/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/heap-data/packet_filter.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:53:39,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:53:39,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:53:39,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:53:39,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:53:39,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:53:39,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:53:39,134 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:53:39,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:53:39,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:53:39,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:53:39,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:53:39,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:53:39,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:53:39,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:53:39,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:53:39,143 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:53:39,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:53:39,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:53:39,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:53:39,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:53:39,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:53:39,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:53:39,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:53:39,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:53:39,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:53:39,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:53:39,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:53:39,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:53:39,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:53:39,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:53:39,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:53:39,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:53:39,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:53:39,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:53:39,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:53:39,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:53:39,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:53:39,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:53:39,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:53:39,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:53:39,165 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 [2020-10-14 04:53:39,187 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:53:39,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:53:39,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:53:39,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:53:39,189 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:53:39,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:53:39,190 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:53:39,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:53:39,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:53:39,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:53:39,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:53:39,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:53:39,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:53:39,191 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:53:39,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:53:39,191 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:53:39,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:53:39,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:53:39,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:53:39,192 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:53:39,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:53:39,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:53:39,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:53:39,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:53:39,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:53:39,193 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:53:39,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:53:39,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:53:39,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:53:39,194 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:53:39,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:53:39,528 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:53:39,537 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:53:39,539 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:53:39,540 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:53:39,540 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/packet_filter.i [2020-10-14 04:53:39,612 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a287225c7/4b1acae27f6f4e28b4b3f9593ae39f21/FLAG01a41ebe2 [2020-10-14 04:53:40,093 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:53:40,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-data/packet_filter.i [2020-10-14 04:53:40,116 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a287225c7/4b1acae27f6f4e28b4b3f9593ae39f21/FLAG01a41ebe2 [2020-10-14 04:53:40,443 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a287225c7/4b1acae27f6f4e28b4b3f9593ae39f21 [2020-10-14 04:53:40,451 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:53:40,453 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:53:40,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:53:40,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:53:40,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:53:40,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:53:40" (1/1) ... [2020-10-14 04:53:40,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73cebe9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:53:40, skipping insertion in model container [2020-10-14 04:53:40,466 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:53:40" (1/1) ... [2020-10-14 04:53:40,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:53:40,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:53:41,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:53:41,067 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:53:41,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:53:41,184 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:53:41,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:53:41 WrapperNode [2020-10-14 04:53:41,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:53:41,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:53:41,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:53:41,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:53:41,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:53:41" (1/1) ... [2020-10-14 04:53:41,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:53:41" (1/1) ... [2020-10-14 04:53:41,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:53:41" (1/1) ... [2020-10-14 04:53:41,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:53:41" (1/1) ... [2020-10-14 04:53:41,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:53:41" (1/1) ... [2020-10-14 04:53:41,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:53:41" (1/1) ... [2020-10-14 04:53:41,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:53:41" (1/1) ... [2020-10-14 04:53:41,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:53:41,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:53:41,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:53:41,292 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:53:41,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:53:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:53:41,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:53:41,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:53:41,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 04:53:41,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 04:53:41,350 INFO L138 BoogieDeclarations]: Found implementation of procedure receive [2020-10-14 04:53:41,350 INFO L138 BoogieDeclarations]: Found implementation of procedure send [2020-10-14 04:53:41,350 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_queue [2020-10-14 04:53:41,350 INFO L138 BoogieDeclarations]: Found implementation of procedure process_prio_queue [2020-10-14 04:53:41,350 INFO L138 BoogieDeclarations]: Found implementation of procedure process_normal_queue [2020-10-14 04:53:41,351 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:53:41,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-14 04:53:41,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:53:41,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_charp [2020-10-14 04:53:41,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:53:41,351 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 04:53:41,352 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 04:53:41,352 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 04:53:41,352 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 04:53:41,352 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 04:53:41,352 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 04:53:41,352 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 04:53:41,353 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 04:53:41,353 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 04:53:41,353 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 04:53:41,354 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 04:53:41,354 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 04:53:41,354 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 04:53:41,354 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 04:53:41,355 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 04:53:41,355 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 04:53:41,355 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 04:53:41,355 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 04:53:41,355 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 04:53:41,355 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 04:53:41,355 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 04:53:41,356 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 04:53:41,356 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 04:53:41,356 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 04:53:41,356 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 04:53:41,356 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 04:53:41,357 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 04:53:41,357 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 04:53:41,357 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 04:53:41,357 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 04:53:41,357 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 04:53:41,357 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 04:53:41,357 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 04:53:41,358 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 04:53:41,358 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 04:53:41,358 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 04:53:41,358 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 04:53:41,358 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 04:53:41,358 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 04:53:41,358 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 04:53:41,359 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 04:53:41,359 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 04:53:41,359 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 04:53:41,359 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 04:53:41,359 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 04:53:41,359 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 04:53:41,360 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 04:53:41,360 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 04:53:41,360 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 04:53:41,360 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 04:53:41,360 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 04:53:41,360 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 04:53:41,360 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 04:53:41,360 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 04:53:41,361 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 04:53:41,361 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 04:53:41,361 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 04:53:41,361 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 04:53:41,361 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 04:53:41,361 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 04:53:41,361 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 04:53:41,362 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 04:53:41,362 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 04:53:41,362 