transitions. [2020-10-14 08:47:48,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:47:48,146 INFO L276 IsEmpty]: Start isEmpty. Operand 22212 states and 31451 transitions. [2020-10-14 08:47:48,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 08:47:48,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:47:48,149 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-10-14 08:47:48,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 08:47:48,149 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:47:48,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:47:48,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1902892181, now seen corresponding path program 1 times [2020-10-14 08:47:48,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:47:48,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974060834] [2020-10-14 08:47:48,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:47:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:48,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:48,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:48,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:48,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:48,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:48,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:49,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:49,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:49,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:50,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:50,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:51,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:52,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:52,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:52,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:52,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:52,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:52,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:52,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:52,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:53,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:53,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 08:47:53,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-14 08:47:53,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:47:53,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:53,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:53,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:47:53,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-14 08:47:53,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 08:47:53,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:53,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:47:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:53,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:53,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:53,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:47:53,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:47:53,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:47:53,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:53,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:53,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:47:53,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:47:53,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:47:53,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:53,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:47:53,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974060834] [2020-10-14 08:47:53,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:47:53,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:47:53,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690347368] [2020-10-14 08:47:53,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:47:53,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:47:53,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:47:53,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:47:53,336 INFO L87 Difference]: Start difference. First operand 22212 states and 31451 transitions. Second operand 4 states. [2020-10-14 08:47:53,472 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-14 08:48:03,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:48:03,237 INFO L93 Difference]: Finished difference Result 64024 states and 89901 transitions. [2020-10-14 08:48:03,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:48:03,237 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-10-14 08:48:03,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:48:03,279 INFO L225 Difference]: With dead ends: 64024 [2020-10-14 08:48:03,279 INFO L226 Difference]: Without dead ends: 41902 [2020-10-14 08:48:03,298 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 [2020-10-14 08:48:03,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41902 states. [2020-10-14 08:48:12,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41902 to 39468. [2020-10-14 08:48:12,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39468 states. [2020-10-14 08:48:12,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39468 states to 39468 states and 54899 transitions. [2020-10-14 08:48:12,445 INFO L78 Accepts]: Start accepts. Automaton has 39468 states and 54899 transitions. Word has length 102 [2020-10-14 08:48:12,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:48:12,445 INFO L479 AbstractCegarLoop]: Abstraction has 39468 states and 54899 transitions. [2020-10-14 08:48:12,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:48:12,445 INFO L276 IsEmpty]: Start isEmpty. Operand 39468 states and 54899 transitions. [2020-10-14 08:48:12,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 08:48:12,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:48:12,447 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2020-10-14 08:48:12,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 08:48:12,447 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:48:12,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:48:12,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1153380726, now seen corresponding path program 1 times [2020-10-14 08:48:12,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:48:12,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7286799] [2020-10-14 08:48:12,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:48:12,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:48:12,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:12,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:12,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:12,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:13,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:13,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:13,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:13,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:13,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:14,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:16,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:17,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:17,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:17,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:48:17,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 08:48:17,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:48:17,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:48:17,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:48:17,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:48:17,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:48:17,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 08:48:17,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 08:48:17,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:48:17,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:48:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:48:17,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:17,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:48:17,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:48:17,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:48:17,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:48:17,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:48:17,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:48:17,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:48:17,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:48:17,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:48:17,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:48:17,636 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:48:17,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7286799] [2020-10-14 08:48:17,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:48:17,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:48:17,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121988070] [2020-10-14 08:48:17,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:48:17,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:48:17,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:48:17,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:48:17,639 INFO L87 Difference]: Start difference. First operand 39468 states and 54899 transitions. Second operand 4 states. [2020-10-14 08:48:17,769 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-14 08:48:31,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:48:31,771 INFO L93 Difference]: Finished difference Result 86114 states and 120399 transitions. [2020-10-14 08:48:31,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:48:31,772 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-14 08:48:31,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:48:31,832 INFO L225 Difference]: With dead ends: 86114 [2020-10-14 08:48:31,832 INFO L226 Difference]: Without dead ends: 56508 [2020-10-14 08:48:31,857 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 [2020-10-14 08:48:31,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56508 states. [2020-10-14 08:48:45,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56508 to 53468. [2020-10-14 08:48:45,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53468 states. [2020-10-14 08:48:45,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53468 states to 53468 states and 73955 transitions. [2020-10-14 08:48:45,550 INFO L78 Accepts]: Start accepts. Automaton has 53468 states and 73955 transitions. Word has length 103 [2020-10-14 08:48:45,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:48:45,550 INFO L479 AbstractCegarLoop]: Abstraction has 53468 states and 73955 transitions. [2020-10-14 08:48:45,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:48:45,550 INFO L276 IsEmpty]: Start isEmpty. Operand 53468 states and 73955 transitions. [2020-10-14 08:48:45,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-14 08:48:45,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:48:45,556 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:48:45,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 08:48:45,556 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:48:45,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:48:45,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1672832933, now seen corresponding path program 1 times [2020-10-14 08:48:45,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:48:45,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965335715] [2020-10-14 08:48:45,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:48:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:48:45,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:45,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:45,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:45,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:46,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:46,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:46,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:46,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:46,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:47,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:47,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:47,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:48,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:48,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:48,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:48,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:49,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:49,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:49,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:49,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:49,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:49,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:50,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:48:50,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 08:48:50,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 08:48:50,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:48:50,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:48:50,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:48:50,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:48:50,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-14 08:48:50,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 08:48:50,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:48:50,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:48:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:48:50,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:50,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:48:50,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:48:50,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:48:50,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 08:48:50,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:48:50,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:48:50,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:48:50,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:48:50,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:48:50,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:48:50,739 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:48:50,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965335715] [2020-10-14 08:48:50,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:48:50,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:48:50,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026393998] [2020-10-14 08:48:50,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:48:50,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:48:50,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:48:50,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:48:50,741 INFO L87 Difference]: Start difference. First operand 53468 states and 73955 transitions. Second operand 4 states.