/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=NARROWEST --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.4.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:41:20,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:41:20,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:41:20,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:41:20,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:41:20,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:41:20,137 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:41:20,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:41:20,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:41:20,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:41:20,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:41:20,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:41:20,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:41:20,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:41:20,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:41:20,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:41:20,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:41:20,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:41:20,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:41:20,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:41:20,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:41:20,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:41:20,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:41:20,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:41:20,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:41:20,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:41:20,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:41:20,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:41:20,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:41:20,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:41:20,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:41:20,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:41:20,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:41:20,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:41:20,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:41:20,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:41:20,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:41:20,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:41:20,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:41:20,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:41:20,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:41:20,167 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 [2020-10-13 15:41:20,188 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:41:20,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:41:20,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:41:20,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:41:20,190 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:41:20,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:41:20,191 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:41:20,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:41:20,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:41:20,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:41:20,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:41:20,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:41:20,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:41:20,192 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:41:20,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:41:20,192 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:41:20,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:41:20,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:41:20,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:41:20,193 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:41:20,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:41:20,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:41:20,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:41:20,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:41:20,194 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:41:20,194 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:41:20,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:41:20,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:41:20,195 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:41:20,195 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 15:41:20,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:41:20,533 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:41:20,537 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:41:20,539 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:41:20,540 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:41:20,541 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/mem_slave_tlm.4.cil.c [2020-10-13 15:41:20,605 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16a55a15a/3ccd75f465d644c3b0f3fe4afe8e2ae3/FLAGf0c192228 [2020-10-13 15:41:21,158 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:41:21,159 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/mem_slave_tlm.4.cil.c [2020-10-13 15:41:21,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16a55a15a/3ccd75f465d644c3b0f3fe4afe8e2ae3/FLAGf0c192228 [2020-10-13 15:41:21,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16a55a15a/3ccd75f465d644c3b0f3fe4afe8e2ae3 [2020-10-13 15:41:21,438 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:41:21,441 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:41:21,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:41:21,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:41:21,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:41:21,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:41:21" (1/1) ... [2020-10-13 15:41:21,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@603d5fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:41:21, skipping insertion in model container [2020-10-13 15:41:21,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:41:21" (1/1) ... [2020-10-13 15:41:21,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:41:21,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:41:21,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:41:21,848 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:41:22,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:41:22,055 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:41:22,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:41:22 WrapperNode [2020-10-13 15:41:22,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:41:22,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:41:22,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:41:22,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:41:22,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:41:22" (1/1) ... [2020-10-13 15:41:22,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:41:22" (1/1) ... [2020-10-13 15:41:22,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:41:22" (1/1) ... [2020-10-13 15:41:22,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:41:22" (1/1) ... [2020-10-13 15:41:22,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:41:22" (1/1) ... [2020-10-13 15:41:22,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:41:22" (1/1) ... [2020-10-13 15:41:22,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:41:22" (1/1) ... [2020-10-13 15:41:22,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:41:22,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:41:22,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:41:22,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:41:22,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:41:22" (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 [2020-10-13 15:41:22,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:41:22,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:41:22,239 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-13 15:41:22,239 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_read [2020-10-13 15:41:22,239 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_write [2020-10-13 15:41:22,240 INFO L138 BoogieDeclarations]: Found implementation of procedure m_run [2020-10-13 15:41:22,240 INFO L138 BoogieDeclarations]: Found implementation of procedure s_run [2020-10-13 15:41:22,241 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-13 15:41:22,242 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-13 15:41:22,242 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:41:22,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:41:22,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 15:41:22,242 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-13 15:41:22,242 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_read [2020-10-13 15:41:22,243 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_write [2020-10-13 15:41:22,243 INFO L130 BoogieDeclarations]: Found specification of procedure m_run [2020-10-13 15:41:22,244 INFO L130 BoogieDeclarations]: Found specification of procedure s_run [2020-10-13 15:41:22,244 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-13 15:41:22,244 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-13 15:41:22,244 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:41:22,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:41:22,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:41:23,251 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:41:23,251 INFO L295 CfgBuilder]: Removed 13 assume(true) statements. [2020-10-13 15:41:23,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:41:23 BoogieIcfgContainer [2020-10-13 15:41:23,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:41:23,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:41:23,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:41:23,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:41:23,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:41:21" (1/3) ... [2020-10-13 15:41:23,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6790bc68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:41:23, skipping insertion in model container [2020-10-13 15:41:23,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:41:22" (2/3) ... [2020-10-13 15:41:23,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6790bc68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:41:23, skipping insertion in model container [2020-10-13 15:41:23,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:41:23" (3/3) ... [2020-10-13 15:41:23,267 INFO L109 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.4.cil.c [2020-10-13 15:41:23,278 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:41:23,287 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:41:23,303 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:41:23,332 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:41:23,332 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:41:23,333 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:41:23,333 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:41:23,333 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:41:23,333 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:41:23,333 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:41:23,334 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:41:23,360 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states. [2020-10-13 15:41:23,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-13 15:41:23,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:23,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:41:23,375 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:23,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:23,382 INFO L82 PathProgramCache]: Analyzing trace with hash -546552828, now seen corresponding path program 1 times [2020-10-13 15:41:23,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:23,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718380612] [2020-10-13 15:41:23,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:23,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:23,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:23,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:24,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:24,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:24,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:24,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:24,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:25,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:25,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:26,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:26,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:27,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:28,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:28,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:28,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 15:41:28,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:41:28,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 15:41:28,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:28,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:28,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 15:41:28,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:28,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 15:41:28,896 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 15:41:28,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:28,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:28,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:28,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:28,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:28,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 15:41:28,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:28,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:28,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:28,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:28,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:28,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:41:28,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718380612] [2020-10-13 15:41:28,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:28,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 15:41:28,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920716058] [2020-10-13 15:41:28,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 15:41:28,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:28,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 15:41:28,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 15:41:28,977 INFO L87 Difference]: Start difference. First operand 304 states. Second operand 3 states. [2020-10-13 15:41:30,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:30,411 INFO L93 Difference]: Finished difference Result 631 states and 1123 transitions. [2020-10-13 15:41:30,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 15:41:30,413 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-10-13 15:41:30,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:30,433 INFO L225 Difference]: With dead ends: 631 [2020-10-13 15:41:30,433 INFO L226 Difference]: Without dead ends: 346 [2020-10-13 15:41:30,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 15:41:30,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-13 15:41:30,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 295. [2020-10-13 15:41:30,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-10-13 15:41:30,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 496 transitions. [2020-10-13 15:41:30,521 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 496 transitions. Word has length 39 [2020-10-13 15:41:30,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:30,522 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 496 transitions. [2020-10-13 15:41:30,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 15:41:30,522 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 496 transitions. [2020-10-13 15:41:30,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 15:41:30,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:30,526 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] [2020-10-13 15:41:30,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:41:30,527 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:30,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:30,527 INFO L82 PathProgramCache]: Analyzing trace with hash 878608717, now seen corresponding path program 1 times [2020-10-13 15:41:30,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:30,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030322589] [2020-10-13 15:41:30,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:30,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:30,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:30,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:30,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:30,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:31,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:31,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:31,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:31,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:31,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:31,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:31,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:32,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:32,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:35,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:35,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 15:41:35,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:41:35,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 15:41:35,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:35,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:41:35,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 15:41:35,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:41:35,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:41:35,793 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 15:41:35,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:35,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:35,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:35,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:35,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:35,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:41:35,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:35,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:35,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:35,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:35,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:35,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:41:35,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030322589] [2020-10-13 15:41:35,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:35,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:41:35,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222661968] [2020-10-13 15:41:35,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:41:35,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:35,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:41:35,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:41:35,825 INFO L87 Difference]: Start difference. First operand 295 states and 496 transitions. Second operand 4 states. [2020-10-13 15:41:36,128 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 15:41:37,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:37,993 INFO L93 Difference]: Finished difference Result 866 states and 1425 transitions. [2020-10-13 15:41:37,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:37,994 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-13 15:41:37,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:37,999 INFO L225 Difference]: With dead ends: 866 [2020-10-13 15:41:38,000 INFO L226 Difference]: Without dead ends: 597 [2020-10-13 15:41:38,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:38,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2020-10-13 15:41:38,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 530. [2020-10-13 15:41:38,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2020-10-13 15:41:38,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 868 transitions. [2020-10-13 15:41:38,071 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 868 transitions. Word has length 40 [2020-10-13 15:41:38,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:38,072 INFO L479 AbstractCegarLoop]: Abstraction has 530 states and 868 transitions. [2020-10-13 15:41:38,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:41:38,072 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 868 transitions. [2020-10-13 15:41:38,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 15:41:38,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:38,077 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] [2020-10-13 15:41:38,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:41:38,078 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:38,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:38,078 INFO L82 PathProgramCache]: Analyzing trace with hash -2088184551, now seen corresponding path program 1 times [2020-10-13 15:41:38,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:38,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35518751] [2020-10-13 15:41:38,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:38,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:38,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:38,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:38,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:38,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:38,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:38,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:39,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:39,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:39,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:39,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:40,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:40,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:40,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:43,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:43,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 15:41:43,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:41:43,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 15:41:43,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:43,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:41:43,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:41:43,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:41:43,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:43,296 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 15:41:43,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:43,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:43,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:43,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:43,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:43,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:41:43,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:43,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:43,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:43,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:43,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:43,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:41:43,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35518751] [2020-10-13 15:41:43,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:43,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:41:43,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575461111] [2020-10-13 15:41:43,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:41:43,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:43,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:41:43,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:41:43,318 INFO L87 Difference]: Start difference. First operand 530 states and 868 transitions. Second operand 4 states. [2020-10-13 15:41:43,445 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 15:41:45,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:45,124 INFO L93 Difference]: Finished difference Result 1326 states and 2154 transitions. [2020-10-13 15:41:45,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:45,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-13 15:41:45,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:45,131 INFO L225 Difference]: With dead ends: 1326 [2020-10-13 15:41:45,131 INFO L226 Difference]: Without dead ends: 807 [2020-10-13 15:41:45,134 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 [2020-10-13 15:41:45,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2020-10-13 15:41:45,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 716. [2020-10-13 15:41:45,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 716 states. [2020-10-13 15:41:45,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1117 transitions. [2020-10-13 15:41:45,206 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1117 transitions. Word has length 42 [2020-10-13 15:41:45,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:45,206 INFO L479 AbstractCegarLoop]: Abstraction has 716 states and 1117 transitions. [2020-10-13 15:41:45,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:41:45,207 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1117 transitions. [2020-10-13 15:41:45,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 15:41:45,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:45,209 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] [2020-10-13 15:41:45,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:41:45,210 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:45,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:45,210 INFO L82 PathProgramCache]: Analyzing trace with hash -93621791, now seen corresponding path program 1 times [2020-10-13 15:41:45,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:45,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125911341] [2020-10-13 15:41:45,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:45,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:45,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:45,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:45,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:45,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:47,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:47,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 15:41:47,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:41:47,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2196 [2020-10-13 15:41:47,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:47,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:41:47,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 15:41:47,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 15:41:47,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:47,588 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 15:41:47,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:47,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:47,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:47,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:47,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:47,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 15:41:47,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:47,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:47,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:47,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:47,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:41:47,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:41:47,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125911341] [2020-10-13 15:41:47,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:47,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:41:47,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622052240] [2020-10-13 15:41:47,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:41:47,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:47,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:41:47,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:41:47,618 INFO L87 Difference]: Start difference. First operand 716 states and 1117 transitions. Second operand 4 states. [2020-10-13 15:41:47,749 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 15:41:49,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:49,615 INFO L93 Difference]: Finished difference Result 2020 states and 3184 transitions. [2020-10-13 15:41:49,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:49,616 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-10-13 15:41:49,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:49,633 INFO L225 Difference]: With dead ends: 2020 [2020-10-13 15:41:49,633 INFO L226 Difference]: Without dead ends: 1324 [2020-10-13 15:41:49,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:49,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2020-10-13 15:41:49,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1190. [2020-10-13 15:41:49,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1190 states. [2020-10-13 15:41:49,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1888 transitions. [2020-10-13 15:41:49,737 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1888 transitions. Word has length 52 [2020-10-13 15:41:49,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:49,739 INFO L479 AbstractCegarLoop]: Abstraction has 1190 states and 1888 transitions. [2020-10-13 15:41:49,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:41:49,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1888 transitions. [2020-10-13 15:41:49,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 15:41:49,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:49,743 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] [2020-10-13 15:41:49,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:41:49,744 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:49,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:49,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1060798297, now seen corresponding path program 1 times [2020-10-13 15:41:49,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:49,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480279428] [2020-10-13 15:41:49,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:49,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:49,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:50,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:50,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 15:41:50,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:41:50,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1149 [2020-10-13 15:41:50,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:50,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 15:41:50,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:41:50,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 15:41:50,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:51,070 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 15:41:51,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:51,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:51,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:51,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:51,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:51,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:41:51,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:51,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:51,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:51,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:51,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:51,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:41:51,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480279428] [2020-10-13 15:41:51,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:51,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:41:51,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359671651] [2020-10-13 15:41:51,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:41:51,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:51,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:41:51,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:41:51,097 INFO L87 Difference]: Start difference. First operand 1190 states and 1888 transitions. Second operand 4 states. [2020-10-13 15:41:51,233 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 15:41:52,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:52,806 INFO L93 Difference]: Finished difference Result 3091 states and 4960 transitions. [2020-10-13 15:41:52,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:52,807 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-10-13 15:41:52,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:52,822 INFO L225 Difference]: With dead ends: 3091 [2020-10-13 15:41:52,822 INFO L226 Difference]: Without dead ends: 1932 [2020-10-13 15:41:52,830 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 [2020-10-13 15:41:52,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1932 states. [2020-10-13 15:41:52,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1932 to 1753. [2020-10-13 15:41:52,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1753 states. [2020-10-13 15:41:52,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 2808 transitions. [2020-10-13 15:41:52,993 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 2808 transitions. Word has length 53 [2020-10-13 15:41:52,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:52,995 INFO L479 AbstractCegarLoop]: Abstraction has 1753 states and 2808 transitions. [2020-10-13 15:41:52,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:41:52,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 2808 transitions. [2020-10-13 15:41:52,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 15:41:53,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:53,003 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:41:53,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:41:53,003 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:53,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:53,004 INFO L82 PathProgramCache]: Analyzing trace with hash -975871157, now seen corresponding path program 1 times [2020-10-13 15:41:53,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:53,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017139026] [2020-10-13 15:41:53,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:53,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:53,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:53,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:53,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:53,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:53,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:53,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:54,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:54,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:54,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:54,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:54,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:55,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:55,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:55,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:58,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:58,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 15:41:58,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 15:41:58,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 15:41:58,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:58,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:41:58,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:41:58,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:41:58,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:58,200 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 15:41:58,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:58,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:58,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:58,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:58,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:58,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:41:58,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:58,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:58,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:58,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:58,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:58,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 15:41:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:58,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:58,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:58,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:41:58,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:58,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:41:58,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:58,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:58,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 15:41:58,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:58,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:41:58,304 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 15:41:58,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017139026] [2020-10-13 15:41:58,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:58,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:58,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189784577] [2020-10-13 15:41:58,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:58,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:58,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:58,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:58,308 INFO L87 Difference]: Start difference. First operand 1753 states and 2808 transitions. Second operand 5 states. [2020-10-13 15:41:58,472 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 15:41:59,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:59,984 INFO L93 Difference]: Finished difference Result 3639 states and 5780 transitions. [2020-10-13 15:41:59,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:41:59,985 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-13 15:41:59,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:59,997 INFO L225 Difference]: With dead ends: 3639 [2020-10-13 15:41:59,998 INFO L226 Difference]: Without dead ends: 1906 [2020-10-13 15:42:00,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:42:00,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2020-10-13 15:42:00,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1742. [2020-10-13 15:42:00,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1742 states. [2020-10-13 15:42:00,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1742 states to 1742 states and 2791 transitions. [2020-10-13 15:42:00,163 INFO L78 Accepts]: Start accepts. Automaton has 1742 states and 2791 transitions. Word has length 63 [2020-10-13 15:42:00,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:00,163 INFO L479 AbstractCegarLoop]: Abstraction has 1742 states and 2791 transitions. [2020-10-13 15:42:00,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:42:00,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1742 states and 2791 transitions. [2020-10-13 15:42:00,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 15:42:00,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:00,166 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:42:00,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:42:00,167 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:00,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:00,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1932310729, now seen corresponding path program 1 times [2020-10-13 15:42:00,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:00,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126910695] [2020-10-13 15:42:00,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:00,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:00,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:00,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:00,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:00,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:00,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:00,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:00,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:00,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:01,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:01,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:01,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:04,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:04,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:05,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:05,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 15:42:05,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:42:05,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:42:05,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:05,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:42:05,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 15:42:05,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:42:05,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:05,335 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 15:42:05,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:05,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:05,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:05,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:05,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:05,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:42:05,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:05,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:05,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:05,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:05,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:05,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 15:42:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:05,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:05,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:05,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:42:05,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:05,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:42:05,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:05,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:42:05,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:05,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:42:05,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:05,445 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:42:05,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126910695] [2020-10-13 15:42:05,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:42:05,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:42:05,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601819326] [2020-10-13 15:42:05,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:42:05,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:05,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:42:05,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:42:05,448 INFO L87 Difference]: Start difference. First operand 1742 states and 2791 transitions. Second operand 5 states. [2020-10-13 15:42:05,802 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 15:42:06,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:06,943 INFO L93 Difference]: Finished difference Result 4000 states and 6535 transitions. [2020-10-13 15:42:06,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:42:06,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-13 15:42:06,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:06,958 INFO L225 Difference]: With dead ends: 4000 [2020-10-13 15:42:06,958 INFO L226 Difference]: Without dead ends: 2278 [2020-10-13 15:42:06,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:42:06,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2278 states. [2020-10-13 15:42:07,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2278 to 2086. [2020-10-13 15:42:07,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2086 states. [2020-10-13 15:42:07,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2086 states to 2086 states and 3416 transitions. [2020-10-13 15:42:07,128 INFO L78 Accepts]: Start accepts. Automaton has 2086 states and 3416 transitions. Word has length 63 [2020-10-13 15:42:07,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:07,129 INFO L479 AbstractCegarLoop]: Abstraction has 2086 states and 3416 transitions. [2020-10-13 15:42:07,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:42:07,129 INFO L276 IsEmpty]: Start isEmpty. Operand 2086 states and 3416 transitions. [2020-10-13 15:42:07,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 15:42:07,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:07,131 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] [2020-10-13 15:42:07,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:42:07,132 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:07,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:07,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1268368390, now seen corresponding path program 1 times [2020-10-13 15:42:07,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:07,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761025504] [2020-10-13 15:42:07,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:07,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:07,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:07,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:07,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:07,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:07,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:08,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:08,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 15:42:08,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:42:08,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1206 [2020-10-13 15:42:08,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:08,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:42:08,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-13 15:42:08,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:42:08,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:08,505 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 15:42:08,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:08,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:08,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:08,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:08,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:08,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:42:08,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:08,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:08,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:08,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:08,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:08,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:42:08,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761025504] [2020-10-13 15:42:08,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:42:08,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:42:08,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37983794] [2020-10-13 15:42:08,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:42:08,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:08,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:42:08,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:42:08,524 INFO L87 Difference]: Start difference. First operand 2086 states and 3416 transitions. Second operand 4 states. [2020-10-13 15:42:08,660 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 15:42:09,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:09,868 INFO L93 Difference]: Finished difference Result 4340 states and 7271 transitions. [2020-10-13 15:42:09,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:42:09,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-10-13 15:42:09,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:09,881 INFO L225 Difference]: With dead ends: 4340 [2020-10-13 15:42:09,881 INFO L226 Difference]: Without dead ends: 2274 [2020-10-13 15:42:09,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:42:09,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2020-10-13 15:42:10,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 2086. [2020-10-13 15:42:10,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2086 states. [2020-10-13 15:42:10,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2086 states to 2086 states and 3349 transitions. [2020-10-13 15:42:10,052 INFO L78 Accepts]: Start accepts. Automaton has 2086 states and 3349 transitions. Word has length 63 [2020-10-13 15:42:10,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:10,053 INFO L479 AbstractCegarLoop]: Abstraction has 2086 states and 3349 transitions. [2020-10-13 15:42:10,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:42:10,053 INFO L276 IsEmpty]: Start isEmpty. Operand 2086 states and 3349 transitions. [2020-10-13 15:42:10,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 15:42:10,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:10,055 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] [2020-10-13 15:42:10,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:42:10,056 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:10,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:10,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1023635325, now seen corresponding path program 1 times [2020-10-13 15:42:10,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:10,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189250540] [2020-10-13 15:42:10,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:10,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:10,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:10,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:10,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 15:42:10,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:42:10,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-10-13 15:42:10,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:10,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:42:10,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 15:42:10,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 15:42:10,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:10,724 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 15:42:10,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:10,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:10,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:10,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:10,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:10,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:42:10,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:10,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:10,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:10,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:10,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:10,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:42:10,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189250540] [2020-10-13 15:42:10,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:42:10,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:42:10,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465767042] [2020-10-13 15:42:10,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:42:10,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:10,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:42:10,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:42:10,750 INFO L87 Difference]: Start difference. First operand 2086 states and 3349 transitions. Second operand 4 states. [2020-10-13 15:42:11,006 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 15:42:12,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:12,469 INFO L93 Difference]: Finished difference Result 4011 states and 6595 transitions. [2020-10-13 15:42:12,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:42:12,469 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-10-13 15:42:12,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:12,496 INFO L225 Difference]: With dead ends: 4011 [2020-10-13 15:42:12,496 INFO L226 Difference]: Without dead ends: 4007 [2020-10-13 15:42:12,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:42:12,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4007 states. [2020-10-13 15:42:12,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4007 to 3613. [2020-10-13 15:42:12,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3613 states. [2020-10-13 15:42:12,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 6091 transitions. [2020-10-13 15:42:12,822 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 6091 transitions. Word has length 63 [2020-10-13 15:42:12,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:12,822 INFO L479 AbstractCegarLoop]: Abstraction has 3613 states and 6091 transitions. [2020-10-13 15:42:12,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:42:12,822 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 6091 transitions. [2020-10-13 15:42:12,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 15:42:12,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:12,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:42:12,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:42:12,828 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:12,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:12,828 INFO L82 PathProgramCache]: Analyzing trace with hash -214624784, now seen corresponding path program 1 times [2020-10-13 15:42:12,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:12,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603480751] [2020-10-13 15:42:12,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:12,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:12,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:13,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:14,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:14,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 15:42:14,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:42:14,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1191 [2020-10-13 15:42:14,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:14,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:42:14,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 15:42:14,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 15:42:14,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:14,186 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 15:42:14,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:14,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:14,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:14,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:14,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:14,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:42:14,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:14,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:14,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:14,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:14,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:14,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 15:42:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:14,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:14,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:14,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 15:42:14,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:14,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 15:42:14,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:14,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:42:14,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:14,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:42:14,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:14,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:42:14,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603480751] [2020-10-13 15:42:14,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:42:14,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 15:42:14,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004907522] [2020-10-13 15:42:14,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 15:42:14,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:14,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 15:42:14,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:42:14,350 INFO L87 Difference]: Start difference. First operand 3613 states and 6091 transitions. Second operand 8 states. [2020-10-13 15:42:14,612 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 15:42:15,265 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 15:42:17,234 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 15:42:18,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:18,461 INFO L93 Difference]: Finished difference Result 12033 states and 22290 transitions. [2020-10-13 15:42:18,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 15:42:18,461 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-10-13 15:42:18,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:18,543 INFO L225 Difference]: With dead ends: 12033 [2020-10-13 15:42:18,543 INFO L226 Difference]: Without dead ends: 8440 [2020-10-13 15:42:18,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-13 15:42:18,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8440 states. [2020-10-13 15:42:19,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8440 to 7519. [2020-10-13 15:42:19,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7519 states. [2020-10-13 15:42:19,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7519 states to 7519 states and 13771 transitions. [2020-10-13 15:42:19,453 INFO L78 Accepts]: Start accepts. Automaton has 7519 states and 13771 transitions. Word has length 78 [2020-10-13 15:42:19,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:19,455 INFO L479 AbstractCegarLoop]: Abstraction has 7519 states and 13771 transitions. [2020-10-13 15:42:19,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 15:42:19,455 INFO L276 IsEmpty]: Start isEmpty. Operand 7519 states and 13771 transitions. [2020-10-13 15:42:19,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 15:42:19,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:19,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:42:19,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:42:19,464 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:19,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:19,464 INFO L82 PathProgramCache]: Analyzing trace with hash -2049501845, now seen corresponding path program 1 times [2020-10-13 15:42:19,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:19,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778852879] [2020-10-13 15:42:19,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:19,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:19,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:20,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:20,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 15:42:20,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:42:20,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 802 [2020-10-13 15:42:20,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:20,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 15:42:20,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 15:42:20,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 15:42:20,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:20,527 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 15:42:20,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:20,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:20,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:20,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:20,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:20,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 15:42:20,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:20,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:20,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:20,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:20,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:20,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 15:42:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:20,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:20,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:20,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 15:42:20,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:20,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 15:42:20,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:20,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:42:20,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:20,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:42:20,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:20,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:42:20,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778852879] [2020-10-13 15:42:20,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:42:20,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 15:42:20,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745160089] [2020-10-13 15:42:20,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 15:42:20,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:20,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 15:42:20,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-13 15:42:20,695 INFO L87 Difference]: Start difference. First operand 7519 states and 13771 transitions. Second operand 10 states. [2020-10-13 15:42:20,849 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 15:42:21,081 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-13 15:42:21,268 