/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/systemc/mem_slave_tlm.1.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:45:22,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:45:22,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:45:22,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:45:22,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:45:22,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:45:22,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:45:22,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:45:22,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:45:22,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:45:22,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:45:22,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:45:22,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:45:22,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:45:22,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:45:22,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:45:22,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:45:22,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:45:22,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:45:22,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:45:22,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:45:22,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:45:22,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:45:22,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:45:22,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:45:22,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:45:22,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:45:22,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:45:22,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:45:22,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:45:22,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:45:22,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:45:22,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:45:22,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:45:22,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:45:22,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:45:22,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:45:22,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:45:22,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:45:22,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:45:22,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:45:22,069 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 04:45:22,092 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:45:22,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:45:22,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:45:22,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:45:22,094 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:45:22,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:45:22,095 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:45:22,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:45:22,095 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:45:22,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:45:22,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:45:22,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:45:22,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:45:22,096 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:45:22,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:45:22,096 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:45:22,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:45:22,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:45:22,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:45:22,097 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:45:22,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:45:22,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:45:22,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:45:22,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:45:22,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:45:22,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:45:22,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:45:22,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:45:22,099 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:45:22,099 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 04:45:22,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:45:22,437 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:45:22,441 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:45:22,442 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:45:22,443 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:45:22,444 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/mem_slave_tlm.1.cil.c [2020-10-15 04:45:22,505 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea7f154ed/1539a873733f4862b52fea926e582353/FLAG8c6670175 [2020-10-15 04:45:23,003 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:45:23,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/mem_slave_tlm.1.cil.c [2020-10-15 04:45:23,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea7f154ed/1539a873733f4862b52fea926e582353/FLAG8c6670175 [2020-10-15 04:45:23,335 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea7f154ed/1539a873733f4862b52fea926e582353 [2020-10-15 04:45:23,344 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:45:23,346 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:45:23,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:45:23,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:45:23,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:45:23,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:45:23" (1/1) ... [2020-10-15 04:45:23,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bee85d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:45:23, skipping insertion in model container [2020-10-15 04:45:23,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:45:23" (1/1) ... [2020-10-15 04:45:23,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:45:23,440 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:45:23,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:45:23,790 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:45:24,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:45:24,079 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:45:24,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:45:24 WrapperNode [2020-10-15 04:45:24,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:45:24,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:45:24,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:45:24,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:45:24,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:45:24" (1/1) ... [2020-10-15 04:45:24,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:45:24" (1/1) ... [2020-10-15 04:45:24,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:45:24" (1/1) ... [2020-10-15 04:45:24,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:45:24" (1/1) ... [2020-10-15 04:45:24,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:45:24" (1/1) ... [2020-10-15 04:45:24,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:45:24" (1/1) ... [2020-10-15 04:45:24,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:45:24" (1/1) ... [2020-10-15 04:45:24,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:45:24,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:45:24,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:45:24,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:45:24,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:45:24" (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 04:45:24,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:45:24,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:45:24,245 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-15 04:45:24,245 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_read [2020-10-15 04:45:24,245 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_write [2020-10-15 04:45:24,246 INFO L138 BoogieDeclarations]: Found implementation of procedure m_run [2020-10-15 04:45:24,246 INFO L138 BoogieDeclarations]: Found implementation of procedure s_run [2020-10-15 04:45:24,246 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-15 04:45:24,246 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-15 04:45:24,246 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:45:24,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:45:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 04:45:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-15 04:45:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_read [2020-10-15 04:45:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_write [2020-10-15 04:45:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure m_run [2020-10-15 04:45:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure s_run [2020-10-15 04:45:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-15 04:45:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-15 04:45:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:45:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:45:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:45:25,384 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:45:25,386 INFO L295 CfgBuilder]: Removed 13 assume(true) statements. [2020-10-15 04:45:25,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:45:25 BoogieIcfgContainer [2020-10-15 04:45:25,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:45:25,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:45:25,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:45:25,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:45:25,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:45:23" (1/3) ... [2020-10-15 04:45:25,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f28b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:45:25, skipping insertion in model container [2020-10-15 04:45:25,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:45:24" (2/3) ... [2020-10-15 04:45:25,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f28b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:45:25, skipping insertion in model container [2020-10-15 04:45:25,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:45:25" (3/3) ... [2020-10-15 04:45:25,411 INFO L109 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.1.cil.c [2020-10-15 04:45:25,422 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:45:25,437 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:45:25,452 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:45:25,487 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:45:25,487 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:45:25,487 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:45:25,487 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:45:25,488 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:45:25,488 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:45:25,488 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:45:25,488 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:45:25,520 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-15 04:45:25,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-15 04:45:25,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:25,535 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] [2020-10-15 04:45:25,535 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:25,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:25,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1545125351, now seen corresponding path program 1 times [2020-10-15 04:45:25,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:25,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460597789] [2020-10-15 04:45:25,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:25,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:26,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:26,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:26,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:26,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:26,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:26,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:26,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:27,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:27,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:28,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:28,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:29,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:29,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:30,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:30,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-15 04:45:30,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 04:45:30,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 04:45:30,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:30,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:30,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 04:45:30,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:45:30,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:45:30,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 04:45:31,176 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-15 04:45:31,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:31,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:31,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:31,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:45:31,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:31,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:45:31,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:31,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:31,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:31,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:31,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:31,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:31,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:45:31,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460597789] [2020-10-15 04:45:31,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:31,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:45:31,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100339234] [2020-10-15 04:45:31,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:45:31,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:31,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:45:31,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:45:31,245 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 4 states. [2020-10-15 04:45:31,453 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-15 04:45:33,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:33,276 INFO L93 Difference]: Finished difference Result 915 states and 1631 transitions. [2020-10-15 04:45:33,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:45:33,278 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-15 04:45:33,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:33,304 INFO L225 Difference]: With dead ends: 915 [2020-10-15 04:45:33,304 INFO L226 Difference]: Without dead ends: 626 [2020-10-15 