/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:10:58,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:10:58,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:10:58,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:10:58,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:10:58,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:10:58,880 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:10:58,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:10:58,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:10:58,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:10:58,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:10:58,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:10:58,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:10:58,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:10:58,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:10:58,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:10:58,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:10:58,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:10:58,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:10:58,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:10:58,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:10:58,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:10:58,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:10:58,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:10:58,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:10:58,925 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:10:58,925 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:10:58,926 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:10:58,926 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:10:58,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:10:58,928 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:10:58,929 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:10:58,930 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:10:58,930 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:10:58,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:10:58,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:10:58,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:10:58,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:10:58,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:10:58,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:10:58,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:10:58,935 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 19:10:58,976 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:10:58,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:10:58,978 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:10:58,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:10:58,979 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:10:58,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:10:58,979 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:10:58,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:10:58,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:10:58,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:10:58,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:10:58,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:10:58,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:10:58,982 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:10:58,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:10:58,982 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:10:58,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:10:58,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:10:58,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:10:58,983 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:10:58,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:10:58,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:10:58,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:10:58,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:10:58,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:10:58,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:10:58,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:10:58,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:10:58,985 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:10:58,985 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:10:59,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:10:59,258 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:10:59,262 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:10:59,263 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:10:59,263 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:10:59,264 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:10:59,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6341b4da8/b96c648a4eab4303a92ed319a311f1d1/FLAGf0ea3929e [2020-10-12 19:10:59,915 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:10:59,915 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:10:59,926 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6341b4da8/b96c648a4eab4303a92ed319a311f1d1/FLAGf0ea3929e [2020-10-12 19:11:00,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6341b4da8/b96c648a4eab4303a92ed319a311f1d1 [2020-10-12 19:11:00,175 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:11:00,177 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:11:00,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:11:00,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:11:00,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:11:00,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:11:00" (1/1) ... [2020-10-12 19:11:00,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b68df5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:00, skipping insertion in model container [2020-10-12 19:11:00,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:11:00" (1/1) ... [2020-10-12 19:11:00,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:11:00,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:11:00,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:11:00,785 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:11:00,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:11:00,957 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:11:00,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:00 WrapperNode [2020-10-12 19:11:00,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:11:00,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:11:00,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:11:00,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:11:00,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:00" (1/1) ... [2020-10-12 19:11:00,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:00" (1/1) ... [2020-10-12 19:11:00,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:00" (1/1) ... [2020-10-12 19:11:00,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:00" (1/1) ... [2020-10-12 19:11:01,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:00" (1/1) ... [2020-10-12 19:11:01,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:00" (1/1) ... [2020-10-12 19:11:01,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:00" (1/1) ... [2020-10-12 19:11:01,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:11:01,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:11:01,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:11:01,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:11:01,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:11:01,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:11:01,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:11:01,137 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:11:01,137 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:11:01,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:11:01,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:11:01,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:11:01,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:11:01,139 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:11:01,139 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:11:01,140 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:11:01,140 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:11:01,140 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:11:01,140 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:11:01,140 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:11:01,141 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:11:01,141 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:11:01,141 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:11:01,141 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:11:01,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:11:01,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:11:02,447 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:11:02,448 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:11:02,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:11:02 BoogieIcfgContainer [2020-10-12 19:11:02,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:11:02,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:11:02,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:11:02,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:11:02,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:11:00" (1/3) ... [2020-10-12 19:11:02,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c82f8ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:11:02, skipping insertion in model container [2020-10-12 19:11:02,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:00" (2/3) ... [2020-10-12 19:11:02,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c82f8ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:11:02, skipping insertion in model container [2020-10-12 19:11:02,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:11:02" (3/3) ... [2020-10-12 19:11:02,463 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:11:02,474 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:11:02,482 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:11:02,497 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:11:02,524 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:11:02,524 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:11:02,524 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:11:02,524 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:11:02,525 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:11:02,525 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:11:02,525 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:11:02,525 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:11:02,551 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states. [2020-10-12 19:11:02,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-12 19:11:02,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:11:02,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:11:02,568 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:11:02,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:11:02,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1212431174, now seen corresponding path program 1 times [2020-10-12 19:11:02,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:11:02,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385803975] [2020-10-12 