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 04:53:41,362 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 04:53:41,362 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:53:41,362 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 04:53:41,362 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 04:53:41,362 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 04:53:41,363 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 04:53:41,363 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 04:53:41,363 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 04:53:41,363 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 04:53:41,363 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 04:53:41,363 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 04:53:41,363 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 04:53:41,363 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 04:53:41,363 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 04:53:41,363 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 04:53:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 04:53:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 04:53:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 04:53:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 04:53:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 04:53:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 04:53:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 04:53:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 04:53:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 04:53:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 04:53:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 04:53:41,365 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 04:53:41,365 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 04:53:41,365 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 04:53:41,365 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 04:53:41,365 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 04:53:41,365 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 04:53:41,365 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 04:53:41,365 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 04:53:41,365 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 04:53:41,365 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 04:53:41,366 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 04:53:41,366 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 04:53:41,366 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 04:53:41,366 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 04:53:41,366 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 04:53:41,366 INFO L130 BoogieDeclarations]: Found specification of procedure receive [2020-10-14 04:53:41,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 04:53:41,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:53:41,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 04:53:41,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:53:41,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 04:53:41,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:53:41,367 INFO L130 BoogieDeclarations]: Found specification of procedure send [2020-10-14 04:53:41,368 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_queue [2020-10-14 04:53:41,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 04:53:41,368 INFO L130 BoogieDeclarations]: Found specification of procedure process_prio_queue [2020-10-14 04:53:41,368 INFO L130 BoogieDeclarations]: Found specification of procedure process_normal_queue [2020-10-14 04:53:41,368 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:53:41,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-14 04:53:41,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-14 04:53:41,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:53:41,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:53:42,085 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:53:42,086 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 04:53:42,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:53:42 BoogieIcfgContainer [2020-10-14 04:53:42,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:53:42,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:53:42,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:53:42,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:53:42,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:53:40" (1/3) ... [2020-10-14 04:53:42,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8abeb5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:53:42, skipping insertion in model container [2020-10-14 04:53:42,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:53:41" (2/3) ... [2020-10-14 04:53:42,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8abeb5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:53:42, skipping insertion in model container [2020-10-14 04:53:42,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:53:42" (3/3) ... [2020-10-14 04:53:42,100 INFO L109 eAbstractionObserver]: Analyzing ICFG packet_filter.i [2020-10-14 04:53:42,111 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:53:42,119 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-14 04:53:42,134 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-14 04:53:42,159 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:53:42,159 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:53:42,160 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:53:42,160 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:53:42,160 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:53:42,160 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:53:42,161 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:53:42,161 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:53:42,182 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-10-14 04:53:42,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 04:53:42,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:42,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:53:42,190 INFO L427 AbstractCegarLoop]: === Iteration 1 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:42,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:42,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1068933411, now seen corresponding path program 1 times [2020-10-14 04:53:42,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:42,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045683328] [2020-10-14 04:53:42,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:42,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:42,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:42,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:42,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:42,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 04:53:42,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:53:42,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-10-14 04:53:42,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:42,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:42,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:42,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 04:53:42,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:42,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:53:42,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:42,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:42,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:42,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:42,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:42,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:53:42,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:42,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:42,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:53:42,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:53:42,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045683328] [2020-10-14 04:53:42,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:53:42,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:53:42,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114033252] [2020-10-14 04:53:42,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 04:53:42,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:42,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 04:53:42,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 04:53:42,888 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 3 states. [2020-10-14 04:53:43,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:43,102 INFO L93 Difference]: Finished difference Result 100 states and 126 transitions. [2020-10-14 04:53:43,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 04:53:43,104 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-14 04:53:43,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:43,121 INFO L225 Difference]: With dead ends: 100 [2020-10-14 04:53:43,121 INFO L226 Difference]: Without dead ends: 57 [2020-10-14 04:53:43,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 04:53:43,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-14 04:53:43,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-14 04:53:43,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 04:53:43,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2020-10-14 04:53:43,209 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 14 [2020-10-14 04:53:43,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:43,209 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2020-10-14 04:53:43,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 04:53:43,210 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2020-10-14 04:53:43,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 04:53:43,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:43,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:53:43,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:53:43,212 INFO L427 AbstractCegarLoop]: === Iteration 2 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:43,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:43,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1316192133, now seen corresponding path program 1 times [2020-10-14 04:53:43,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:43,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789417990] [2020-10-14 04:53:43,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:43,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:43,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:43,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:43,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 04:53:43,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:53:43,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-14 04:53:43,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:43,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:43,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:53:43,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 04:53:43,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:53:43,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:53:43,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:43,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:43,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:43,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:43,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:43,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:53:43,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:43,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:43,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:43,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:43,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:43,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:53:43,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:53:43,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789417990] [2020-10-14 04:53:43,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:53:43,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:53:43,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479083382] [2020-10-14 04:53:43,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:53:43,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:43,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:53:43,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:53:43,534 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand 4 states. [2020-10-14 04:53:43,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:43,744 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2020-10-14 04:53:43,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:53:43,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-14 04:53:43,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:43,747 INFO L225 Difference]: With dead ends: 60 [2020-10-14 04:53:43,747 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 04:53:43,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:53:43,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 