04:45:33,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:45:33,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2020-10-15 04:45:33,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 528. [2020-10-15 04:45:33,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-10-15 04:45:33,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 867 transitions. [2020-10-15 04:45:33,440 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 867 transitions. Word has length 39 [2020-10-15 04:45:33,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:33,441 INFO L479 AbstractCegarLoop]: Abstraction has 528 states and 867 transitions. [2020-10-15 04:45:33,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:45:33,441 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 867 transitions. [2020-10-15 04:45:33,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-15 04:45:33,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:33,446 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] [2020-10-15 04:45:33,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:45:33,446 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:33,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:33,447 INFO L82 PathProgramCache]: Analyzing trace with hash 232379026, now seen corresponding path program 1 times [2020-10-15 04:45:33,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:33,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130485954] [2020-10-15 04:45:33,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:33,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:33,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:33,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:33,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:33,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:33,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:34,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:34,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:34,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:34,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:35,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:35,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:35,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-15 04:45:35,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:45:35,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2075 [2020-10-15 04:45:35,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:35,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:35,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 04:45:35,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:45:35,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:45:35,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:35,711 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-15 04:45:35,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:35,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:35,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:35,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:45:35,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:35,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:45:35,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:35,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:35,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:35,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:35,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:35,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:35,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:45:35,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130485954] [2020-10-15 04:45:35,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:35,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:45:35,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613125595] [2020-10-15 04:45:35,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:45:35,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:35,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:45:35,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:45:35,740 INFO L87 Difference]: Start difference. First operand 528 states and 867 transitions. Second operand 4 states. [2020-10-15 04:45:35,864 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-15 04:45:37,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:37,093 INFO L93 Difference]: Finished difference Result 1122 states and 1818 transitions. [2020-10-15 04:45:37,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:45:37,095 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-15 04:45:37,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:37,100 INFO L225 Difference]: With dead ends: 1122 [2020-10-15 04:45:37,100 INFO L226 Difference]: Without dead ends: 616 [2020-10-15 04:45:37,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:45:37,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2020-10-15 04:45:37,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 528. [2020-10-15 04:45:37,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-10-15 04:45:37,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 837 transitions. [2020-10-15 04:45:37,163 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 837 transitions. Word has length 40 [2020-10-15 04:45:37,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:37,164 INFO L479 AbstractCegarLoop]: Abstraction has 528 states and 837 transitions. [2020-10-15 04:45:37,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:45:37,164 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 837 transitions. [2020-10-15 04:45:37,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-15 04:45:37,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:37,167 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] [2020-10-15 04:45:37,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:45:37,167 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:37,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:37,168 INFO L82 PathProgramCache]: Analyzing trace with hash -133965430, now seen corresponding path program 1 times [2020-10-15 04:45:37,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:37,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417593561] [2020-10-15 04:45:37,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:37,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:37,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:37,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:37,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:37,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:37,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:37,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:37,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:37,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:38,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:38,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:39,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:39,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-15 04:45:39,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:45:39,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2369 [2020-10-15 04:45:39,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:39,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:39,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 04:45:39,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:45:39,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 04:45:39,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:39,727 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-15 04:45:39,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:39,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:39,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:39,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:45:39,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:39,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:45:39,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:39,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:39,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:39,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:39,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:39,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:39,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:45:39,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417593561] [2020-10-15 04:45:39,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:39,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:45:39,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225168872] [2020-10-15 04:45:39,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:45:39,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:39,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:45:39,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:45:39,750 INFO L87 Difference]: Start difference. First operand 528 states and 837 transitions. Second operand 4 states. [2020-10-15 04:45:39,885 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-15 04:45:41,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:41,048 INFO L93 Difference]: Finished difference Result 1122 states and 1760 transitions. [2020-10-15 04:45:41,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:45:41,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-15 04:45:41,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:41,053 INFO L225 Difference]: With dead ends: 1122 [2020-10-15 04:45:41,053 INFO L226 Difference]: Without dead ends: 616 [2020-10-15 04:45:41,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:45:41,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2020-10-15 04:45:41,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 528. [2020-10-15 04:45:41,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-10-15 04:45:41,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 803 transitions. [2020-10-15 04:45:41,098 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 803 transitions. Word has length 42 [2020-10-15 04:45:41,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:41,099 INFO L479 AbstractCegarLoop]: Abstraction has 528 states and 803 transitions. [2020-10-15 04:45:41,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:45:41,099 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 803 transitions. [2020-10-15 04:45:41,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-15 04:45:41,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:41,101 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] [2020-10-15 04:45:41,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:45:41,102 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:41,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:41,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1001637799, now seen corresponding path program 1 times [2020-10-15 04:45:41,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:41,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480890044] [2020-10-15 04:45:41,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:41,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:41,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:41,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:41,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:41,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:41,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:41,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:42,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:42,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:44,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:44,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-15 04:45:44,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:45:44,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3769 [2020-10-15 04:45:44,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:44,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:44,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 04:45:44,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 04:45:44,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-15 04:45:44,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:45,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:45,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:45,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:45,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:45:45,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:45,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 04:45:45,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:45,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:45,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:45,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:45,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 04:45:45,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:45,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:45:45,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480890044] [2020-10-15 04:45:45,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:45,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 04:45:45,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909650878] [2020-10-15 04:45:45,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 04:45:45,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:45,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 04:45:45,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:45:45,101 INFO L87 Difference]: Start difference. First operand 528 states and 803 transitions. Second operand 7 states. [2020-10-15 04:45:45,274 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-15 04:45:46,192 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-15 04:45:46,381 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 04:45:47,249 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 04:45:47,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:47,401 INFO L93 Difference]: Finished difference Result 1154 states and 1718 transitions. [2020-10-15 04:45:47,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 04:45:47,402 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2020-10-15 04:45:47,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:47,417 INFO L225 Difference]: With dead ends: 1154 [2020-10-15 04:45:47,417 INFO L226 Difference]: Without dead ends: 1151 [2020-10-15 04:45:47,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-15 04:45:47,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2020-10-15 04:45:47,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 980. [2020-10-15 04:45:47,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 980 states. [2020-10-15 04:45:47,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1494 transitions. [2020-10-15 04:45:47,509 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1494 transitions. Word has length 44 [2020-10-15 04:45:47,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:47,511 INFO L479 AbstractCegarLoop]: Abstraction has 980 states and 1494 transitions. [2020-10-15 04:45:47,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 04:45:47,511 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1494 transitions. [2020-10-15 04:45:47,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-15 