/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 SingleStatement --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=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:50:13,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:50:13,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:50:13,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:50:13,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:50:13,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:50:13,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:50:13,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:50:13,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:50:13,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:50:13,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:50:13,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:50:13,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:50:13,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:50:13,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:50:13,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:50:13,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:50:13,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:50:13,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:50:13,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:50:13,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:50:13,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:50:13,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:50:13,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:50:13,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:50:13,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:50:13,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:50:13,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:50:13,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:50:13,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:50:13,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:50:13,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:50:13,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:50:13,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:50:13,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:50:13,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:50:13,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:50:13,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:50:13,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:50:13,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:50:13,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:50:13,771 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 [2020-09-25 07:50:13,810 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:50:13,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:50:13,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:50:13,812 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:50:13,813 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:50:13,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:50:13,813 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:50:13,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:50:13,813 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:50:13,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:50:13,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:50:13,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:50:13,814 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:50:13,814 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:50:13,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:50:13,815 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:50:13,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:50:13,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:50:13,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:50:13,816 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:50:13,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:50:13,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:50:13,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:50:13,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:50:13,817 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:50:13,817 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:50:13,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:50:13,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:50:13,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:50:13,818 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 -> SingleStatement 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=0.8;log-additional-information=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=0.8;log-additional-information=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=0.8;log-additional-information=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=0.8;log-additional-information=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=0.8;log-additional-information=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=0.8;log-additional-information=true; [2020-09-25 07:50:14,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:50:14,283 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:50:14,287 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:50:14,289 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:50:14,290 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:50:14,291 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-09-25 07:50:14,364 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a56d4697e/ae0fdad7044d45e7ba3f3e2600070159/FLAG8facedfc2 [2020-09-25 07:50:15,005 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:50:15,006 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-09-25 07:50:15,023 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a56d4697e/ae0fdad7044d45e7ba3f3e2600070159/FLAG8facedfc2 [2020-09-25 07:50:15,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a56d4697e/ae0fdad7044d45e7ba3f3e2600070159 [2020-09-25 07:50:15,252 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:50:15,258 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:50:15,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:50:15,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:50:15,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:50:15,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:50:15" (1/1) ... [2020-09-25 07:50:15,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@400dbee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:15, skipping insertion in model container [2020-09-25 07:50:15,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:50:15" (1/1) ... [2020-09-25 07:50:15,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:50:15,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:50:15,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:50:15,850 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:50:15,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:50:15,999 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:50:16,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:15 WrapperNode [2020-09-25 07:50:16,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:50:16,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:50:16,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:50:16,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:50:16,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:15" (1/1) ... [2020-09-25 07:50:16,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:15" (1/1) ... [2020-09-25 07:50:16,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:15" (1/1) ... [2020-09-25 07:50:16,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:15" (1/1) ... [2020-09-25 07:50:16,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:15" (1/1) ... [2020-09-25 07:50:16,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:15" (1/1) ... [2020-09-25 07:50:16,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:15" (1/1) ... [2020-09-25 07:50:16,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:50:16,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:50:16,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:50:16,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:50:16,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:15" (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 [2020-09-25 07:50:16,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:50:16,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:50:16,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 07:50:16,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 07:50:16,171 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 07:50:16,171 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:50:16,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:50:16,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:50:16,171 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 07:50:16,171 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 07:50:16,172 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 07:50:16,172 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 07:50:16,172 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 07:50:16,172 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 07:50:16,172 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 07:50:16,173 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 07:50:16,173 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 07:50:16,173 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 07:50:16,173 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 07:50:16,173 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 07:50:16,173 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 07:50:16,174 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 07:50:16,174 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 07:50:16,174 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 07:50:16,174 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 07:50:16,174 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 07:50:16,174 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 07:50:16,175 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 07:50:16,175 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 07:50:16,175 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 07:50:16,175 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 07:50:16,175 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 07:50:16,175 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 07:50:16,175 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 07:50:16,175 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 07:50:16,176 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 07:50:16,176 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 07:50:16,176 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 07:50:16,176 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 07:50:16,176 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 07:50:16,176 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 07:50:16,176 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 07:50:16,176 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 07:50:16,177 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 07:50:16,177 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 07:50:16,177 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 07:50:16,177 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 07:50:16,177 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 07:50:16,177 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 07:50:16,177 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 07:50:16,178 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 07:50:16,178 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 07:50:16,178 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 07:50:16,178 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 07:50:16,178 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 07:50:16,178 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 07:50:16,178 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 07:50:16,179 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 07:50:16,179 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 07:50:16,179 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 07:50:16,179 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 07:50:16,179 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 07:50:16,179 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 07:50:16,180 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 07:50:16,180 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 07:50:16,180 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 07:50:16,180 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 07:50:16,180 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 07:50:16,180 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 07:50:16,181 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 07:50:16,181 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 07:50:16,181 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 07:50:16,181 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 07:50:16,181 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:50:16,181 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 07:50:16,182 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 07:50:16,182 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 07:50:16,182 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 07:50:16,182 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 07:50:16,182 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 07:50:16,182 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 07:50:16,183 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 07:50:16,183 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 07:50:16,183 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 07:50:16,183 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 07:50:16,183 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 07:50:16,183 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 07:50:16,183 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 07:50:16,184 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 07:50:16,184 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 07:50:16,184 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 07:50:16,184 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 07:50:16,184 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 07:50:16,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 07:50:16,185 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 07:50:16,185 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 07:50:16,185 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 07:50:16,185 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 07:50:16,185 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 07:50:16,185 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 07:50:16,185 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 07:50:16,186 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 07:50:16,186 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 07:50:16,186 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 07:50:16,186 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 07:50:16,186 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 07:50:16,186 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 07:50:16,187 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 07:50:16,187 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 07:50:16,187 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 07:50:16,187 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 07:50:16,187 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 07:50:16,187 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 07:50:16,188 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 07:50:16,188 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:50:16,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 07:50:16,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 07:50:16,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 07:50:16,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 07:50:16,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 07:50:16,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 07:50:16,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:50:16,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:50:16,554 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 07:50:16,987 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:50:16,987 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-25 07:50:16,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:50:16 BoogieIcfgContainer [2020-09-25 07:50:16,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:50:16,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:50:16,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:50:16,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:50:16,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:50:15" (1/3) ... [2020-09-25 07:50:17,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2f28f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:50:17, skipping insertion in model container [2020-09-25 07:50:17,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:15" (2/3) ... [2020-09-25 07:50:17,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2f28f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:50:17, skipping insertion in model container [2020-09-25 07:50:17,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:50:16" (3/3) ... [2020-09-25 07:50:17,003 INFO L109 eAbstractionObserver]: Analyzing ICFG list_and_tree_cnstr-1.i [2020-09-25 07:50:17,015 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:50:17,026 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:50:17,049 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:50:17,083 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:50:17,084 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:50:17,084 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:50:17,084 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:50:17,084 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:50:17,084 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:50:17,084 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:50:17,088 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:50:17,113 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-09-25 07:50:17,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 07:50:17,126 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:17,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:17,127 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:17,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:17,134 INFO L82 PathProgramCache]: Analyzing trace with hash -652445128, now seen corresponding path program 1 times [2020-09-25 07:50:17,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:17,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339283927] [2020-09-25 07:50:17,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:17,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:17,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:17,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:17,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:17,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:17,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:17,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:18,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:18,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 07:50:18,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:50:18,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 895 [2020-09-25 07:50:18,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:18,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:18,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:18,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 07:50:18,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:18,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:50:18,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:18,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:18,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:18,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:18,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:18,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:50:18,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:18,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:18,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:18,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:18,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:18,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:18,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:50:18,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339283927] [2020-09-25 07:50:18,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:18,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:50:18,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25615764] [2020-09-25 07:50:18,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:50:18,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:18,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:50:18,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:50:18,344 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 3 states. [2020-09-25 07:50:18,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:18,743 INFO L93 Difference]: Finished difference Result 342 states and 400 transitions. [2020-09-25 07:50:18,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:50:18,745 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-25 07:50:18,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:18,758 INFO L225 Difference]: With dead ends: 342 [2020-09-25 07:50:18,759 INFO L226 Difference]: Without dead ends: 166 [2020-09-25 07:50:18,765 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 [2020-09-25 07:50:18,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-25 07:50:18,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-09-25 07:50:18,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-09-25 07:50:18,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 183 transitions. [2020-09-25 07:50:18,825 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 183 transitions. Word has length 31 [2020-09-25 07:50:18,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:18,826 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 183 transitions. [2020-09-25 07:50:18,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:50:18,826 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 183 transitions. [2020-09-25 07:50:18,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 07:50:18,829 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:18,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:18,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:50:18,830 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:18,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:18,830 INFO L82 PathProgramCache]: Analyzing trace with hash 473660712, now seen corresponding path program 1 times [2020-09-25 07:50:18,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:18,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740596602] [2020-09-25 07:50:18,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:18,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:18,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:19,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:19,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 07:50:19,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:50:19,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-09-25 07:50:19,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:19,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:19,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:50:19,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 07:50:19,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 07:50:19,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:19,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:19,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:19,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:19,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:19,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:19,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:50:19,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:19,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:19,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:19,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:19,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:50:19,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740596602] [2020-09-25 07:50:19,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:19,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:50:19,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270241690] [2020-09-25 07:50:19,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:50:19,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:19,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:50:19,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:50:19,468 INFO L87 Difference]: Start difference. First operand 166 states and 183 transitions. Second operand 7 states. [2020-09-25 07:50:19,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:19,978 INFO L93 Difference]: Finished difference Result 243 states and 265 transitions. [2020-09-25 07:50:19,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:50:19,979 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-09-25 07:50:19,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:19,985 INFO L225 Difference]: With dead ends: 243 [2020-09-25 07:50:19,985 INFO L226 Difference]: Without dead ends: 237 [2020-09-25 07:50:19,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:50:19,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-09-25 07:50:20,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 179. [2020-09-25 07:50:20,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-09-25 07:50:20,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 199 transitions. [2020-09-25 07:50:20,023 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 199 transitions. Word has length 41 [2020-09-25 07:50:20,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:20,023 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 199 transitions. [2020-09-25 07:50:20,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:50:20,024 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 199 transitions. [2020-09-25 07:50:20,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 07:50:20,027 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:20,028 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:20,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:50:20,029 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:20,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:20,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1367895296, now seen corresponding path program 1 times [2020-09-25 07:50:20,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:20,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72798292] [2020-09-25 07:50:20,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:20,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:20,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:20,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:20,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 07:50:20,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:50:20,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 576 [2020-09-25 07:50:20,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:20,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:20,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:50:20,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 07:50:20,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:50:20,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:20,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:20,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:20,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:20,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:20,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:20,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:50:20,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:20,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:20,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:20,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:20,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:20,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:20,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:50:20,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72798292] [2020-09-25 07:50:20,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:20,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:50:20,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851939390] [2020-09-25 07:50:20,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:50:20,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:20,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:50:20,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:50:20,733 INFO L87 Difference]: Start difference. First operand 179 states and 199 transitions. Second operand 7 states. [2020-09-25 07:50:21,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:21,149 INFO L93 Difference]: Finished difference Result 246 states and 268 transitions. [2020-09-25 07:50:21,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:50:21,150 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2020-09-25 07:50:21,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:21,153 INFO L225 Difference]: With dead ends: 246 [2020-09-25 07:50:21,153 INFO L226 Difference]: Without dead ends: 231 [2020-09-25 07:50:21,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:50:21,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-09-25 07:50:21,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 176. [2020-09-25 07:50:21,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-25 07:50:21,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 195 transitions. [2020-09-25 07:50:21,168 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 195 transitions. Word has length 47 [2020-09-25 07:50:21,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:21,168 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 195 transitions. [2020-09-25 07:50:21,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:50:21,169 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 195 transitions. [2020-09-25 07:50:21,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 07:50:21,171 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:21,171 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:21,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:50:21,172 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:21,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:21,172 INFO L82 PathProgramCache]: Analyzing trace with hash -331213520, now seen corresponding path program 1 times [2020-09-25 07:50:21,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:21,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302392771] [2020-09-25 07:50:21,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:21,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:21,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:21,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:21,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 07:50:21,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:50:21,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 494 [2020-09-25 07:50:21,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:21,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:21,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:50:21,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 07:50:21,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 07:50:21,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:21,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:21,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:21,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:21,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:21,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:21,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:50:21,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:21,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:21,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:21,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:21,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:21,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:21,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 07:50:21,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302392771] [2020-09-25 07:50:21,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:21,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:50:21,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163104599] [2020-09-25 07:50:21,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:50:21,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:21,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:50:21,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:50:21,744 INFO L87 Difference]: Start difference. First operand 176 states and 195 transitions. Second operand 5 states. [2020-09-25 07:50:22,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:22,065 INFO L93 Difference]: Finished difference Result 271 states and 301 transitions. [2020-09-25 07:50:22,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:50:22,066 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-09-25 07:50:22,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:22,074 INFO L225 Difference]: With dead ends: 271 [2020-09-25 07:50:22,074 INFO L226 Difference]: Without dead ends: 211 [2020-09-25 07:50:22,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:50:22,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-09-25 07:50:22,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 210. [2020-09-25 07:50:22,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-09-25 07:50:22,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 234 transitions. [2020-09-25 07:50:22,118 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 234 transitions. Word has length 47 [2020-09-25 07:50:22,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:22,119 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 234 transitions. [2020-09-25 07:50:22,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:50:22,119 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 234 transitions. [2020-09-25 07:50:22,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 07:50:22,130 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:22,131 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:22,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:50:22,131 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:22,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:22,132 INFO L82 PathProgramCache]: Analyzing trace with hash -775600822, now seen corresponding path program 1 times [2020-09-25 07:50:22,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:22,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178242889] [2020-09-25 07:50:22,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:22,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:22,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:22,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:23,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:23,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 07:50:23,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:50:23,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1299 [2020-09-25 07:50:23,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:23,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:23,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:50:23,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 07:50:23,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 07:50:23,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:23,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:23,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:23,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:23,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:23,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:23,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:50:23,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:23,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:23,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:23,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:23,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:23,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:23,502 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 07:50:23,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178242889] [2020-09-25 07:50:23,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:23,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:50:23,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147208567] [2020-09-25 07:50:23,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:50:23,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:23,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:50:23,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:50:23,505 INFO L87 Difference]: Start difference. First operand 210 states and 234 transitions. Second operand 4 states. [2020-09-25 07:50:23,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:23,811 INFO L93 Difference]: Finished difference Result 341 states and 383 transitions. [2020-09-25 07:50:23,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 07:50:23,811 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-09-25 07:50:23,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:23,813 INFO L225 Difference]: With dead ends: 341 [2020-09-25 07:50:23,813 INFO L226 Difference]: Without dead ends: 212 [2020-09-25 07:50:23,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:50:23,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-09-25 07:50:23,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2020-09-25 07:50:23,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-09-25 07:50:23,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 236 transitions. [2020-09-25 07:50:23,822 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 236 transitions. Word has length 60 [2020-09-25 07:50:23,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:23,823 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 236 transitions. [2020-09-25 07:50:23,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:50:23,823 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 236 transitions. [2020-09-25 07:50:23,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 07:50:23,824 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:23,824 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:23,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:50:23,825 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:23,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:23,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1629716359, now seen corresponding path program 1 times [2020-09-25 07:50:23,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:23,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860083234] [2020-09-25 07:50:23,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:23,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:24,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:24,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 