/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:52:21,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:52:21,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:52:21,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:52:21,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:52:21,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:52:21,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:52:21,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:52:21,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:52:21,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:52:21,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:52:21,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:52:21,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:52:21,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:52:21,986 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:52:21,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:52:21,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:52:21,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:52:21,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:52:21,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:52:22,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:52:22,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:52:22,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:52:22,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:52:22,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:52:22,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:52:22,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:52:22,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:52:22,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:52:22,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:52:22,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:52:22,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:52:22,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:52:22,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:52:22,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:52:22,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:52:22,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:52:22,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:52:22,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:52:22,024 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:52:22,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:52:22,025 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 03:52:22,046 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:52:22,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:52:22,048 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:52:22,048 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:52:22,048 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:52:22,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:52:22,048 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:52:22,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:52:22,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:52:22,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:52:22,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:52:22,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:52:22,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:52:22,050 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:52:22,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:52:22,050 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:52:22,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:52:22,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:52:22,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:52:22,051 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:52:22,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:52:22,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:52:22,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:52:22,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:52:22,052 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:52:22,052 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:52:22,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:52:22,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:52:22,053 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:52:22,053 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:52:22,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:52:22,378 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:52:22,381 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:52:22,383 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:52:22,383 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:52:22,384 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 03:52:22,446 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd0200911/9576940d566b48728ff9f23d847d6ecf/FLAGab4a97297 [2020-10-15 03:52:22,932 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:52:22,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 03:52:22,950 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd0200911/9576940d566b48728ff9f23d847d6ecf/FLAGab4a97297 [2020-10-15 03:52:23,283 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd0200911/9576940d566b48728ff9f23d847d6ecf [2020-10-15 03:52:23,293 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:52:23,295 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:52:23,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:52:23,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:52:23,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:52:23,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:52:23" (1/1) ... [2020-10-15 03:52:23,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363f8acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:52:23, skipping insertion in model container [2020-10-15 03:52:23,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:52:23" (1/1) ... [2020-10-15 03:52:23,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:52:23,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:52:23,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:52:23,779 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:52:23,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:52:23,953 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:52:23,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:52:23 WrapperNode [2020-10-15 03:52:23,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:52:23,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:52:23,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:52:23,955 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:52:23,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:52:23" (1/1) ... [2020-10-15 03:52:23,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:52:23" (1/1) ... [2020-10-15 03:52:23,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:52:23" (1/1) ... [2020-10-15 03:52:23,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:52:23" (1/1) ... [2020-10-15 03:52:23,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:52:23" (1/1) ... [2020-10-15 03:52:24,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:52:23" (1/1) ... [2020-10-15 03:52:24,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:52:23" (1/1) ... [2020-10-15 03:52:24,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:52:24,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:52:24,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:52:24,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:52:24,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:52:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:52:24,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:52:24,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:52:24,094 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:52:24,095 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:52:24,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:52:24,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:52:24,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:52:24,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:52:24,095 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:52:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:52:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:52:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:52:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:52:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:52:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:52:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:52:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:52:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:52:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:52:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:52:24,098 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:52:24,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:52:24,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:52:24,889 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:52:24,889 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:52:24,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:52:24 BoogieIcfgContainer [2020-10-15 03:52:24,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:52:24,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:52:24,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:52:24,899 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:52:24,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:52:23" (1/3) ... [2020-10-15 03:52:24,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fae2815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:52:24, skipping insertion in model container [2020-10-15 03:52:24,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:52:23" (2/3) ... [2020-10-15 03:52:24,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fae2815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:52:24, skipping insertion in model container [2020-10-15 03:52:24,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:52:24" (3/3) ... [2020-10-15 03:52:24,903 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 03:52:24,913 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:52:24,921 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:52:24,935 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:52:24,960 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:52:24,960 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:52:24,960 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:52:24,961 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:52:24,961 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:52:24,961 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:52:24,961 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:52:24,961 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:52:24,981 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states. [2020-10-15 03:52:24,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-15 03:52:24,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:52:24,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:52:24,994 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:52:24,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:52:25,000 INFO L82 PathProgramCache]: Analyzing trace with hash 153946672, now seen corresponding path program 1 times [2020-10-15 03:52:25,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:52:25,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121527426] [2020-10-15 03:52:25,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:52:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:25,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:25,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:25,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:25,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:26,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:29,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:29,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 03:52:29,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:52:29,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4470 [2020-10-15 03:52:29,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:29,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:29,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:52:29,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:52:29,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 03:52:29,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-15 03:52:30,192 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-15 03:52:30,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:52:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:30,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:30,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:30,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:52:30,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:52:30,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:52:30,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:30,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:30,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:52:30,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:52:30,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:52:30,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:52:30,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:52:30,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121527426] [2020-10-15 03:52:30,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:52:30,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:52:30,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992749945] [2020-10-15 03:52:30,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:52:30,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:52:30,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:52:30,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:52:30,273 INFO L87 Difference]: Start difference. First operand 143 states. Second operand 8 states. [2020-10-15 03:52:30,648 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-15 03:52:31,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:52:31,656 INFO L93 Difference]: Finished difference Result 767 states and 1213 transitions. [2020-10-15 03:52:31,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:52:31,658 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2020-10-15 03:52:31,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:52:31,679 INFO L225 Difference]: With dead ends: 767 [2020-10-15 03:52:31,680 INFO L226 Difference]: Without dead ends: 639 [2020-10-15 03:52:31,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:52:31,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2020-10-15 03:52:31,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 237. [2020-10-15 03:52:31,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-10-15 03:52:31,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 354 transitions. [2020-10-15 03:52:31,767 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 354 transitions. Word has length 65 [2020-10-15 03:52:31,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:52:31,768 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 354 transitions. [2020-10-15 03:52:31,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:52:31,768 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 354 transitions. [2020-10-15 03:52:31,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-15 03:52:31,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:52:31,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:52:31,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:52:31,772 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:52:31,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:52:31,773 INFO L82 PathProgramCache]: Analyzing trace with hash 458846826, now seen corresponding path program 1 times [2020-10-15 03:52:31,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:52:31,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822435255] [2020-10-15 03:52:31,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:52:31,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:31,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:31,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:31,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:32,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:32,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:33,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:33,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 03:52:33,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:52:33,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1944 [2020-10-15 03:52:33,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:33,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:33,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:52:33,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-15 03:52:33,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 03:52:33,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:52:33,977 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-15 03:52:33,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:52:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:33,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:33,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:33,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:52:33,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:52:33,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:52:33,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:33,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:33,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:52:33,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:52:33,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:52:34,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:52:34,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:52:34,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822435255] [2020-10-15 03:52:34,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:52:34,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:52:34,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838139099] [2020-10-15 03:52:34,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:52:34,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:52:34,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:52:34,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:52:34,026 INFO L87 Difference]: Start difference. First operand 237 states and 354 transitions. Second operand 4 states. [2020-10-15 03:52:34,237 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-15 03:52:35,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:52:35,035 INFO L93 Difference]: Finished difference Result 601 states and 932 transitions. [2020-10-15 03:52:35,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:52:35,036 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-15 03:52:35,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:52:35,039 INFO L225 Difference]: With dead ends: 601 [2020-10-15 03:52:35,039 INFO L226 Difference]: Without dead ends: 403 [2020-10-15 03:52:35,042 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 [2020-10-15 03:52:35,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-10-15 03:52:35,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 401. [2020-10-15 03:52:35,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-10-15 03:52:35,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 614 transitions. [2020-10-15 03:52:35,071 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 614 transitions. Word has length 66 [2020-10-15 03:52:35,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:52:35,071 INFO L479 AbstractCegarLoop]: Abstraction has 401 states and 614 transitions. [2020-10-15 03:52:35,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:52:35,072 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 614 transitions. [2020-10-15 03:52:35,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 03:52:35,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:52:35,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:52:35,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:52:35,079 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:52:35,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:52:35,079 INFO L82 PathProgramCache]: Analyzing trace with hash -501984022, now seen corresponding path program 1 times [2020-10-15 03:52:35,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:52:35,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084812458] [2020-10-15 03:52:35,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:52:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:35,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:35,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:35,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:35,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:36,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:36,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 03:52:36,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:52:36,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1081 [2020-10-15 03:52:36,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:36,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:36,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:52:36,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-15 03:52:36,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 03:52:36,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:52:36,393 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-15 03:52:36,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:52:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:36,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:36,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:36,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:52:36,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:52:36,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:52:36,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:36,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:36,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:52:36,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:52:36,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:52:36,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:52:36,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:52:36,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084812458] [2020-10-15 03:52:36,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:52:36,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:52:36,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15449575] [2020-10-15 03:52:36,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:52:36,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:52:36,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:52:36,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:52:36,439 INFO L87 Difference]: Start difference. First operand 401 states and 614 transitions. Second operand 4 states. [2020-10-15 03:52:36,648 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-15 03:52:37,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:52:37,537 INFO L93 Difference]: Finished difference Result 1061 states and 1660 transitions. [2020-10-15 03:52:37,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:52:37,537 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-15 03:52:37,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:52:37,542 INFO L225 Difference]: With dead ends: 1061 [2020-10-15 03:52:37,542 INFO L226 Difference]: Without dead ends: 699 [2020-10-15 03:52:37,544 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 [2020-10-15 03:52:37,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2020-10-15 03:52:37,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 697. [2020-10-15 03:52:37,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-10-15 03:52:37,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1080 transitions. [2020-10-15 03:52:37,591 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1080 transitions. Word has length 67 [2020-10-15 03:52:37,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:52:37,591 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 1080 transitions. [2020-10-15 03:52:37,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:52:37,592 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1080 transitions. [2020-10-15 03:52:37,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 03:52:37,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:52:37,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:52:37,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:52:37,594 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:52:37,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:52:37,594 INFO L82 PathProgramCache]: Analyzing trace with hash 235571286, now seen corresponding path program 1 times [2020-10-15 03:52:37,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:52:37,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337577318] [2020-10-15 03:52:37,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:52:37,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:37,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:37,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:37,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:38,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:38,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 03:52:38,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:52:38,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 566 [2020-10-15 03:52:38,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:38,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:38,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:52:38,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-15 03:52:38,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 03:52:38,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:52:38,450 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-15 03:52:38,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:52:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:38,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:38,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:38,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:52:38,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:52:38,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:52:38,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:38,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:38,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:52:38,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:52:38,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:52:38,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:52:38,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:52:38,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337577318] [2020-10-15 03:52:38,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:52:38,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:52:38,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969037604] [2020-10-15 03:52:38,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:52:38,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:52:38,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:52:38,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:52:38,505 INFO L87 Difference]: Start difference. First operand 697 states and 1080 transitions. Second operand 4 states. [2020-10-15 03:52:38,699 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-15 03:52:39,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:52:39,394 INFO L93 Difference]: Finished difference Result 1885 states and 2954 transitions. [2020-10-15 03:52:39,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:52:39,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-15 03:52:39,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:52:39,402 INFO L225 Difference]: With dead ends: 1885 [2020-10-15 03:52:39,402 INFO L226 Difference]: Without dead ends: 1227 [2020-10-15 03:52:39,405 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 [2020-10-15 03:52:39,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2020-10-15 03:52:39,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1225. [2020-10-15 03:52:39,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2020-10-15 03:52:39,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1904 transitions. [2020-10-15 03:52:39,484 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1904 transitions. Word has length 68 [2020-10-15 03:52:39,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:52:39,484 INFO L479 AbstractCegarLoop]: Abstraction has 1225 states and 1904 transitions. [2020-10-15 03:52:39,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:52:39,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1904 transitions. [2020-10-15 03:52:39,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 03:52:39,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:52:39,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:52:39,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:52:39,486 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:52:39,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:52:39,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1998691807, now seen corresponding path program 1 times [2020-10-15 03:52:39,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:52:39,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882314313] [2020-10-15 03:52:39,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:52:39,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:39,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:39,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:39,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:39,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 03:52:39,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:52:39,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-15 03:52:39,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:39,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:39,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:52:39,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-15 03:52:39,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 03:52:39,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:52:39,956 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-15 03:52:39,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:52:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:39,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:39,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:39,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:52:39,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:52:39,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:52:39,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:39,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:39,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:52:39,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:52:39,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:52:39,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:52:39,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:52:39,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882314313] [2020-10-15 03:52:39,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:52:39,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:52:39,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429827580] [2020-10-15 03:52:39,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:52:39,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:52:39,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:52:39,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:52:39,996 INFO L87 Difference]: Start difference. First operand 1225 states and 1904 transitions. Second operand 4 states. [2020-10-15 03:52:40,160 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-15 03:52:40,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:52:40,899 INFO L93 Difference]: Finished difference Result 3341 states and 5218 transitions. [2020-10-15 03:52:40,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:52:40,900 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-10-15 03:52:40,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:52:40,911 INFO L225 Difference]: With dead ends: 3341 [2020-10-15 03:52:40,911 INFO L226 Difference]: Without dead ends: 2155 [2020-10-15 03:52:40,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:52:40,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states. [2020-10-15 03:52:41,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 2153. [2020-10-15 03:52:41,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2020-10-15 03:52:41,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 3336 transitions. [2020-10-15 03:52:41,038 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 3336 transitions. Word has length 69 [2020-10-15 03:52:41,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:52:41,039 INFO L479 AbstractCegarLoop]: Abstraction has 2153 states and 3336 transitions. [2020-10-15 03:52:41,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:52:41,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 3336 transitions. [2020-10-15 03:52:41,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:52:41,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:52:41,040 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] [2020-10-15 03:52:41,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:52:41,041 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:52:41,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:52:41,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1058730260, now seen corresponding path program 1 times [2020-10-15 03:52:41,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:52:41,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769739715] [2020-10-15 03:52:41,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:52:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:41,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:41,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:41,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:41,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:52:41,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:52:41,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-10-15 03:52:41,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:41,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:41,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:52:41,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:52:41,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 03:52:41,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:52:41,844 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-15 03:52:41,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:52:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:41,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:41,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:41,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:52:41,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:52:41,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-15 03:52:41,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:41,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:41,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:52:41,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:52:41,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:52:41,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:52:41,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:52:41,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769739715] [2020-10-15 03:52:41,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:52:41,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:52:41,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135164261] [2020-10-15 03:52:41,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:52:41,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:52:41,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:52:41,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:52:41,951 INFO L87 Difference]: Start difference. First operand 2153 states and 3336 transitions. Second operand 8 states. [2020-10-15 03:52:43,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:52:43,810 INFO L93 Difference]: Finished difference Result 11283 states and 17453 transitions. [2020-10-15 03:52:43,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 03:52:43,810 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-15 03:52:43,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:52:43,853 INFO L225 Difference]: With dead ends: 11283 [2020-10-15 03:52:43,853 INFO L226 Difference]: Without dead ends: 9169 [2020-10-15 03:52:43,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:52:43,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9169 states. [2020-10-15 03:52:44,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9169 to 9161. [2020-10-15 03:52:44,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9161 states. [2020-10-15 03:52:44,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9161 states to 9161 states and 14120 transitions. [2020-10-15 03:52:44,431 INFO L78 Accepts]: Start accepts. Automaton has 9161 states and 14120 transitions. Word has length 70 [2020-10-15 03:52:44,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:52:44,431 INFO L479 AbstractCegarLoop]: Abstraction has 9161 states and 14120 transitions. [2020-10-15 03:52:44,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:52:44,432 INFO L276 IsEmpty]: Start isEmpty. Operand 9161 states and 14120 transitions. [2020-10-15 03:52:44,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:52:44,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:52:44,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:52:44,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:52:44,434 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:52:44,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:52:44,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1493686132, now seen corresponding path program 1 times [2020-10-15 03:52:44,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:52:44,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899571527] [2020-10-15 03:52:44,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:52:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:44,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:44,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:44,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:44,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:45,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:45,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:52:45,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:52:45,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 910 [2020-10-15 03:52:45,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:45,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:45,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:52:45,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:52:45,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 03:52:45,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:52:45,519 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-15 03:52:45,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:52:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:45,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:45,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:45,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:52:45,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:52:45,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:52:45,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:45,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:45,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:52:45,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:52:45,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:52:45,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:52:45,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:52:45,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899571527] [2020-10-15 03:52:45,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:52:45,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:52:45,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47919789] [2020-10-15 03:52:45,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:52:45,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:52:45,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:52:45,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:52:45,551 INFO L87 Difference]: Start difference. First operand 9161 states and 14120 transitions. Second operand 4 states. [2020-10-15 03:52:45,717 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-15 03:52:47,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:52:47,258 INFO L93 Difference]: Finished difference Result 25757 states and 39562 transitions. [2020-10-15 03:52:47,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:52:47,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-10-15 03:52:47,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:52:47,333 INFO L225 Difference]: With dead ends: 25757 [2020-10-15 03:52:47,333 INFO L226 Difference]: Without dead ends: 16635 [2020-10-15 03:52:47,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:52:47,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16635 states. [2020-10-15 03:52:48,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16635 to 16489. [2020-10-15 03:52:48,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16489 states. [2020-10-15 03:52:48,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16489 states to 16489 states and 25048 transitions. [2020-10-15 03:52:48,541 INFO L78 Accepts]: Start accepts. Automaton has 16489 states and 25048 transitions. Word has length 71 [2020-10-15 03:52:48,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:52:48,541 INFO L479 AbstractCegarLoop]: Abstraction has 16489 states and 25048 transitions. [2020-10-15 03:52:48,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:52:48,542 INFO L276 IsEmpty]: Start isEmpty. Operand 16489 states and 25048 transitions. [2020-10-15 03:52:48,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:52:48,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:52:48,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:52:48,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:52:48,544 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:52:48,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:52:48,544 INFO L82 PathProgramCache]: Analyzing trace with hash 899092365, now seen corresponding path program 1 times [2020-10-15 03:52:48,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:52:48,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772405869] [2020-10-15 03:52:48,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:52:48,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:48,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:48,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:48,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:48,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:52:48,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:52:48,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-15 03:52:48,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:48,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:48,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:52:48,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-15 03:52:48,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 03:52:48,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:52:49,140 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-15 03:52:49,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:52:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:49,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:49,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:49,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:52:49,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:52:49,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:52:49,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:49,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:49,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:52:49,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:52:49,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:52:49,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:52:49,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:52:49,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772405869] [2020-10-15 03:52:49,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:52:49,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:52:49,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319003510] [2020-10-15 03:52:49,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:52:49,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:52:49,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:52:49,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:52:49,203 INFO L87 Difference]: Start difference. First operand 16489 states and 25048 transitions. Second operand 4 states. [2020-10-15 03:52:49,368 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-15 03:52:51,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:52:51,362 INFO L93 Difference]: Finished difference Result 32016 states and 48830 transitions. [2020-10-15 03:52:51,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:52:51,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-10-15 03:52:51,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:52:51,419 INFO L225 Difference]: With dead ends: 32016 [2020-10-15 03:52:51,419 INFO L226 Difference]: Without dead ends: 22893 [2020-10-15 03:52:51,440 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 [2020-10-15 03:52:51,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22893 states. [2020-10-15 03:52:53,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22893 to 22891. [2020-10-15 03:52:53,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22891 states. [2020-10-15 03:52:53,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22891 states to 22891 states and 34586 transitions. [2020-10-15 03:52:53,317 INFO L78 Accepts]: Start accepts. Automaton has 22891 states and 34586 transitions. Word has length 71 [2020-10-15 03:52:53,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:52:53,317 INFO L479 AbstractCegarLoop]: Abstraction has 22891 states and 34586 transitions. [2020-10-15 03:52:53,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:52:53,317 INFO L276 IsEmpty]: Start isEmpty. Operand 22891 states and 34586 transitions. [2020-10-15 03:52:53,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:52:53,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:52:53,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:52:53,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:52:53,319 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:52:53,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:52:53,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1628458525, now seen corresponding path program 1 times [2020-10-15 03:52:53,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:52:53,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896088086] [2020-10-15 03:52:53,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:52:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:53,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:53,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:53,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:53,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:52:53,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:52:53,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-15 03:52:53,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:53,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:53,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:52:53,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:52:53,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 03:52:53,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:52:53,957 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-15 03:52:53,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:52:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:53,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:53,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:53,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:52:53,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:52:53,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 03:52:53,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:53,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:53,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:52:53,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:52:53,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:52:53,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:52:54,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:52:54,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896088086] [2020-10-15 03:52:54,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:52:54,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:52:54,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686797450] [2020-10-15 03:52:54,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:52:54,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:52:54,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:52:54,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:52:54,010 INFO L87 Difference]: Start difference. First operand 22891 states and 34586 transitions. Second operand 6 states. [2020-10-15 03:52:54,196 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-15 03:52:56,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:52:56,492 INFO L93 Difference]: Finished difference Result 68215 states and 102924 transitions. [2020-10-15 03:52:56,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:52:56,493 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-10-15 03:52:56,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:52:56,608 INFO L225 Difference]: With dead ends: 68215 [2020-10-15 03:52:56,608 INFO L226 Difference]: Without dead ends: 45365 [2020-10-15 03:52:56,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:52:56,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45365 states. [2020-10-15 03:52:58,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45365 to 45363. [2020-10-15 03:52:58,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45363 states. [2020-10-15 03:52:58,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45363 states to 45363 states and 68002 transitions. [2020-10-15 03:52:58,946 INFO L78 Accepts]: Start accepts. Automaton has 45363 states and 68002 transitions. Word has length 72 [2020-10-15 03:52:58,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:52:58,946 INFO L479 AbstractCegarLoop]: Abstraction has 45363 states and 68002 transitions. [2020-10-15 03:52:58,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:52:58,946 INFO L276 IsEmpty]: Start isEmpty. Operand 45363 states and 68002 transitions. [2020-10-15 03:52:58,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:52:58,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:52:58,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:52:58,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:52:58,948 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:52:58,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:52:58,948 INFO L82 PathProgramCache]: Analyzing trace with hash 141513182, now seen corresponding path program 1 times [2020-10-15 03:52:58,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:52:58,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603467576] [2020-10-15 03:52:58,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:52:58,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:58,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:59,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:59,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:52:59,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:52:59,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-15 03:52:59,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:59,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:59,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:52:59,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-15 03:52:59,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 03:52:59,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:52:59,411 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-15 03:52:59,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:52:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:59,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:59,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:59,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:52:59,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:52:59,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-15 03:52:59,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:59,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:59,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:52:59,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:52:59,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:52:59,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:52:59,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:52:59,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603467576] [2020-10-15 03:52:59,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:52:59,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:52:59,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814346949] [2020-10-15 03:52:59,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:52:59,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:52:59,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:52:59,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:52:59,464 INFO L87 Difference]: Start difference. First operand 45363 states and 68002 transitions. Second operand 5 states. [2020-10-15 03:53:04,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:53:04,312 INFO L93 Difference]: Finished difference Result 84457 states and 126086 transitions. [2020-10-15 03:53:04,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:53:04,313 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-15 03:53:04,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:53:04,505 INFO L225 Difference]: With dead ends: 84457 [2020-10-15 03:53:04,506 INFO L226 Difference]: Without dead ends: 84455 [2020-10-15 03:53:04,532 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 [2020-10-15 03:53:04,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84455 states. [2020-10-15 03:53:07,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84455 to 46899. [2020-10-15 03:53:07,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46899 states. [2020-10-15 03:53:07,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46899 states to 46899 states and 69378 transitions. [2020-10-15 03:53:07,127 INFO L78 Accepts]: Start accepts. Automaton has 46899 states and 69378 transitions. Word has length 72 [2020-10-15 03:53:07,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:53:07,127 INFO L479 AbstractCegarLoop]: Abstraction has 46899 states and 69378 transitions. [2020-10-15 03:53:07,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:53:07,128 INFO L276 IsEmpty]: Start isEmpty. Operand 46899 states and 69378 transitions. [2020-10-15 03:53:07,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-15 03:53:07,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:53:07,147 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-15 03:53:07,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:53:07,147 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:53:07,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:53:07,148 INFO L82 PathProgramCache]: Analyzing trace with hash -222889012, now seen corresponding path program 1 times [2020-10-15 03:53:07,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:53:07,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432332940] [2020-10-15 03:53:07,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:53:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:07,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:07,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:08,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:09,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:09,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-15 03:53:09,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:53:09,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2280 [2020-10-15 03:53:09,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:09,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:09,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:53:09,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:53:09,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-15 03:53:09,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:53:09,679 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-15 03:53:09,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:53:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:09,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:09,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:09,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:53:09,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:53:09,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:53:09,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:09,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:09,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:53:09,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:53:09,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:53:09,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:53:09,724 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 03:53:09,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432332940] [2020-10-15 03:53:09,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:53:09,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 03:53:09,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29143378] [2020-10-15 03:53:09,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:53:09,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:53:09,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:53:09,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:53:09,727 INFO L87 Difference]: Start difference. First operand 46899 states and 69378 transitions. Second operand 5 states. [2020-10-15 03:53:09,971 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-15 03:53:15,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:53:15,523 INFO L93 Difference]: Finished difference Result 109913 states and 162981 transitions. [2020-10-15 03:53:15,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:53:15,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-15 03:53:15,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:53:15,686 INFO L225 Difference]: With dead ends: 109913 [2020-10-15 03:53:15,687 INFO L226 Difference]: Without dead ends: 77847 [2020-10-15 03:53:15,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:53:15,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77847 states. [2020-10-15 03:53:19,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77847 to 77523. [2020-10-15 03:53:19,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77523 states. [2020-10-15 03:53:20,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77523 states to 77523 states and 113954 transitions. [2020-10-15 03:53:20,071 INFO L78 Accepts]: Start accepts. Automaton has 77523 states and 113954 transitions. Word has length 100 [2020-10-15 03:53:20,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:53:20,072 INFO L479 AbstractCegarLoop]: Abstraction has 77523 states and 113954 transitions. [2020-10-15 03:53:20,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:53:20,072 INFO L276 IsEmpty]: Start isEmpty. Operand 77523 states and 113954 transitions. [2020-10-15 03:53:20,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-15 03:53:20,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:53:20,089 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-15 03:53:20,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:53:20,090 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:53:20,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:53:20,090 INFO L82 PathProgramCache]: Analyzing trace with hash 222404232, now seen corresponding path program 1 times [2020-10-15 03:53:20,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:53:20,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101673735] [2020-10-15 03:53:20,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:53:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:20,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:20,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:20,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:21,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:25,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:25,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-15 03:53:25,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:53:25,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5539 [2020-10-15 03:53:25,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:25,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:25,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:53:25,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:53:25,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-15 03:53:25,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:53:25,883 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-15 03:53:25,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:53:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:25,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:25,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:25,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:53:25,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:53:25,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:53:25,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:25,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:25,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:53:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:53:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:53:25,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 03:53:25,959 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-15 03:53:25,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101673735] [2020-10-15 03:53:25,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:53:25,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 03:53:25,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089358562] [2020-10-15 03:53:25,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:53:25,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:53:25,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:53:25,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:53:25,973 INFO L87 Difference]: Start difference. First operand 77523 states and 113954 transitions. Second operand 8 states. [2020-10-15 03:53:26,259 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-15 03:53:37,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:53:37,683 INFO L93 Difference]: Finished difference Result 268479 states and 399300 transitions. [2020-10-15 03:53:37,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:53:37,687 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 100 [2020-10-15 03:53:37,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:53:40,202 INFO L225 Difference]: With dead ends: 268479 [2020-10-15 03:53:40,203 INFO L226 Difference]: Without dead ends: 231245 [2020-10-15 03:53:40,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:53:40,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231245 states. [2020-10-15 03:53:48,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231245 to 136323. [2020-10-15 03:53:48,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136323 states. [2020-10-15 03:53:48,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136323 states to 136323 states and 200802 transitions. [2020-10-15 03:53:48,287 INFO L78 Accepts]: Start accepts. Automaton has 136323 states and 200802 transitions. Word has length 100 [2020-10-15 03:53:48,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:53:48,287 INFO L479 AbstractCegarLoop]: Abstraction has 136323 states and 200802 transitions. [2020-10-15 03:53:48,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:53:48,287 INFO L276 IsEmpty]: Start isEmpty. Operand 136323 states and 200802 transitions. [2020-10-15 03:53:48,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-15 03:53:48,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:53:48,305 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-15 03:53:48,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:53:48,305 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:53:48,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:53:48,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1256046617, now seen corresponding path program 1 times [2020-10-15 03:53:48,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:53:48,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087115419] [2020-10-15 03:53:48,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:53:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:48,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:48,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:48,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:48,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:48,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:48,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:49,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:52,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:53,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:53,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-15 03:53:53,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:53:53,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:53:53,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:53,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:53,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:53:53,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:53:53,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-15 03:53:53,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:53:53,544 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-15 03:53:53,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:53:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:53,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:53,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:53,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:53:53,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:53:53,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:53:53,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:53,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:53,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:53:53,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:53:53,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:53:53,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:53:53,588 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-15 03:53:53,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087115419] [2020-10-15 03:53:53,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:53:53,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 03:53:53,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102361128] [2020-10-15 03:53:53,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:53:53,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:53:53,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:53:53,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:53:53,591 INFO L87 Difference]: Start difference. First operand 136323 states and 200802 transitions. Second operand 8 states. [2020-10-15 03:53:53,803 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-15 03:54:08,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:54:08,695 INFO L93 Difference]: Finished difference Result 287751 states and 425316 transitions. [2020-10-15 03:54:08,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:54:08,697 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 100 [2020-10-15 03:54:08,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:54:09,194 INFO L225 Difference]: With dead ends: 287751 [2020-10-15 03:54:09,195 INFO L226 Difference]: Without dead ends: 254341 [2020-10-15 03:54:09,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:54:09,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254341 states. [2020-10-15 03:54:22,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254341 to 153379. [2020-10-15 03:54:22,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153379 states. [2020-10-15 03:54:23,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153379 states to 153379 states and 225922 transitions. [2020-10-15 03:54:23,181 INFO L78 Accepts]: Start accepts. Automaton has 153379 states and 225922 transitions. Word has length 100 [2020-10-15 03:54:23,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:54:23,182 INFO L479 AbstractCegarLoop]: Abstraction has 153379 states and 225922 transitions. [2020-10-15 03:54:23,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:54:23,182 INFO L276 IsEmpty]: Start isEmpty. Operand 153379 states and 225922 transitions. [2020-10-15 03:54:23,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-15 03:54:23,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:54:23,198 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-15 03:54:23,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:54:23,199 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:54:23,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:54:23,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1742882448, now seen corresponding path program 1 times [2020-10-15 03:54:23,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:54:23,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183908886] [2020-10-15 03:54:23,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:54:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:54:23,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:23,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:23,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:23,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:24,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:24,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:24,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:25,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:28,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:54:28,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-15 03:54:28,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:54:28,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 03:54:28,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:54:28,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:54:28,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:54:28,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:54:28,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-15 03:54:28,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:54:28,466 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-15 03:54:28,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:54:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:54:28,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:28,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:54:28,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:54:28,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:54:28,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:54:28,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:54:28,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:54:28,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:54:28,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:54:28,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:54:28,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:54:28,516 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-15 03:54:28,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183908886] [2020-10-15 03:54:28,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:54:28,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 03:54:28,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92944423] [2020-10-15 03:54:28,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:54:28,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:54:28,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:54:28,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:54:28,518 INFO L87 Difference]: Start difference. First operand 153379 states and 225922 transitions. Second operand 8 states. [2020-10-15 03:54:28,741 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-15 03:54:44,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:54:44,818 INFO L93 Difference]: Finished difference Result 280373 states and 413875 transitions. [2020-10-15 03:54:44,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:54:44,819 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 100 [2020-10-15 03:54:44,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:54:45,266 INFO L225 Difference]: With dead ends: 280373 [2020-10-15 03:54:45,266 INFO L226 Difference]: Without dead ends: 263187 [2020-10-15 03:54:45,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:54:45,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263187 states. [2020-10-15 03:55:00,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263187 to 162147. [2020-10-15 03:55:00,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162147 states. [2020-10-15 03:55:00,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162147 states to 162147 states and 238802 transitions. [2020-10-15 03:55:00,428 INFO L78 Accepts]: Start accepts. Automaton has 162147 states and 238802 transitions. Word has length 100 [2020-10-15 03:55:00,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:55:00,428 INFO L479 AbstractCegarLoop]: Abstraction has 162147 states and 238802 transitions. [2020-10-15 03:55:00,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:55:00,429 INFO L276 IsEmpty]: Start isEmpty. Operand 162147 states and 238802 transitions. [2020-10-15 03:55:00,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-15 03:55:00,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:55:00,441 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-15 03:55:00,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:55:00,441 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:55:00,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:55:00,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1116588883, now seen corresponding path program 1 times [2020-10-15 03:55:00,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:55:00,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464932918] [2020-10-15 03:55:00,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:55:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:00,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:00,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:00,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:00,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:00,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:01,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:01,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:01,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:05,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:05,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-15 03:55:05,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:55:05,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:55:05,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:05,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:05,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:55:05,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:55:05,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-15 03:55:05,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:55:05,777 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-15 03:55:05,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:55:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:05,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:05,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:05,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:55:05,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:55:05,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:55:05,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:05,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:05,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:55:05,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:55:05,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:55:05,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:55:05,839 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:55:05,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464932918] [2020-10-15 03:55:05,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:55:05,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 03:55:05,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807229447] [2020-10-15 03:55:05,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:55:05,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:55:05,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:55:05,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:55:05,841 INFO L87 Difference]: Start difference. First operand 162147 states and 238802 transitions. Second operand 8 states. [2020-10-15 03:55:06,231 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-15 03:55:43,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:55:43,640 INFO L93 Difference]: Finished difference Result 635214 states and 931235 transitions. [2020-10-15 03:55:43,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:55:43,640 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 100 [2020-10-15 03:55:43,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:55:44,350 INFO L225 Difference]: With dead ends: 635214 [2020-10-15 03:55:44,350 INFO L226 Difference]: Without dead ends: 473108 [2020-10-15 03:55:44,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:55:44,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473108 states.