04:45:47,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:47,513 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] [2020-10-15 04:45:47,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:45:47,513 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:47,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:47,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1632840042, now seen corresponding path program 1 times [2020-10-15 04:45:47,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:47,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159973110] [2020-10-15 04:45:47,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:47,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:47,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:47,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:47,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:47,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:48,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:48,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:48,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:48,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 04:45:48,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:45:48,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1453 [2020-10-15 04:45:48,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:48,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:48,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 04:45:48,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:45:48,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 04:45:48,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:49,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:49,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:49,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:49,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:45:49,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:49,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:45:49,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:49,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:49,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:49,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:49,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:49,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:45:49,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:45:49,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159973110] [2020-10-15 04:45:49,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:49,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:45:49,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859571107] [2020-10-15 04:45:49,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:45:49,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:49,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:45:49,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:45:49,124 INFO L87 Difference]: Start difference. First operand 980 states and 1494 transitions. Second operand 4 states. [2020-10-15 04:45:49,250 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 04:45:50,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:50,518 INFO L93 Difference]: Finished difference Result 2111 states and 3208 transitions. [2020-10-15 04:45:50,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:45:50,519 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-15 04:45:50,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:50,526 INFO L225 Difference]: With dead ends: 2111 [2020-10-15 04:45:50,527 INFO L226 Difference]: Without dead ends: 1153 [2020-10-15 04:45:50,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:45:50,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2020-10-15 04:45:50,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1004. [2020-10-15 04:45:50,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1004 states. [2020-10-15 04:45:50,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1472 transitions. [2020-10-15 04:45:50,626 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1472 transitions. Word has length 44 [2020-10-15 04:45:50,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:50,626 INFO L479 AbstractCegarLoop]: Abstraction has 1004 states and 1472 transitions. [2020-10-15 04:45:50,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:45:50,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1472 transitions. [2020-10-15 04:45:50,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-15 04:45:50,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:50,629 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] [2020-10-15 04:45:50,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:45:50,630 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:50,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:50,630 INFO L82 PathProgramCache]: Analyzing trace with hash 211129677, now seen corresponding path program 1 times [2020-10-15 04:45:50,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:50,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55052877] [2020-10-15 04:45:50,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:50,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:50,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:50,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:50,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:51,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:51,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:51,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:53,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:55,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:55,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-15 04:45:55,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:45:55,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4803 [2020-10-15 04:45:55,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:55,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:55,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 04:45:55,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 04:45:55,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 04:45:55,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:55,646 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-15 04:45:55,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:55,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:55,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:55,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:55,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:45:55,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:55,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 04:45:55,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:55,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:55,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:45:55,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:55,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 04:45:55,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:55,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:45:55,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55052877] [2020-10-15 04:45:55,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:55,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:45:55,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193075847] [2020-10-15 04:45:55,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:45:55,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:55,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:45:55,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:45:55,697 INFO L87 Difference]: Start difference. First operand 1004 states and 1472 transitions. Second operand 5 states. [2020-10-15 04:45:55,874 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-15 04:45:57,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:45:57,454 INFO L93 Difference]: Finished difference Result 1864 states and 2730 transitions. [2020-10-15 04:45:57,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:45:57,454 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-10-15 04:45:57,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:45:57,464 INFO L225 Difference]: With dead ends: 1864 [2020-10-15 04:45:57,464 INFO L226 Difference]: Without dead ends: 1228 [2020-10-15 04:45:57,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:45:57,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2020-10-15 04:45:57,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 990. [2020-10-15 04:45:57,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 990 states. [2020-10-15 04:45:57,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1452 transitions. [2020-10-15 04:45:57,576 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1452 transitions. Word has length 47 [2020-10-15 04:45:57,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:45:57,576 INFO L479 AbstractCegarLoop]: Abstraction has 990 states and 1452 transitions. [2020-10-15 04:45:57,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:45:57,576 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1452 transitions. [2020-10-15 04:45:57,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-15 04:45:57,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:45:57,578 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] [2020-10-15 04:45:57,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:45:57,579 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:45:57,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:45:57,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1589972372, now seen corresponding path program 1 times [2020-10-15 04:45:57,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:45:57,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729886580] [2020-10-15 04:45:57,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:45:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:57,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:57,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:57,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:58,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:58,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:58,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:58,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 04:45:58,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:45:58,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1203 [2020-10-15 04:45:58,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:58,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:58,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 04:45:58,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:45:58,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 04:45:58,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:45:58,969 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-15 04:45:58,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:45:58,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:45:58,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:45:58,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:45:58,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:45:58,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:45:58,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:45:58,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:45:58,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:45:58,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:45:58,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:45:58,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:45:58,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:45:58,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:45:58,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729886580] [2020-10-15 04:45:58,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:45:58,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:45:58,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392968807] [2020-10-15 04:45:58,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:45:58,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:45:58,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:45:58,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:45:58,996 INFO L87 Difference]: Start difference. First operand 990 states and 1452 transitions. Second operand 4 states. [2020-10-15 04:45:59,118 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-15 04:46:00,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:00,687 INFO L93 Difference]: Finished difference Result 2745 states and 4096 transitions. [2020-10-15 04:46:00,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:46:00,688 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-15 04:46:00,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:00,699 INFO L225 Difference]: With dead ends: 2745 [2020-10-15 04:46:00,699 INFO L226 Difference]: Without dead ends: 1766 [2020-10-15 04:46:00,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:46:00,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2020-10-15 04:46:00,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1583. [2020-10-15 04:46:00,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-10-15 04:46:00,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2252 transitions. [2020-10-15 04:46:00,873 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2252 transitions. Word has length 48 [2020-10-15 04:46:00,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:00,873 INFO L479 AbstractCegarLoop]: Abstraction has 1583 states and 2252 transitions. [2020-10-15 04:46:00,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:46:00,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2252 transitions. [2020-10-15 04:46:00,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 04:46:00,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:00,877 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] [2020-10-15 04:46:00,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:46:00,877 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:00,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:00,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1607730664, now seen corresponding path program 1 times [2020-10-15 04:46:00,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:00,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965870150] [2020-10-15 04:46:00,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:00,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:00,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:01,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:01,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 04:46:01,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:46:01,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-10-15 04:46:01,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:01,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:01,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 04:46:01,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:46:01,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-15 04:46:01,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:01,571 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-15 