19:11:02,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:11:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:03,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:03,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:03,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:03,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:03,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:04,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:04,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:04,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:04,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:05,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:05,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:08,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:08,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-12 19:11:08,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:11:08,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-12 19:11:08,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:08,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:11:08,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:11:08,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 19:11:08,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:11:08,540 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:11:08,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:11:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:08,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:08,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:08,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:11:08,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:11:08,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:11:08,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:08,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:11:08,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:11:08,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:11:08,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:08,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:11:08,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385803975] [2020-10-12 19:11:08,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:11:08,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:11:08,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146496271] [2020-10-12 19:11:08,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:11:08,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:11:08,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:11:08,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:11:08,712 INFO L87 Difference]: Start difference. First operand 317 states. Second operand 5 states. [2020-10-12 19:11:11,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:11:11,647 INFO L93 Difference]: Finished difference Result 897 states and 1586 transitions. [2020-10-12 19:11:11,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:11:11,649 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-12 19:11:11,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:11:11,669 INFO L225 Difference]: With dead ends: 897 [2020-10-12 19:11:11,669 INFO L226 Difference]: Without dead ends: 593 [2020-10-12 19:11:11,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:11:11,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-10-12 19:11:11,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 591. [2020-10-12 19:11:11,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-10-12 19:11:11,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 853 transitions. [2020-10-12 19:11:11,790 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 853 transitions. Word has length 150 [2020-10-12 19:11:11,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:11:11,790 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 853 transitions. [2020-10-12 19:11:11,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:11:11,791 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 853 transitions. [2020-10-12 19:11:11,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-12 19:11:11,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:11:11,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:11:11,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:11:11,796 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:11:11,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:11:11,797 INFO L82 PathProgramCache]: Analyzing trace with hash 104210632, now seen corresponding path program 1 times [2020-10-12 19:11:11,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:11:11,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851715985] [2020-10-12 19:11:11,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:11:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:11,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:11,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:11,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:12,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:12,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:12,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:12,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:12,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:12,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:13,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:13,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:13,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:16,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:16,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-12 19:11:16,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:11:16,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:11:16,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:16,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:11:16,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:11:16,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 19:11:16,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:17,200 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:11:17,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:11:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:17,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:17,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:17,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:11:17,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:11:17,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:11:17,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:17,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:11:17,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:11:17,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:11:17,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:11:17,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:11:17,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851715985] [2020-10-12 19:11:17,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:11:17,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:11:17,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142385177] [2020-10-12 19:11:17,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:11:17,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:11:17,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:11:17,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:11:17,304 INFO L87 Difference]: Start difference. First operand 591 states and 853 transitions. Second operand 5 states. [2020-10-12 19:11:19,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:11:19,575 INFO L93 Difference]: Finished difference Result 1720 states and 2478 transitions. [2020-10-12 19:11:19,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:11:19,576 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-12 19:11:19,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:11:19,583 INFO L225 Difference]: With dead ends: 1720 [2020-10-12 19:11:19,583 INFO L226 Difference]: Without dead ends: 1142 [2020-10-12 19:11:19,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:11:19,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2020-10-12 19:11:19,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1140. [2020-10-12 19:11:19,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1140 states. [2020-10-12 19:11:19,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1628 transitions. [2020-10-12 19:11:19,650 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1628 transitions. Word has length 151 [2020-10-12 19:11:19,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:11:19,650 INFO L479 AbstractCegarLoop]: Abstraction has 1140 states and 1628 transitions. [2020-10-12 19:11:19,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:11:19,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1628 transitions. [2020-10-12 19:11:19,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-12 19:11:19,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:11:19,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:11:19,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:11:19,655 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:11:19,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:11:19,656 INFO L82 PathProgramCache]: Analyzing trace with hash -2019936644, now seen corresponding path program 1 times [2020-10-12 19:11:19,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:11:19,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442178053] [2020-10-12 19:11:19,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:11:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:19,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:19,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:19,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:19,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:19,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:20,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:20,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:20,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:20,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:20,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:23,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:23,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:24,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:24,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-12 19:11:24,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:11:24,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:11:24,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:24,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:11:24,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:11:24,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 19:11:24,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:25,002 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:11:25,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:11:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:25,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:25,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:25,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:11:25,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:11:25,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:11:25,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:25,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:11:25,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:11:25,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:11:25,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:25,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:11:25,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442178053] [2020-10-12 19:11:25,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:11:25,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:11:25,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122441400] [2020-10-12 19:11:25,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:11:25,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:11:25,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:11:25,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:11:25,072 