04:53:43,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-10-14 04:53:43,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-14 04:53:43,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2020-10-14 04:53:43,760 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 15 [2020-10-14 04:53:43,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:43,761 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2020-10-14 04:53:43,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:53:43,761 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-10-14 04:53:43,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 04:53:43,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:43,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:53:43,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:53:43,763 INFO L427 AbstractCegarLoop]: === Iteration 3 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:43,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:43,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1316190211, now seen corresponding path program 1 times [2020-10-14 04:53:43,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:43,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849072581] [2020-10-14 04:53:43,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:43,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:43,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:43,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 04:53:43,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:43,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 04:53:43,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:43,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:43,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:53:43,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:43,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:53:43,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:53:43,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:43,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:43,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:43,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:43,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:43,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:53:43,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:43,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:43,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:43,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:43,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:43,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:53:43,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:53:43,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849072581] [2020-10-14 04:53:43,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:53:43,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 04:53:43,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142208705] [2020-10-14 04:53:43,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:53:43,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:43,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:53:43,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:53:43,971 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 7 states. [2020-10-14 04:53:44,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:44,429 INFO L93 Difference]: Finished difference Result 95 states and 113 transitions. [2020-10-14 04:53:44,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:53:44,429 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-14 04:53:44,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:44,433 INFO L225 Difference]: With dead ends: 95 [2020-10-14 04:53:44,433 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 04:53:44,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:53:44,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 04:53:44,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2020-10-14 04:53:44,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-14 04:53:44,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2020-10-14 04:53:44,448 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 15 [2020-10-14 04:53:44,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:44,449 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2020-10-14 04:53:44,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:53:44,449 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2020-10-14 04:53:44,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 04:53:44,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:44,450 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] [2020-10-14 04:53:44,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:53:44,451 INFO L427 AbstractCegarLoop]: === Iteration 4 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:44,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:44,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1729106577, now seen corresponding path program 1 times [2020-10-14 04:53:44,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:44,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142954629] [2020-10-14 04:53:44,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:44,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:44,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:44,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:44,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 04:53:44,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:44,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 04:53:44,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:44,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:44,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:53:44,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:44,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 04:53:44,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:44,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:44,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:44,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:44,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:44,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:44,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:53:44,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:44,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:44,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:44,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:44,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:44,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:44,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 04:53:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:44,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:44,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:44,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:53:44,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:44,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 04:53:44,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:44,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:44,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:53:44,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:53:44,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:53:44,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:44,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:53:44,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142954629] [2020-10-14 04:53:44,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:53:44,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 04:53:44,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955768937] [2020-10-14 04:53:44,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:53:44,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:44,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:53:44,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:53:44,738 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand 9 states. [2020-10-14 04:53:45,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:45,400 INFO L93 Difference]: Finished difference Result 100 states and 119 transitions. [2020-10-14 04:53:45,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:53:45,400 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-14 04:53:45,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:45,402 INFO L225 Difference]: With dead ends: 100 [2020-10-14 04:53:45,402 INFO L226 Difference]: Without dead ends: 78 [2020-10-14 04:53:45,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:53:45,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-14 04:53:45,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 60. [2020-10-14 04:53:45,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-14 04:53:45,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2020-10-14 04:53:45,413 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 21 [2020-10-14 04:53:45,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:45,414 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2020-10-14 04:53:45,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:53:45,414 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2020-10-14 04:53:45,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 04:53:45,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:45,415 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:53:45,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:53:45,416 INFO L427 AbstractCegarLoop]: === Iteration 5 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:45,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:45,416 INFO L82 PathProgramCache]: Analyzing trace with hash 453892566, now seen corresponding path program 1 times [2020-10-14 04:53:45,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:45,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622596163] [2020-10-14 04:53:45,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:45,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:45,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:45,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 04:53:45,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:45,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-14 04:53:45,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:45,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:45,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:53:45,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:45,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 04:53:45,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:45,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:45,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:45,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:45,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:45,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:45,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:53:45,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:45,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:45,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:45,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:45,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:45,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:45,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:53:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:45,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:45,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:45,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:53:45,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:45,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 04:53:45,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:45,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:45,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:53:45,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:53:45,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 04:53:46,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:53:46,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:53:46,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622596163] [2020-10-14 04:53:46,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:53:46,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 04:53:46,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940188494] [2020-10-14 04:53:46,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 04:53:46,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:46,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 04:53:46,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:53:46,226 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand 11 states. [2020-10-14 04:53:46,503 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-14 04:53:48,000 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-14 04:53:48,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:48,624 INFO L93 Difference]: Finished difference Result 145 states and 