/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.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:56:44,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:56:44,983 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:56:45,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:56:45,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:56:45,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:56:45,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:56:45,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:56:45,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:56:45,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:56:45,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:56:45,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:56:45,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:56:45,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:56:45,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:56:45,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:56:45,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:56:45,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:56:45,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:56:45,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:56:45,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:56:45,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:56:45,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:56:45,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:56:45,079 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:56:45,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:56:45,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:56:45,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:56:45,081 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:56:45,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:56:45,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:56:45,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:56:45,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:56:45,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:56:45,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:56:45,091 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:56:45,092 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:56:45,092 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:56:45,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:56:45,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:56:45,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:56:45,095 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 03:56:45,137 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:56:45,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:56:45,138 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:56:45,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:56:45,138 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:56:45,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:56:45,139 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:56:45,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:56:45,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:56:45,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:56:45,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:56:45,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:56:45,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:56:45,140 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:56:45,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:56:45,140 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:56:45,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:56:45,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:56:45,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:56:45,142 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:56:45,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:56:45,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:56:45,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:56:45,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:56:45,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:56:45,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:56:45,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:56:45,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:56:45,144 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:56:45,144 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 03:56:45,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:56:45,460 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:56:45,464 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:56:45,465 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:56:45,465 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:56:45,466 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:56:45,518 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/781a4e192/bae05037110b4d6cac9292da5817dbd5/FLAG0e65a62b6 [2020-10-15 03:56:45,973 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:56:45,974 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:56:45,993 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/781a4e192/bae05037110b4d6cac9292da5817dbd5/FLAG0e65a62b6 [2020-10-15 03:56:46,264 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/781a4e192/bae05037110b4d6cac9292da5817dbd5 [2020-10-15 03:56:46,273 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:56:46,274 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:56:46,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:56:46,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:56:46,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:56:46,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:56:46" (1/1) ... [2020-10-15 03:56:46,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e42023b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:56:46, skipping insertion in model container [2020-10-15 03:56:46,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:56:46" (1/1) ... [2020-10-15 03:56:46,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:56:46,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:56:46,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:56:46,708 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:56:46,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:56:46,928 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:56:46,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:56:46 WrapperNode [2020-10-15 03:56:46,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:56:46,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:56:46,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:56:46,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:56:46,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:56:46" (1/1) ... [2020-10-15 03:56:46,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:56:46" (1/1) ... [2020-10-15 03:56:46,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:56:46" (1/1) ... [2020-10-15 03:56:46,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:56:46" (1/1) ... [2020-10-15 03:56:46,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:56:46" (1/1) ... [2020-10-15 03:56:46,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:56:46" (1/1) ... [2020-10-15 03:56:46,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:56:46" (1/1) ... [2020-10-15 03:56:47,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:56:47,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:56:47,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:56:47,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:56:47,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:56:46" (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 03:56:47,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:56:47,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:56:47,076 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:56:47,077 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:56:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:56:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:56:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:56:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:56:47,078 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:56:47,078 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:56:47,078 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:56:47,078 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:56:47,078 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:56:47,079 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:56:47,079 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:56:47,079 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:56:47,079 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:56:47,079 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:56:47,079 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:56:47,080 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:56:47,080 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:56:47,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:56:47,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:56:48,115 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:56:48,115 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:56:48,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:56:48 BoogieIcfgContainer [2020-10-15 03:56:48,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:56:48,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:56:48,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:56:48,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:56:48,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:56:46" (1/3) ... [2020-10-15 03:56:48,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5495eae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:56:48, skipping insertion in model container [2020-10-15 03:56:48,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:56:46" (2/3) ... [2020-10-15 03:56:48,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5495eae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:56:48, skipping insertion in model container [2020-10-15 03:56:48,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:56:48" (3/3) ... [2020-10-15 03:56:48,129 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:56:48,139 