INFO L87 Difference]: Start difference. First operand 1140 states and 1628 transitions. Second operand 5 states. [2020-10-12 19:11:27,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:11:27,427 INFO L93 Difference]: Finished difference Result 3282 states and 4667 transitions. [2020-10-12 19:11:27,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:11:27,427 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-12 19:11:27,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:11:27,438 INFO L225 Difference]: With dead ends: 3282 [2020-10-12 19:11:27,439 INFO L226 Difference]: Without dead ends: 2196 [2020-10-12 19:11:27,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:11:27,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2020-10-12 19:11:27,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 2194. [2020-10-12 19:11:27,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2194 states. [2020-10-12 19:11:27,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2194 states to 2194 states and 3091 transitions. [2020-10-12 19:11:27,547 INFO L78 Accepts]: Start accepts. Automaton has 2194 states and 3091 transitions. Word has length 152 [2020-10-12 19:11:27,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:11:27,547 INFO L479 AbstractCegarLoop]: Abstraction has 2194 states and 3091 transitions. [2020-10-12 19:11:27,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:11:27,548 INFO L276 IsEmpty]: Start isEmpty. Operand 2194 states and 3091 transitions. [2020-10-12 19:11:27,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-12 19:11:27,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:11:27,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:11:27,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:11:27,553 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:11:27,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:11:27,554 INFO L82 PathProgramCache]: Analyzing trace with hash -104411255, now seen corresponding path program 1 times [2020-10-12 19:11:27,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:11:27,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147225002] [2020-10-12 19:11:27,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:11:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:27,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:27,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:27,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:27,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:27,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:27,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:27,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:27,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:28,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:28,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:30,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:30,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:32,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:32,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-12 19:11:32,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:11:32,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:11:32,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:32,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:11:32,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 19:11:32,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 19:11:32,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:32,961 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:11:32,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:11:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:32,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:32,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:32,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:11:32,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:11:32,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:11:32,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:11:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:11:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:11:32,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:11:33,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:11:33,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147225002] [2020-10-12 19:11:33,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:11:33,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:11:33,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799381038] [2020-10-12 19:11:33,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:11:33,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:11:33,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:11:33,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:11:33,064 INFO L87 Difference]: Start difference. First operand 2194 states and 3091 transitions. Second operand 5 states. [2020-10-12 19:11:34,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:11:34,472 INFO L93 Difference]: Finished difference Result 3547 states and 5028 transitions. [2020-10-12 19:11:34,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:11:34,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-12 19:11:34,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:11:34,484 INFO L225 Difference]: With dead ends: 3547 [2020-10-12 19:11:34,484 INFO L226 Difference]: Without dead ends: 1705 [2020-10-12 19:11:34,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:11:34,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2020-10-12 19:11:34,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1701. [2020-10-12 19:11:34,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1701 states. [2020-10-12 19:11:34,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 2389 transitions. [2020-10-12 19:11:34,582 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 2389 transitions. Word has length 153 [2020-10-12 19:11:34,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:11:34,582 INFO L479 AbstractCegarLoop]: Abstraction has 1701 states and 2389 transitions. [2020-10-12 19:11:34,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:11:34,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 2389 transitions. [2020-10-12 19:11:34,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-12 19:11:34,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:11:34,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:11:34,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:11:34,587 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:11:34,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:11:34,588 INFO L82 PathProgramCache]: Analyzing trace with hash -2083219559, now seen corresponding path program 1 times [2020-10-12 19:11:34,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:11:34,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498796479] [2020-10-12 19:11:34,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:11:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:34,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:34,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:34,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:34,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:34,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:34,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:34,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:35,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:37,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:37,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:39,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:39,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:39,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-12 19:11:39,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:11:39,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-12 19:11:39,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:39,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:11:39,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:11:39,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-12 19:11:39,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:39,920 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:11:39,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:11:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:39,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:39,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:39,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:11:39,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:11:39,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 19:11:39,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:39,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:11:39,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:11:39,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:11:39,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:40,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:11:40,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498796479] [2020-10-12 19:11:40,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:11:40,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:11:40,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372537782] [2020-10-12 19:11:40,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 19:11:40,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:11:40,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 19:11:40,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:11:40,009 INFO L87 Difference]: Start difference. First operand 1701 states and 2389 transitions. Second operand 6 states. [2020-10-12 19:11:40,200 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-12 19:11:41,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:11:41,747 INFO L93 Difference]: Finished difference Result 3972 states and 5706 transitions. [2020-10-12 19:11:41,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:11:41,751 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2020-10-12 19:11:41,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:11:41,763 INFO L225 Difference]: With dead ends: 3972 [2020-10-12 19:11:41,764 INFO L226 Difference]: Without dead ends: 2723 [2020-10-12 19:11:41,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:11:41,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2020-10-12 19:11:41,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 2721. [2020-10-12 19:11:41,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2721 states. [2020-10-12 19:11:41,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 3867 transitions. [2020-10-12 19:11:41,902 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 3867 transitions. Word has length 160 [2020-10-12 19:11:41,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:11:41,902 INFO L479 AbstractCegarLoop]: Abstraction has 2721 states and 3867 transitions. [2020-10-12 19:11:41,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 19:11:41,903 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 3867 transitions. [2020-10-12 19:11:41,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-12 19:11:41,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:11:41,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:11:41,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:11:41,909 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:11:41,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:11:41,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1856464222, now seen corresponding path program 1 times [2020-10-12 19:11:41,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:11:41,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875055545] [2020-10-12 