180 transitions. [2020-10-14 04:53:48,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:53:48,626 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2020-10-14 04:53:48,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:48,628 INFO L225 Difference]: With dead ends: 145 [2020-10-14 04:53:48,628 INFO L226 Difference]: Without dead ends: 118 [2020-10-14 04:53:48,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:53:48,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-14 04:53:48,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 72. [2020-10-14 04:53:48,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-14 04:53:48,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2020-10-14 04:53:48,642 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 26 [2020-10-14 04:53:48,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:48,643 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2020-10-14 04:53:48,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 04:53:48,643 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2020-10-14 04:53:48,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 04:53:48,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:48,645 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:53:48,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:53:48,645 INFO L427 AbstractCegarLoop]: === Iteration 6 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:48,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:48,646 INFO L82 PathProgramCache]: Analyzing trace with hash -845629304, now seen corresponding path program 1 times [2020-10-14 04:53:48,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:48,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569160555] [2020-10-14 04:53:48,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:48,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:49,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:49,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 04:53:49,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:49,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-14 04:53:49,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:49,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:49,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:53:49,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:49,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 04:53:49,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:53:49,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:49,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:49,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:49,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:49,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:49,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:53:49,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:49,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:49,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:49,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:49,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:49,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:53:49,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:53:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:49,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:49,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:49,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:53:49,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:49,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 04:53:49,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:49,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:49,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:53:49,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:53:49,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 04:53:49,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:53:49,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 04:53:49,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:49,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:49,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:49,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:53:49,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:49,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 04:53:49,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:49,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:49,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:53:49,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:53:49,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:53:49,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:49,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:53:49,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569160555] [2020-10-14 04:53:49,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:53:49,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:53:49,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55642060] [2020-10-14 04:53:49,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:53:49,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:49,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:53:49,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:53:49,482 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand 12 states. [2020-10-14 04:53:51,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:51,262 INFO L93 Difference]: Finished difference Result 132 states and 163 transitions. [2020-10-14 04:53:51,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:53:51,262 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-10-14 04:53:51,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:51,265 INFO L225 Difference]: With dead ends: 132 [2020-10-14 04:53:51,265 INFO L226 Difference]: Without dead ends: 110 [2020-10-14 04:53:51,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:53:51,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-14 04:53:51,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 66. [2020-10-14 04:53:51,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-14 04:53:51,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2020-10-14 04:53:51,279 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 32 [2020-10-14 04:53:51,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:51,279 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2020-10-14 04:53:51,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:53:51,280 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2020-10-14 04:53:51,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 04:53:51,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:51,281 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:53:51,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:53:51,282 INFO L427 AbstractCegarLoop]: === Iteration 7 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:51,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:51,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1958551269, now seen corresponding path program 1 times [2020-10-14 04:53:51,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:51,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771278660] [2020-10-14 04:53:51,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:51,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:51,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:53,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:53,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 04:53:53,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:53:53,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2208 [2020-10-14 04:53:53,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:53,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:53,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:53:53,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 04:53:53,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:53:53,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:53,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:53,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:53,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:53,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:53,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:53,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:53:53,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:53,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:53,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:53,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:53,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:53,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:53,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:53:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:53,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:53,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:53,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:53:53,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:53,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 04:53:53,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:53,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:53,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:53:53,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:53,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:53:53,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:53,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 04:53:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:53,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:53,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:53,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:53,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:53,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 04:53:53,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:53,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:53,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:53,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:53:53,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:53,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:53,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:53:53,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771278660] [2020-10-14 04:53:53,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:53:53,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 04:53:53,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098619265] [2020-10-14 04:53:53,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:53:53,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:53,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:53:53,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:53:53,704 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand 9 states. [2020-10-14 04:53:54,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:54,257 INFO L93 Difference]: Finished difference Result 148 states and 184 transitions. [2020-10-14 04:53:54,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:53:54,258 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-14 04:53:54,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:54,259 INFO L225 Difference]: With dead ends: 148 [2020-10-14 04:53:54,260 INFO L226 Difference]: Without dead ends: 96 [2020-10-14 04:53:54,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:53:54,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-14 04:53:54,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 74. [2020-10-14 04:53:54,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-14 04:53:54,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 90 transitions. [2020-10-14 04:53:54,273 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 90 transitions. Word has length 32 [2020-10-14 04:53:54,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:54,273 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 90 transitions. [2020-10-14 04:53:54,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:53:54,274 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 90 transitions. [2020-10-14 04:53:54,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 04:53:54,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:54,275 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:53:54,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:53:54,276 INFO L427 AbstractCegarLoop]: === Iteration 8 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:54,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:54,276 INFO L82 PathProgramCache]: Analyzing trace with hash -2117561309, now seen corresponding path program 1 times [2020-10-14 04:53:54,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:54,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284269377] [2020-10-14 04:53:54,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:54,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:54,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:56,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:56,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 04:53:56,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:53:56,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1709 [2020-10-14 04:53:56,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:56,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:56,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:53:56,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:56,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 04:53:56,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:53:56,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:56,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:56,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:56,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:56,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:56,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:53:56,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:56,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:56,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:56,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:56,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:56,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:53:56,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:53:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:56,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:56,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:56,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:53:56,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:56,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 04:53:56,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:56,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:56,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:53:56,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:56,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:53:56,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:53:56,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 04:53:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:56,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:56,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:56,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:56,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:56,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 04:53:56,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:56,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:56,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:53:56,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:56,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:53:56,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:53:56,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:53:56,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284269377] [2020-10-14 04:53:56,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:53:56,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:53:56,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587388742] [2020-10-14 04:53:56,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:53:56,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:56,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:53:56,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:53:56,424 INFO L87 Difference]: Start difference. First operand 74 states and 90 transitions. Second operand 16 states. [2020-10-14 04:53:57,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:57,737 INFO L93 Difference]: Finished difference Result 139 states and 174 transitions. [2020-10-14 04:53:57,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:53:57,738 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 32 [2020-10-14 04:53:57,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:57,739 INFO L225 Difference]: With dead ends: 139 [2020-10-14 04:53:57,739 INFO L226 Difference]: Without dead ends: 112 [2020-10-14 04:53:57,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2020-10-14 04:53:57,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-14 04:53:57,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 87. [2020-10-14 04:53:57,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-14 04:53:57,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 107 transitions. [2020-10-14 04:53:57,761 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 107 transitions. Word has length 32 [2020-10-14 04:53:57,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:57,761 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 107 transitions. [2020-10-14 04:53:57,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:53:57,762 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 107 transitions. [2020-10-14 04:53:57,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 04:53:57,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:57,763 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:53:57,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:53:57,764 INFO L427 AbstractCegarLoop]: === Iteration 9 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:57,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:57,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1188712300, now seen corresponding path program 1 times [2020-10-14 04:53:57,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:57,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239606790] [2020-10-14 04:53:57,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:57,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:58,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:58,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 04:53:58,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:58,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-10-14 04:53:58,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:58,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:58,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:53:58,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:58,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 04:53:58,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:58,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:58,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:58,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:58,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:58,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:58,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:53:58,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:58,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:58,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:58,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:58,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:58,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:53:58,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:53:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:58,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:58,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:58,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:53:58,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:58,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 04:53:58,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:58,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:58,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:53:58,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:58,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:53:58,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:53:58,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 04:53:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:58,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:58,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:58,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:58,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:58,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 04:53:58,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:58,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:53:58,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:58,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:53:58,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:53:58,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:53:58,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239606790] [2020-10-14 04:53:58,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:53:58,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:53:58,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431360076] [2020-10-14 04:53:58,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:53:58,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:58,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:53:58,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:53:58,639 INFO L87 Difference]: Start difference. First operand 87 states and 107 transitions. Second operand 13 states. [2020-10-14 04:53:59,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:59,888 INFO L93 Difference]: Finished difference Result 120 states and 151 transitions. [2020-10-14 04:53:59,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 04:53:59,889 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2020-10-14 04:53:59,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:59,891 INFO L225 Difference]: With dead ends: 120 [2020-10-14 04:53:59,891 INFO L226 Difference]: Without dead ends: 118 [2020-10-14 04:53:59,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:53:59,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-14 04:53:59,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 97. [2020-10-14 04:53:59,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 04:53:59,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 121 transitions. [2020-10-14 04:53:59,906 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 121 transitions. Word has length 33 [2020-10-14 04:53:59,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:59,907 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 121 transitions. [2020-10-14 04:53:59,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:53:59,907 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 121 transitions. [2020-10-14 04:53:59,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 04:53:59,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:59,909 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:53:59,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:53:59,909 INFO L427 AbstractCegarLoop]: === Iteration 10 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:59,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:59,910 INFO L82 PathProgramCache]: Analyzing trace with hash -472993492, now seen corresponding path program 1 times [2020-10-14 04:53:59,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:59,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931208392] [2020-10-14 04:53:59,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:59,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:00,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:00,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 04:54:00,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:00,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-10-14 04:54:00,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:00,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:00,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 04:54:00,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:00,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 04:54:00,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:00,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:00,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:00,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:00,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:00,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:00,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:54:00,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:00,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:00,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:00,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:00,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:00,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:00,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:54:00,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:00,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:00,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:00,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:54:00,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:00,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 04:54:00,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:00,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:00,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:54:00,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:54:00,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 04:54:00,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:01,078 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2020-10-14 04:54:01,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 04:54:01,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:01,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:01,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:01,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:01,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:01,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 04:54:01,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:01,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:01,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:54:01,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:54:01,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:54:01,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:12,978 WARN L193 SmtUtils]: Spent 10.31 s on a formula simplification that was a NOOP. DAG size: 152 [2020-10-14 04:54:13,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:13,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931208392] [2020-10-14 04:54:13,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:13,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:54:13,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492024756] [2020-10-14 04:54:13,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:54:13,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:13,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:54:13,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:54:13,010 INFO L87 Difference]: Start difference. First operand 97 states and 121 transitions. Second operand 13 states. [2020-10-14 04:54:26,520 WARN L193 SmtUtils]: Spent 12.89 s on a formula simplification that was a NOOP. DAG size: 168 [2020-10-14 04:54:28,534 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-14 04:54:45,311 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-14 04:55:02,553 WARN L193 SmtUtils]: Spent 15.66 s on a formula simplification that was a NOOP. DAG size: 160 [2020-10-14 04:55:26,830 WARN L193 SmtUtils]: Spent 23.17 s on a formula simplification that was a NOOP. DAG size: 165 [2020-10-14 04:56:04,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:04,033 INFO L93 Difference]: Finished difference Result 199 states and 254 transitions. [2020-10-14 04:56:04,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 04:56:04,039 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2020-10-14 04:56:04,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:04,042 INFO L225 Difference]: With dead ends: 199 [2020-10-14 04:56:04,042 INFO L226 Difference]: Without dead ends: 172 [2020-10-14 04:56:04,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 66.2s TimeCoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2020-10-14 04:56:04,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-14 04:56:04,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 111. [2020-10-14 04:56:04,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-14 04:56:04,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 139 transitions. [2020-10-14 04:56:04,063 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 139 transitions. Word has length 33 [2020-10-14 04:56:04,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:04,063 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 139 transitions. [2020-10-14 04:56:04,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:56:04,064 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 139 transitions. [2020-10-14 04:56:04,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 04:56:04,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:04,066 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:04,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:56:04,066 INFO L427 AbstractCegarLoop]: === Iteration 11 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:04,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:04,067 INFO L82 PathProgramCache]: Analyzing trace with hash 567613021, now seen corresponding path program 2 times [2020-10-14 04:56:04,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:04,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311163152] [2020-10-14 04:56:04,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:04,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:04,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:04,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 04:56:04,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:04,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 595 [2020-10-14 04:56:04,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:04,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:04,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 04:56:04,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:04,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 04:56:04,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:05,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:05,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:05,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:05,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:05,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:05,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:56:05,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:05,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:05,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:05,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:05,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:05,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:05,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:56:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:05,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:05,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:05,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:56:05,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:05,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 04:56:05,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:05,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:05,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:56:05,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:05,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 04:56:05,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:06,261 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2020-10-14 04:56:06,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 04:56:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:06,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:06,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:06,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:56:06,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:06,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 04:56:06,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:06,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:06,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:56:06,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:06,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 04:56:06,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:07,027 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-10-14 04:56:07,042 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:56:07,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311163152] [2020-10-14 04:56:07,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:07,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:56:07,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953750740] [2020-10-14 04:56:07,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:56:07,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:07,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:56:07,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:56:07,045 INFO L87 Difference]: Start difference. First operand 111 states and 139 transitions. Second operand 16 states. [2020-10-14 04:56:07,727 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-14 04:56:08,225 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-14 04:56:08,794 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-14 04:56:11,989 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-14 04:56:14,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:14,910 INFO L93 Difference]: Finished difference Result 195 states and 249 transitions. [2020-10-14 04:56:14,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 04:56:14,918 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 37 [2020-10-14 04:56:14,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:14,921 INFO L225 Difference]: With dead ends: 195 [2020-10-14 04:56:14,922 INFO L226 Difference]: Without dead ends: 168 [2020-10-14 04:56:14,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2020-10-14 04:56:14,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-14 04:56:14,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 119. [2020-10-14 04:56:14,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-14 04:56:14,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 152 transitions. [2020-10-14 04:56:14,940 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 152 transitions. Word has length 37 [2020-10-14 04:56:14,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:14,941 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 152 transitions. [2020-10-14 04:56:14,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:56:14,941 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 152 transitions. [2020-10-14 04:56:14,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 04:56:14,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:14,943 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:56:14,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:56:14,943 INFO L427 AbstractCegarLoop]: === Iteration 12 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:14,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:14,943 INFO L82 PathProgramCache]: Analyzing trace with hash -249576171, now seen corresponding path program 1 times [2020-10-14 04:56:14,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:14,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971730938] [2020-10-14 04:56:14,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:14,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:15,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:16,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:16,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 04:56:16,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:56:16,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1488 [2020-10-14 04:56:16,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:16,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:16,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:56:16,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 04:56:16,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 04:56:16,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:16,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:16,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:16,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:16,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:16,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:16,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:56:16,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:16,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:16,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:16,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:16,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:16,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:16,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:56:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:16,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:16,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:16,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:56:16,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:16,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:56:16,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:16,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:16,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:16,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:16,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:16,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:16,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 04:56:16,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:16,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:16,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:16,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:16,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:16,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 