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:56:48,147 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:56:48,160 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:56:48,185 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:56:48,186 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:56:48,186 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:56:48,186 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:56:48,186 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:56:48,187 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:56:48,187 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:56:48,187 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:56:48,210 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states. [2020-10-15 03:56:48,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 03:56:48,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:56:48,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:56:48,222 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:56:48,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:56:48,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1170257874, now seen corresponding path program 1 times [2020-10-15 03:56:48,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:56:48,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523961937] [2020-10-15 03:56:48,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:56:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:48,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:49,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:49,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:51,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:51,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 03:56:51,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:56:51,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2877 [2020-10-15 03:56:51,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:51,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:51,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:56:51,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:56:51,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-15 03:56:51,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 03:56:51,818 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:56:51,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:56:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:51,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:51,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:51,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:56:51,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:56:51,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-15 03:56:51,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:51,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:51,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:56:51,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:56:51,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:56:51,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:56:51,927 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 03:56:51,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523961937] [2020-10-15 03:56:51,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:56:51,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:56:51,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139184860] [2020-10-15 03:56:51,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:56:51,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:56:51,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:56:51,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:56:51,966 INFO L87 Difference]: Start difference. First operand 220 states. Second operand 8 states. [2020-10-15 03:56:52,317 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-15 03:56:53,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:56:53,805 INFO L93 Difference]: Finished difference Result 878 states and 1413 transitions. [2020-10-15 03:56:53,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:56:53,807 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-10-15 03:56:53,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:56:53,827 INFO L225 Difference]: With dead ends: 878 [2020-10-15 03:56:53,828 INFO L226 Difference]: Without dead ends: 751 [2020-10-15 03:56:53,832 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 03:56:53,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2020-10-15 03:56:53,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 332. [2020-10-15 03:56:53,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-10-15 03:56:53,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 497 transitions. [2020-10-15 03:56:53,909 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 497 transitions. Word has length 84 [2020-10-15 03:56:53,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:56:53,910 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 497 transitions. [2020-10-15 03:56:53,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:56:53,910 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 497 transitions. [2020-10-15 03:56:53,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 03:56:53,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:56:53,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:56:53,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:56:53,914 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:56:53,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:56:53,915 INFO L82 PathProgramCache]: Analyzing trace with hash 2097746024, now seen corresponding path program 1 times [2020-10-15 03:56:53,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:56:53,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782284472] [2020-10-15 03:56:53,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:56:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:53,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:54,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:55,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:55,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 03:56:55,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:56:55,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1532 [2020-10-15 03:56:55,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:55,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:55,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:56:55,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:56:55,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 03:56:55,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:56:55,844 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:56:55,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:56:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:55,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:55,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:55,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:56:55,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:56:55,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:56:55,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:55,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:55,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:56:55,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:56:55,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:56:55,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:56:55,912 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 03:56:55,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782284472] [2020-10-15 03:56:55,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:56:55,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:56:55,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869214458] [2020-10-15 03:56:55,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:56:55,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:56:55,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:56:55,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:56:55,917 INFO L87 Difference]: Start difference. First operand 332 states and 497 transitions. Second operand 8 states. [2020-10-15 03:56:58,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:56:58,652 INFO L93 Difference]: Finished difference Result 1428 states and 2214 transitions. [2020-10-15 03:56:58,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 03:56:58,654 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 85 [2020-10-15 03:56:58,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:56:58,661 INFO L225 Difference]: With dead ends: 1428 [2020-10-15 03:56:58,661 INFO L226 Difference]: Without dead ends: 1180 [2020-10-15 03:56:58,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:56:58,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2020-10-15 03:56:58,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1172. [2020-10-15 03:56:58,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1172 states. [2020-10-15 03:56:58,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1810 transitions. [2020-10-15 03:56:58,772 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1810 transitions. Word has length 85 [2020-10-15 03:56:58,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:56:58,773 INFO L479 AbstractCegarLoop]: Abstraction has 1172 states and 1810 transitions. [2020-10-15 03:56:58,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:56:58,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1810 transitions. [2020-10-15 03:56:58,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 03:56:58,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:56:58,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:56:58,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:56:58,783 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:56:58,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:56:58,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1493181435, now seen corresponding path program 1 times [2020-10-15 03:56:58,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:56:58,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928546079] [2020-10-15 