04:46:01,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:01,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:01,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:01,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:46:01,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:01,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:46:01,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:01,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:01,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:01,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:01,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:01,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:01,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:46:01,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965870150] [2020-10-15 04:46:01,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:46:01,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:46:01,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640217228] [2020-10-15 04:46:01,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:46:01,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:01,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:46:01,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:46:01,596 INFO L87 Difference]: Start difference. First operand 1583 states and 2252 transitions. Second operand 4 states. [2020-10-15 04:46:01,723 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 04:46:03,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:03,194 INFO L93 Difference]: Finished difference Result 3751 states and 5439 transitions. [2020-10-15 04:46:03,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:46:03,195 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-10-15 04:46:03,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:03,209 INFO L225 Difference]: With dead ends: 3751 [2020-10-15 04:46:03,210 INFO L226 Difference]: Without dead ends: 2186 [2020-10-15 04:46:03,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:46:03,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2186 states. [2020-10-15 04:46:03,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2186 to 1998. [2020-10-15 04:46:03,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1998 states. [2020-10-15 04:46:03,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1998 states to 1998 states and 2870 transitions. [2020-10-15 04:46:03,451 INFO L78 Accepts]: Start accepts. Automaton has 1998 states and 2870 transitions. Word has length 63 [2020-10-15 04:46:03,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:03,452 INFO L479 AbstractCegarLoop]: Abstraction has 1998 states and 2870 transitions. [2020-10-15 04:46:03,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:46:03,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1998 states and 2870 transitions. [2020-10-15 04:46:03,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 04:46:03,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:03,455 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] [2020-10-15 04:46:03,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:46:03,456 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:03,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:03,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1918135184, now seen corresponding path program 1 times [2020-10-15 04:46:03,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:03,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317220] [2020-10-15 04:46:03,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:03,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:03,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:03,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:04,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:04,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 04:46:04,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:46:04,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 883 [2020-10-15 04:46:04,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:04,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:04,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:46:04,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-15 04:46:04,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 04:46:04,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:04,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:04,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:04,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:04,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:46:04,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:04,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:46:04,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:04,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:04,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:04,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:04,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:04,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 04:46:04,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:46:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:04,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:04,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:04,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 04:46:04,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:04,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 04:46:04,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:04,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:04,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:46:04,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:04,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 04:46:04,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:04,645 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 04:46:04,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317220] [2020-10-15 04:46:04,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:46:04,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 04:46:04,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852168587] [2020-10-15 04:46:04,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 04:46:04,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:04,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 04:46:04,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:46:04,650 INFO L87 Difference]: Start difference. First operand 1998 states and 2870 transitions. Second operand 7 states. [2020-10-15 04:46:05,027 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 04:46:05,817 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-15 04:46:06,321 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-15 04:46:08,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:08,366 INFO L93 Difference]: Finished difference Result 4400 states and 6449 transitions. [2020-10-15 04:46:08,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 04:46:08,367 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-10-15 04:46:08,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:08,386 INFO L225 Difference]: With dead ends: 4400 [2020-10-15 04:46:08,386 INFO L226 Difference]: Without dead ends: 3467 [2020-10-15 04:46:08,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-15 04:46:08,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3467 states. [2020-10-15 04:46:08,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3467 to 3120. [2020-10-15 04:46:08,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3120 states. [2020-10-15 04:46:08,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 4600 transitions. [2020-10-15 04:46:08,742 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 4600 transitions. Word has length 74 [2020-10-15 04:46:08,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:08,742 INFO L479 AbstractCegarLoop]: Abstraction has 3120 states and 4600 transitions. [2020-10-15 04:46:08,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 04:46:08,743 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 4600 transitions. [2020-10-15 04:46:08,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 04:46:08,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:08,747 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] [2020-10-15 04:46:08,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:46:08,747 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:08,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:08,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1262933163, now seen corresponding path program 1 times [2020-10-15 04:46:08,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:08,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166403185] [2020-10-15 04:46:08,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:08,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:08,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:09,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:09,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-15 04:46:09,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:46:09,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 509 [2020-10-15 04:46:09,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:09,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:09,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 04:46:09,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-15 04:46:09,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 04:46:09,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:46:09,534 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-15 04:46:09,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:09,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:09,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:09,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:09,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:46:09,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:09,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 04:46:09,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:09,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:09,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:09,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:09,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:09,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:09,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:46:09,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:09,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:09,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:09,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 04:46:09,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:09,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 04:46:09,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:09,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:09,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:46:09,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:09,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 04:46:09,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:46:09,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:46:09,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166403185] [2020-10-15 04:46:09,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:46:09,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 04:46:09,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461677105] [2020-10-15 04:46:09,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 04:46:09,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:09,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 04:46:09,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-15 04:46:09,747 INFO L87 Difference]: Start difference. First operand 3120 states and 4600 transitions. Second operand 10 states. [2020-10-15 04:46:10,136 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 04:46:10,332 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 04:46:11,609 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 04:46:11,774 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 04:46:12,080 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-15 04:46:12,291 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-15 04:46:13,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:13,816 INFO L93 Difference]: Finished difference Result 6340 states and 9520 transitions. [2020-10-15 04:46:13,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 04:46:13,817 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-10-15 04:46:13,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:13,836 INFO L225 Difference]: With dead ends: 6340 [2020-10-15 04:46:13,836 INFO L226 Difference]: Without dead ends: 3238 [2020-10-15 04:46:13,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2020-10-15 04:46:13,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3238 states. [2020-10-15 04:46:14,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3238 to 3010. [2020-10-15 04:46:14,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3010 states. [2020-10-15 04:46:14,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 4400 transitions. [2020-10-15 04:46:14,130 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 4400 transitions. Word has length 75 [2020-10-15 04:46:14,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:14,130 INFO L479 AbstractCegarLoop]: Abstraction has 3010 states and 4400 transitions. [2020-10-15 04:46:14,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 04:46:14,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 4400 transitions. [2020-10-15 04:46:14,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-15 04:46:14,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:14,137 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:46:14,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:46:14,137 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:14,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:14,138 INFO L82 PathProgramCache]: Analyzing trace with hash 778836152, now seen corresponding path program 1 times [2020-10-15 04:46:14,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:14,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990945138] [2020-10-15 04:46:14,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:14,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:14,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:14,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:14,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:14,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:14,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:14,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:14,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:14,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:15,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:15,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:16,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:16,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:17,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:17,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:17,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:17,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:19,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:19,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-15 04:46:19,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 04:46:19,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 04:46:19,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:19,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:19,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 04:46:19,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-15 04:46:19,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 04:46:19,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:19,301 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-15 04:46:19,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:19,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:19,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:19,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:46:19,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:19,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:46:19,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:19,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:19,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:19,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:19,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:19,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:19,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 04:46:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:19,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:19,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:19,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:19,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 04:46:19,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:46:19,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-15 04:46:19,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:19,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:46:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 04:46:19,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:19,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 04:46:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:19,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:19,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:19,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:46:19,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:19,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:46:19,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:19,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:19,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:19,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:19,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:19,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:19,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-15 04:46:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:19,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:19,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:19,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:19,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 04:46:19,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:46:19,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-15 04:46:19,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:19,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:19,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:46:19,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:46:19,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 04:46:19,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:19,611 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 04:46:19,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990945138] [2020-10-15 04:46:19,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:46:19,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 04:46:19,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665175986] [2020-10-15 04:46:19,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 04:46:19,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:19,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 04:46:19,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:46:19,612 INFO L87 Difference]: Start difference. First operand 3010 states and 4400 transitions. Second operand 7 states. [2020-10-15 04:46:19,777 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 04:46:21,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:21,392 INFO L93 Difference]: Finished difference Result 8899 states and 13424 transitions. [2020-10-15 04:46:21,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 04:46:21,393 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 106 [2020-10-15 04:46:21,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:21,425 INFO L225 Difference]: With dead ends: 8899 [2020-10-15 04:46:21,426 INFO L226 Difference]: Without dead ends: 5491 [2020-10-15 04:46:21,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-15 04:46:21,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5491 states. [2020-10-15 04:46:21,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5491 to 4837. [2020-10-15 04:46:21,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4837 states. [2020-10-15 04:46:21,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4837 states to 4837 states and 7299 transitions. [2020-10-15 04:46:21,935 INFO L78 Accepts]: Start accepts. Automaton has 4837 states and 7299 transitions. Word has length 106 [2020-10-15 04:46:21,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:21,935 INFO L479 AbstractCegarLoop]: Abstraction has 4837 states and 7299 transitions. [2020-10-15 04:46:21,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 04:46:21,935 INFO L276 IsEmpty]: Start isEmpty. Operand 4837 states and 7299 transitions. [2020-10-15 04:46:21,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-15 04:46:21,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:21,941 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:46:21,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:46:21,941 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:21,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:21,941 INFO L82 PathProgramCache]: Analyzing trace with hash 11033595, now seen corresponding path program 1 times [2020-10-15 04:46:21,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:21,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413946483] [2020-10-15 04:46:21,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:21,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:22,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:22,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:22,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:22,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:22,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:22,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:22,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:24,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:24,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:27,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:27,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 04:46:27,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:46:27,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-15 04:46:27,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:27,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:27,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 04:46:27,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-15 04:46:27,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 04:46:27,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:27,145 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-15 04:46:27,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:27,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:27,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:27,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:46:27,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:27,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:46:27,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:27,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:27,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:27,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:27,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:27,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:27,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:46:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:27,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:27,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:27,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:46:27,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:27,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:46:27,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:27,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:27,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:46:27,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:27,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 04:46:27,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:27,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-15 04:46:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:27,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:27,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:27,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:27,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 04:46:27,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:46:27,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-15 04:46:27,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:27,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:27,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 04:46:27,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:46:27,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 04:46:27,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:27,361 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 04:46:27,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413946483] [2020-10-15 04:46:27,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:46:27,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 04:46:27,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622605006] [2020-10-15 04:46:27,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 04:46:27,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:27,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 04:46:27,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-15 04:46:27,364 INFO L87 Difference]: Start difference. First operand 4837 states and 7299 transitions. Second operand 11 states. [2020-10-15 04:46:27,677 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-15 04:46:27,971 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-15 04:46:28,443 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 129 [2020-10-15 04:46:29,155 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 127 [2020-10-15 04:46:29,821 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 130 [2020-10-15 04:46:30,522 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-10-15 04:46:31,967 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-15 04:46:32,718 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-15 04:46:32,927 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-15 04:46:33,580 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-15 04:46:33,820 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-15 04:46:34,166 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 04:46:34,458 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-15 04:46:35,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:35,735 INFO L93 Difference]: Finished difference Result 14080 states and 22312 transitions. [2020-10-15 04:46:35,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-15 04:46:35,736 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2020-10-15 04:46:35,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:35,811 INFO L225 Difference]: With dead ends: 14080 [2020-10-15 04:46:35,811 INFO L226 Difference]: Without dead ends: 10692 [2020-10-15 04:46:35,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=387, Invalid=1965, Unknown=0, NotChecked=0, Total=2352 [2020-10-15 04:46:35,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10692 states. [2020-10-15 04:46:36,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10692 to 9512. [2020-10-15 04:46:36,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9512 states. [2020-10-15 04:46:36,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9512 states to 9512 states and 15014 transitions. [2020-10-15 04:46:36,932 INFO L78 Accepts]: Start accepts. Automaton has 9512 states and 15014 transitions. Word has length 88 [2020-10-15 04:46:36,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:36,932 INFO L479 AbstractCegarLoop]: Abstraction has 9512 states and 15014 transitions. [2020-10-15 04:46:36,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 04:46:36,932 INFO L276 IsEmpty]: Start isEmpty. Operand 9512 states and 15014 transitions. [2020-10-15 04:46:36,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-15 04:46:36,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:36,939 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:46:36,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 04:46:36,940 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:36,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:36,940 INFO L82 PathProgramCache]: Analyzing trace with hash 937623168, now seen corresponding path program 1 times [2020-10-15 04:46:36,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:36,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860682019] [2020-10-15 04:46:36,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:36,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:37,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:37,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:37,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:37,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:37,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:37,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:37,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:38,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:41,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:41,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 04:46:41,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:46:41,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 04:46:41,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:41,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:41,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 04:46:41,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-15 04:46:41,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 04:46:41,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:46:42,269 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-15 04:46:42,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:46:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:42,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:42,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:42,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:46:42,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:42,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:46:42,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:42,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:42,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:46:42,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:42,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:46:42,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:46:42,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:46:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:42,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:42,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:42,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:46:42,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:46:42,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 04:46:42,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:42,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:42,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:46:42,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:46:42,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 04:46:42,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:42,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-15 04:46:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:42,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:42,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:42,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:46:42,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 04:46:42,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:46:42,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-15 04:46:42,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:46:42,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:46:42,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 04:46:42,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:46:42,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 04:46:42,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:46:42,578 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 04:46:42,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860682019] [2020-10-15 04:46:42,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:46:42,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 04:46:42,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589042391] [2020-10-15 04:46:42,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 04:46:42,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:46:42,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 04:46:42,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-15 04:46:42,579 INFO L87 Difference]: Start difference. First operand 9512 states and 15014 transitions. Second operand 14 states. [2020-10-15 04:46:42,855 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 128 [2020-10-15 04:46:43,282 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 131 [2020-10-15 04:46:43,610 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 134 [2020-10-15 04:46:44,319 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 131 [2020-10-15 04:46:45,361 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 131 [2020-10-15 04:46:45,654 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 136 [2020-10-15 04:46:45,787 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 04:46:45,969 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-10-15 04:46:46,287 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 04:46:46,571 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 129 [2020-10-15 04:46:46,903 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 132 [2020-10-15 04:46:48,234 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 04:46:48,663 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 04:46:48,828 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-15 04:46:49,062 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 04:46:49,771 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-15 04:46:49,941 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-15 04:46:50,128 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-15 04:46:50,331 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 04:46:50,500 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 04:46:51,489 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-15 04:46:52,669 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 04:46:52,834 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-15 04:46:53,060 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 04:46:54,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:46:54,391 INFO L93 Difference]: Finished difference Result 22060 states and 39101 transitions. [2020-10-15 04:46:54,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-15 04:46:54,391 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 89 [2020-10-15 04:46:54,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:46:54,516 INFO L225 Difference]: With dead ends: 22060 [2020-10-15 04:46:54,516 INFO L226 Difference]: Without dead ends: 22057 [2020-10-15 04:46:54,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1437 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=662, Invalid=3894, Unknown=0, NotChecked=0, Total=4556 [2020-10-15 04:46:54,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22057 states. [2020-10-15 04:46:57,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22057 to 19344. [2020-10-15 04:46:57,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19344 states. [2020-10-15 04:46:57,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19344 states to 19344 states and 33430 transitions. [2020-10-15 04:46:57,687 INFO L78 Accepts]: Start accepts. Automaton has 19344 states and 33430 transitions. Word has length 89 [2020-10-15 04:46:57,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:46:57,688 INFO L479 AbstractCegarLoop]: Abstraction has 19344 states and 33430 transitions. [2020-10-15 04:46:57,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 04:46:57,688 INFO L276 IsEmpty]: Start isEmpty. Operand 19344 states and 33430 transitions. [2020-10-15 04:46:57,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-15 04:46:57,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:46:57,694 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:46:57,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 04:46:57,694 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:46:57,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:46:57,695 INFO L82 PathProgramCache]: Analyzing trace with hash 183121412, now seen corresponding path program 1 times [2020-10-15 04:46:57,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:46:57,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182885756] [2020-10-15 04:46:57,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:46:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:46:57,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:57,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:57,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:57,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:57,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:57,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:57,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:46:58,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:00,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:02,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:02,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-15 04:47:02,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:47:02,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 04:47:02,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:02,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:02,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 04:47:02,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 04:47:02,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-15 04:47:02,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:02,885 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-15 04:47:02,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:02,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:02,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:02,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:47:02,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:02,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:47:02,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:02,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:02,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:47:02,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:02,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 04:47:02,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:02,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:47:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:02,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:02,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:02,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:47:02,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:02,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 04:47:02,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:02,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:02,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:47:02,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:47:02,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 04:47:02,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:03,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-15 04:47:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:03,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:03,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:03,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:03,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 04:47:03,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:47:03,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-15 04:47:03,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:03,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:03,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 04:47:03,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:47:03,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 04:47:03,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:03,111 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 04:47:03,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182885756] [2020-10-15 04:47:03,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:47:03,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 04:47:03,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380622228] [2020-10-15 04:47:03,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 04:47:03,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:03,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 04:47:03,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-15 04:47:03,113 INFO L87 Difference]: Start difference. First operand 19344 states and 33430 transitions. Second operand 13 states. [2020-10-15 04:47:03,382 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 127 [2020-10-15 04:47:04,244 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 129 [2020-10-15 04:47:04,512 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 131 [2020-10-15 04:47:04,979 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 129 [2020-10-15 04:47:05,319 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-15 04:47:05,948 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-15 04:47:06,891 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-10-15 04:47:07,799 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-15 04:47:08,284 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-15 04:47:08,621 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-15 04:47:08,814 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 04:47:09,289 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-15 04:47:09,926 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 04:47:10,751 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-15 04:47:13,006 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 04:47:13,321 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-15 04:47:14,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:14,218 INFO L93 Difference]: Finished difference Result 42319 states and 81074 transitions. [2020-10-15 04:47:14,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-15 04:47:14,219 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 91 [2020-10-15 04:47:14,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:14,553 INFO L225 Difference]: With dead ends: 42319 [2020-10-15 04:47:14,553 INFO L226 Difference]: Without dead ends: 42316 [2020-10-15 04:47:14,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=404, Invalid=1576, Unknown=0, NotChecked=0, Total=1980 [2020-10-15 04:47:14,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42316 states. [2020-10-15 04:47:18,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42316 to 37662. [2020-10-15 04:47:18,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37662 states. [2020-10-15 04:47:19,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37662 states to 37662 states and 72343 transitions. [2020-10-15 04:47:19,316 INFO L78 Accepts]: Start accepts. Automaton has 37662 states and 72343 transitions. Word has length 91 [2020-10-15 04:47:19,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:19,317 INFO L479 AbstractCegarLoop]: Abstraction has 37662 states and 72343 transitions. [2020-10-15 04:47:19,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 04:47:19,317 INFO L276 IsEmpty]: Start isEmpty. Operand 37662 states and 72343 transitions. [2020-10-15 04:47:19,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-15 04:47:19,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:19,326 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:47:19,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 04:47:19,327 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:19,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:19,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1977378199, now seen corresponding path program 1 times [2020-10-15 04:47:19,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:19,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529977564] [2020-10-15 04:47:19,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:19,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:19,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:19,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:19,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:19,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:19,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:19,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:21,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:23,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:23,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:23,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:24,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:24,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-15 04:47:24,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:47:24,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 04:47:24,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:24,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:24,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 04:47:24,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 04:47:24,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-15 04:47:24,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:24,504 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-15 04:47:24,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:24,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:24,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:24,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:47:24,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:24,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:47:24,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:24,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:24,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:47:24,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:24,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 04:47:24,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:24,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:47:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:24,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:24,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:24,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:47:24,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:24,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 04:47:24,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:24,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:24,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:47:24,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:47:24,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 04:47:24,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:24,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-15 04:47:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:24,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:24,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:24,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:24,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 04:47:24,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:47:24,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-15 04:47:24,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:24,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:24,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 04:47:24,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:47:24,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 04:47:24,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:24,697 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 04:47:24,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529977564] [2020-10-15 04:47:24,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:47:24,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 04:47:24,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866653606] [2020-10-15 04:47:24,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 04:47:24,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:24,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 04:47:24,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-15 04:47:24,699 INFO L87 Difference]: Start difference. First operand 37662 states and 72343 transitions. Second operand 11 states. [2020-10-15 04:47:24,857 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-15 04:47:25,444 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-15 04:47:25,715 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-15 04:47:26,294 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-15 04:47:27,614 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 04:47:28,061 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-15 04:47:28,612 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-15 04:47:29,921 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-15 04:47:32,070 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-15 04:47:33,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:33,811 INFO L93 Difference]: Finished difference Result 67065 states and 130954 transitions. [2020-10-15 04:47:33,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-15 04:47:33,811 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2020-10-15 04:47:33,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:34,071 INFO L225 Difference]: With dead ends: 67065 [2020-10-15 04:47:34,072 INFO L226 Difference]: Without dead ends: 41634 [2020-10-15 04:47:34,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=281, Invalid=979, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 04:47:34,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41634 states. [2020-10-15 04:47:38,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41634 to 37566. [2020-10-15 04:47:38,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37566 states. [2020-10-15 04:47:38,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37566 states to 37566 states and 72215 transitions. [2020-10-15 04:47:38,599 INFO L78 Accepts]: Start accepts. Automaton has 37566 states and 72215 transitions. Word has length 92 [2020-10-15 04:47:38,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:38,600 INFO L479 AbstractCegarLoop]: Abstraction has 37566 states and 72215 transitions. [2020-10-15 04:47:38,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 04:47:38,600 INFO L276 IsEmpty]: Start isEmpty. Operand 37566 states and 72215 transitions. [2020-10-15 04:47:38,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 04:47:38,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:38,606 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:47:38,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 04:47:38,607 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:38,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:38,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1719702171, now seen corresponding path program 1 times [2020-10-15 04:47:38,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:38,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126609852] [2020-10-15 04:47:38,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:38,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:38,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:38,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:38,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:38,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:38,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:38,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:38,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:39,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:39,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:39,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:39,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:39,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:40,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:40,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:40,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:41,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:41,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:43,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:43,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-15 04:47:43,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-15 04:47:43,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 04:47:43,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:43,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:43,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 04:47:43,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:47:43,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-15 04:47:43,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:43,761 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-15 04:47:43,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:47:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:43,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:43,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:43,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:47:43,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:43,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:47:43,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:43,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:43,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:43,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:43,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:43,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:43,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:47:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:43,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:43,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:43,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:47:43,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:43,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 04:47:43,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:43,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:43,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:47:43,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:47:43,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 04:47:43,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:43,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-15 04:47:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:43,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:43,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:44,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:44,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:44,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-15 04:47:44,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:47:44,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-15 04:47:44,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:44,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:44,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:47:44,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:44,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 04:47:44,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:44,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-15 04:47:44,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:44,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:44,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:47:44,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:47:44,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:47:44,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:47:44,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:47:44,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:47:44,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:47:44,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:47:44,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:47:44,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:47:44,157 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 04:47:44,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126609852] [2020-10-15 04:47:44,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:47:44,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 04:47:44,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521462946] [2020-10-15 04:47:44,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 04:47:44,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:47:44,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 04:47:44,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:47:44,159 INFO L87 Difference]: Start difference. First operand 37566 states and 72215 transitions. Second operand 8 states. [2020-10-15 04:47:44,290 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-15 04:47:51,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:47:51,186 INFO L93 Difference]: Finished difference Result 78102 states and 159965 transitions. [2020-10-15 04:47:51,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 04:47:51,187 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2020-10-15 04:47:51,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:47:51,472 INFO L225 Difference]: With dead ends: 78102 [2020-10-15 04:47:51,472 INFO L226 Difference]: Without dead ends: 40937 [2020-10-15 04:47:52,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-15 04:47:52,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40937 states. [2020-10-15 04:47:57,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40937 to 38851. [2020-10-15 04:47:57,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38851 states. [2020-10-15 04:47:58,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38851 states to 38851 states and 73694 transitions. [2020-10-15 04:47:58,233 INFO L78 Accepts]: Start accepts. Automaton has 38851 states and 73694 transitions. Word has length 103 [2020-10-15 04:47:58,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:47:58,233 INFO L479 AbstractCegarLoop]: Abstraction has 38851 states and 73694 transitions. [2020-10-15 04:47:58,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 04:47:58,234 INFO L276 IsEmpty]: Start isEmpty. Operand 38851 states and 73694 transitions. [2020-10-15 04:47:58,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 04:47:58,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:47:58,241 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:47:58,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 04:47:58,242 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:47:58,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:47:58,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1474969106, now seen corresponding path program 1 times [2020-10-15 04:47:58,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:47:58,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006908096] [2020-10-15 04:47:58,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:47:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:47:58,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:58,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:58,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:58,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:58,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:58,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:58,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:58,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:58,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:58,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:58,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:58,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:59,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:59,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:47:59,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:00,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:00,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:00,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:03,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:03,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-15 04:48:03,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-15 04:48:03,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 04:48:03,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:03,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:03,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:48:03,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-15 04:48:03,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-15 04:48:03,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:03,398 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-15 04:48:03,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:48:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:03,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:03,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:03,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:48:03,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:03,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:48:03,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:03,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:03,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:48:03,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:03,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:48:03,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:03,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:48:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:03,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:03,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:03,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:48:03,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:03,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:48:03,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:03,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:03,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:48:03,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:03,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 04:48:03,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:03,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-15 04:48:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:03,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:03,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:03,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:03,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:03,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:03,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:03,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:03,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:03,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-15 04:48:03,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:48:03,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-15 04:48:03,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:03,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:03,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:48:03,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-15 04:48:03,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 04:48:03,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:03,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-15 04:48:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:03,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:03,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:03,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:48:03,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:03,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:48:03,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:03,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:03,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:48:03,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:03,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 04:48:03,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:03,593 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:48:03,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006908096] [2020-10-15 04:48:03,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:48:03,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 04:48:03,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340248452] [2020-10-15 04:48:03,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 04:48:03,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:48:03,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 04:48:03,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:48:03,595 INFO L87 Difference]: Start difference. First operand 38851 states and 73694 transitions. Second operand 7 states. [2020-10-15 04:48:04,012 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-15 04:48:04,212 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-15 04:48:13,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:48:13,010 INFO L93 Difference]: Finished difference Result 90675 states and 231536 transitions. [2020-10-15 04:48:13,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 04:48:13,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2020-10-15 04:48:13,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:48:13,332 INFO L225 Difference]: With dead ends: 90675 [2020-10-15 04:48:13,332 INFO L226 Difference]: Without dead ends: 52443 [2020-10-15 04:48:13,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-15 04:48:13,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52443 states. [2020-10-15 04:48:22,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52443 to 50242. [2020-10-15 04:48:22,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50242 states. [2020-10-15 04:48:23,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50242 states to 50242 states and 116256 transitions. [2020-10-15 04:48:23,335 INFO L78 Accepts]: Start accepts. Automaton has 50242 states and 116256 transitions. Word has length 103 [2020-10-15 04:48:23,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:48:23,335 INFO L479 AbstractCegarLoop]: Abstraction has 50242 states and 116256 transitions. [2020-10-15 04:48:23,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 04:48:23,335 INFO L276 IsEmpty]: Start isEmpty. Operand 50242 states and 116256 transitions. [2020-10-15 04:48:23,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-15 04:48:23,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:48:23,343 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:48:23,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 04:48:23,343 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:48:23,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:48:23,343 INFO L82 PathProgramCache]: Analyzing trace with hash -2084430468, now seen corresponding path program 1 times [2020-10-15 04:48:23,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:48:23,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031460845] [2020-10-15 04:48:23,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:48:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:23,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:23,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:23,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:23,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:23,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:23,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:23,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:23,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:23,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:23,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:23,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:23,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:24,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:24,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:24,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:24,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:28,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:28,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 04:48:28,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 04:48:28,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 04:48:28,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:28,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:28,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:48:28,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-15 04:48:28,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 04:48:28,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:28,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:48:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:28,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:28,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:28,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:48:28,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:28,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:48:28,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:28,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:28,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:48:28,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:28,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:48:28,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:28,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 04:48:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:28,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:28,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:28,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 04:48:28,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:28,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:48:28,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:28,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:28,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:48:28,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:28,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 04:48:28,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:28,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-15 04:48:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:28,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:28,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:28,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:28,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:28,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:28,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:28,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:28,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-15 04:48:28,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:48:28,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 04:48:28,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:28,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:28,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:48:28,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:28,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 04:48:28,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:28,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-15 04:48:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:28,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:28,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:48:28,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:48:28,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:48:28,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 04:48:28,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:48:28,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:48:28,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:48:28,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:48:28,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:48:28,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:48:28,649 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 04:48:28,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031460845] [2020-10-15 04:48:28,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:48:28,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 04:48:28,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591985205] [2020-10-15 04:48:28,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 04:48:28,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:48:28,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 04:48:28,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:48:28,651 INFO L87 Difference]: Start difference. First operand 50242 states and 116256 transitions. Second operand 6 states. [2020-10-15 04:48:29,061 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-15 04:48:38,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:48:38,279 INFO L93 Difference]: Finished difference Result 106093 states and 305449 transitions. [2020-10-15 04:48:38,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 04:48:38,279 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-10-15 04:48:38,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:48:38,681 INFO L225 Difference]: With dead ends: 106093 [2020-10-15 04:48:38,681 INFO L226 Difference]: Without dead ends: 56534 [2020-10-15 04:48:39,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:48:39,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56534 states. [2020-10-15 04:48:53,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56534 to 52644. [2020-10-15 04:48:53,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52644 states. [2020-10-15 04:48:54,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52644 states to 52644 states and 128435 transitions. [2020-10-15 04:48:54,293 INFO L78 Accepts]: Start accepts. Automaton has 52644 states and 128435 transitions. Word has length 106 [2020-10-15 04:48:54,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:48:54,293 INFO L479 AbstractCegarLoop]: Abstraction has 52644 states and 128435 transitions. [2020-10-15 04:48:54,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 04:48:54,293 INFO L276 IsEmpty]: Start isEmpty. Operand 52644 states and 128435 transitions. [2020-10-15 04:48:54,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-15 04:48:54,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:48:54,303 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:48:54,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 04:48:54,303 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:48:54,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:48:54,304 INFO L82 PathProgramCache]: Analyzing trace with hash 134530464, now seen corresponding path program 1 times [2020-10-15 04:48:54,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:48:54,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469454218] [2020-10-15 04:48:54,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:48:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:48:54,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:54,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:54,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:54,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:54,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:54,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:48:56,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking...