/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:57:26,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:57:26,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:57:26,927 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:57:26,927 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:57:26,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:57:26,929 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:57:26,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:57:26,933 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:57:26,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:57:26,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:57:26,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:57:26,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:57:26,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:57:26,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:57:26,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:57:26,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:57:26,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:57:26,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:57:26,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:57:26,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:57:26,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:57:26,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:57:26,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:57:26,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:57:26,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:57:26,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:57:26,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:57:26,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:57:26,953 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:57:26,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:57:26,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:57:26,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:57:26,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:57:26,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:57:26,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:57:26,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:57:26,957 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:57:26,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:57:26,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:57:26,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:57:26,959 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 08:57:26,983 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:57:26,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:57:26,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:57:26,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:57:26,984 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:57:26,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:57:26,985 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:57:26,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:57:26,985 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:57:26,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:57:26,986 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:57:26,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:57:26,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:57:26,986 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:57:26,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:57:26,987 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:57:26,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:57:26,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:57:26,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:57:26,987 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:57:26,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:57:26,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:57:26,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:57:26,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:57:26,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:57:26,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:57:26,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:57:26,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:57:26,989 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:57:26,989 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 08:57:27,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:57:27,338 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:57:27,341 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:57:27,343 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:57:27,343 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:57:27,344 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-14 08:57:27,405 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8016e303f/03b37cd483d74dd5a2213e5ddda505b0/FLAGfd915ced0 [2020-10-14 08:57:27,954 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:57:27,955 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-14 08:57:27,974 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8016e303f/03b37cd483d74dd5a2213e5ddda505b0/FLAGfd915ced0 [2020-10-14 08:57:28,251 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8016e303f/03b37cd483d74dd5a2213e5ddda505b0 [2020-10-14 08:57:28,261 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:57:28,263 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:57:28,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:57:28,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:57:28,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:57:28,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:57:28" (1/1) ... [2020-10-14 08:57:28,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7af41d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:57:28, skipping insertion in model container [2020-10-14 08:57:28,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:57:28" (1/1) ... [2020-10-14 08:57:28,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:57:28,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:57:28,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:57:28,661 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:57:28,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:57:28,884 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:57:28,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:57:28 WrapperNode [2020-10-14 08:57:28,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:57:28,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:57:28,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:57:28,887 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:57:28,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:57:28" (1/1) ... [2020-10-14 08:57:28,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:57:28" (1/1) ... [2020-10-14 08:57:28,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:57:28" (1/1) ... [2020-10-14 08:57:28,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:57:28" (1/1) ... [2020-10-14 08:57:28,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:57:28" (1/1) ... [2020-10-14 08:57:28,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:57:28" (1/1) ... [2020-10-14 08:57:28,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:57:28" (1/1) ... [2020-10-14 08:57:28,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:57:28,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:57:28,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:57:28,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:57:28,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:57:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:57:29,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:57:29,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:57:29,005 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:57:29,005 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:57:29,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:57:29,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:57:29,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:57:29,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 08:57:29,006 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:57:29,006 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:57:29,006 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:57:29,006 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:57:29,006 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:57:29,007 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:57:29,007 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:57:29,007 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:57:29,007 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 08:57:29,007 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 08:57:29,007 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-14 08:57:29,008 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-14 08:57:29,008 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:57:29,008 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:57:29,008 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:57:29,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:57:29,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:57:29,729 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:57:29,729 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:57:29,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:57:29 BoogieIcfgContainer [2020-10-14 08:57:29,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:57:29,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:57:29,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:57:29,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:57:29,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:57:28" (1/3) ... [2020-10-14 08:57:29,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7f7236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:57:29, skipping insertion in model container [2020-10-14 08:57:29,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:57:28" (2/3) ... [2020-10-14 08:57:29,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7f7236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:57:29, skipping insertion in model container [2020-10-14 08:57:29,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:57:29" (3/3) ... [2020-10-14 08:57:29,744 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-14 08:57:29,755 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:57:29,763 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 08:57:29,778 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 08:57:29,805 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:57:29,805 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:57:29,805 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:57:29,805 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:57:29,806 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:57:29,806 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:57:29,806 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:57:29,806 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:57:29,834 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states. [2020-10-14 08:57:29,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 08:57:29,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:57:29,848 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] [2020-10-14 08:57:29,849 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:57:29,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:57:29,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1044039479, now seen corresponding path program 1 times [2020-10-14 08:57:29,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:57:29,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021782915] [2020-10-14 08:57:29,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:57:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:30,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:30,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:30,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:30,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:31,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:31,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:35,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:35,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 08:57:35,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:57:35,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 