19:11:41,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:11:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:41,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:41,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:42,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:42,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:42,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:42,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:42,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:43,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:43,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:44,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:44,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:44,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:46,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:46,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:46,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:46,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:46,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-12 19:11:46,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:11:46,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:11:46,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:46,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:11:46,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:11:46,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 19:11:46,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:47,173 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:11:47,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:11:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:47,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:47,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:47,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:11:47,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:11:47,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:11:47,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:47,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:11:47,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:11:47,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:11:47,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:47,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:11:47,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875055545] [2020-10-12 19:11:47,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:11:47,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:11:47,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48429498] [2020-10-12 19:11:47,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:11:47,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:11:47,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:11:47,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:11:47,240 INFO L87 Difference]: Start difference. First operand 2721 states and 3867 transitions. Second operand 5 states. [2020-10-12 19:11:49,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:11:49,490 INFO L93 Difference]: Finished difference Result 7074 states and 10027 transitions. [2020-10-12 19:11:49,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:11:49,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-12 19:11:49,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:11:49,506 INFO L225 Difference]: With dead ends: 7074 [2020-10-12 19:11:49,507 INFO L226 Difference]: Without dead ends: 4433 [2020-10-12 19:11:49,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:11:49,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4433 states. [2020-10-12 19:11:49,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4433 to 4429. [2020-10-12 19:11:49,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4429 states. [2020-10-12 19:11:49,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4429 states to 4429 states and 6215 transitions. [2020-10-12 19:11:49,765 INFO L78 Accepts]: Start accepts. Automaton has 4429 states and 6215 transitions. Word has length 160 [2020-10-12 19:11:49,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:11:49,766 INFO L479 AbstractCegarLoop]: Abstraction has 4429 states and 6215 transitions. [2020-10-12 19:11:49,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:11:49,766 INFO L276 IsEmpty]: Start isEmpty. Operand 4429 states and 6215 transitions. [2020-10-12 19:11:49,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-12 19:11:49,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:11:49,776 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:11:49,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:11:49,776 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:11:49,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:11:49,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1055329430, now seen corresponding path program 1 times [2020-10-12 19:11:49,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:11:49,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442765968] [2020-10-12 19:11:49,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:11:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:49,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:49,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:49,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:49,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:49,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:50,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:50,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:50,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:50,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:50,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:51,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:51,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:52,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:52,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:54,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:54,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-12 19:11:54,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:11:54,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 19:11:54,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:54,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:11:54,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:11:54,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 19:11:54,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:55,071 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:11:55,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:11:55,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:55,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:55,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:55,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:11:55,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:11:55,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:11:55,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:55,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:11:55,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:11:55,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:11:55,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:55,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:11:55,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442765968] [2020-10-12 19:11:55,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:11:55,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:11:55,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806431791] [2020-10-12 19:11:55,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:11:55,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:11:55,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:11:55,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:11:55,135 INFO L87 Difference]: Start difference. First operand 4429 states and 6215 transitions. Second operand 5 states. [2020-10-12 19:11:57,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:11:57,900 INFO L93 Difference]: Finished difference Result 12626 states and 17698 transitions. [2020-10-12 19:11:57,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:11:57,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-12 19:11:57,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:11:57,936 INFO L225 Difference]: With dead ends: 12626 [2020-10-12 19:11:57,937 INFO L226 Difference]: Without dead ends: 8514 [2020-10-12 19:11:57,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:11:57,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8514 states. [2020-10-12 19:11:58,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8514 to 8512. [2020-10-12 19:11:58,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8512 states. [2020-10-12 19:11:58,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8512 states to 8512 states and 11776 transitions. [2020-10-12 19:11:58,445 INFO L78 Accepts]: Start accepts. Automaton has 8512 states and 11776 transitions. Word has length 161 [2020-10-12 19:11:58,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:11:58,446 INFO L479 AbstractCegarLoop]: Abstraction has 8512 states and 11776 transitions. [2020-10-12 19:11:58,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:11:58,446 INFO L276 IsEmpty]: Start isEmpty. Operand 8512 states and 11776 transitions. [2020-10-12 19:11:58,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-12 19:11:58,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:11:58,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:11:58,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:11:58,460 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:11:58,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:11:58,461 INFO L82 PathProgramCache]: Analyzing trace with hash -851633953, now seen corresponding path program 1 times [2020-10-12 19:11:58,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:11:58,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215199446] [2020-10-12 19:11:58,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:11:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:58,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:58,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:58,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:58,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:58,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:58,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:59,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:00,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:00,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:00,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:00,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:03,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:03,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-12 19:12:03,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:12:03,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 19:12:03,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:03,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:12:03,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:12:03,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 19:12:03,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:03,760 