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-13 15:42:22,143 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-13 15:42:22,318 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-13 15:42:23,627 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 15:42:23,862 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-13 15:42:24,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:24,554 INFO L93 Difference]: Finished difference Result 17005 states and 32480 transitions. [2020-10-13 15:42:24,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 15:42:24,554 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-10-13 15:42:24,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:24,592 INFO L225 Difference]: With dead ends: 17005 [2020-10-13 15:42:24,593 INFO L226 Difference]: Without dead ends: 9506 [2020-10-13 15:42:24,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2020-10-13 15:42:24,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9506 states. [2020-10-13 15:42:25,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9506 to 7965. [2020-10-13 15:42:25,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7965 states. [2020-10-13 15:42:25,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7965 states to 7965 states and 13957 transitions. [2020-10-13 15:42:25,472 INFO L78 Accepts]: Start accepts. Automaton has 7965 states and 13957 transitions. Word has length 79 [2020-10-13 15:42:25,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:25,472 INFO L479 AbstractCegarLoop]: Abstraction has 7965 states and 13957 transitions. [2020-10-13 15:42:25,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 15:42:25,473 INFO L276 IsEmpty]: Start isEmpty. Operand 7965 states and 13957 transitions. [2020-10-13 15:42:25,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 15:42:25,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:25,480 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-13 15:42:25,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:42:25,480 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:25,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:25,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1599468070, now seen corresponding path program 1 times [2020-10-13 15:42:25,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:25,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168232601] [2020-10-13 15:42:25,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:25,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:25,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:25,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:25,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:25,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:26,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:26,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:26,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:27,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:27,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:27,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:27,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:28,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:28,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:28,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:28,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:29,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:29,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:30,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:30,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:30,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 15:42:30,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 15:42:30,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:42:30,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:30,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:42:30,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 15:42:30,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:42:30,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:30,651 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 15:42:30,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:30,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:30,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:30,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:30,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:30,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:42:30,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:30,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:30,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:30,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:30,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:30,780 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 15:42:30,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 15:42:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:30,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:30,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:30,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 15:42:30,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:30,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:42:30,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:30,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:30,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:30,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:30,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:30,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:42:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:30,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:30,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:30,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:42:30,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:30,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:42:30,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:30,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:30,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:30,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:30,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:30,879 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-13 15:42:30,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168232601] [2020-10-13 15:42:30,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:42:30,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 15:42:30,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243094542] [2020-10-13 15:42:30,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:42:30,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:30,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:42:30,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:42:30,881 INFO L87 Difference]: Start difference. First operand 7965 states and 13957 transitions. Second operand 6 states. [2020-10-13 15:42:31,386 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 15:42:33,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:33,140 INFO L93 Difference]: Finished difference Result 18754 states and 35767 transitions. [2020-10-13 15:42:33,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:42:33,140 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2020-10-13 15:42:33,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:33,196 INFO L225 Difference]: With dead ends: 18754 [2020-10-13 15:42:33,196 INFO L226 Difference]: Without dead ends: 10850 [2020-10-13 15:42:33,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:42:33,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10850 states. [2020-10-13 15:42:34,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10850 to 10138. [2020-10-13 15:42:34,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10138 states. [2020-10-13 15:42:34,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10138 states to 10138 states and 17944 transitions. [2020-10-13 15:42:34,511 INFO L78 Accepts]: Start accepts. Automaton has 10138 states and 17944 transitions. Word has length 90 [2020-10-13 15:42:34,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:34,511 INFO L479 AbstractCegarLoop]: Abstraction has 10138 states and 17944 transitions. [2020-10-13 15:42:34,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:42:34,511 INFO L276 IsEmpty]: Start isEmpty. Operand 10138 states and 17944 transitions. [2020-10-13 15:42:34,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:42:34,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:34,522 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-13 15:42:34,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 15:42:34,522 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:34,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:34,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1575306202, now seen corresponding path program 1 times [2020-10-13 15:42:34,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:34,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705134192] [2020-10-13 15:42:34,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:34,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:34,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:34,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:34,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:34,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:34,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:35,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:36,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:36,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:39,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:39,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 15:42:39,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 15:42:39,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:42:39,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:39,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:42:39,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-13 15:42:39,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:42:39,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:39,698 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 15:42:39,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:39,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:39,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:39,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:39,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:39,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:42:39,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:39,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:39,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:39,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:39,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:39,824 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 15:42:39,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 15:42:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:39,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:39,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:39,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 15:42:39,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:39,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:42:39,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:39,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:39,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:39,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:39,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:39,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:42:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:39,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:39,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:39,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:42:39,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:39,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:42:39,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:39,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:39,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:39,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:39,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:39,932 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 15:42:39,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705134192] [2020-10-13 15:42:39,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:42:39,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 15:42:39,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310969044] [2020-10-13 15:42:39,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:42:39,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:39,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:42:39,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:42:39,934 INFO L87 Difference]: Start difference. First operand 10138 states and 17944 transitions. Second operand 6 states. [2020-10-13 15:42:40,329 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 15:42:43,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:43,133 INFO L93 Difference]: Finished difference Result 22204 states and 43669 transitions. [2020-10-13 15:42:43,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:42:43,134 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2020-10-13 15:42:43,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:43,192 INFO L225 Difference]: With dead ends: 22204 [2020-10-13 15:42:43,193 INFO L226 Difference]: Without dead ends: 12127 [2020-10-13 15:42:43,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:42:43,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12127 states. [2020-10-13 15:42:44,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12127 to 11341. [2020-10-13 15:42:44,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11341 states. [2020-10-13 15:42:44,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11341 states to 11341 states and 20722 transitions. [2020-10-13 15:42:44,704 INFO L78 Accepts]: Start accepts. Automaton has 11341 states and 20722 transitions. Word has length 94 [2020-10-13 15:42:44,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:44,705 INFO L479 AbstractCegarLoop]: Abstraction has 11341 states and 20722 transitions. [2020-10-13 15:42:44,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:42:44,705 INFO L276 IsEmpty]: Start isEmpty. Operand 11341 states and 20722 transitions. [2020-10-13 15:42:44,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 15:42:44,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:44,715 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:42:44,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 15:42:44,715 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:44,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:44,716 INFO L82 PathProgramCache]: Analyzing trace with hash 479683747, now seen corresponding path program 1 times [2020-10-13 15:42:44,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:44,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601445763] [2020-10-13 15:42:44,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:44,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:44,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:44,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:44,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:45,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:45,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:46,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:46,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:46,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:46,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:49,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:49,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 15:42:49,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 15:42:49,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 15:42:49,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:49,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:42:49,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 15:42:49,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 15:42:49,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:49,894 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 15:42:49,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:49,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:49,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:49,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:49,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:49,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:42:49,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:49,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:49,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:49,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:49,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:50,030 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 15:42:50,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 15:42:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:50,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:50,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:50,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:50,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 15:42:50,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:42:50,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 15:42:50,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:50,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:42:50,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:42:50,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 15:42:50,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:50,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:42:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:50,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:50,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:50,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:42:50,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:50,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 15:42:50,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:50,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:42:50,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:42:50,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:42:50,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:50,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 15:42:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:50,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:50,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:50,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 15:42:50,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:50,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:42:50,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:50,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:50,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 15:42:50,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:50,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:50,246 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 15:42:50,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601445763] [2020-10-13 15:42:50,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:42:50,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 15:42:50,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726336861] [2020-10-13 15:42:50,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 15:42:50,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:50,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 15:42:50,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:42:50,249 INFO L87 Difference]: Start difference. First operand 11341 states and 20722 transitions. Second operand 8 states. [2020-10-13 15:42:50,424 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 15:42:50,774 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 15:42:57,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:57,215 INFO L93 Difference]: Finished difference Result 43137 states and 85550 transitions. [2020-10-13 15:42:57,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 15:42:57,216 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2020-10-13 15:42:57,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:57,400 INFO L225 Difference]: With dead ends: 43137 [2020-10-13 15:42:57,401 INFO L226 Difference]: Without dead ends: 31820 [2020-10-13 15:42:57,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-13 15:42:57,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31820 states. [2020-10-13 15:43:00,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31820 to 27209. [2020-10-13 15:43:00,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27209 states. [2020-10-13 15:43:01,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27209 states to 27209 states and 51409 transitions. [2020-10-13 15:43:01,096 INFO L78 Accepts]: Start accepts. Automaton has 27209 states and 51409 transitions. Word has length 104 [2020-10-13 15:43:01,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:43:01,096 INFO L479 AbstractCegarLoop]: Abstraction has 27209 states and 51409 transitions. [2020-10-13 15:43:01,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 15:43:01,096 INFO L276 IsEmpty]: Start isEmpty. Operand 27209 states and 51409 transitions. [2020-10-13 15:43:01,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 15:43:01,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:43:01,113 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:43:01,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 15:43:01,113 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:43:01,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:43:01,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1831068965, now seen corresponding path program 1 times [2020-10-13 15:43:01,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:43:01,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634045586] [2020-10-13 15:43:01,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:43:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:01,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:01,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:01,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:01,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:01,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:01,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:01,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:04,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:05,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:05,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:06,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:06,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 15:43:06,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 15:43:06,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 15:43:06,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:06,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:43:06,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:43:06,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:43:06,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:06,267 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 15:43:06,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:43:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:06,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:06,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:06,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:43:06,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:06,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:43:06,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:06,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:43:06,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:43:06,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:43:06,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:06,391 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 15:43:06,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 15:43:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:06,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:06,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:06,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 15:43:06,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:06,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:43:06,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:06,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:43:06,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 15:43:06,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:43:06,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:06,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:43:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:06,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:06,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:06,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:43:06,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:06,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:43:06,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:06,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:43:06,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:43:06,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:43:06,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:06,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 15:43:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:06,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:06,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:06,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 15:43:06,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:06,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:43:06,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:06,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:43:06,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 15:43:06,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:43:06,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:06,515 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:43:06,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634045586] [2020-10-13 15:43:06,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:43:06,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:43:06,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528246433] [2020-10-13 15:43:06,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:43:06,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:43:06,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:43:06,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:43:06,518 INFO L87 Difference]: Start difference. First operand 27209 states and 51409 transitions. Second operand 6 states. [2020-10-13 15:43:06,659 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 15:43:10,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:43:10,907 INFO L93 Difference]: Finished difference Result 55583 states and 104126 transitions. [2020-10-13 15:43:10,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:43:10,908 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-13 15:43:10,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:43:11,025 INFO L225 Difference]: With dead ends: 55583 [2020-10-13 15:43:11,025 INFO L226 Difference]: Without dead ends: 28394 [2020-10-13 15:43:11,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:43:11,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28394 states. [2020-10-13 15:43:13,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28394 to 27172. [2020-10-13 15:43:13,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27172 states. [2020-10-13 15:43:14,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27172 states to 27172 states and 51235 transitions. [2020-10-13 15:43:14,215 INFO L78 Accepts]: Start accepts. Automaton has 27172 states and 51235 transitions. Word has length 104 [2020-10-13 15:43:14,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:43:14,216 INFO L479 AbstractCegarLoop]: Abstraction has 27172 states and 51235 transitions. [2020-10-13 15:43:14,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:43:14,216 INFO L276 IsEmpty]: Start isEmpty. Operand 27172 states and 51235 transitions. [2020-10-13 15:43:14,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 15:43:14,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:43:14,227 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:43:14,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 15:43:14,227 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:43:14,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:43:14,227 INFO L82 PathProgramCache]: Analyzing trace with hash 410573959, now seen corresponding path program 1 times [2020-10-13 15:43:14,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:43:14,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280583716] [2020-10-13 15:43:14,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:43:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:14,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:14,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:14,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:14,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:14,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:14,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:14,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:14,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:18,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:18,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:18,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:18,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:19,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:19,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:19,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:19,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 15:43:19,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:43:19,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 15:43:19,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:19,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:43:19,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-13 15:43:19,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:43:19,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:19,384 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 15:43:19,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:43:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:19,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:19,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:19,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:43:19,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:19,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:43:19,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:19,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:43:19,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:43:19,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:43:19,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:19,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 15:43:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:19,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:19,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:19,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:43:19,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:19,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:43:19,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:19,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:43:19,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:43:19,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:43:19,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:19,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 15:43:19,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:19,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:19,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:19,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 15:43:19,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:19,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:43:19,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:19,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:43:19,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 15:43:19,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:43:19,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:19,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 15:43:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:19,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:19,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:19,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 15:43:19,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:19,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:43:19,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:19,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:43:19,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 15:43:19,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:43:19,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:19,543 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 15:43:19,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280583716] [2020-10-13 15:43:19,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:43:19,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:43:19,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94566398] [2020-10-13 15:43:19,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:43:19,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:43:19,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:43:19,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:43:19,545 INFO L87 Difference]: Start difference. First operand 27172 states and 51235 transitions. Second operand 6 states. [2020-10-13 15:43:19,743 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 15:43:28,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:43:28,572 INFO L93 Difference]: Finished difference Result 77490 states and 187654 transitions. [2020-10-13 15:43:28,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 15:43:28,572 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2020-10-13 15:43:28,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:43:28,774 INFO L225 Difference]: With dead ends: 77490 [2020-10-13 15:43:28,774 INFO L226 Difference]: Without dead ends: 50342 [2020-10-13 15:43:29,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 15:43:29,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50342 states. [2020-10-13 15:43:38,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50342 to 48129. [2020-10-13 15:43:38,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48129 states. [2020-10-13 15:43:40,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48129 states to 48129 states and 107331 transitions. [2020-10-13 15:43:40,087 INFO L78 Accepts]: Start accepts. Automaton has 48129 states and 107331 transitions. Word has length 109 [2020-10-13 15:43:40,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:43:40,087 INFO L479 AbstractCegarLoop]: Abstraction has 48129 states and 107331 transitions. [2020-10-13 15:43:40,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:43:40,087 INFO L276 IsEmpty]: Start isEmpty. Operand 48129 states and 107331 transitions. [2020-10-13 15:43:40,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-13 15:43:40,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:43:40,108 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:43:40,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 15:43:40,109 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:43:40,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:43:40,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1676475304, now seen corresponding path program 1 times [2020-10-13 15:43:40,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:43:40,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546093062] [2020-10-13 15:43:40,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:43:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:40,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:40,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:40,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:40,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:40,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:40,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:40,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:40,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:41,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:41,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:45,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:45,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-13 15:43:45,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 15:43:45,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:43:45,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:45,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:43:45,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-13 15:43:45,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:43:45,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:45,276 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 15:43:45,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:43:45,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:45,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:45,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:45,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:43:45,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:45,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:43:45,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:45,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:43:45,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:43:45,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:43:45,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:45,405 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 15:43:45,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 15:43:45,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:45,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:45,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:45,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 15:43:45,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:45,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 15:43:45,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:45,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:43:45,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:43:45,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 15:43:45,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:45,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:43:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:45,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:45,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:45,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:43:45,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:45,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:43:45,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:45,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:43:45,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:43:45,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:43:45,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:45,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 15:43:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:45,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:45,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:45,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 15:43:45,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:45,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:43:45,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:45,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:43:45,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:43:45,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:43:45,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:45,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 15:43:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:45,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:45,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:45,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 15:43:45,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:45,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:43:45,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:45,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:43:45,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:43:45,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:43:45,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:45,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 15:43:45,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:45,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:45,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:45,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 15:43:45,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:45,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:43:45,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:45,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:43:45,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 15:43:45,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:43:45,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:45,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 15:43:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:45,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:45,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:45,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 15:43:45,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:45,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:43:45,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:45,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:43:45,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 15:43:45,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:43:45,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:45,643 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-13 15:43:45,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546093062] [2020-10-13 15:43:45,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:43:45,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 15:43:45,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715506433] [2020-10-13 15:43:45,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 15:43:45,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:43:45,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 15:43:45,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:43:45,645 INFO L87 Difference]: Start difference. First operand 48129 states and 107331 transitions. Second operand 7 states. [2020-10-13 15:43:45,852 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 15:43:56,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:43:56,379 INFO L93 Difference]: Finished difference Result 99765 states and 248981 transitions. [2020-10-13 15:43:56,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 15:43:56,380 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-10-13 15:43:56,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:43:56,633 INFO L225 Difference]: With dead ends: 99765 [2020-10-13 15:43:56,633 INFO L226 Difference]: Without dead ends: 51659 [2020-10-13 15:43:57,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-13 15:43:57,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51659 states. [2020-10-13 15:44:05,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51659 to 49473. [2020-10-13 15:44:05,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49473 states. [2020-10-13 15:44:06,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49473 states to 49473 states and 100582 transitions. [2020-10-13 15:44:06,101 INFO L78 Accepts]: Start accepts. Automaton has 49473 states and 100582 transitions. Word has length 151 [2020-10-13 15:44:06,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:44:06,102 INFO L479 AbstractCegarLoop]: Abstraction has 49473 states and 100582 transitions. [2020-10-13 15:44:06,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 15:44:06,102 INFO L276 IsEmpty]: Start isEmpty. Operand 49473 states and 100582 transitions. [2020-10-13 15:44:06,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-13 15:44:06,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:44:06,120 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:44:06,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 15:44:06,120 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:44:06,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:44:06,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1610702490, now seen corresponding path program 1 times [2020-10-13 15:44:06,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:44:06,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354118260] [2020-10-13 15:44:06,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:44:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:44:06,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:06,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:06,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:06,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:06,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:06,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:07,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:11,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:44:11,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 15:44:11,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:44:11,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:44:11,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:44:11,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:44:11,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-13 15:44:11,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:44:11,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:44:11,273 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 15:44:11,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:44:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:44:11,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:11,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:44:11,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:44:11,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:44:11,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:44:11,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:44:11,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:44:11,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:44:11,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:44:11,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:44:11,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 15:44:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:44:11,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:11,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:11,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:44:11,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 15:44:11,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:44:11,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 15:44:11,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:44:11,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:44:11,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:44:11,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 15:44:11,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:44:11,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:44:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:44:11,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:11,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:44:11,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:44:11,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:44:11,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:44:11,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:44:11,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:44:11,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:44:11,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:44:11,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:44:11,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 15:44:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:44:11,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:11,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:44:11,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 15:44:11,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:44:11,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:44:11,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:44:11,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:44:11,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:44:11,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:44:11,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:44:11,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 15:44:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:44:11,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:11,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:44:11,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 15:44:11,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:44:11,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:44:11,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:44:11,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:44:11,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 15:44:11,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:44:11,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:44:11,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 15:44:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:44:11,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:11,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:44:11,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 15:44:11,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:44:11,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:44:11,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:44:11,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:44:11,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 15:44:11,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:44:11,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:44:11,627 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 38 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-13 15:44:11,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354118260] [2020-10-13 15:44:11,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:44:11,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 15:44:11,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654007347] [2020-10-13 15:44:11,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 15:44:11,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:44:11,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 15:44:11,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:44:11,629 INFO L87 Difference]: Start difference. First operand 49473 states and 100582 transitions. Second operand 8 states. [2020-10-13 15:44:11,893 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 15:44:12,243 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 15:44:19,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:44:19,864 INFO L93 Difference]: Finished difference Result 97613 states and 216364 transitions. [2020-10-13 15:44:19,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 15:44:19,864 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 135 [2020-10-13 15:44:19,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:44:20,129 INFO L225 Difference]: With dead ends: 97613 [2020-10-13 15:44:20,129 INFO L226 Difference]: Without dead ends: 49224 [2020-10-13 15:44:20,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-13 15:44:20,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49224 states. [2020-10-13 15:44:29,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49224 to 44251. [2020-10-13 15:44:29,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44251 states. [2020-10-13 15:44:29,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44251 states to 44251 states and 85650 transitions. [2020-10-13 15:44:29,766 INFO L78 Accepts]: Start accepts. Automaton has 44251 states and 85650 transitions. Word has length 135 [2020-10-13 15:44:29,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:44:29,767 INFO L479 AbstractCegarLoop]: Abstraction has 44251 states and 85650 transitions. [2020-10-13 15:44:29,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 15:44:29,767 INFO L276 IsEmpty]: Start isEmpty. Operand 44251 states and 85650 transitions. [2020-10-13 15:44:29,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-13 15:44:29,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:44:29,778 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:44:29,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 15:44:29,779 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:44:29,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:44:29,779 INFO L82 PathProgramCache]: Analyzing trace with hash 154220357, now seen corresponding path program 1 times [2020-10-13 15:44:29,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:44:29,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082919717] [2020-10-13 15:44:29,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:44:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:44:29,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:29,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:29,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:29,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:29,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:30,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:30,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:34,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:44:34,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-13 15:44:34,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:44:34,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 15:44:34,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:44:34,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:44:34,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 15:44:34,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 15:44:34,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:44:34,945 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 15:44:34,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:44:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:44:34,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:34,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:44:34,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:44:34,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:44:34,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:44:34,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:44:34,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:44:34,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:44:34,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:44:34,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:44:35,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 15:44:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:44:35,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:35,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:44:35,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-13 15:44:35,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:44:35,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 15:44:35,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:44:35,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:44:35,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:44:35,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 15:44:35,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:44:35,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:44:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:44:35,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:35,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:44:35,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:44:35,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:44:35,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:44:35,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:44:35,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:44:35,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:44:35,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:44:35,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:44:35,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 15:44:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:44:35,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:35,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:44:35,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 15:44:35,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:44:35,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 15:44:35,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:44:35,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 15:44:35,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:44:35,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:44:35,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:44:35,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 15:44:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:44:35,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:35,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:44:35,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 15:44:35,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:44:35,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:44:35,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:44:35,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:44:35,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 15:44:35,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:44:35,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:44:35,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 15:44:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:44:35,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:35,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:44:35,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 15:44:35,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:44:35,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:44:35,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:44:35,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:44:35,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 15:44:35,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:44:35,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:44:35,347 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 31 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-13 15:44:35,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082919717] [2020-10-13 15:44:35,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:44:35,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 15:44:35,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274480433] [2020-10-13 15:44:35,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 15:44:35,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:44:35,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 15:44:35,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-13 15:44:35,348 INFO L87 Difference]: Start difference. First operand 44251 states and 85650 transitions. Second operand 10 states. [2020-10-13 15:44:35,481 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-13 15:44:38,222 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 15:44:45,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:44:45,928 INFO L93 Difference]: Finished difference Result 94111 states and 187075 transitions. [2020-10-13 15:44:45,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 15:44:45,929 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 151 [2020-10-13 15:44:45,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:44:46,255 INFO L225 Difference]: With dead ends: 94111 [2020-10-13 15:44:46,256 INFO L226 Difference]: Without dead ends: 51310 [2020-10-13 15:44:46,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-10-13 15:44:46,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51310 states. [2020-10-13 15:44:52,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51310 to 48070. [2020-10-13 15:44:52,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48070 states. [2020-10-13 15:44:53,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48070 states to 48070 states and 94451 transitions. [2020-10-13 15:44:53,164 INFO L78 Accepts]: Start accepts. Automaton has 48070 states and 94451 transitions. Word has length 151 [2020-10-13 15:44:53,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:44:53,164 INFO L479 AbstractCegarLoop]: Abstraction has 48070 states and 94451 transitions. [2020-10-13 15:44:53,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 15:44:53,164 INFO L276 IsEmpty]: Start isEmpty. Operand 48070 states and 94451 transitions. [2020-10-13 15:44:53,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 15:44:53,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:44:53,173 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:44:53,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 15:44:53,173 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:44:53,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:44:53,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1699053627, now seen corresponding path program 1 times [2020-10-13 15:44:53,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:44:53,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312052209] [2020-10-13 15:44:53,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:44:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:44:53,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:53,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:53,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:53,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:53,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking...