/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/pals_opt-floodmax.5_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 02:48:38,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 02:48:38,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 02:48:38,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 02:48:38,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 02:48:38,993 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 02:48:38,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 02:48:38,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 02:48:39,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 02:48:39,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 02:48:39,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 02:48:39,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 02:48:39,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 02:48:39,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 02:48:39,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 02:48:39,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 02:48:39,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 02:48:39,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 02:48:39,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 02:48:39,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 02:48:39,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 02:48:39,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 02:48:39,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 02:48:39,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 02:48:39,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 02:48:39,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 02:48:39,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 02:48:39,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 02:48:39,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 02:48:39,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 02:48:39,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 02:48:39,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 02:48:39,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 02:48:39,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 02:48:39,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 02:48:39,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 02:48:39,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 02:48:39,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 02:48:39,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 02:48:39,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 02:48:39,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 02:48:39,059 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 02:48:39,093 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 02:48:39,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 02:48:39,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 02:48:39,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 02:48:39,095 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 02:48:39,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 02:48:39,096 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 02:48:39,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 02:48:39,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 02:48:39,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 02:48:39,098 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 02:48:39,098 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 02:48:39,098 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 02:48:39,099 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 02:48:39,099 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 02:48:39,099 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 02:48:39,099 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 02:48:39,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 02:48:39,100 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 02:48:39,100 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 02:48:39,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 02:48:39,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:48:39,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 02:48:39,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 02:48:39,101 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 02:48:39,101 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 02:48:39,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 02:48:39,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 02:48:39,102 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 02:48:39,102 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 02:48:39,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 02:48:39,430 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 02:48:39,433 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 02:48:39,434 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 02:48:39,435 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 02:48:39,435 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5_overflow.ufo.UNBOUNDED.pals.c [2020-10-15 02:48:39,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de160a712/0993075bc95d4e94a8030e5138c92d7a/FLAG3cecb31c1 [2020-10-15 02:48:40,095 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 02:48:40,096 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5_overflow.ufo.UNBOUNDED.pals.c [2020-10-15 02:48:40,128 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de160a712/0993075bc95d4e94a8030e5138c92d7a/FLAG3cecb31c1 [2020-10-15 02:48:40,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de160a712/0993075bc95d4e94a8030e5138c92d7a [2020-10-15 02:48:40,362 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 02:48:40,365 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 02:48:40,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 02:48:40,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 02:48:40,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 02:48:40,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:48:40" (1/1) ... [2020-10-15 02:48:40,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38d644e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:48:40, skipping insertion in model container [2020-10-15 02:48:40,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:48:40" (1/1) ... [2020-10-15 02:48:40,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 02:48:40,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 02:48:41,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:48:41,079 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 02:48:41,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:48:41,289 INFO L208 MainTranslator]: Completed translation [2020-10-15 02:48:41,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:48:41 WrapperNode [2020-10-15 02:48:41,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 02:48:41,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 02:48:41,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 02:48:41,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 02:48:41,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:48:41" (1/1) ... [2020-10-15 02:48:41,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:48:41" (1/1) ... [2020-10-15 02:48:41,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:48:41" (1/1) ... [2020-10-15 02:48:41,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:48:41" (1/1) ... [2020-10-15 02:48:41,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:48:41" (1/1) ... [2020-10-15 02:48:41,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:48:41" (1/1) ... [2020-10-15 02:48:41,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:48:41" (1/1) ... [2020-10-15 02:48:41,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 02:48:41,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 02:48:41,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 02:48:41,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 02:48:41,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:48:41" (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 02:48:41,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 02:48:41,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 02:48:41,558 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 02:48:41,558 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-15 02:48:41,558 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-15 02:48:41,558 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-15 02:48:41,558 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-15 02:48:41,558 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-15 02:48:41,559 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-15 02:48:41,559 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-15 02:48:41,559 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 02:48:41,559 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-15 02:48:41,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 02:48:41,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 02:48:41,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 02:48:41,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 02:48:41,560 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 02:48:41,560 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 02:48:41,561 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 02:48:41,561 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 02:48:41,561 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 02:48:41,561 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 02:48:41,562 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 02:48:41,562 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 02:48:41,562 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 02:48:41,562 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 02:48:41,562 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 02:48:41,562 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 02:48:41,563 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 02:48:41,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 02:48:41,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 02:48:44,016 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 02:48:44,017 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-15 02:48:44,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:48:44 BoogieIcfgContainer [2020-10-15 02:48:44,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 02:48:44,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 02:48:44,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 02:48:44,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 02:48:44,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:48:40" (1/3) ... [2020-10-15 02:48:44,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2378dc80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:48:44, skipping insertion in model container [2020-10-15 02:48:44,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:48:41" (2/3) ... [2020-10-15 02:48:44,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2378dc80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:48:44, skipping insertion in model container [2020-10-15 02:48:44,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:48:44" (3/3) ... [2020-10-15 02:48:44,035 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5_overflow.ufo.UNBOUNDED.pals.c [2020-10-15 02:48:44,047 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 02:48:44,057 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 02:48:44,072 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 02:48:44,102 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 02:48:44,102 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 02:48:44,102 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 02:48:44,102 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 02:48:44,103 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 02:48:44,103 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 02:48:44,103 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 02:48:44,103 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 02:48:44,138 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states. [2020-10-15 02:48:44,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-15 02:48:44,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:48:44,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:48:44,164 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:48:44,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:48:44,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1128167628, now seen corresponding path program 1 times [2020-10-15 02:48:44,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:48:44,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32289833] [2020-10-15 02:48:44,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:48:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:45,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:45,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:45,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-15 02:48:45,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:45,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 901 [2020-10-15 02:48:45,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:45,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:45,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:45,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-15 02:48:45,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:45,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 02:48:47,103 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 370 [2020-10-15 02:48:47,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:48:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:47,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:47,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:47,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:48:47,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:47,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-15 02:48:47,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:47,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:47,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:47,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:48:47,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:47,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:47,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 02:48:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:47,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:47,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:47,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-15 02:48:47,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:47,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-15 02:48:47,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:47,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:47,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:47,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:48:47,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:47,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:47,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-15 02:48:47,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:47,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:47,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:47,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:48:47,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:47,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:48:47,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:47,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:47,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:47,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-15 02:48:47,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:47,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 02:48:47,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-15 02:48:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:47,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:47,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:47,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:48:47,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:47,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:48:47,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:47,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:47,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:47,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:48:47,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:47,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 02:48:47,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-15 02:48:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:47,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:47,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:47,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:48:47,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:47,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:48:47,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:47,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:47,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:47,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:48:47,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:47,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:47,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-15 02:48:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:47,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:47,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:47,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:48:47,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:47,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:48:47,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:47,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:47,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:47,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:48:47,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:47,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:47,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-15 02:48:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:47,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:47,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:47,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:48:47,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:47,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:48:47,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:47,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:47,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:47,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:48:47,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:47,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:47,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-15 02:48:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:47,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:47,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:47,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:48:47,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:47,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 02:48:47,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:47,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:47,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:47,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:48:47,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:47,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:47,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-15 02:48:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:47,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:47,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:47,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:48:47,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:47,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:48:47,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:47,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:47,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:47,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-15 02:48:47,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:47,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:48,029 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 02:48:48,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32289833] [2020-10-15 02:48:48,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:48:48,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 02:48:48,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114952582] [2020-10-15 02:48:48,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 02:48:48,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:48:48,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 02:48:48,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-15 02:48:48,056 INFO L87 Difference]: Start difference. First operand 772 states. Second operand 8 states. [2020-10-15 02:48:50,856 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:48:51,546 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:48:52,170 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:48:52,819 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:48:53,491 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:48:54,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:48:54,552 INFO L93 Difference]: Finished difference Result 1044 states and 1849 transitions. [2020-10-15 02:48:54,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 02:48:54,554 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 187 [2020-10-15 02:48:54,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:48:54,580 INFO L225 Difference]: With dead ends: 1044 [2020-10-15 02:48:54,580 INFO L226 Difference]: Without dead ends: 832 [2020-10-15 02:48:54,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-15 02:48:54,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2020-10-15 02:48:54,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 767. [2020-10-15 02:48:54,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 767 states. [2020-10-15 02:48:54,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1386 transitions. [2020-10-15 02:48:54,793 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1386 transitions. Word has length 187 [2020-10-15 02:48:54,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:48:54,794 INFO L479 AbstractCegarLoop]: Abstraction has 767 states and 1386 transitions. [2020-10-15 02:48:54,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 02:48:54,794 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1386 transitions. [2020-10-15 02:48:54,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-15 02:48:54,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:48:54,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:48:54,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 02:48:54,800 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:48:54,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:48:54,800 INFO L82 PathProgramCache]: Analyzing trace with hash 410172402, now seen corresponding path program 1 times [2020-10-15 02:48:54,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:48:54,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638921084] [2020-10-15 02:48:54,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:48:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:54,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:57,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:57,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-15 02:48:57,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:57,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2363 [2020-10-15 02:48:57,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:57,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:57,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:48:57,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-15 02:48:57,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 02:48:57,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:58,185 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-15 02:48:58,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:48:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:58,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:58,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:58,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:48:58,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:58,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 02:48:58,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:58,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:58,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:58,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:48:58,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:58,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:58,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 02:48:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:58,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:58,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:58,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-15 02:48:58,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:58,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 682 [2020-10-15 02:48:58,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:58,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:58,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:48:58,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:48:58,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-15 02:48:58,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:59,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-15 02:48:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:59,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:59,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:59,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:48:59,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:59,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 02:48:59,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:59,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:59,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:48:59,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:48:59,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:48:59,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:59,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-15 02:48:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:59,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:59,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:59,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:48:59,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:59,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:48:59,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:59,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:59,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:59,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:48:59,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:59,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:59,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-15 02:48:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:59,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:59,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:59,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:48:59,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:59,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 02:48:59,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:59,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:59,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:59,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:48:59,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:59,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:48:59,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-15 02:48:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:59,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:59,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:59,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:48:59,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:59,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:48:59,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:59,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:59,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:59,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:48:59,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:59,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:59,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-15 02:48:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:59,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:59,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:59,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:48:59,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:59,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:48:59,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:59,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:59,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:59,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:48:59,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:59,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:59,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-15 02:48:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:59,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:59,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:59,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:48:59,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:59,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:48:59,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:59,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:48:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:59,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:59,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-15 02:48:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:59,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:59,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:59,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:48:59,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:59,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:48:59,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:59,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:59,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:59,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-15 02:48:59,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:59,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:59,528 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 02:48:59,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638921084] [2020-10-15 02:48:59,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:48:59,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-15 02:48:59,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209232213] [2020-10-15 02:48:59,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 02:48:59,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:48:59,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 02:48:59,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-15 02:48:59,533 INFO L87 Difference]: Start difference. First operand 767 states and 1386 transitions. Second operand 14 states. [2020-10-15 02:49:07,884 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-15 02:49:08,652 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 375 [2020-10-15 02:49:09,469 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-15 02:49:10,144 WARN L193 SmtUtils]: Spent 628.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2020-10-15 02:49:11,263 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:49:11,969 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:49:12,722 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:49:13,455 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:49:14,140 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:49:15,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:49:15,008 INFO L93 Difference]: Finished difference Result 1042 states and 1841 transitions. [2020-10-15 02:49:15,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 02:49:15,009 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 187 [2020-10-15 02:49:15,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:49:15,015 INFO L225 Difference]: With dead ends: 1042 [2020-10-15 02:49:15,015 INFO L226 Difference]: Without dead ends: 832 [2020-10-15 02:49:15,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-15 02:49:15,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2020-10-15 02:49:15,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 767. [2020-10-15 02:49:15,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 767 states. [2020-10-15 02:49:15,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1321 transitions. [2020-10-15 02:49:15,137 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1321 transitions. Word has length 187 [2020-10-15 02:49:15,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:49:15,138 INFO L479 AbstractCegarLoop]: Abstraction has 767 states and 1321 transitions. [2020-10-15 02:49:15,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 02:49:15,138 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1321 transitions. [2020-10-15 02:49:15,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-15 02:49:15,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:49:15,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:49:15,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 02:49:15,152 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:49:15,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:49:15,152 INFO L82 PathProgramCache]: Analyzing trace with hash 534018384, now seen corresponding path program 1 times [2020-10-15 02:49:15,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:49:15,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604979467] [2020-10-15 02:49:15,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:49:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:15,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:15,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:16,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:17,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:20,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:20,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-15 02:49:20,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:49:20,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-15 02:49:20,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:20,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:20,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:49:20,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-15 02:49:20,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-15 02:49:20,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:49:21,235 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-15 02:49:21,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:49:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:21,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:21,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:21,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:49:21,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:21,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-15 02:49:21,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:21,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:21,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:49:21,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:49:21,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:49:21,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:49:21,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 02:49:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:21,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:21,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:21,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-15 02:49:21,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:21,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-10-15 02:49:21,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:21,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:21,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:49:21,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:49:21,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-15 02:49:21,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:49:21,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-15 02:49:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:21,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:21,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:21,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:49:21,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:21,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 02:49:21,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:21,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:21,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:49:21,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:49:21,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:49:21,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:49:21,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-15 02:49:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:21,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:21,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:22,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:49:22,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:22,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 02:49:22,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:22,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:22,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:49:22,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:49:22,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:49:22,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:49:22,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-15 02:49:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:22,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:22,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:22,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:49:22,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:22,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 02:49:22,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:22,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:22,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:49:22,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:49:22,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:49:22,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:49:22,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-15 02:49:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:22,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:22,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:22,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:49:22,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:22,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-15 02:49:22,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:22,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:22,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:49:22,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 02:49:22,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 02:49:22,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:49:22,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-15 02:49:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:22,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:22,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:22,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:49:22,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:22,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:49:22,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:22,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:22,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:49:22,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:49:22,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:49:22,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:49:22,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-15 02:49:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:22,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:22,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:22,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:49:22,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:22,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 02:49:22,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:22,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:22,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:49:22,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:49:22,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:49:22,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:49:22,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-15 02:49:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:22,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:22,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:22,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:49:22,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:22,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:49:22,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:22,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:22,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:49:22,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-15 02:49:22,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:49:22,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:49:22,509 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 02:49:22,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604979467] [2020-10-15 02:49:22,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:49:22,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 02:49:22,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677261008] [2020-10-15 02:49:22,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:49:22,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:49:22,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:49:22,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:49:22,513 INFO L87 Difference]: Start difference. First operand 767 states and 1321 transitions. Second operand 11 states. [2020-10-15 02:49:23,226 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification that was a NOOP. DAG size: 374 [2020-10-15 02:49:30,157 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-15 02:49:30,866 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-15 02:49:31,526 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:49:32,066 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:49:32,534 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-15 02:49:32,741 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:49:33,482 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-15 02:49:33,753 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:49:35,266 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:49:35,725 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:49:36,646 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification that was a NOOP. DAG size: 380 [2020-10-15 02:49:36,897 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-15 02:49:37,218 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-15 02:49:37,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:49:37,265 INFO L93 Difference]: Finished difference Result 1298 states and 2202 transitions. [2020-10-15 02:49:37,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 02:49:37,265 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 251 [2020-10-15 02:49:37,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:49:37,276 INFO L225 Difference]: With dead ends: 1298 [2020-10-15 02:49:37,276 INFO L226 Difference]: Without dead ends: 1094 [2020-10-15 02:49:37,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-15 02:49:37,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2020-10-15 02:49:37,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 959. [2020-10-15 02:49:37,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2020-10-15 02:49:37,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1638 transitions. [2020-10-15 02:49:37,432 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1638 transitions. Word has length 251 [2020-10-15 02:49:37,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:49:37,433 INFO L479 AbstractCegarLoop]: Abstraction has 959 states and 1638 transitions. [2020-10-15 02:49:37,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:49:37,433 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1638 transitions. [2020-10-15 02:49:37,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-15 02:49:37,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:49:37,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:49:37,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 02:49:37,440 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:49:37,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:49:37,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1181876280, now seen corresponding path program 1 times [2020-10-15 02:49:37,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:49:37,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650265804] [2020-10-15 02:49:37,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:49:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:37,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:38,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:38,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:40,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:40,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:41,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:41,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:42,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:42,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-15 02:49:42,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:49:42,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5093 [2020-10-15 02:49:42,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:42,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:42,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:49:42,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 02:49:42,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-15 02:49:42,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:49:43,884 WARN L193 SmtUtils]: Spent 912.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-15 02:49:43,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:49:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:43,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:43,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:43,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:49:43,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:43,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 02:49:43,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:43,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:43,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:49:43,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:49:43,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:49:43,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:49:43,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 02:49:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:44,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:44,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:44,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-15 02:49:44,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:44,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-15 02:49:44,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:44,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:44,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:49:44,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:49:44,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 02:49:44,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:49:44,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-15 02:49:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:44,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:44,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:44,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:49:44,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:44,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:49:44,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:44,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:44,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:49:44,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:49:44,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:49:44,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:49:44,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-15 02:49:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:44,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:44,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:44,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:49:44,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:44,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 02:49:44,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:44,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:44,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:49:44,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:49:44,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:49:44,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:49:44,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-15 02:49:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:44,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:44,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:44,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:49:44,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:44,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 02:49:44,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:44,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:44,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:49:44,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:49:44,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:49:44,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:49:44,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-15 02:49:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:44,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:44,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:44,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 02:49:44,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:44,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 02:49:44,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:44,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:44,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:49:44,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 02:49:44,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:49:44,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:49:44,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-15 02:49:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:44,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:44,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:44,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:49:44,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:44,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:49:44,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:44,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:44,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:49:44,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:49:44,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:49:44,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:49:45,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-15 02:49:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:45,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:45,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:45,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:49:45,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:45,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:49:45,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:45,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:45,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:49:45,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:49:45,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:49:45,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:49:45,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-15 02:49:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:45,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:45,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:45,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:49:45,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:45,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:49:45,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:45,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:45,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:49:45,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-15 02:49:45,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:49:45,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:49:45,576 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 02:49:45,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650265804] [2020-10-15 02:49:45,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:49:45,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 02:49:45,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88764234] [2020-10-15 02:49:45,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:49:45,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:49:45,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:49:45,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:49:45,580 INFO L87 Difference]: Start difference. First operand 959 states and 1638 transitions. Second operand 11 states. [2020-10-15 02:49:46,552 WARN L193 SmtUtils]: Spent 847.00 ms on a formula simplification that was a NOOP. DAG size: 374 [2020-10-15 02:49:47,237 WARN L193 SmtUtils]: Spent 643.00 ms on a formula simplification that was a NOOP. DAG size: 381 [2020-10-15 02:49:48,357 WARN L193 SmtUtils]: Spent 673.00 ms on a formula simplification that was a NOOP. DAG size: 384 [2020-10-15 02:49:49,778 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 383 DAG size of output: 381 [2020-10-15 02:50:06,080 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2020-10-15 02:50:06,523 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:50:06,883 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:50:07,288 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:50:07,921 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:50:08,533 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:50:09,533 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:50:09,798 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:50:10,448 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:50:11,480 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:50:12,508 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:50:12,814 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:50:13,113 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:50:14,124 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:50:14,582 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:50:14,927 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:50:16,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:50:16,956 INFO L93 Difference]: Finished difference Result 3836 states and 6556 transitions. [2020-10-15 02:50:16,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 02:50:16,957 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 255 [2020-10-15 02:50:16,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:50:16,973 INFO L225 Difference]: With dead ends: 3836 [2020-10-15 02:50:16,973 INFO L226 Difference]: Without dead ends: 2956 [2020-10-15 02:50:16,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-15 02:50:16,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-10-15 02:50:17,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 2622. [2020-10-15 02:50:17,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2622 states. [2020-10-15 02:50:17,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2622 states to 2622 states and 4464 transitions. [2020-10-15 02:50:17,363 INFO L78 Accepts]: Start accepts. Automaton has 2622 states and 4464 transitions. Word has length 255 [2020-10-15 02:50:17,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:50:17,364 INFO L479 AbstractCegarLoop]: Abstraction has 2622 states and 4464 transitions. [2020-10-15 02:50:17,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:50:17,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2622 states and 4464 transitions. [2020-10-15 02:50:17,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-15 02:50:17,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:50:17,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:50:17,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 02:50:17,374 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:50:17,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:50:17,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1922842695, now seen corresponding path program 1 times [2020-10-15 02:50:17,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:50:17,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454613129] [2020-10-15 02:50:17,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:50:17,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:17,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:18,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:18,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:19,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:20,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:20,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:21,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:21,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:22,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:22,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-15 02:50:22,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 02:50:22,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5118 [2020-10-15 02:50:22,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:22,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:22,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:50:22,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 02:50:22,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-15 02:50:22,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:50:23,510 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-15 02:50:23,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:50:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:23,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:23,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:23,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:50:23,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:23,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 02:50:23,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:23,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:23,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:50:23,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:50:23,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:50:23,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:50:23,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 02:50:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:23,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:23,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:23,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-15 02:50:23,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:23,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-10-15 02:50:23,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:23,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:23,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:50:23,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:50:23,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 02:50:23,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:50:24,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-15 02:50:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:24,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:24,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:24,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:50:24,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:24,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:50:24,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:24,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:24,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:50:24,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:50:24,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:50:24,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:50:24,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-15 02:50:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:24,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:24,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:24,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:50:24,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:24,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:50:24,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:24,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:24,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:50:24,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:50:24,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:50:24,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:50:24,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-15 02:50:24,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:24,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:24,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:24,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:50:24,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:24,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:50:24,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:24,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:24,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:50:24,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:50:24,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:50:24,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:50:24,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-15 02:50:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:24,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:24,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:24,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 02:50:24,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:24,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 02:50:24,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:24,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:24,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:50:24,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 02:50:24,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 02:50:24,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:50:24,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-15 02:50:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:24,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:24,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:24,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:50:24,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:24,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 02:50:24,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:24,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:24,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:50:24,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:50:24,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:50:24,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:50:24,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-15 02:50:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:24,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:24,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:24,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:50:24,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:24,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 02:50:24,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:24,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:24,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:50:24,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:50:24,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:50:24,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:50:24,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-15 02:50:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:24,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:24,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:24,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:50:24,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:24,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:50:24,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:24,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:24,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:50:24,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-15 02:50:24,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:50:24,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:50:24,645 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 02:50:24,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454613129] [2020-10-15 02:50:24,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:50:24,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 02:50:24,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887237322] [2020-10-15 02:50:24,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:50:24,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:50:24,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:50:24,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:50:24,651 INFO L87 Difference]: Start difference. First operand 2622 states and 4464 transitions. Second operand 11 states. [2020-10-15 02:50:25,343 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 374 [2020-10-15 02:50:26,042 WARN L193 SmtUtils]: Spent 656.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-15 02:50:26,840 WARN L193 SmtUtils]: Spent 649.00 ms on a formula simplification that was a NOOP. DAG size: 378 [2020-10-15 02:50:27,518 WARN L193 SmtUtils]: Spent 654.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2020-10-15 02:50:39,755 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2020-10-15 02:50:40,144 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:50:40,473 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:50:41,281 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:50:41,927 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:50:42,798 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:50:43,400 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:50:44,742 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:50:45,086 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:50:45,813 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:50:46,353 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:50:47,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:50:47,876 INFO L93 Difference]: Finished difference Result 8327 states and 14180 transitions. [2020-10-15 02:50:47,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 02:50:47,877 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 256 [2020-10-15 02:50:47,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:50:47,904 INFO L225 Difference]: With dead ends: 8327 [2020-10-15 02:50:47,904 INFO L226 Difference]: Without dead ends: 5747 [2020-10-15 02:50:47,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2020-10-15 02:50:47,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5747 states. [2020-10-15 02:50:48,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5747 to 5103. [2020-10-15 02:50:48,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5103 states. [2020-10-15 02:50:48,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5103 states to 5103 states and 8597 transitions. [2020-10-15 02:50:48,635 INFO L78 Accepts]: Start accepts. Automaton has 5103 states and 8597 transitions. Word has length 256 [2020-10-15 02:50:48,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:50:48,636 INFO L479 AbstractCegarLoop]: Abstraction has 5103 states and 8597 transitions. [2020-10-15 02:50:48,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:50:48,636 INFO L276 IsEmpty]: Start isEmpty. Operand 5103 states and 8597 transitions. [2020-10-15 02:50:48,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-15 02:50:48,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:50:48,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:50:48,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 02:50:48,651 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:50:48,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:50:48,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1574780077, now seen corresponding path program 1 times [2020-10-15 02:50:48,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:50:48,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732755742] [2020-10-15 02:50:48,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:50:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:48,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:49,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:49,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:50,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:51,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:51,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:51,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:53,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:53,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-15 02:50:53,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:50:53,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 02:50:53,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:53,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:53,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:50:53,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 02:50:53,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-15 02:50:53,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:50:54,885 WARN L193 SmtUtils]: Spent 859.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-15 02:50:54,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:50:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:54,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:54,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:54,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:50:54,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:54,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 02:50:54,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:54,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:54,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:50:54,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:50:54,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:50:54,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:50:54,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 02:50:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:54,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:55,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:55,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-15 02:50:55,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:55,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-15 02:50:55,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:55,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:55,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:50:55,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:50:55,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 02:50:55,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:50:55,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-15 02:50:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:55,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:55,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:55,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:50:55,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:55,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:50:55,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:55,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:55,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:50:55,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:50:55,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:50:55,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:50:55,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-15 02:50:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:55,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:55,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:55,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:50:55,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:55,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 02:50:55,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:55,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:55,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:50:55,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:50:55,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:50:55,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:50:55,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-15 02:50:55,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:55,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:55,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:55,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:50:55,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:55,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 02:50:55,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:55,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:55,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:50:55,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:50:55,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:50:55,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:50:55,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-15 02:50:55,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:55,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:55,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:55,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 02:50:55,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:55,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 02:50:55,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:55,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:55,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:50:55,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-15 02:50:55,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:50:55,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:50:55,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-15 02:50:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:55,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:55,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:55,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:50:55,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:55,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 02:50:55,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:55,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:55,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:50:55,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:50:55,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:50:55,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:50:55,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-15 02:50:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:55,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:55,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:55,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:50:55,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:55,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 02:50:55,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:55,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:55,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:50:55,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:50:55,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:50:55,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:50:55,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-15 02:50:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:55,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:55,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:55,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:50:55,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:55,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:50:55,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:55,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:55,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:50:55,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-15 02:50:55,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:50:55,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:50:56,308 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 02:50:56,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732755742] [2020-10-15 02:50:56,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:50:56,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 02:50:56,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90991435] [2020-10-15 02:50:56,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:50:56,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:50:56,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:50:56,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:50:56,312 INFO L87 Difference]: Start difference. First operand 5103 states and 8597 transitions. Second operand 11 states. [2020-10-15 02:50:57,103 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 374 [2020-10-15 02:50:57,864 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 380 [2020-10-15 02:50:58,672 WARN L193 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 384 [2020-10-15 02:51:00,113 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 382 DAG size of output: 378 [2020-10-15 02:51:20,508 WARN L193 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2020-10-15 02:51:20,980 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:51:21,343 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:51:22,094 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:51:22,436 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:51:23,073 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:51:23,631 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:51:24,459 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:51:25,251 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:51:26,072 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:51:27,330 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:51:27,732 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:51:28,054 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:51:29,039 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:51:29,536 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:51:29,902 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:51:31,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:51:31,740 INFO L93 Difference]: Finished difference Result 21254 states and 35881 transitions. [2020-10-15 02:51:31,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 02:51:31,741 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 256 [2020-10-15 02:51:31,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:51:31,813 INFO L225 Difference]: With dead ends: 21254 [2020-10-15 02:51:31,813 INFO L226 Difference]: Without dead ends: 16337 [2020-10-15 02:51:31,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-15 02:51:31,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16337 states. [2020-10-15 02:51:33,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16337 to 14623. [2020-10-15 02:51:33,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14623 states. [2020-10-15 02:51:33,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14623 states to 14623 states and 24534 transitions. [2020-10-15 02:51:33,839 INFO L78 Accepts]: Start accepts. Automaton has 14623 states and 24534 transitions. Word has length 256 [2020-10-15 02:51:33,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:51:33,840 INFO L479 AbstractCegarLoop]: Abstraction has 14623 states and 24534 transitions. [2020-10-15 02:51:33,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:51:33,840 INFO L276 IsEmpty]: Start isEmpty. Operand 14623 states and 24534 transitions. [2020-10-15 02:51:33,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-15 02:51:33,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:51:33,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:51:33,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 02:51:33,876 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:51:33,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:51:33,876 INFO L82 PathProgramCache]: Analyzing trace with hash 832699079, now seen corresponding path program 1 times [2020-10-15 02:51:33,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:51:33,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965563832] [2020-10-15 02:51:33,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:51:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:51:34,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:34,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:35,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:35,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:36,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:36,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:37,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:37,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:39,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:51:39,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-15 02:51:39,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 02:51:39,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-15 02:51:39,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:51:39,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:51:39,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:51:39,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 02:51:39,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 227 [2020-10-15 02:51:39,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:51:39,878 WARN L193 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-15 02:51:39,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:51:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:51:39,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:39,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:51:39,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:51:39,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:51:39,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 02:51:39,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:51:39,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:51:39,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:51:39,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:51:39,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:51:39,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:51:39,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 02:51:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:51:39,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:40,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:51:40,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-15 02:51:40,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:51:40,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-15 02:51:40,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:51:40,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:51:40,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:51:40,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:51:40,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 02:51:40,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:51:40,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-15 02:51:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:51:40,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:40,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:51:40,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:51:40,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:51:40,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:51:40,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:51:40,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:51:40,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:51:40,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:51:40,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:51:40,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-15 02:51:40,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-15 02:51:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:51:40,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:40,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:51:40,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:51:40,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:51:40,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:51:40,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:51:40,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:51:40,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:51:40,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:51:40,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:51:40,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:51:40,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-15 02:51:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:51:40,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:40,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:51:40,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:51:40,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:51:40,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 02:51:40,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:51:40,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:51:40,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:51:40,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:51:40,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:51:40,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:51:40,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-15 02:51:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:51:40,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:40,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:51:40,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-15 02:51:40,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:51:40,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 02:51:40,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:51:40,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:51:40,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:51:40,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:51:40,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:51:40,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:51:40,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-10-15 02:51:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:51:40,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:40,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:51:40,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:51:40,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:51:40,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:51:40,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:51:40,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:51:40,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:51:40,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:51:40,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:51:40,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:51:40,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-15 02:51:40,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:51:40,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:40,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:51:40,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:51:40,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:51:40,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:51:40,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:51:40,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:51:40,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:51:40,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:51:40,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:51:40,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:51:40,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-15 02:51:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:51:40,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:40,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:51:40,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:51:40,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:51:40,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:51:40,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:51:40,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:51:40,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:51:40,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-15 02:51:40,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:51:40,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:51:40,892 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 02:51:40,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965563832] [2020-10-15 02:51:40,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:51:40,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 02:51:40,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905878063] [2020-10-15 02:51:40,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:51:40,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:51:40,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:51:40,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:51:40,895 INFO L87 Difference]: Start difference. First operand 14623 states and 24534 transitions. Second operand 11 states. [2020-10-15 02:51:41,674 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 374 [2020-10-15 02:51:42,459 WARN L193 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 381 [2020-10-15 02:51:43,538 WARN L193 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 384 [2020-10-15 02:51:45,044 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 383 DAG size of output: 381 [2020-10-15 02:52:08,719 WARN L193 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2020-10-15 02:52:09,269 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:52:09,681 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:52:10,346 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:52:10,919 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:52:11,626 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:52:12,640 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:52:13,215 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:52:13,934 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:52:14,867 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:52:16,444 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:52:16,999 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:52:17,251 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:52:18,508 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:52:19,249 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:52:19,570 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:52:22,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:52:22,101 INFO L93 Difference]: Finished difference Result 57851 states and 97217 transitions. [2020-10-15 02:52:22,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 02:52:22,102 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 257 [2020-10-15 02:52:22,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:52:22,240 INFO L225 Difference]: With dead ends: 57851 [2020-10-15 02:52:22,241 INFO L226 Difference]: Without dead ends: 44141 [2020-10-15 02:52:22,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-15 02:52:22,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44141 states.