03:56:58,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:56:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:58,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:59,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:59,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:59,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 03:56:59,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:56:59,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 623 [2020-10-15 03:56:59,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:59,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:59,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:56:59,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:56:59,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 03:56:59,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:56:59,686 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:56:59,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:56:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:59,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:59,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:59,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:56:59,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:56:59,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 03:56:59,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:59,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:59,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:56:59,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:56:59,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:56:59,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:56:59,748 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 03:56:59,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928546079] [2020-10-15 03:56:59,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:56:59,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:56:59,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805490420] [2020-10-15 03:56:59,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:56:59,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:56:59,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:56:59,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:56:59,752 INFO L87 Difference]: Start difference. First operand 1172 states and 1810 transitions. Second operand 6 states. [2020-10-15 03:56:59,988 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:57:01,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:57:01,035 INFO L93 Difference]: Finished difference Result 3211 states and 5014 transitions. [2020-10-15 03:57:01,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:57:01,036 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-15 03:57:01,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:57:01,048 INFO L225 Difference]: With dead ends: 3211 [2020-10-15 03:57:01,048 INFO L226 Difference]: Without dead ends: 2085 [2020-10-15 03:57:01,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:57:01,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2085 states. [2020-10-15 03:57:01,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 2083. [2020-10-15 03:57:01,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2083 states. [2020-10-15 03:57:01,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 3233 transitions. [2020-10-15 03:57:01,205 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 3233 transitions. Word has length 86 [2020-10-15 03:57:01,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:57:01,206 INFO L479 AbstractCegarLoop]: Abstraction has 2083 states and 3233 transitions. [2020-10-15 03:57:01,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:57:01,206 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 3233 transitions. [2020-10-15 03:57:01,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 03:57:01,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:57:01,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:57:01,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:57:01,212 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:57:01,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:57:01,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1984786538, now seen corresponding path program 1 times [2020-10-15 03:57:01,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:57:01,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749379880] [2020-10-15 03:57:01,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:57:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:01,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:01,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:01,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:01,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 03:57:01,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:57:01,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 669 [2020-10-15 03:57:01,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:01,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:01,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:57:01,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:57:01,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 03:57:01,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:57:02,173 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:57:02,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:57:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:02,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:02,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:02,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:57:02,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:57:02,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-15 03:57:02,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:02,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:02,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:57:02,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:57:02,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:57:02,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:57:02,251 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 03:57:02,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749379880] [2020-10-15 03:57:02,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:57:02,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:57:02,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215569548] [2020-10-15 03:57:02,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:57:02,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:57:02,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:57:02,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:57:02,254 INFO L87 Difference]: Start difference. First operand 2083 states and 3233 transitions. Second operand 6 states. [2020-10-15 03:57:02,428 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:57:03,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:57:03,661 INFO L93 Difference]: Finished difference Result 5840 states and 9114 transitions. [2020-10-15 03:57:03,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:57:03,662 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-15 03:57:03,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:57:03,683 INFO L225 Difference]: With dead ends: 5840 [2020-10-15 03:57:03,683 INFO L226 Difference]: Without dead ends: 3819 [2020-10-15 03:57:03,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:57:03,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3819 states. [2020-10-15 03:57:04,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3819 to 3817. [2020-10-15 03:57:04,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3817 states. [2020-10-15 03:57:04,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3817 states to 3817 states and 5916 transitions. [2020-10-15 03:57:04,045 INFO L78 Accepts]: Start accepts. Automaton has 3817 states and 5916 transitions. Word has length 86 [2020-10-15 03:57:04,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:57:04,045 INFO L479 AbstractCegarLoop]: Abstraction has 3817 states and 5916 transitions. [2020-10-15 03:57:04,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:57:04,046 INFO L276 IsEmpty]: Start isEmpty. Operand 3817 states and 5916 transitions. [2020-10-15 03:57:04,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 03:57:04,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:57:04,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:57:04,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:57:04,051 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:57:04,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:57:04,051 INFO L82 PathProgramCache]: Analyzing trace with hash 453259047, now seen corresponding path program 1 times [2020-10-15 03:57:04,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:57:04,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348017841] [2020-10-15 03:57:04,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:57:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:04,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:04,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:04,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:04,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 03:57:04,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:57:04,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 606 [2020-10-15 03:57:04,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:04,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:04,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:57:04,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:57:04,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-15 03:57:04,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:57:04,886 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:57:04,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:57:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:04,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:04,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:04,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:57:04,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:57:04,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 03:57:04,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:04,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:04,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:57:04,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:57:04,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:57:04,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:57:04,961 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 03:57:04,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348017841] [2020-10-15 03:57:04,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:57:04,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:57:04,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031434771] [2020-10-15 03:57:04,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:57:04,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:57:04,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:57:04,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:57:04,964 INFO L87 Difference]: Start difference. First operand 3817 states and 5916 transitions. Second operand 6 states. [2020-10-15 03:57:05,190 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:57:06,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:57:06,504 INFO L93 Difference]: Finished difference Result 10827 states and 16816 transitions. [2020-10-15 03:57:06,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:57:06,504 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-15 03:57:06,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:57:06,540 INFO L225 Difference]: With dead ends: 10827 [2020-10-15 03:57:06,540 INFO L226 Difference]: Without dead ends: 7095 [2020-10-15 03:57:06,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:57:06,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7095 states. [2020-10-15 03:57:07,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7095 to 7093. [2020-10-15 03:57:07,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7093 states. [2020-10-15 03:57:07,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7093 states to 7093 states and 10940 transitions. [2020-10-15 03:57:07,062 INFO L78 Accepts]: Start accepts. Automaton has 7093 states and 10940 transitions. Word has length 86 [2020-10-15 03:57:07,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:57:07,063 INFO L479 AbstractCegarLoop]: Abstraction has 7093 states and 10940 transitions. [2020-10-15 03:57:07,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:57:07,063 INFO L276 IsEmpty]: Start isEmpty. Operand 7093 states and 10940 transitions. [2020-10-15 03:57:07,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 03:57:07,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:57:07,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:57:07,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:57:07,069 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:57:07,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:57:07,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1814791496, now seen corresponding path program 1 times [2020-10-15 03:57:07,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:57:07,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446576299] [2020-10-15 03:57:07,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:57:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:07,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:07,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:07,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:07,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 03:57:07,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:57:07,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 529 [2020-10-15 03:57:07,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:07,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:07,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:57:07,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:57:07,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 03:57:07,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:57:07,806 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:57:07,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:57:07,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:07,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:07,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:07,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:57:07,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:57:07,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 03:57:07,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:07,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:07,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:57:07,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:57:07,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:57:07,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:57:07,858 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 03:57:07,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446576299] [2020-10-15 03:57:07,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:57:07,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:57:07,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680376058] [2020-10-15 03:57:07,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:57:07,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:57:07,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:57:07,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:57:07,861 INFO L87 Difference]: Start difference. First operand 7093 states and 10940 transitions. Second operand 6 states. [2020-10-15 03:57:08,085 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-15 03:57:09,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:57:09,979 INFO L93 Difference]: Finished difference Result 20256 states and 31252 transitions. [2020-10-15 03:57:09,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:57:09,980 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-15 03:57:09,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:57:10,045 INFO L225 Difference]: With dead ends: 20256 [2020-10-15 03:57:10,046 INFO L226 Difference]: Without dead ends: 13278 [2020-10-15 03:57:10,059 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 03:57:10,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13278 states. [2020-10-15 03:57:10,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13278 to 13276. [2020-10-15 03:57:10,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13276 states. [2020-10-15 03:57:10,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13276 states to 13276 states and 20350 transitions. [2020-10-15 03:57:10,932 INFO L78 Accepts]: Start accepts. Automaton has 13276 states and 20350 transitions. Word has length 86 [2020-10-15 03:57:10,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:57:10,932 INFO L479 AbstractCegarLoop]: Abstraction has 13276 states and 20350 transitions. [2020-10-15 03:57:10,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:57:10,932 INFO L276 IsEmpty]: Start isEmpty. Operand 13276 states and 20350 transitions. [2020-10-15 03:57:10,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 03:57:10,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:57:10,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:57:10,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:57:10,940 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:57:10,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:57:10,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1573073481, now seen corresponding path program 1 times [2020-10-15 03:57:10,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:57:10,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731161541] [2020-10-15 03:57:10,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:57:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:10,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:11,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:11,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:11,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 03:57:11,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:57:11,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 580 [2020-10-15 03:57:11,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:11,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:11,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:57:11,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:57:11,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 03:57:11,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:57:11,739 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:57:11,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:57:11,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:11,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:11,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:11,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:57:11,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:57:11,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 03:57:11,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:11,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:11,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:57:11,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:57:11,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:57:11,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:57:11,790 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 03:57:11,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731161541] [2020-10-15 03:57:11,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:57:11,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:57:11,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886717765] [2020-10-15 03:57:11,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:57:11,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:57:11,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:57:11,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:57:11,792 INFO L87 Difference]: Start difference. First operand 13276 states and 20350 transitions. Second operand 6 states. [2020-10-15 03:57:11,986 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:57:14,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:57:14,123 INFO L93 Difference]: Finished difference Result 38565 states and 59175 transitions. [2020-10-15 03:57:14,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:57:14,123 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-15 03:57:14,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:57:14,179 INFO L225 Difference]: With dead ends: 38565 [2020-10-15 03:57:14,180 INFO L226 Difference]: Without dead ends: 25438 [2020-10-15 03:57:14,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:57:14,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25438 states. [2020-10-15 03:57:16,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25438 to 25436. [2020-10-15 03:57:16,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25436 states. [2020-10-15 03:57:16,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25436 states to 25436 states and 38841 transitions. [2020-10-15 03:57:16,209 INFO L78 Accepts]: Start accepts. Automaton has 25436 states and 38841 transitions. Word has length 86 [2020-10-15 03:57:16,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:57:16,210 INFO L479 AbstractCegarLoop]: Abstraction has 25436 states and 38841 transitions. [2020-10-15 03:57:16,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:57:16,210 INFO L276 IsEmpty]: Start isEmpty. Operand 25436 states and 38841 transitions. [2020-10-15 03:57:16,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-15 03:57:16,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:57:16,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:57:16,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:57:16,220 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:57:16,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:57:16,220 INFO L82 PathProgramCache]: Analyzing trace with hash 88371251, now seen corresponding path program 1 times [2020-10-15 03:57:16,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:57:16,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155048144] [2020-10-15 03:57:16,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:57:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:16,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:16,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:16,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:18,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:18,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-15 03:57:18,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:57:18,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2155 [2020-10-15 03:57:18,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:18,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:18,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:57:18,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:57:18,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 03:57:18,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:57:18,807 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:57:18,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:57:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:18,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:18,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:18,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:57:18,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:57:18,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:57:18,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:18,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:18,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:57:18,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:57:18,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:57:18,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:57:18,846 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 03:57:18,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155048144] [2020-10-15 03:57:18,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:57:18,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:57:18,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167930128] [2020-10-15 03:57:18,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:57:18,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:57:18,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:57:18,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:57:18,848 INFO L87 Difference]: Start difference. First operand 25436 states and 38841 transitions. Second operand 9 states. [2020-10-15 03:57:19,047 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:57:28,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:57:28,079 INFO L93 Difference]: Finished difference Result 145930 states and 222205 transitions. [2020-10-15 03:57:28,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 03:57:28,079 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-10-15 03:57:28,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:57:28,384 INFO L225 Difference]: With dead ends: 145930 [2020-10-15 03:57:28,384 INFO L226 Difference]: Without dead ends: 121142 [2020-10-15 03:57:28,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-15 03:57:28,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121142 states. [2020-10-15 03:57:32,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121142 to 25518. [2020-10-15 03:57:32,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25518 states. [2020-10-15 03:57:32,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25518 states to 25518 states and 38930 transitions. [2020-10-15 03:57:32,332 INFO L78 Accepts]: Start accepts. Automaton has 25518 states and 38930 transitions. Word has length 87 [2020-10-15 03:57:32,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:57:32,332 INFO L479 AbstractCegarLoop]: Abstraction has 25518 states and 38930 transitions. [2020-10-15 03:57:32,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:57:32,332 INFO L276 IsEmpty]: Start isEmpty. Operand 25518 states and 38930 transitions. [2020-10-15 03:57:32,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-15 03:57:32,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:57:32,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:57:32,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:57:32,342 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:57:32,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:57:32,343 INFO L82 PathProgramCache]: Analyzing trace with hash 20295635, now seen corresponding path program 1 times [2020-10-15 03:57:32,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:57:32,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489263342] [2020-10-15 03:57:32,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:57:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:32,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:32,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:32,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:33,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:33,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-15 03:57:33,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:57:33,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1614 [2020-10-15 03:57:33,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:33,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:33,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:57:33,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:57:33,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 03:57:33,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:57:34,309 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:57:34,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:57:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:34,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:34,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:34,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:57:34,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:57:34,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:57:34,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:34,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:34,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:57:34,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:57:34,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:57:34,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:57:34,348 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 03:57:34,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489263342] [2020-10-15 03:57:34,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:57:34,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:57:34,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018002473] [2020-10-15 03:57:34,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:57:34,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:57:34,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:57:34,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:57:34,350 INFO L87 Difference]: Start difference. First operand 25518 states and 38930 transitions. Second operand 9 states. [2020-10-15 03:57:34,572 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:57:47,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:57:47,560 INFO L93 Difference]: Finished difference Result 143634 states and 218749 transitions. [2020-10-15 03:57:47,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 03:57:47,561 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-10-15 03:57:47,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:57:47,849 INFO L225 Difference]: With dead ends: 143634 [2020-10-15 03:57:47,849 INFO L226 Difference]: Without dead ends: 123146 [2020-10-15 03:57:47,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-15 03:57:47,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123146 states. [2020-10-15 03:57:52,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123146 to 25813. [2020-10-15 03:57:52,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25813 states. [2020-10-15 03:57:52,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25813 states to 25813 states and 39304 transitions. [2020-10-15 03:57:52,477 INFO L78 Accepts]: Start accepts. Automaton has 25813 states and 39304 transitions. Word has length 87 [2020-10-15 03:57:52,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:57:52,477 INFO L479 AbstractCegarLoop]: Abstraction has 25813 states and 39304 transitions. [2020-10-15 03:57:52,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:57:52,477 INFO L276 IsEmpty]: Start isEmpty. Operand 25813 states and 39304 transitions. [2020-10-15 03:57:52,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-15 03:57:52,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:57:52,486 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:57:52,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:57:52,486 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:57:52,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:57:52,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1569140595, now seen corresponding path program 1 times [2020-10-15 03:57:52,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:57:52,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418199691] [2020-10-15 03:57:52,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:57:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:52,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:52,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:52,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:53,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:53,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-15 03:57:53,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:57:53,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1213 [2020-10-15 03:57:53,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:53,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:53,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:57:53,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:57:53,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-15 03:57:53,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:57:53,966 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2020-10-15 03:57:54,170 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:57:54,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:57:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:54,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:54,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:54,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:57:54,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:57:54,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:57:54,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:54,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:54,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:57:54,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:57:54,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:57:54,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:57:54,215 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 03:57:54,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418199691] [2020-10-15 03:57:54,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:57:54,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:57:54,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215403893] [2020-10-15 03:57:54,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:57:54,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:57:54,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:57:54,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:57:54,218 INFO L87 Difference]: Start difference. First operand 25813 states and 39304 transitions. Second operand 9 states. [2020-10-15 03:57:54,427 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:58:10,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:58:10,631 INFO L93 Difference]: Finished difference Result 140591 states and 214044 transitions. [2020-10-15 03:58:10,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 03:58:10,632 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-10-15 03:58:10,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:58:10,922 INFO L225 Difference]: With dead ends: 140591 [2020-10-15 03:58:10,923 INFO L226 Difference]: Without dead ends: 124800 [2020-10-15 03:58:10,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-15 03:58:11,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124800 states. [2020-10-15 03:58:14,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124800 to 26343. [2020-10-15 03:58:14,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26343 states. [2020-10-15 03:58:14,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26343 states to 26343 states and 39996 transitions. [2020-10-15 03:58:14,667 INFO L78 Accepts]: Start accepts. Automaton has 26343 states and 39996 transitions. Word has length 87 [2020-10-15 03:58:14,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:58:14,668 INFO L479 AbstractCegarLoop]: Abstraction has 26343 states and 39996 transitions. [2020-10-15 03:58:14,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:58:14,668 INFO L276 IsEmpty]: Start isEmpty. Operand 26343 states and 39996 transitions. [2020-10-15 03:58:14,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-15 03:58:14,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:58:14,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:58:14,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:58:14,677 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:58:14,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:58:14,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1703997203, now seen corresponding path program 1 times [2020-10-15 03:58:14,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:58:14,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160278793] [2020-10-15 03:58:14,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:58:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:14,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:14,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:14,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:15,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:15,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-15 03:58:15,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:58:15,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1213 [2020-10-15 03:58:15,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:15,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:15,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:58:15,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:58:15,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-15 03:58:15,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:58:16,250 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:58:16,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:58:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:16,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:16,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:16,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:58:16,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:58:16,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:58:16,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:16,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:16,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:58:16,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:58:16,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:58:16,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:58:16,308 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 03:58:16,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160278793] [2020-10-15 03:58:16,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:58:16,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:58:16,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266672143] [2020-10-15 03:58:16,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:58:16,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:58:16,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:58:16,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:58:16,310 INFO L87 Difference]: Start difference. First operand 26343 states and 39996 transitions. Second operand 9 states. [2020-10-15 03:58:16,511 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:58:34,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:58:34,339 INFO L93 Difference]: Finished difference Result 117954 states and 178813 transitions. [2020-10-15 03:58:34,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 03:58:34,340 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-10-15 03:58:34,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:58:34,517 INFO L225 Difference]: With dead ends: 117954 [2020-10-15 03:58:34,517 INFO L226 Difference]: Without dead ends: 107104 [2020-10-15 03:58:34,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2020-10-15 03:58:34,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107104 states. [2020-10-15 03:58:38,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107104 to 27131. [2020-10-15 03:58:38,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27131 states. [2020-10-15 03:58:38,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27131 states to 27131 states and 41082 transitions. [2020-10-15 03:58:38,822 INFO L78 Accepts]: Start accepts. Automaton has 27131 states and 41082 transitions. Word has length 87 [2020-10-15 03:58:38,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:58:38,822 INFO L479 AbstractCegarLoop]: Abstraction has 27131 states and 41082 transitions. [2020-10-15 03:58:38,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:58:38,822 INFO L276 IsEmpty]: Start isEmpty. Operand 27131 states and 41082 transitions. [2020-10-15 03:58:38,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-15 03:58:38,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:58:38,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:58:38,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:58:38,830 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:58:38,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:58:38,830 INFO L82 PathProgramCache]: Analyzing trace with hash 749399731, now seen corresponding path program 1 times [2020-10-15 03:58:38,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:58:38,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765743451] [2020-10-15 03:58:38,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:58:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:38,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:38,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:38,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:40,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:40,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-15 03:58:40,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:58:40,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1681 [2020-10-15 03:58:40,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:40,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:40,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:58:40,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:58:40,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 03:58:40,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:58:40,816 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:58:40,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:58:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:40,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:40,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:40,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:58:40,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:58:40,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:58:40,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:40,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:40,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:58:40,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:58:40,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:58:40,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:58:40,854 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 03:58:40,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765743451] [2020-10-15 03:58:40,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:58:40,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:58:40,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333791353] [2020-10-15 03:58:40,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:58:40,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:58:40,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:58:40,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:58:40,857 INFO L87 Difference]: Start difference. First operand 27131 states and 41082 transitions. Second operand 9 states. [2020-10-15 03:58:41,077 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:58:59,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:58:59,624 INFO L93 Difference]: Finished difference Result 117358 states and 178175 transitions. [2020-10-15 03:58:59,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 03:58:59,625 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-10-15 03:58:59,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:58:59,750 INFO L225 Difference]: With dead ends: 117358 [2020-10-15 03:58:59,750 INFO L226 Difference]: Without dead ends: 111375 [2020-10-15 03:58:59,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2020-10-15 03:58:59,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111375 states. [2020-10-15 03:59:05,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111375 to 27131. [2020-10-15 03:59:05,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27131 states. [2020-10-15 03:59:05,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27131 states to 27131 states and 41066 transitions. [2020-10-15 03:59:05,741 INFO L78 Accepts]: Start accepts. Automaton has 27131 states and 41066 transitions. Word has length 87 [2020-10-15 03:59:05,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:59:05,742 INFO L479 AbstractCegarLoop]: Abstraction has 27131 states and 41066 transitions. [2020-10-15 03:59:05,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:59:05,742 INFO L276 IsEmpty]: Start isEmpty. Operand 27131 states and 41066 transitions. [2020-10-15 03:59:05,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-15 03:59:05,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:59:05,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:59:05,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:59:05,749 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:59:05,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:59:05,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1283726391, now seen corresponding path program 1 times [2020-10-15 03:59:05,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:59:05,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076474092] [2020-10-15 03:59:05,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:59:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:59:05,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:05,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:59:05,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 03:59:05,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:59:05,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-15 03:59:05,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:59:05,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:59:05,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:59:05,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-15 03:59:05,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 03:59:05,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:59:06,052 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:59:06,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:59:06,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:59:06,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:06,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:59:06,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:59:06,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:59:06,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:59:06,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:59:06,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:59:06,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:59:06,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:59:06,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:59:06,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:59:06,078 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 03:59:06,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076474092] [2020-10-15 03:59:06,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:59:06,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:59:06,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981589272] [2020-10-15 03:59:06,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:59:06,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:59:06,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:59:06,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:59:06,080 INFO L87 Difference]: Start difference. First operand 27131 states and 41066 transitions. Second operand 5 states. [2020-10-15 03:59:14,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:59:14,768 INFO L93 Difference]: Finished difference Result 52253 states and 79179 transitions. [2020-10-15 03:59:14,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:59:14,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-15 03:59:14,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:59:14,831 INFO L225 Difference]: With dead ends: 52253 [2020-10-15 03:59:14,831 INFO L226 Difference]: Without dead ends: 52251 [2020-10-15 03:59:14,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:59:14,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52251 states. [2020-10-15 03:59:19,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52251 to 27771. [2020-10-15 03:59:19,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27771 states. [2020-10-15 03:59:19,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27771 states to 27771 states and 41706 transitions. [2020-10-15 03:59:19,414 INFO L78 Accepts]: Start accepts. Automaton has 27771 states and 41706 transitions. Word has length 88 [2020-10-15 03:59:19,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:59:19,414 INFO L479 AbstractCegarLoop]: Abstraction has 27771 states and 41706 transitions. [2020-10-15 03:59:19,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:59:19,414 INFO L276 IsEmpty]: Start isEmpty. Operand 27771 states and 41706 transitions. [2020-10-15 03:59:19,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-15 03:59:19,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:59:19,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:59:19,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:59:19,422 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:59:19,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:59:19,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1413771914, now seen corresponding path program 1 times [2020-10-15 03:59:19,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:59:19,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168972699] [2020-10-15 03:59:19,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:59:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:59:19,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:19,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:19,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:21,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:59:21,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-15 03:59:21,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:59:21,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1575 [2020-10-15 03:59:21,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:59:21,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:59:21,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:59:21,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:59:21,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 03:59:21,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:59:21,222 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:59:21,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:59:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:59:21,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:21,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:59:21,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:59:21,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:59:21,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:59:21,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:59:21,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:59:21,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:59:21,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:59:21,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:59:21,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:59:21,254 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 03:59:21,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168972699] [2020-10-15 03:59:21,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:59:21,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:59:21,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916468243] [2020-10-15 03:59:21,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:59:21,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:59:21,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:59:21,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:59:21,255 INFO L87 Difference]: Start difference. First operand 27771 states and 41706 transitions. Second operand 8 states. [2020-10-15 03:59:21,455 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-15 03:59:36,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:59:36,428 INFO L93 Difference]: Finished difference Result 95309 states and 144778 transitions. [2020-10-15 03:59:36,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:59:36,429 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-10-15 03:59:36,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:59:36,520 INFO L225 Difference]: With dead ends: 95309 [2020-10-15 03:59:36,520 INFO L226 Difference]: Without dead ends: 82747 [2020-10-15 03:59:36,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:59:36,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82747 states. [2020-10-15 03:59:45,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82747 to 50363. [2020-10-15 03:59:45,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50363 states. [2020-10-15 03:59:45,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50363 states to 50363 states and 75949 transitions. [2020-10-15 03:59:45,253 INFO L78 Accepts]: Start accepts. Automaton has 50363 states and 75949 transitions. Word has length 89 [2020-10-15 03:59:45,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:59:45,253 INFO L479 AbstractCegarLoop]: Abstraction has 50363 states and 75949 transitions. [2020-10-15 03:59:45,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:59:45,253 INFO L276 IsEmpty]: Start isEmpty. Operand 50363 states and 75949 transitions. [2020-10-15 03:59:45,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-15 03:59:45,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:59:45,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:59:45,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:59:45,264 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:59:45,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:59:45,264 INFO L82 PathProgramCache]: Analyzing trace with hash -862358602, now seen corresponding path program 1 times [2020-10-15 03:59:45,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:59:45,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082571534] [2020-10-15 03:59:45,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:59:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:59:45,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:45,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:59:45,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-15 03:59:45,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:59:45,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-15 03:59:45,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:59:45,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:59:45,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:59:45,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:59:45,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-15 03:59:45,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:59:45,591 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:59:45,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:59:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:59:45,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:45,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:59:45,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:59:45,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:59:45,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:59:45,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:59:45,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:59:45,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:59:45,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:59:45,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:59:45,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:59:45,617 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 03:59:45,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082571534] [2020-10-15 03:59:45,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:59:45,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:59:45,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637062135] [2020-10-15 03:59:45,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:59:45,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:59:45,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:59:45,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:59:45,618 INFO L87 Difference]: Start difference. First operand 50363 states and 75949 transitions. Second operand 5 states. [2020-10-15 03:59:45,811 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 04:00:02,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:00:02,958 INFO L93 Difference]: Finished difference Result 136959 states and 206479 transitions. [2020-10-15 04:00:02,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:00:02,960 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-15 04:00:02,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:00:03,070 INFO L225 Difference]: With dead ends: 136959 [2020-10-15 04:00:03,070 INFO L226 Difference]: Without dead ends: 89517 [2020-10-15 04:00:03,112 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 04:00:03,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89517 states. [2020-10-15 04:00:20,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89517 to 88971. [2020-10-15 04:00:20,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88971 states. [2020-10-15 04:00:20,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88971 states to 88971 states and 132989 transitions. [2020-10-15 04:00:20,308 INFO L78 Accepts]: Start accepts. Automaton has 88971 states and 132989 transitions. Word has length 89 [2020-10-15 04:00:20,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:00:20,308 INFO L479 AbstractCegarLoop]: Abstraction has 88971 states and 132989 transitions. [2020-10-15 04:00:20,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:00:20,308 INFO L276 IsEmpty]: Start isEmpty. Operand 88971 states and 132989 transitions. [2020-10-15 04:00:20,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-15 04:00:20,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:00:20,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:00:20,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 04:00:20,317 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:00:20,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:00:20,318 INFO L82 PathProgramCache]: Analyzing trace with hash -885359912, now seen corresponding path program 1 times [2020-10-15 04:00:20,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:00:20,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948101739] [2020-10-15 04:00:20,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:00:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:00:20,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:00:20,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:00:20,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:00:21,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:00:21,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-15 04:00:21,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:00:21,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1450 [2020-10-15 04:00:21,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:00:21,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:00:21,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 04:00:21,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:00:21,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 04:00:21,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:00:21,981 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 04:00:21,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:00:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:00:21,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:00:21,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:00:21,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:00:21,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:00:21,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:00:21,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:00:21,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:00:21,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:00:21,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:00:21,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:00:21,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:00:22,016 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 04:00:22,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948101739] [2020-10-15 04:00:22,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:00:22,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 04:00:22,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973811561] [2020-10-15 04:00:22,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 04:00:22,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:00:22,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 04:00:22,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:00:22,025 INFO L87 Difference]: Start difference. First operand 88971 states and 132989 transitions. Second operand 8 states. [2020-10-15 04:00:22,236 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 156