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:12:03,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:12:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:03,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:03,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:03,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:12:03,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:12:03,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:12:03,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:03,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:12:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:12:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:12:03,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:03,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:12:03,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215199446] [2020-10-12 19:12:03,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:12:03,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:12:03,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455498056] [2020-10-12 19:12:03,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:12:03,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:12:03,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:12:03,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:12:03,817 INFO L87 Difference]: Start difference. First operand 8512 states and 11776 transitions. Second operand 5 states. [2020-10-12 19:12:04,029 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-12 19:12:06,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:12:06,880 INFO L93 Difference]: Finished difference Result 14994 states and 20778 transitions. [2020-10-12 19:12:06,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:12:06,881 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-12 19:12:06,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:12:06,917 INFO L225 Difference]: With dead ends: 14994 [2020-10-12 19:12:06,918 INFO L226 Difference]: Without dead ends: 8572 [2020-10-12 19:12:06,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:12:06,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8572 states. [2020-10-12 19:12:07,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8572 to 8529. [2020-10-12 19:12:07,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8529 states. [2020-10-12 19:12:07,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8529 states to 8529 states and 11755 transitions. [2020-10-12 19:12:07,463 INFO L78 Accepts]: Start accepts. Automaton has 8529 states and 11755 transitions. Word has length 162 [2020-10-12 19:12:07,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:12:07,463 INFO L479 AbstractCegarLoop]: Abstraction has 8529 states and 11755 transitions. [2020-10-12 19:12:07,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:12:07,463 INFO L276 IsEmpty]: Start isEmpty. Operand 8529 states and 11755 transitions. [2020-10-12 19:12:07,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-12 19:12:07,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:12:07,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:12:07,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:12:07,475 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:12:07,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:12:07,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1481833884, now seen corresponding path program 1 times [2020-10-12 19:12:07,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:12:07,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424314374] [2020-10-12 19:12:07,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:12:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:07,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:07,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:07,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:07,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:07,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:07,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:12,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:12,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-12 19:12:12,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:12:12,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:12:12,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:12,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:12:12,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 19:12:12,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 19:12:12,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:12,735 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:12:12,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:12:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:12,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:12,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:12,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:12:12,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:12:12,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:12:12,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:12,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:12:12,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:12:12,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:12:12,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:12,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:12:12,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424314374] [2020-10-12 19:12:12,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:12:12,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:12:12,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399838190] [2020-10-12 19:12:12,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:12:12,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:12:12,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:12:12,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:12:12,789 INFO L87 Difference]: Start difference. First operand 8529 states and 11755 transitions. Second operand 5 states. [2020-10-12 19:12:14,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:12:14,314 INFO L93 Difference]: Finished difference Result 15407 states and 21201 transitions. [2020-10-12 19:12:14,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:12:14,315 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-12 19:12:14,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:12:14,331 INFO L225 Difference]: With dead ends: 15407 [2020-10-12 19:12:14,331 INFO L226 Difference]: Without dead ends: 6946 [2020-10-12 19:12:14,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:12:14,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6946 states. [2020-10-12 19:12:14,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6946 to 6945. [2020-10-12 19:12:14,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6945 states. [2020-10-12 19:12:14,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6945 states to 6945 states and 9542 transitions. [2020-10-12 19:12:14,781 INFO L78 Accepts]: Start accepts. Automaton has 6945 states and 9542 transitions. Word has length 163 [2020-10-12 19:12:14,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:12:14,781 INFO L479 AbstractCegarLoop]: Abstraction has 6945 states and 9542 transitions. [2020-10-12 19:12:14,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:12:14,781 INFO L276 IsEmpty]: Start isEmpty. Operand 6945 states and 9542 transitions. [2020-10-12 19:12:14,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 19:12:14,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:12:14,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:12:14,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:12:14,791 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:12:14,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:12:14,791 INFO L82 PathProgramCache]: Analyzing trace with hash -286956414, now seen corresponding path program 1 times [2020-10-12 19:12:14,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:12:14,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962909453] [2020-10-12 19:12:14,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:12:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:14,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:14,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:14,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:14,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:14,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:15,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:15,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:15,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:15,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:17,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:17,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:17,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:19,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:19,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 19:12:19,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:12:19,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:12:19,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:19,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:12:19,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:12:19,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 19:12:19,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:20,048 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:12:20,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:12:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:20,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:20,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:20,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:12:20,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:12:20,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:12:20,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:20,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:12:20,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:12:20,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:12:20,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:20,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:12:20,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962909453] [2020-10-12 19:12:20,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:12:20,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:12:20,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142581475] [2020-10-12 19:12:20,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 19:12:20,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:12:20,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 19:12:20,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:12:20,103 INFO L87 Difference]: Start difference. First operand 6945 states and 9542 transitions. Second operand 6 states. [2020-10-12 19:12:20,325 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 19:12:22,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:12:22,209 INFO L93 Difference]: Finished difference Result 17564 states and 24464 transitions. [2020-10-12 19:12:22,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:12:22,209 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2020-10-12 19:12:22,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:12:22,237 INFO L225 Difference]: With dead ends: 17564 [2020-10-12 19:12:22,238 INFO L226 Difference]: Without dead ends: 11394 [2020-10-12 19:12:22,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:12:22,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11394 states. [2020-10-12 19:12:23,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11394 to 11392. [2020-10-12 19:12:23,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11392 states. [2020-10-12 19:12:23,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11392 states to 11392 states and 15706 transitions. [2020-10-12 19:12:23,255 INFO L78 Accepts]: Start accepts. Automaton has 11392 states and 15706 transitions. Word has length 170 [2020-10-12 19:12:23,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:12:23,255 INFO L479 AbstractCegarLoop]: Abstraction has 11392 states and 15706 transitions. [2020-10-12 19:12:23,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 19:12:23,255 INFO L276 IsEmpty]: Start isEmpty. Operand 11392 states and 15706 transitions. [2020-10-12 19:12:23,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 19:12:23,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:12:23,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:12:23,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:12:23,266 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:12:23,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:12:23,266 INFO L82 PathProgramCache]: Analyzing trace with hash -161976724, now seen corresponding path program 1 times [2020-10-12 19:12:23,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:12:23,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95439710] [2020-10-12 19:12:23,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:12:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:23,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:23,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:23,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:23,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:23,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:23,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:23,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:23,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:23,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:23,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:25,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:28,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:28,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 19:12:28,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:12:28,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:12:28,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:28,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:12:28,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 19:12:28,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 19:12:28,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:28,528 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:12:28,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:12:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:28,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:28,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:28,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:12:28,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:12:28,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:12:28,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:12:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:12:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:12:28,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:28,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:12:28,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95439710] [2020-10-12 19:12:28,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:12:28,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:12:28,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167425279] [2020-10-12 19:12:28,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:12:28,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:12:28,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:12:28,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:12:28,567 INFO L87 Difference]: Start difference. First operand 11392 states and 15706 transitions. Second operand 5 states. [2020-10-12 19:12:30,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:12:30,274 INFO L93 Difference]: Finished difference Result 21431 states and 29540 transitions. [2020-10-12 19:12:30,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:12:30,275 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-12 19:12:30,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:12:30,293 INFO L225 Difference]: With dead ends: 21431 [2020-10-12 19:12:30,293 INFO L226 Difference]: Without dead ends: 10152 [2020-10-12 19:12:30,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:12:30,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10152 states. [2020-10-12 19:12:30,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10152 to 10152. [2020-10-12 19:12:30,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10152 states. [2020-10-12 19:12:30,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10152 states to 10152 states and 13979 transitions. [2020-10-12 19:12:30,886 INFO L78 Accepts]: Start accepts. Automaton has 10152 states and 13979 transitions. Word has length 170 [2020-10-12 19:12:30,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:12:30,887 INFO L479 AbstractCegarLoop]: Abstraction has 10152 states and 13979 transitions. [2020-10-12 19:12:30,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:12:30,887 INFO L276 IsEmpty]: Start isEmpty. Operand 10152 states and 13979 transitions. [2020-10-12 19:12:30,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-12 19:12:30,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:12:30,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:12:30,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:12:30,894 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:12:30,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:12:30,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1132654207, now seen corresponding path program 1 times [2020-10-12 19:12:30,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:12:30,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458486655] [2020-10-12 19:12:30,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:12:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:30,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:30,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:31,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:31,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:31,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:31,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:31,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:31,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:32,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:32,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:33,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:33,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:33,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:33,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:33,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:33,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:33,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:33,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:35,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:35,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:35,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-12 19:12:35,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-12 19:12:35,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:12:35,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:35,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 19:12:35,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-12 19:12:35,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-12 19:12:35,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:36,552 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:12:36,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:12:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:36,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:36,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:36,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:12:36,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:12:36,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:12:36,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:36,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:12:36,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:12:36,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:12:36,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:36,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:12:36,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458486655] [2020-10-12 19:12:36,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:12:36,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-12 19:12:36,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467921434] [2020-10-12 19:12:36,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 19:12:36,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:12:36,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 19:12:36,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2020-10-12 19:12:36,643 INFO L87 Difference]: Start difference. First operand 10152 states and 13979 transitions. Second operand 18 states. [2020-10-12 19:12:36,952 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-12 19:12:40,078 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-12 19:12:47,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:12:47,614 INFO L93 Difference]: Finished difference Result 49433 states and 71962 transitions. [2020-10-12 19:12:47,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-12 19:12:47,615 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 172 [2020-10-12 19:12:47,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:12:47,671 INFO L225 Difference]: With dead ends: 49433 [2020-10-12 19:12:47,671 INFO L226 Difference]: Without dead ends: 46295 [2020-10-12 19:12:47,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=747, Invalid=2559, Unknown=0, NotChecked=0, Total=3306 [2020-10-12 19:12:47,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46295 states. [2020-10-12 19:12:49,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46295 to 21707. [2020-10-12 19:12:49,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21707 states. [2020-10-12 19:12:49,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21707 states to 21707 states and 30632 transitions. [2020-10-12 19:12:49,470 INFO L78 Accepts]: Start accepts. Automaton has 21707 states and 30632 transitions. Word has length 172 [2020-10-12 19:12:49,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:12:49,471 INFO L479 AbstractCegarLoop]: Abstraction has 21707 states and 30632 transitions. [2020-10-12 19:12:49,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 19:12:49,471 INFO L276 IsEmpty]: Start isEmpty. Operand 21707 states and 30632 transitions. [2020-10-12 19:12:49,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-12 19:12:49,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:12:49,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:12:49,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:12:49,487 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:12:49,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:12:49,488 INFO L82 PathProgramCache]: Analyzing trace with hash 55295913, now seen corresponding path program 1 times [2020-10-12 19:12:49,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:12:49,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226510793] [2020-10-12 19:12:49,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:12:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:49,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:49,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:49,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:49,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:49,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:49,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:49,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:50,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:50,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:50,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:51,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:51,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:51,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:51,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:51,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:54,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:54,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-12 19:12:54,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:12:54,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 19:12:54,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:54,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:12:54,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-12 19:12:54,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 19:12:54,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:55,005 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:12:55,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:12:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:55,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:55,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:55,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:12:55,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:12:55,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:12:55,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:55,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:12:55,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:12:55,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:12:55,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:55,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:12:55,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226510793] [2020-10-12 19:12:55,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:12:55,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:12:55,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807481964] [2020-10-12 19:12:55,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:12:55,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:12:55,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:12:55,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:12:55,065 INFO L87 Difference]: Start difference. First operand 21707 states and 30632 transitions. Second operand 12 states. [2020-10-12 19:12:55,638 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2020-10-12 19:13:04,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:13:04,340 INFO L93 Difference]: Finished difference Result 62558 states and 92702 transitions. [2020-10-12 19:13:04,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 19:13:04,341 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 172 [2020-10-12 19:13:04,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:13:04,401 INFO L225 Difference]: With dead ends: 62558 [2020-10-12 19:13:04,401 INFO L226 Difference]: Without dead ends: 52884 [2020-10-12 19:13:04,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=167, Invalid=645, Unknown=0, NotChecked=0, Total=812 [2020-10-12 19:13:04,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52884 states. [2020-10-12 19:13:06,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52884 to 24836. [2020-10-12 19:13:06,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24836 states. [2020-10-12 19:13:06,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24836 states to 24836 states and 34334 transitions. [2020-10-12 19:13:06,544 INFO L78 Accepts]: Start accepts. Automaton has 24836 states and 34334 transitions. Word has length 172 [2020-10-12 19:13:06,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:13:06,545 INFO L479 AbstractCegarLoop]: Abstraction has 24836 states and 34334 transitions. [2020-10-12 19:13:06,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:13:06,545 INFO L276 IsEmpty]: Start isEmpty. Operand 24836 states and 34334 transitions. [2020-10-12 19:13:06,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-12 19:13:06,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:13:06,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:13:06,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 19:13:06,564 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:13:06,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:13:06,564 INFO L82 PathProgramCache]: Analyzing trace with hash -410305845, now seen corresponding path program 1 times [2020-10-12 19:13:06,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:13:06,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22964039] [2020-10-12 19:13:06,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:13:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:06,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:06,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:06,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:06,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:06,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:06,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:07,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:07,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:07,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:07,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:07,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:07,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:07,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:07,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:07,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:08,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:09,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:09,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:11,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:11,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-12 19:13:11,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-12 19:13:11,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 19:13:11,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:11,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 19:13:11,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-12 19:13:11,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-12 19:13:11,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:13:12,179 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:13:12,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:13:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:12,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:12,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:12,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:13:12,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:13:12,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:13:12,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:12,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:13:12,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:13:12,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:13:12,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:13:12,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:13:12,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22964039] [2020-10-12 19:13:12,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:13:12,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-12 19:13:12,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022664204] [2020-10-12 19:13:12,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 19:13:12,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:13:12,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 19:13:12,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-10-12 19:13:12,239 INFO L87 Difference]: Start difference. First operand 24836 states and 34334 transitions. Second operand 17 states. [2020-10-12 19:13:12,907 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 187 [2020-10-12 19:13:20,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:13:20,356 INFO L93 Difference]: Finished difference Result 48729 states and 69178 transitions. [2020-10-12 19:13:20,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 19:13:20,356 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 172 [2020-10-12 19:13:20,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:13:20,395 INFO L225 Difference]: With dead ends: 48729 [2020-10-12 19:13:20,395 INFO L226 Difference]: Without dead ends: 41205 [2020-10-12 19:13:20,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=211, Invalid=979, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 19:13:20,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41205 states. [2020-10-12 19:13:22,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41205 to 25838. [2020-10-12 19:13:22,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25838 states. [2020-10-12 19:13:22,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25838 states to 25838 states and 35538 transitions. [2020-10-12 19:13:22,748 INFO L78 Accepts]: Start accepts. Automaton has 25838 states and 35538 transitions. Word has length 172 [2020-10-12 19:13:22,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:13:22,748 INFO L479 AbstractCegarLoop]: Abstraction has 25838 states and 35538 transitions. [2020-10-12 19:13:22,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 19:13:22,748 INFO L276 IsEmpty]: Start isEmpty. Operand 25838 states and 35538 transitions. [2020-10-12 19:13:22,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-12 19:13:22,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:13:22,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:13:22,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 19:13:22,763 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:13:22,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:13:22,763 INFO L82 PathProgramCache]: Analyzing trace with hash 777644275, now seen corresponding path program 1 times [2020-10-12 19:13:22,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:13:22,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33101805] [2020-10-12 19:13:22,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:13:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:22,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:22,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:22,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:22,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:23,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:23,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:23,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:23,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:23,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:23,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:23,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:23,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:23,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:23,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:24,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:27,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:27,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-12 19:13:27,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:13:27,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 19:13:27,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:27,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 19:13:27,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:13:27,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-12 19:13:27,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:13:28,713 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:13:28,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:13:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:28,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:28,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:28,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:13:28,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:13:28,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:13:28,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:28,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:13:28,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:13:28,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:13:28,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:13:28,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:13:28,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33101805] [2020-10-12 19:13:28,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:13:28,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 19:13:28,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088550386] [2020-10-12 19:13:28,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 19:13:28,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:13:28,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 19:13:28,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:13:28,815 INFO L87 Difference]: Start difference. First operand 25838 states and 35538 transitions. Second operand 16 states. [2020-10-12 19:13:29,080 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:13:55,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:13:55,575 INFO L93 Difference]: Finished difference Result 158247 states and 238012 transitions. [2020-10-12 19:13:55,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-12 19:13:55,576 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 172 [2020-10-12 19:13:55,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:13:55,781 INFO L225 Difference]: With dead ends: 158247 [2020-10-12 19:13:55,781 INFO L226 Difference]: Without dead ends: 147693 [2020-10-12 19:13:55,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 872 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=551, Invalid=2755, Unknown=0, NotChecked=0, Total=3306 [2020-10-12 19:13:55,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147693 states. [2020-10-12 19:14:01,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147693 to 40384. [2020-10-12 19:14:01,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40384 states. [2020-10-12 19:14:01,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40384 states to 40384 states and 57246 transitions. [2020-10-12 19:14:01,327 INFO L78 Accepts]: Start accepts. Automaton has 40384 states and 57246 transitions. Word has length 172 [2020-10-12 19:14:01,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:14:01,327 INFO L479 AbstractCegarLoop]: Abstraction has 40384 states and 57246 transitions. [2020-10-12 19:14:01,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 19:14:01,327 INFO L276 IsEmpty]: Start isEmpty. Operand 40384 states and 57246 transitions. [2020-10-12 19:14:01,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-12 19:14:01,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:14:01,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:14:01,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 19:14:01,345 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:14:01,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:14:01,346 INFO L82 PathProgramCache]: Analyzing trace with hash 403971088, now seen corresponding path program 1 times [2020-10-12 19:14:01,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:14:01,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065140703] [2020-10-12 19:14:01,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:14:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:01,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:01,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:01,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:01,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:01,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:01,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:02,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:02,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:02,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:02,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:02,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:02,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:02,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:02,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:02,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:02,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:02,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:06,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:06,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-12 19:14:06,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:14:06,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4677 [2020-10-12 19:14:06,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:06,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:14:06,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 19:14:06,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-12 19:14:06,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:06,314 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:14:06,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:14:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:06,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:06,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:06,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:14:06,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:14:06,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:14:06,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:06,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:14:06,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:14:06,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:14:06,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:06,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:14:06,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065140703] [2020-10-12 19:14:06,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:14:06,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:14:06,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326215367] [2020-10-12 19:14:06,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 19:14:06,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:14:06,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 19:14:06,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:14:06,360 INFO L87 Difference]: Start difference. First operand 40384 states and 57246 transitions. Second operand 6 states. [2020-10-12 19:14:06,595 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-12 19:14:19,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:14:19,736 INFO L93 Difference]: Finished difference Result 93478 states and 140385 transitions. [2020-10-12 19:14:19,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:14:19,737 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2020-10-12 19:14:19,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:14:19,822 INFO L225 Difference]: With dead ends: 93478 [2020-10-12 19:14:19,822 INFO L226 Difference]: Without dead ends: 75120 [2020-10-12 19:14:19,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:14:19,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75120 states. [2020-10-12 19:14:32,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75120 to 75116. [2020-10-12 19:14:32,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75116 states. [2020-10-12 19:14:32,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75116 states to 75116 states and 110514 transitions. [2020-10-12 19:14:32,305 INFO L78 Accepts]: Start accepts. Automaton has 75116 states and 110514 transitions. Word has length 172 [2020-10-12 19:14:32,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:14:32,306 INFO L479 AbstractCegarLoop]: Abstraction has 75116 states and 110514 transitions. [2020-10-12 19:14:32,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 19:14:32,306 INFO L276 IsEmpty]: Start isEmpty. Operand 75116 states and 110514 transitions. [2020-10-12 19:14:32,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-12 19:14:32,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:14:32,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:14:32,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 19:14:32,329 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:14:32,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:14:32,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1599682038, now seen corresponding path program 1 times [2020-10-12 19:14:32,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:14:32,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291126104] [2020-10-12 19:14:32,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:14:32,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:32,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:32,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:32,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:32,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:32,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:32,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:32,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:32,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:33,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:33,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:33,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:33,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:33,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:33,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-12 19:14:33,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:14:33,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1108 [2020-10-12 19:14:33,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:33,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:14:33,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:14:33,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-12 19:14:33,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:33,780 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:14:33,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:14:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:33,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:33,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:33,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:14:33,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:14:33,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:14:33,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:33,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:14:33,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:14:33,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:14:33,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:33,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:14:33,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291126104] [2020-10-12 19:14:33,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:14:33,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:14:33,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163737153] [2020-10-12 19:14:33,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:14:33,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:14:33,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:14:33,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:14:33,846 INFO L87 Difference]: Start difference. First operand 75116 states and 110514 transitions. Second operand 5 states.