08:57:35,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:35,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:35,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:57:35,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 08:57:35,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 08:57:35,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-14 08:57:35,816 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 08:57:35,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:57:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:35,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:35,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:35,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:57:35,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:57:35,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 08:57:35,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:35,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:35,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:57:35,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:57:35,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:57:35,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:57:35,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:57:35,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021782915] [2020-10-14 08:57:35,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:57:35,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:57:35,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40643541] [2020-10-14 08:57:35,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:57:35,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:57:35,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:57:35,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:57:35,939 INFO L87 Difference]: Start difference. First operand 143 states. Second operand 4 states. [2020-10-14 08:57:36,338 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 08:57:37,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:57:37,317 INFO L93 Difference]: Finished difference Result 307 states and 497 transitions. [2020-10-14 08:57:37,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:57:37,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2020-10-14 08:57:37,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:57:37,342 INFO L225 Difference]: With dead ends: 307 [2020-10-14 08:57:37,342 INFO L226 Difference]: Without dead ends: 213 [2020-10-14 08:57:37,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:57:37,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-14 08:57:37,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 211. [2020-10-14 08:57:37,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-14 08:57:37,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 302 transitions. [2020-10-14 08:57:37,463 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 302 transitions. Word has length 91 [2020-10-14 08:57:37,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:57:37,464 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 302 transitions. [2020-10-14 08:57:37,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:57:37,464 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 302 transitions. [2020-10-14 08:57:37,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 08:57:37,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:57:37,471 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] [2020-10-14 08:57:37,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:57:37,472 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:57:37,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:57:37,472 INFO L82 PathProgramCache]: Analyzing trace with hash -155469229, now seen corresponding path program 1 times [2020-10-14 08:57:37,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:57:37,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857912322] [2020-10-14 08:57:37,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:57:37,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:37,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:37,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:37,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:37,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:38,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:38,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:39,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:42,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:42,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 08:57:42,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:57:42,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 08:57:42,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:42,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:42,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:57:42,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 08:57:42,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 08:57:42,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 08:57:42,832 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 08:57:42,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:57:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:42,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:42,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:42,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:57:42,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:57:42,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 08:57:42,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:42,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:42,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:57:42,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:57:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:57:42,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:57:42,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:57:42,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857912322] [2020-10-14 08:57:42,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:57:42,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:57:42,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096824959] [2020-10-14 08:57:42,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:57:42,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:57:42,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:57:42,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:57:42,912 INFO L87 Difference]: Start difference. First operand 211 states and 302 transitions. Second operand 4 states. [2020-10-14 08:57:43,144 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 08:57:43,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:57:43,818 INFO L93 Difference]: Finished difference Result 503 states and 766 transitions. [2020-10-14 08:57:43,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:57:43,823 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2020-10-14 08:57:43,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:57:43,827 INFO L225 Difference]: With dead ends: 503 [2020-10-14 08:57:43,827 INFO L226 Difference]: Without dead ends: 349 [2020-10-14 08:57:43,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:57:43,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-14 08:57:43,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 347. [2020-10-14 08:57:43,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-10-14 08:57:43,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 518 transitions. [2020-10-14 08:57:43,892 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 518 transitions. Word has length 92 [2020-10-14 08:57:43,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:57:43,895 INFO L479 AbstractCegarLoop]: Abstraction has 347 states and 518 transitions. [2020-10-14 08:57:43,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:57:43,895 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 518 transitions. [2020-10-14 08:57:43,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 08:57:43,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:57:43,899 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] [2020-10-14 08:57:43,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:57:43,900 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:57:43,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:57:43,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1258302650, now seen corresponding path program 1 times [2020-10-14 08:57:43,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:57:43,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911334936] [2020-10-14 08:57:43,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:57:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:43,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:44,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:44,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:44,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:44,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:45,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:45,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:45,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:46,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:48,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:48,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 08:57:48,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:57:48,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 08:57:48,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:48,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:48,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:57:48,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 08:57:48,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 08:57:48,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 08:57:49,237 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 08:57:49,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:57:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:49,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:49,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:49,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:57:49,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:57:49,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 08:57:49,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:49,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:49,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:57:49,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:57:49,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:57:49,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:57:49,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:57:49,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911334936] [2020-10-14 08:57:49,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:57:49,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:57:49,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937391966] [2020-10-14 08:57:49,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:57:49,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:57:49,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:57:49,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:57:49,316 INFO L87 Difference]: Start difference. First operand 347 states and 518 transitions. Second operand 4 states. [2020-10-14 08:57:49,541 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 08:57:50,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:57:50,304 INFO L93 Difference]: Finished difference Result 895 states and 1388 transitions. [2020-10-14 08:57:50,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:57:50,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 93 [2020-10-14 08:57:50,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:57:50,309 INFO L225 Difference]: With dead ends: 895 [2020-10-14 08:57:50,309 INFO L226 Difference]: Without dead ends: 605 [2020-10-14 08:57:50,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:57:50,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2020-10-14 08:57:50,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 603. [2020-10-14 08:57:50,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-10-14 08:57:50,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 922 transitions. [2020-10-14 08:57:50,372 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 922 transitions. Word has length 93 [2020-10-14 08:57:50,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:57:50,372 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 922 transitions. [2020-10-14 08:57:50,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:57:50,373 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 922 transitions. [2020-10-14 08:57:50,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 08:57:50,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:57:50,379 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] [2020-10-14 08:57:50,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:57:50,380 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:57:50,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:57:50,380 INFO L82 PathProgramCache]: Analyzing trace with hash -640259199, now seen corresponding path program 1 times [2020-10-14 08:57:50,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:57:50,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393932961] [2020-10-14 08:57:50,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:57:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:50,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:50,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:50,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:50,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:50,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:51,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:51,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:51,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:55,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:55,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 08:57:55,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:57:55,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:57:55,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:55,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:55,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:57:55,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 08:57:55,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 08:57:55,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:57:55,661 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 08:57:55,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:57:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:55,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:55,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:55,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:57:55,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:57:55,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:57:55,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:55,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:55,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:57:55,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:57:55,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:57:55,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:57:55,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:57:55,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393932961] [2020-10-14 08:57:55,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:57:55,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:57:55,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974747107] [2020-10-14 08:57:55,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:57:55,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:57:55,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:57:55,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:57:55,706 INFO L87 Difference]: Start difference. First operand 603 states and 922 transitions. Second operand 4 states. [2020-10-14 08:57:55,919 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 08:57:56,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:57:56,634 INFO L93 Difference]: Finished difference Result 1631 states and 2548 transitions. [2020-10-14 08:57:56,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:57:56,636 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2020-10-14 08:57:56,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:57:56,648 INFO L225 Difference]: With dead ends: 1631 [2020-10-14 08:57:56,648 INFO L226 Difference]: Without dead ends: 1085 [2020-10-14 08:57:56,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:57:56,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2020-10-14 08:57:56,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 1083. [2020-10-14 08:57:56,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1083 states. [2020-10-14 08:57:56,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 1674 transitions. [2020-10-14 08:57:56,711 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 1674 transitions. Word has length 94 [2020-10-14 08:57:56,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:57:56,715 INFO L479 AbstractCegarLoop]: Abstraction has 1083 states and 1674 transitions. [2020-10-14 08:57:56,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:57:56,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 1674 transitions. [2020-10-14 08:57:56,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 08:57:56,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:57:56,718 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] [2020-10-14 08:57:56,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:57:56,719 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:57:56,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:57:56,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1052675143, now seen corresponding path program 1 times [2020-10-14 08:57:56,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:57:56,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063993200] [2020-10-14 08:57:56,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:57:56,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:56,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:56,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:56,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:56,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:57,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:57,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:57,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:57,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:57,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:57,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:58,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:01,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:01,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 08:58:01,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:58:01,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:58:01,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:01,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:01,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:58:01,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 08:58:01,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 08:58:01,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:58:02,042 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 08:58:02,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:58:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:02,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:02,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:02,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:58:02,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:58:02,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 08:58:02,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:02,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:02,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:58:02,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:58:02,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:58:02,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:58:02,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:58:02,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063993200] [2020-10-14 08:58:02,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:58:02,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:58:02,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171041952] [2020-10-14 08:58:02,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:58:02,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:58:02,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:58:02,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:58:02,118 INFO L87 Difference]: Start difference. First operand 1083 states and 1674 transitions. Second operand 4 states. [2020-10-14 08:58:02,453 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 08:58:03,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:58:03,551 INFO L93 Difference]: Finished difference Result 3007 states and 4700 transitions. [2020-10-14 08:58:03,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:58:03,552 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2020-10-14 08:58:03,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:58:03,565 INFO L225 Difference]: With dead ends: 3007 [2020-10-14 08:58:03,565 INFO L226 Difference]: Without dead ends: 1981 [2020-10-14 08:58:03,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:58:03,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states. [2020-10-14 08:58:03,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1979. [2020-10-14 08:58:03,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1979 states. [2020-10-14 08:58:03,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1979 states to 1979 states and 3066 transitions. [2020-10-14 08:58:03,694 INFO L78 Accepts]: Start accepts. Automaton has 1979 states and 3066 transitions. Word has length 95 [2020-10-14 08:58:03,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:58:03,694 INFO L479 AbstractCegarLoop]: Abstraction has 1979 states and 3066 transitions. [2020-10-14 08:58:03,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:58:03,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1979 states and 3066 transitions. [2020-10-14 08:58:03,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 08:58:03,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:58:03,696 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] [2020-10-14 08:58:03,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:58:03,696 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:58:03,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:58:03,696 INFO L82 PathProgramCache]: Analyzing trace with hash -944065711, now seen corresponding path program 1 times [2020-10-14 08:58:03,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:58:03,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177085422] [2020-10-14 08:58:03,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:58:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:03,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:03,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:03,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:03,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:03,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:04,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:04,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:04,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:04,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:04,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:05,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:08,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:08,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 08:58:08,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:58:08,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 08:58:08,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:08,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:08,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:58:08,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 08:58:08,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 08:58:08,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:09,004 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 08:58:09,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:58:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:09,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:09,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:09,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:58:09,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:58:09,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 08:58:09,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:09,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:09,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:58:09,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:58:09,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:58:09,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:58:09,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:58:09,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177085422] [2020-10-14 08:58:09,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:58:09,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:58:09,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140228015] [2020-10-14 08:58:09,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:58:09,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:58:09,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:58:09,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:58:09,066 INFO L87 Difference]: Start difference. First operand 1979 states and 3066 transitions. Second operand 4 states. [2020-10-14 08:58:09,306 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 08:58:10,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:58:10,173 INFO L93 Difference]: Finished difference Result 5567 states and 8668 transitions. [2020-10-14 08:58:10,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:58:10,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2020-10-14 08:58:10,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:58:10,197 INFO L225 Difference]: With dead ends: 5567 [2020-10-14 08:58:10,198 INFO L226 Difference]: Without dead ends: 3645 [2020-10-14 08:58:10,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:58:10,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3645 states. [2020-10-14 08:58:10,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3645 to 3643. [2020-10-14 08:58:10,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3643 states. [2020-10-14 08:58:10,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 5626 transitions. [2020-10-14 08:58:10,400 INFO L78 Accepts]: Start accepts. Automaton has 3643 states and 5626 transitions. Word has length 96 [2020-10-14 08:58:10,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:58:10,401 INFO L479 AbstractCegarLoop]: Abstraction has 3643 states and 5626 transitions. [2020-10-14 08:58:10,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:58:10,401 INFO L276 IsEmpty]: Start isEmpty. Operand 3643 states and 5626 transitions. [2020-10-14 08:58:10,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 08:58:10,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:58:10,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:58:10,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:58:10,403 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:58:10,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:58:10,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1576756346, now seen corresponding path program 1 times [2020-10-14 08:58:10,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:58:10,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673784292] [2020-10-14 08:58:10,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:58:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:10,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:10,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:10,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:10,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:10,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:10,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:10,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:11,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:11,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:11,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:12,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:15,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:15,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 08:58:15,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:58:15,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:58:15,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:15,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:15,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:58:15,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:58:15,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 08:58:15,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:15,680 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 08:58:15,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:58:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:15,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:15,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:15,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:58:15,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:58:15,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 08:58:15,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:15,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:15,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:58:15,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:58:15,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:58:15,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:58:15,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:58:15,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673784292] [2020-10-14 08:58:15,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:58:15,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:58:15,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861356282] [2020-10-14 08:58:15,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:58:15,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:58:15,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:58:15,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:58:15,745 INFO L87 Difference]: Start difference. First operand 3643 states and 5626 transitions. Second operand 6 states. [2020-10-14 08:58:16,006 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 08:58:16,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:58:16,760 INFO L93 Difference]: Finished difference Result 7229 states and 11195 transitions. [2020-10-14 08:58:16,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:58:16,761 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-14 08:58:16,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:58:16,779 INFO L225 Difference]: With dead ends: 7229 [2020-10-14 08:58:16,779 INFO L226 Difference]: Without dead ends: 3643 [2020-10-14 08:58:16,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:58:16,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3643 states. [2020-10-14 08:58:16,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3643 to 3643. [2020-10-14 08:58:16,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3643 states. [2020-10-14 08:58:17,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 5594 transitions. [2020-10-14 08:58:17,022 INFO L78 Accepts]: Start accepts. Automaton has 3643 states and 5594 transitions. Word has length 97 [2020-10-14 08:58:17,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:58:17,023 INFO L479 AbstractCegarLoop]: Abstraction has 3643 states and 5594 transitions. [2020-10-14 08:58:17,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:58:17,023 INFO L276 IsEmpty]: Start isEmpty. Operand 3643 states and 5594 transitions. [2020-10-14 08:58:17,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 08:58:17,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:58:17,025 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] [2020-10-14 08:58:17,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:58:17,026 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:58:17,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:58:17,026 INFO L82 PathProgramCache]: Analyzing trace with hash -265274187, now seen corresponding path program 1 times [2020-10-14 08:58:17,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:58:17,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725855228] [2020-10-14 08:58:17,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:58:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:17,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:17,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:17,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:17,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:17,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:17,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:17,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:19,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:19,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:19,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:22,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:22,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 08:58:22,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:58:22,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:58:22,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:22,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:22,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:58:22,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:58:22,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 08:58:22,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:22,312 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 08:58:22,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:58:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:22,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:22,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:22,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:58:22,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:58:22,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 08:58:22,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:22,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:22,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:58:22,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:58:22,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:58:22,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:22,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:58:22,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725855228] [2020-10-14 08:58:22,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:58:22,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:58:22,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273778390] [2020-10-14 08:58:22,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:58:22,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:58:22,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:58:22,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:58:22,366 INFO L87 Difference]: Start difference. First operand 3643 states and 5594 transitions. Second operand 6 states. [2020-10-14 08:58:22,613 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-14 08:58:23,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:58:23,624 INFO L93 Difference]: Finished difference Result 10783 states and 16604 transitions. [2020-10-14 08:58:23,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:58:23,624 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-14 08:58:23,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:58:23,663 INFO L225 Difference]: With dead ends: 10783 [2020-10-14 08:58:23,663 INFO L226 Difference]: Without dead ends: 7197 [2020-10-14 08:58:23,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:58:23,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7197 states. [2020-10-14 08:58:24,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7197 to 7195. [2020-10-14 08:58:24,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7195 states. [2020-10-14 08:58:24,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7195 states to 7195 states and 11034 transitions. [2020-10-14 08:58:24,100 INFO L78 Accepts]: Start accepts. Automaton has 7195 states and 11034 transitions. Word has length 97 [2020-10-14 08:58:24,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:58:24,101 INFO L479 AbstractCegarLoop]: Abstraction has 7195 states and 11034 transitions. [2020-10-14 08:58:24,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:58:24,101 INFO L276 IsEmpty]: Start isEmpty. Operand 7195 states and 11034 transitions. [2020-10-14 08:58:24,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 08:58:24,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:58:24,102 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] [2020-10-14 08:58:24,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:58:24,103 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:58:24,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:58:24,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1712303782, now seen corresponding path program 1 times [2020-10-14 08:58:24,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:58:24,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912721936] [2020-10-14 08:58:24,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:58:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:24,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:24,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:24,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:24,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:24,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:24,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:26,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:29,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:29,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 08:58:29,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:58:29,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 08:58:29,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:29,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:29,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:58:29,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:58:29,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 08:58:29,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:58:29,363 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 08:58:29,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:58:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:29,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:29,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:29,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:58:29,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:58:29,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:58:29,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:29,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:29,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:58:29,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:58:29,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:58:29,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:29,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:58:29,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912721936] [2020-10-14 08:58:29,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:58:29,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:58:29,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930354338] [2020-10-14 08:58:29,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:58:29,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:58:29,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:58:29,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:58:29,400 INFO L87 Difference]: Start difference. First operand 7195 states and 11034 transitions. Second operand 6 states. [2020-10-14 08:58:29,646 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 08:58:30,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:58:30,509 INFO L93 Difference]: Finished difference Result 14333 states and 22011 transitions. [2020-10-14 08:58:30,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:58:30,510 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-14 08:58:30,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:58:30,565 INFO L225 Difference]: With dead ends: 14333 [2020-10-14 08:58:30,566 INFO L226 Difference]: Without dead ends: 7195 [2020-10-14 08:58:30,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:58:30,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7195 states. [2020-10-14 08:58:31,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7195 to 7195. [2020-10-14 08:58:31,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7195 states. [2020-10-14 08:58:31,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7195 states to 7195 states and 10970 transitions. [2020-10-14 08:58:31,109 INFO L78 Accepts]: Start accepts. Automaton has 7195 states and 10970 transitions. Word has length 97 [2020-10-14 08:58:31,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:58:31,109 INFO L479 AbstractCegarLoop]: Abstraction has 7195 states and 10970 transitions. [2020-10-14 08:58:31,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:58:31,109 INFO L276 IsEmpty]: Start isEmpty. Operand 7195 states and 10970 transitions. [2020-10-14 08:58:31,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 08:58:31,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:58:31,110 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] [2020-10-14 08:58:31,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:58:31,111 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:58:31,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:58:31,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1118591957, now seen corresponding path program 1 times [2020-10-14 08:58:31,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:58:31,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681257309] [2020-10-14 08:58:31,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:58:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:31,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:31,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:31,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:31,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:33,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:33,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 08:58:33,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:58:33,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2794 [2020-10-14 08:58:33,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:33,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:33,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:58:33,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:58:33,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 08:58:33,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:34,160 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 08:58:34,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:58:34,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:34,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:34,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:34,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:58:34,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:58:34,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 08:58:34,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:34,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:34,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:58:34,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:58:34,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:58:34,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:34,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:58:34,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681257309] [2020-10-14 08:58:34,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:58:34,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:58:34,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289157000] [2020-10-14 08:58:34,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:58:34,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:58:34,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:58:34,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:58:34,202 INFO L87 Difference]: Start difference. First operand 7195 states and 10970 transitions. Second operand 6 states. [2020-10-14 08:58:34,445 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 08:58:35,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:58:35,239 INFO L93 Difference]: Finished difference Result 14333 states and 21883 transitions. [2020-10-14 08:58:35,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:58:35,240 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-14 08:58:35,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:58:35,260 INFO L225 Difference]: With dead ends: 14333 [2020-10-14 08:58:35,260 INFO L226 Difference]: Without dead ends: 7195 [2020-10-14 08:58:35,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:58:35,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7195 states. [2020-10-14 08:58:35,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7195 to 7195. [2020-10-14 08:58:35,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7195 states. [2020-10-14 08:58:35,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7195 states to 7195 states and 10906 transitions. [2020-10-14 08:58:35,640 INFO L78 Accepts]: Start accepts. Automaton has 7195 states and 10906 transitions. Word has length 97 [2020-10-14 08:58:35,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:58:35,640 INFO L479 AbstractCegarLoop]: Abstraction has 7195 states and 10906 transitions. [2020-10-14 08:58:35,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:58:35,640 INFO L276 IsEmpty]: Start isEmpty. Operand 7195 states and 10906 transitions. [2020-10-14 08:58:35,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 08:58:35,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:58:35,642 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] [2020-10-14 08:58:35,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:58:35,642 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:58:35,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:58:35,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1848990150, now seen corresponding path program 1 times [2020-10-14 08:58:35,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:58:35,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709360986] [2020-10-14 08:58:35,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:58:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:35,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:35,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:36,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:36,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 08:58:36,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 08:58:36,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 635 [2020-10-14 08:58:36,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:36,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:36,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:58:36,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:58:36,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 08:58:36,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:36,635 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 08:58:36,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:58:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:36,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:36,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:36,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:58:36,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:58:36,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 08:58:36,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:36,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:36,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:58:36,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:58:36,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:58:36,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:36,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:58:36,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709360986] [2020-10-14 08:58:36,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:58:36,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:58:36,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794274169] [2020-10-14 08:58:36,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:58:36,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:58:36,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:58:36,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:58:36,685 INFO L87 Difference]: Start difference. First operand 7195 states and 10906 transitions. Second operand 6 states. [2020-10-14 08:58:36,919 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-14 08:58:37,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:58:37,995 INFO L93 Difference]: Finished difference Result 21343 states and 32348 transitions. [2020-10-14 08:58:37,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:58:37,995 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-14 08:58:37,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:58:38,034 INFO L225 Difference]: With dead ends: 21343 [2020-10-14 08:58:38,034 INFO L226 Difference]: Without dead ends: 14205 [2020-10-14 08:58:38,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:58:38,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14205 states. [2020-10-14 08:58:38,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14205 to 14203. [2020-10-14 08:58:38,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14203 states. [2020-10-14 08:58:38,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14203 states to 14203 states and 21370 transitions. [2020-10-14 08:58:38,971 INFO L78 Accepts]: Start accepts. Automaton has 14203 states and 21370 transitions. Word has length 97 [2020-10-14 08:58:38,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:58:38,971 INFO L479 AbstractCegarLoop]: Abstraction has 14203 states and 21370 transitions. [2020-10-14 08:58:38,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:58:38,971 INFO L276 IsEmpty]: Start isEmpty. Operand 14203 states and 21370 transitions. [2020-10-14 08:58:38,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 08:58:38,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:58:38,973 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] [2020-10-14 08:58:38,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:58:38,973 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:58:38,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:58:38,973 INFO L82 PathProgramCache]: Analyzing trace with hash -313592225, now seen corresponding path program 1 times [2020-10-14 08:58:38,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:58:38,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090010042] [2020-10-14 08:58:38,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:58:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:39,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:39,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:39,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 08:58:39,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:58:39,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-14 08:58:39,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:39,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:39,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:58:39,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:58:39,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 08:58:39,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:39,529 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 08:58:39,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:58:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:39,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:39,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:39,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:58:39,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:58:39,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:58:39,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:39,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:39,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:58:39,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:58:39,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:58:39,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:39,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:58:39,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090010042] [2020-10-14 08:58:39,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:58:39,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:58:39,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563687857] [2020-10-14 08:58:39,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:58:39,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:58:39,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:58:39,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:58:39,563 INFO L87 Difference]: Start difference. First operand 14203 states and 21370 transitions. Second operand 10 states. [2020-10-14 08:58:39,845 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-14 08:58:49,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:58:49,789 INFO L93 Difference]: Finished difference Result 212247 states and 319752 transitions. [2020-10-14 08:58:49,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 08:58:49,789 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 97 [2020-10-14 08:58:49,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:58:50,332 INFO L225 Difference]: With dead ends: 212247 [2020-10-14 08:58:50,332 INFO L226 Difference]: Without dead ends: 198101 [2020-10-14 08:58:50,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-14 08:58:50,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198101 states. [2020-10-14 08:58:53,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198101 to 28347. [2020-10-14 08:58:53,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28347 states. [2020-10-14 08:58:54,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28347 states to 28347 states and 42170 transitions. [2020-10-14 08:58:54,235 INFO L78 Accepts]: Start accepts. Automaton has 28347 states and 42170 transitions. Word has length 97 [2020-10-14 08:58:54,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:58:54,236 INFO L479 AbstractCegarLoop]: Abstraction has 28347 states and 42170 transitions. [2020-10-14 08:58:54,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:58:54,236 INFO L276 IsEmpty]: Start isEmpty. Operand 28347 states and 42170 transitions. [2020-10-14 08:58:54,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 08:58:54,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:58:54,237 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] [2020-10-14 08:58:54,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:58:54,238 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:58:54,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:58:54,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1607606342, now seen corresponding path program 1 times [2020-10-14 08:58:54,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:58:54,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213077518] [2020-10-14 08:58:54,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:58:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:54,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:54,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:54,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:54,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:54,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 08:58:54,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 08:58:54,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-14 08:58:54,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:54,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:54,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:58:54,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 08:58:54,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 08:58:54,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:54,660 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 08:58:54,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:58:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:54,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:54,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:54,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:58:54,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:58:54,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:58:54,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:54,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:54,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:58:54,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:58:54,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:58:54,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:54,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:58:54,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213077518] [2020-10-14 08:58:54,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:58:54,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:58:54,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684521361] [2020-10-14 08:58:54,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:58:54,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:58:54,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:58:54,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:58:54,691 INFO L87 Difference]: Start difference. First operand 28347 states and 42170 transitions. Second operand 4 states. [2020-10-14 08:58:54,910 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 08:58:59,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:58:59,164 INFO L93 Difference]: Finished difference Result 69503 states and 103036 transitions. [2020-10-14 08:58:59,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:58:59,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-14 08:58:59,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:58:59,247 INFO L225 Difference]: With dead ends: 69503 [2020-10-14 08:58:59,247 INFO L226 Difference]: Without dead ends: 41213 [2020-10-14 08:58:59,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:58:59,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41213 states. [2020-10-14 08:59:02,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41213 to 40955. [2020-10-14 08:59:02,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40955 states. [2020-10-14 08:59:02,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40955 states to 40955 states and 60026 transitions. [2020-10-14 08:59:02,379 INFO L78 Accepts]: Start accepts. Automaton has 40955 states and 60026 transitions. Word has length 99 [2020-10-14 08:59:02,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:59:02,379 INFO L479 AbstractCegarLoop]: Abstraction has 40955 states and 60026 transitions. [2020-10-14 08:59:02,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:59:02,379 INFO L276 IsEmpty]: Start isEmpty. Operand 40955 states and 60026 transitions. [2020-10-14 08:59:02,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 08:59:02,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:59:02,380 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] [2020-10-14 08:59:02,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 08:59:02,381 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:59:02,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:59:02,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1587556999, now seen corresponding path program 1 times [2020-10-14 08:59:02,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:59:02,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623041285] [2020-10-14 08:59:02,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:59:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:02,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:02,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:02,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 08:59:02,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:59:02,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-14 08:59:02,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:02,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:02,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:59:02,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:59:02,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 08:59:02,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:03,040 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 08:59:03,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:59:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:03,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:03,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:03,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:59:03,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:59:03,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:59:03,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:03,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:03,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:59:03,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:59:03,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:59:03,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:03,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:59:03,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623041285] [2020-10-14 08:59:03,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:59:03,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:59:03,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926726886] [2020-10-14 08:59:03,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:59:03,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:59:03,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:59:03,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:59:03,096 INFO L87 Difference]: Start difference. First operand 40955 states and 60026 transitions. Second operand 10 states. [2020-10-14 08:59:03,457 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-14 08:59:27,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:59:27,812 INFO L93 Difference]: Finished difference Result 314647 states and 461960 transitions. [2020-10-14 08:59:27,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 08:59:27,813 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 99 [2020-10-14 08:59:27,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:59:28,175 INFO L225 Difference]: With dead ends: 314647 [2020-10-14 08:59:28,175 INFO L226 Difference]: Without dead ends: 273749 [2020-10-14 08:59:28,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-14 08:59:28,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273749 states. [2020-10-14 08:59:33,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273749 to 40955. [2020-10-14 08:59:33,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40955 states. [2020-10-14 08:59:33,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40955 states to 40955 states and 59642 transitions. [2020-10-14 08:59:33,696 INFO L78 Accepts]: Start accepts. Automaton has 40955 states and 59642 transitions. Word has length 99 [2020-10-14 08:59:33,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:59:33,696 INFO L479 AbstractCegarLoop]: Abstraction has 40955 states and 59642 transitions. [2020-10-14 08:59:33,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:59:33,696 INFO L276 IsEmpty]: Start isEmpty. Operand 40955 states and 59642 transitions. [2020-10-14 08:59:33,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 08:59:33,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:59:33,697 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] [2020-10-14 08:59:33,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 08:59:33,698 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:59:33,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:59:33,698 INFO L82 PathProgramCache]: Analyzing trace with hash -309958773, now seen corresponding path program 1 times [2020-10-14 08:59:33,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:59:33,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360655397] [2020-10-14 08:59:33,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:59:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:33,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:33,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:33,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:33,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:34,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:34,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 08:59:34,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:59:34,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-10-14 08:59:34,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:34,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:34,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:59:34,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 08:59:34,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 08:59:34,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:34,330 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 08:59:34,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:59:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:34,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:34,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:34,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:59:34,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:59:34,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:59:34,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:34,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:34,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:59:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:59:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:59:34,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:34,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:59:34,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360655397] [2020-10-14 08:59:34,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:59:34,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:59:34,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477180883] [2020-10-14 08:59:34,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:59:34,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:59:34,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:59:34,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:59:34,357 INFO L87 Difference]: Start difference. First operand 40955 states and 59642 transitions. Second operand 4 states. [2020-10-14 08:59:34,579 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 08:59:41,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:59:41,816 INFO L93 Difference]: Finished difference Result 92674 states and 135936 transitions. [2020-10-14 08:59:41,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:59:41,816 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-14 08:59:41,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:59:41,889 INFO L225 Difference]: With dead ends: 92674 [2020-10-14 08:59:41,890 INFO L226 Difference]: Without dead ends: 64383 [2020-10-14 08:59:41,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:59:41,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64383 states. [2020-10-14 08:59:49,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64383 to 64381. [2020-10-14 08:59:49,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64381 states. [2020-10-14 08:59:50,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64381 states to 64381 states and 93564 transitions. [2020-10-14 08:59:50,016 INFO L78 Accepts]: Start accepts. Automaton has 64381 states and 93564 transitions. Word has length 100 [2020-10-14 08:59:50,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:59:50,016 INFO L479 AbstractCegarLoop]: Abstraction has 64381 states and 93564 transitions. [2020-10-14 08:59:50,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:59:50,016 INFO L276 IsEmpty]: Start isEmpty. Operand 64381 states and 93564 transitions. [2020-10-14 08:59:50,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 08:59:50,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:59:50,017 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] [2020-10-14 08:59:50,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 08:59:50,018 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:59:50,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:59:50,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1971535976, now seen corresponding path program 1 times [2020-10-14 08:59:50,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:59:50,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248228310] [2020-10-14 08:59:50,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:59:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:50,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:50,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:50,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 08:59:50,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:59:50,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 08:59:50,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:50,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:50,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:59:50,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-14 08:59:50,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 08:59:50,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:50,399 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 08:59:50,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:59:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:50,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:50,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:50,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:59:50,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:59:50,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:59:50,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:50,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:50,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:59:50,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:59:50,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:59:50,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:50,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:59:50,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248228310] [2020-10-14 08:59:50,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:59:50,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:59:50,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742943845] [2020-10-14 08:59:50,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:59:50,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:59:50,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:59:50,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:59:50,430 INFO L87 Difference]: Start difference. First operand 64381 states and 93564 transitions. Second operand 5 states. [2020-10-14 09:00:03,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:00:03,448 INFO L93 Difference]: Finished difference Result 122267 states and 177126 transitions. [2020-10-14 09:00:03,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:00:03,449 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-14 09:00:03,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:00:03,589 INFO L225 Difference]: With dead ends: 122267 [2020-10-14 09:00:03,589 INFO L226 Difference]: Without dead ends: 122265 [2020-10-14 09:00:03,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:00:03,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122265 states. [2020-10-14 09:00:11,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122265 to 66429. [2020-10-14 09:00:11,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66429 states. [2020-10-14 09:00:11,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66429 states to 66429 states and 95484 transitions. [2020-10-14 09:00:11,630 INFO L78 Accepts]: Start accepts. Automaton has 66429 states and 95484 transitions. Word has length 100 [2020-10-14 09:00:11,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:00:11,630 INFO L479 AbstractCegarLoop]: Abstraction has 66429 states and 95484 transitions. [2020-10-14 09:00:11,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:00:11,630 INFO L276 IsEmpty]: Start isEmpty. Operand 66429 states and 95484 transitions. [2020-10-14 09:00:11,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 09:00:11,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:00:11,647 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:00:11,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 09:00:11,647 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:00:11,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:00:11,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1304758221, now seen corresponding path program 1 times [2020-10-14 09:00:11,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:00:11,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029887468] [2020-10-14 09:00:11,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:00:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:00:11,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:11,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:11,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:12,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:12,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:12,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:12,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:13,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:13,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:13,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:13,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:16,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:16,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:16,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:16,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 09:00:16,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:00:16,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 09:00:16,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:16,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:16,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:00:16,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 09:00:16,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 09:00:16,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:00:16,922 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 09:00:16,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:00:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:00:16,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:16,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:16,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:00:16,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:00:16,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:00:16,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:16,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:16,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:00:16,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:00:16,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:00:16,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:00:16,964 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:00:16,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029887468] [2020-10-14 09:00:16,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:00:16,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:00:16,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018089777] [2020-10-14 09:00:16,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:00:16,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:00:16,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:00:16,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:00:16,967 INFO L87 Difference]: Start difference. First operand 66429 states and 95484 transitions. Second operand 4 states. [2020-10-14 09:00:23,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:00:23,582 INFO L93 Difference]: Finished difference Result 120243 states and 173370 transitions. [2020-10-14 09:00:23,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:00:23,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-10-14 09:00:23,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:00:23,644 INFO L225 Difference]: With dead ends: 120243 [2020-10-14 09:00:23,645 INFO L226 Difference]: Without dead ends: 53873 [2020-10-14 09:00:23,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:00:23,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53873 states. [2020-10-14 09:00:29,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53873 to 53871. [2020-10-14 09:00:29,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53871 states. [2020-10-14 09:00:29,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53871 states to 53871 states and 77431 transitions. [2020-10-14 09:00:29,937 INFO L78 Accepts]: Start accepts. Automaton has 53871 states and 77431 transitions. Word has length 135 [2020-10-14 09:00:29,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:00:29,938 INFO L479 AbstractCegarLoop]: Abstraction has 53871 states and 77431 transitions. [2020-10-14 09:00:29,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:00:29,938 INFO L276 IsEmpty]: Start isEmpty. Operand 53871 states and 77431 transitions. [2020-10-14 09:00:29,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 09:00:29,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:00:29,949 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:00:29,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 09:00:29,949 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:00:29,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:00:29,950 INFO L82 PathProgramCache]: Analyzing trace with hash -356518302, now seen corresponding path program 1 times [2020-10-14 09:00:29,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:00:29,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191920880] [2020-10-14 09:00:29,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:00:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:00:30,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:30,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:30,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:30,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:30,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:30,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:30,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:30,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:31,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:31,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:31,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:32,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:32,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:34,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:34,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 09:00:34,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:00:34,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 09:00:34,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:34,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:34,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:00:34,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 09:00:34,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 09:00:34,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:00:35,212 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 09:00:35,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:00:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:00:35,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:35,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:35,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:00:35,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:00:35,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:00:35,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:35,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:35,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:00:35,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:00:35,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:00:35,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:00:35,247 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:00:35,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191920880] [2020-10-14 09:00:35,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 09:00:35,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 09:00:35,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133095398] [2020-10-14 09:00:35,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:00:35,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:00:35,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:00:35,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:00:35,249 INFO L87 Difference]: Start difference. First operand 53871 states and 77431 transitions. Second operand 6 states. [2020-10-14 09:00:36,227 WARN L193 SmtUtils]: Spent 929.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 09:00:48,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:00:48,543 INFO L93 Difference]: Finished difference Result 158325 states and 228474 transitions. [2020-10-14 09:00:48,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:00:48,543 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2020-10-14 09:00:48,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:00:48,658 INFO L225 Difference]: With dead ends: 158325 [2020-10-14 09:00:48,658 INFO L226 Difference]: Without dead ends: 104563 [2020-10-14 09:00:48,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:00:48,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104563 states. [2020-10-14 09:01:03,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104563 to 104559. [2020-10-14 09:01:03,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104559 states. [2020-10-14 09:01:03,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104559 states to 104559 states and 150135 transitions. [2020-10-14 09:01:03,382 INFO L78 Accepts]: Start accepts. Automaton has 104559 states and 150135 transitions. Word has length 136 [2020-10-14 09:01:03,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:01:03,383 INFO L479 AbstractCegarLoop]: Abstraction has 104559 states and 150135 transitions. [2020-10-14 09:01:03,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:01:03,383 INFO L276 IsEmpty]: Start isEmpty. Operand 104559 states and 150135 transitions. [2020-10-14 09:01:03,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 09:01:03,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:01:03,394 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:01:03,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 09:01:03,395 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:01:03,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:01:03,395 INFO L82 PathProgramCache]: Analyzing trace with hash 761816942, now seen corresponding path program 1 times [2020-10-14 09:01:03,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:01:03,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230036681] [2020-10-14 09:01:03,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:01:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:03,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:03,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:03,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:03,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:03,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:03,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:04,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:08,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:08,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 09:01:08,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:01:08,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 09:01:08,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:08,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:08,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:01:08,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 09:01:08,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 09:01:08,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:01:08,575 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-10-14 09:01:08,769 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 09:01:08,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:01:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:08,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:08,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:08,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:01:08,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:01:08,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:01:08,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:08,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:08,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:01:08,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:01:08,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:01:08,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:01:08,803 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:01:08,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230036681] [2020-10-14 09:01:08,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 09:01:08,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 09:01:08,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114674773] [2020-10-14 09:01:08,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:01:08,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:01:08,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:01:08,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:01:08,805 INFO L87 Difference]: Start difference. First operand 104559 states and 150135 transitions. Second operand 6 states. [2020-10-14 09:01:09,041 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 176