04:56:16,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:16,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:16,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:56:16,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:16,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:56:16,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:16,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 04:56:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:16,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:16,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:16,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:56:16,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:16,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 04:56:16,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:16,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:16,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:56:16,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 04:56:16,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:56:16,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:16,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:56:16,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971730938] [2020-10-14 04:56:16,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:56:16,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 04:56:16,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562508902] [2020-10-14 04:56:16,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:56:16,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:16,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:56:16,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:56:16,827 INFO L87 Difference]: Start difference. First operand 119 states and 152 transitions. Second operand 9 states. [2020-10-14 04:56:18,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:18,503 INFO L93 Difference]: Finished difference Result 152 states and 192 transitions. [2020-10-14 04:56:18,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:56:18,508 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-14 04:56:18,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:18,511 INFO L225 Difference]: With dead ends: 152 [2020-10-14 04:56:18,511 INFO L226 Difference]: Without dead ends: 133 [2020-10-14 04:56:18,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:56:18,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-14 04:56:18,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 115. [2020-10-14 04:56:18,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-14 04:56:18,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 146 transitions. [2020-10-14 04:56:18,532 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 146 transitions. Word has length 38 [2020-10-14 04:56:18,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:18,533 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 146 transitions. [2020-10-14 04:56:18,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:56:18,533 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 146 transitions. [2020-10-14 04:56:18,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 04:56:18,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:18,534 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:56:18,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:56:18,534 INFO L427 AbstractCegarLoop]: === Iteration 13 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:18,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:18,535 INFO L82 PathProgramCache]: Analyzing trace with hash 661927774, now seen corresponding path program 1 times [2020-10-14 04:56:18,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:18,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69397869] [2020-10-14 04:56:18,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:18,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:19,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:19,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 04:56:19,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:19,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 686 [2020-10-14 04:56:19,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:19,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:19,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 04:56:19,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:19,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 04:56:19,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:19,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:19,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:19,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:19,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:19,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:19,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:19,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:19,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:19,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:19,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:19,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:19,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:19,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:56:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:19,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:19,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:19,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:56:19,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:19,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 04:56:19,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:19,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:19,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:19,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:19,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:56:19,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:19,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 04:56:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:19,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:19,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:19,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:19,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:19,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 04:56:19,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:19,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:19,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:56:19,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:19,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:56:19,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:19,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 04:56:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:19,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:19,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:19,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:56:19,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:19,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 04:56:19,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:19,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:19,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:56:19,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:19,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:56:19,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:20,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:56:20,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69397869] [2020-10-14 04:56:20,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:20,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 04:56:20,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080997029] [2020-10-14 04:56:20,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 04:56:20,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:20,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 04:56:20,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:56:20,018 INFO L87 Difference]: Start difference. First operand 115 states and 146 transitions. Second operand 14 states. [2020-10-14 04:56:22,599 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-10-14 04:56:23,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:23,570 INFO L93 Difference]: Finished difference Result 150 states and 193 transitions. [2020-10-14 04:56:23,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 04:56:23,574 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 39 [2020-10-14 04:56:23,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:23,576 INFO L225 Difference]: With dead ends: 150 [2020-10-14 04:56:23,577 INFO L226 Difference]: Without dead ends: 148 [2020-10-14 04:56:23,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:56:23,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-14 04:56:23,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 128. [2020-10-14 04:56:23,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-14 04:56:23,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 164 transitions. [2020-10-14 04:56:23,603 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 164 transitions. Word has length 39 [2020-10-14 04:56:23,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:23,603 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 164 transitions. [2020-10-14 04:56:23,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 04:56:23,604 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 164 transitions. [2020-10-14 04:56:23,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 04:56:23,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:23,605 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:56:23,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 04:56:23,605 INFO L427 AbstractCegarLoop]: === Iteration 14 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:23,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:23,605 INFO L82 PathProgramCache]: Analyzing trace with hash 661929696, now seen corresponding path program 1 times [2020-10-14 04:56:23,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:23,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774646262] [2020-10-14 04:56:23,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:23,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:24,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:25,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:25,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 04:56:25,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:56:25,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1461 [2020-10-14 04:56:25,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:25,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:25,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 04:56:25,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:25,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 04:56:25,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:25,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:25,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:25,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:25,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:25,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:25,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:56:25,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:25,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:25,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:25,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:25,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:25,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:25,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:56:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:25,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:25,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:25,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:56:25,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:25,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 04:56:25,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:25,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:25,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:56:25,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:25,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:56:25,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:25,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 04:56:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:25,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:25,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:25,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:25,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:25,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 04:56:25,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:25,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:25,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:56:25,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:25,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:56:25,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:25,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 04:56:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:25,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:25,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:25,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:56:25,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:25,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:56:25,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:25,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:25,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:56:25,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:25,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:56:25,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:26,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:56:26,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774646262] [2020-10-14 04:56:26,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:26,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:56:26,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18070439] [2020-10-14 04:56:26,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:56:26,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:26,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:56:26,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:56:26,108 INFO L87 Difference]: Start difference. First operand 128 states and 164 transitions. Second operand 17 states. [2020-10-14 04:56:29,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:29,279 INFO L93 Difference]: Finished difference Result 183 states and 238 transitions. [2020-10-14 04:56:29,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:56:29,287 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 39 [2020-10-14 04:56:29,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:29,288 INFO L225 Difference]: With dead ends: 183 [2020-10-14 04:56:29,289 INFO L226 Difference]: Without dead ends: 171 [2020-10-14 04:56:29,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2020-10-14 04:56:29,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-14 04:56:29,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 149. [2020-10-14 04:56:29,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-14 04:56:29,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 194 transitions. [2020-10-14 04:56:29,316 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 194 transitions. Word has length 39 [2020-10-14 04:56:29,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:29,316 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 194 transitions. [2020-10-14 04:56:29,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:56:29,316 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 194 transitions. [2020-10-14 04:56:29,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 04:56:29,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:29,318 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:56:29,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 04:56:29,318 INFO L427 AbstractCegarLoop]: === Iteration 15 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:29,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:29,318 INFO L82 PathProgramCache]: Analyzing trace with hash 2048133090, now seen corresponding path program 1 times [2020-10-14 04:56:29,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:29,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589248100] [2020-10-14 04:56:29,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:29,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:29,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:29,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:29,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 04:56:29,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:29,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-14 04:56:29,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:29,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:29,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:56:29,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 04:56:29,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:56:29,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:29,807 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 11 [2020-10-14 04:56:29,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:29,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:29,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:29,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:29,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:29,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:56:29,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:29,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:29,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:29,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:29,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:29,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:29,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:56:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:29,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:29,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:29,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:56:29,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:29,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 04:56:29,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:29,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:29,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:56:29,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:29,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:56:29,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:30,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 04:56:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:30,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:30,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:30,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:30,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:30,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:56:30,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:30,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:30,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:30,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:56:30,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:30,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:30,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 04:56:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:30,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:30,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:30,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:56:30,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:30,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:30,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:30,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:30,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:30,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 04:56:30,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:30,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:30,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:56:30,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589248100] [2020-10-14 04:56:30,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:56:30,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 04:56:30,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752510698] [2020-10-14 04:56:30,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:56:30,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:30,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:56:30,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:56:30,100 INFO L87 Difference]: Start difference. First operand 149 states and 194 transitions. Second operand 9 states. [2020-10-14 04:56:31,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:31,642 INFO L93 Difference]: Finished difference Result 258 states and 327 transitions. [2020-10-14 04:56:31,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:56:31,646 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2020-10-14 04:56:31,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:31,648 INFO L225 Difference]: With dead ends: 258 [2020-10-14 04:56:31,648 INFO L226 Difference]: Without dead ends: 145 [2020-10-14 04:56:31,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:56:31,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-14 04:56:31,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 127. [2020-10-14 04:56:31,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-14 04:56:31,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 160 transitions. [2020-10-14 04:56:31,667 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 160 transitions. Word has length 39 [2020-10-14 04:56:31,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:31,668 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 160 transitions. [2020-10-14 04:56:31,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:56:31,668 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 160 transitions. [2020-10-14 04:56:31,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 04:56:31,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:31,669 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:56:31,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 04:56:31,671 INFO L427 AbstractCegarLoop]: === Iteration 16 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:31,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:31,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1462823114, now seen corresponding path program 1 times [2020-10-14 04:56:31,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:31,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698346494] [2020-10-14 04:56:31,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:31,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:32,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:34,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:34,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 04:56:34,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:56:34,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2487 [2020-10-14 04:56:34,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:34,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:34,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 04:56:34,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:34,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 04:56:34,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:34,761 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2020-10-14 04:56:35,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:35,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:35,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:35,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:35,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:35,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:56:35,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:35,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:35,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:35,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:35,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:35,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:35,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:56:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:35,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:35,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:35,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:56:35,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:35,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 04:56:35,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:35,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:35,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:56:35,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:35,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 04:56:35,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:36,005 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2020-10-14 04:56:36,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 04:56:36,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:36,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:36,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:36,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:36,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:36,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 04:56:36,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:36,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:36,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:56:36,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:36,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:56:36,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0