07:50:24,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:24,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-25 07:50:24,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:24,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:24,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:50:24,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 07:50:24,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 07:50:24,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:24,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:24,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:24,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:24,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:24,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:24,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:24,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:50:24,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:24,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:24,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:24,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:24,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:50:24,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860083234] [2020-09-25 07:50:24,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:24,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:50:24,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707471946] [2020-09-25 07:50:24,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:50:24,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:24,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:50:24,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:50:24,128 INFO L87 Difference]: Start difference. First operand 212 states and 236 transitions. Second operand 7 states. [2020-09-25 07:50:24,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:24,515 INFO L93 Difference]: Finished difference Result 264 states and 290 transitions. [2020-09-25 07:50:24,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:50:24,516 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-09-25 07:50:24,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:24,520 INFO L225 Difference]: With dead ends: 264 [2020-09-25 07:50:24,520 INFO L226 Difference]: Without dead ends: 240 [2020-09-25 07:50:24,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:50:24,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-09-25 07:50:24,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 207. [2020-09-25 07:50:24,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-09-25 07:50:24,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 230 transitions. [2020-09-25 07:50:24,534 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 230 transitions. Word has length 62 [2020-09-25 07:50:24,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:24,535 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 230 transitions. [2020-09-25 07:50:24,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:50:24,535 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 230 transitions. [2020-09-25 07:50:24,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 07:50:24,537 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:24,537 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:24,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:50:24,537 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:24,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:24,538 INFO L82 PathProgramCache]: Analyzing trace with hash 852438762, now seen corresponding path program 1 times [2020-09-25 07:50:24,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:24,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944252842] [2020-09-25 07:50:24,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:24,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:24,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:25,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:25,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 07:50:25,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:50:25,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1356 [2020-09-25 07:50:25,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:25,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:25,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:50:25,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 07:50:25,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 07:50:25,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:26,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:26,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:26,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:26,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:26,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:26,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:50:26,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:26,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:26,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:26,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:26,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:26,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:26,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:50:26,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944252842] [2020-09-25 07:50:26,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:26,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 07:50:26,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58677679] [2020-09-25 07:50:26,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 07:50:26,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:26,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 07:50:26,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:50:26,125 INFO L87 Difference]: Start difference. First operand 207 states and 230 transitions. Second operand 11 states. [2020-09-25 07:50:26,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:26,841 INFO L93 Difference]: Finished difference Result 288 states and 315 transitions. [2020-09-25 07:50:26,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 07:50:26,842 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-09-25 07:50:26,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:26,845 INFO L225 Difference]: With dead ends: 288 [2020-09-25 07:50:26,845 INFO L226 Difference]: Without dead ends: 282 [2020-09-25 07:50:26,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-09-25 07:50:26,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-09-25 07:50:26,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 226. [2020-09-25 07:50:26,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-25 07:50:26,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 251 transitions. [2020-09-25 07:50:26,855 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 251 transitions. Word has length 67 [2020-09-25 07:50:26,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:26,857 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 251 transitions. [2020-09-25 07:50:26,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 07:50:26,857 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 251 transitions. [2020-09-25 07:50:26,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 07:50:26,858 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:26,858 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:26,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 07:50:26,859 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:26,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:26,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1742912072, now seen corresponding path program 1 times [2020-09-25 07:50:26,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:26,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581920498] [2020-09-25 07:50:26,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:26,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:27,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:27,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:27,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 07:50:27,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:50:27,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1065 [2020-09-25 07:50:27,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:27,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:27,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 07:50:27,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 07:50:27,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 07:50:27,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:28,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:28,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:28,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:28,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:28,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:28,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:50:28,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:28,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:28,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:28,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:28,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:28,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:28,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:50:28,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581920498] [2020-09-25 07:50:28,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:28,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 07:50:28,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582509260] [2020-09-25 07:50:28,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 07:50:28,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:28,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 07:50:28,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:50:28,380 INFO L87 Difference]: Start difference. First operand 226 states and 251 transitions. Second operand 15 states. [2020-09-25 07:50:29,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:29,656 INFO L93 Difference]: Finished difference Result 329 states and 361 transitions. [2020-09-25 07:50:29,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 07:50:29,657 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 67 [2020-09-25 07:50:29,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:29,661 INFO L225 Difference]: With dead ends: 329 [2020-09-25 07:50:29,661 INFO L226 Difference]: Without dead ends: 323 [2020-09-25 07:50:29,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=226, Invalid=766, Unknown=0, NotChecked=0, Total=992 [2020-09-25 07:50:29,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-09-25 07:50:29,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 238. [2020-09-25 07:50:29,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-09-25 07:50:29,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 264 transitions. [2020-09-25 07:50:29,676 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 264 transitions. Word has length 67 [2020-09-25 07:50:29,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:29,679 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 264 transitions. [2020-09-25 07:50:29,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 07:50:29,679 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 264 transitions. [2020-09-25 07:50:29,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 07:50:29,680 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:29,680 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:29,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 07:50:29,680 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:29,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:29,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1875154110, now seen corresponding path program 1 times [2020-09-25 07:50:29,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:29,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61208461] [2020-09-25 07:50:29,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:29,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:29,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:30,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:31,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:33,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:33,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 07:50:33,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:50:33,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3883 [2020-09-25 07:50:33,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:33,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:33,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:50:33,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 07:50:33,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 07:50:33,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:33,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:33,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:33,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:33,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:33,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:33,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:33,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:50:33,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:33,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:33,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:33,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:33,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:33,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:33,716 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:50:33,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61208461] [2020-09-25 07:50:33,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:33,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:50:33,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006565058] [2020-09-25 07:50:33,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:50:33,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:33,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:50:33,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:50:33,724 INFO L87 Difference]: Start difference. First operand 238 states and 264 transitions. Second operand 9 states. [2020-09-25 07:50:34,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:34,214 INFO L93 Difference]: Finished difference Result 305 states and 335 transitions. [2020-09-25 07:50:34,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:50:34,214 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2020-09-25 07:50:34,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:34,217 INFO L225 Difference]: With dead ends: 305 [2020-09-25 07:50:34,217 INFO L226 Difference]: Without dead ends: 290 [2020-09-25 07:50:34,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:50:34,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-09-25 07:50:34,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 245. [2020-09-25 07:50:34,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-09-25 07:50:34,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 272 transitions. [2020-09-25 07:50:34,230 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 272 transitions. Word has length 73 [2020-09-25 07:50:34,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:34,231 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 272 transitions. [2020-09-25 07:50:34,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:50:34,231 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 272 transitions. [2020-09-25 07:50:34,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 07:50:34,239 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:34,239 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:34,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 07:50:34,240 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:34,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:34,241 INFO L82 PathProgramCache]: Analyzing trace with hash -838472334, now seen corresponding path program 1 times [2020-09-25 07:50:34,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:34,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857433176] [2020-09-25 07:50:34,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:34,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:34,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:34,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 07:50:34,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:34,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 732 [2020-09-25 07:50:34,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:34,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:34,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 07:50:34,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 07:50:34,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 07:50:34,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:35,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:35,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:35,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:35,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:35,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:35,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:50:35,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:35,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:35,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:35,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:35,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:35,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:35,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:50:35,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857433176] [2020-09-25 07:50:35,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:35,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 07:50:35,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841389601] [2020-09-25 07:50:35,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 07:50:35,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:35,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 07:50:35,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:50:35,267 INFO L87 Difference]: Start difference. First operand 245 states and 272 transitions. Second operand 16 states. [2020-09-25 07:50:36,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:36,658 INFO L93 Difference]: Finished difference Result 310 states and 340 transitions. [2020-09-25 07:50:36,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 07:50:36,659 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 73 [2020-09-25 07:50:36,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:36,662 INFO L225 Difference]: With dead ends: 310 [2020-09-25 07:50:36,662 INFO L226 Difference]: Without dead ends: 304 [2020-09-25 07:50:36,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 07:50:36,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-09-25 07:50:36,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 249. [2020-09-25 07:50:36,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-09-25 07:50:36,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 276 transitions. [2020-09-25 07:50:36,672 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 276 transitions. Word has length 73 [2020-09-25 07:50:36,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:36,673 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 276 transitions. [2020-09-25 07:50:36,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 07:50:36,673 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 276 transitions. [2020-09-25 07:50:36,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 07:50:36,674 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:36,674 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:36,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 07:50:36,675 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:36,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:36,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1654345840, now seen corresponding path program 1 times [2020-09-25 07:50:36,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:36,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345005223] [2020-09-25 07:50:36,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:36,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:37,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:37,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 07:50:37,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:37,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 753 [2020-09-25 07:50:37,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:37,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:37,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 07:50:37,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 07:50:37,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 07:50:37,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:37,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:37,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:37,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:37,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:37,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:37,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:50:37,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:37,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:37,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:37,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:37,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:37,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:50:37,834 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:50:37,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345005223] [2020-09-25 07:50:37,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:37,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 07:50:37,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844032906] [2020-09-25 07:50:37,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 07:50:37,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:37,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 07:50:37,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:50:37,837 INFO L87 Difference]: Start difference. First operand 249 states and 276 transitions. Second operand 16 states. [2020-09-25 07:50:39,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:39,320 INFO L93 Difference]: Finished difference Result 324 states and 354 transitions. [2020-09-25 07:50:39,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 07:50:39,321 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 73 [2020-09-25 07:50:39,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:39,323 INFO L225 Difference]: With dead ends: 324 [2020-09-25 07:50:39,323 INFO L226 Difference]: Without dead ends: 318 [2020-09-25 07:50:39,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 07:50:39,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-09-25 07:50:39,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 258. [2020-09-25 07:50:39,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-09-25 07:50:39,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 286 transitions. [2020-09-25 07:50:39,334 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 286 transitions. Word has length 73 [2020-09-25 07:50:39,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:39,334 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 286 transitions. [2020-09-25 07:50:39,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 07:50:39,334 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 286 transitions. [2020-09-25 07:50:39,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 07:50:39,335 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:39,336 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:39,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 07:50:39,336 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:39,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:39,336 INFO L82 PathProgramCache]: Analyzing trace with hash -617664064, now seen corresponding path program 1 times [2020-09-25 07:50:39,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:39,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898953706] [2020-09-25 07:50:39,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:39,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:39,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:40,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:40,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 07:50:40,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:50:40,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1225 [2020-09-25 07:50:40,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:40,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:40,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:50:40,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 07:50:40,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 07:50:40,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:40,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:40,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:40,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:40,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:40,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:40,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:50:40,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:40,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:40,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:40,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:40,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:40,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:40,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:50:40,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898953706] [2020-09-25 07:50:40,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:40,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:50:40,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758147301] [2020-09-25 07:50:40,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:50:40,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:40,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:50:40,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:50:40,699 INFO L87 Difference]: Start difference. First operand 258 states and 286 transitions. Second operand 9 states. [2020-09-25 07:50:41,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:41,195 INFO L93 Difference]: Finished difference Result 316 states and 346 transitions. [2020-09-25 07:50:41,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:50:41,195 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2020-09-25 07:50:41,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:41,198 INFO L225 Difference]: With dead ends: 316 [2020-09-25 07:50:41,198 INFO L226 Difference]: Without dead ends: 297 [2020-09-25 07:50:41,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:50:41,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-09-25 07:50:41,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 258. [2020-09-25 07:50:41,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-09-25 07:50:41,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 285 transitions. [2020-09-25 07:50:41,213 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 285 transitions. Word has length 73 [2020-09-25 07:50:41,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:41,213 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 285 transitions. [2020-09-25 07:50:41,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:50:41,213 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 285 transitions. [2020-09-25 07:50:41,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 07:50:41,214 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:41,215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:41,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 07:50:41,215 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:41,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:41,216 INFO L82 PathProgramCache]: Analyzing trace with hash 342604767, now seen corresponding path program 2 times [2020-09-25 07:50:41,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:41,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729066631] [2020-09-25 07:50:41,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:41,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:41,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:43,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:43,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:50:43,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:50:43,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2476 [2020-09-25 07:50:43,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:43,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:43,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 07:50:43,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 07:50:43,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 07:50:43,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:44,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:44,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:44,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:44,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:44,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:44,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:50:44,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:44,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:44,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:44,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:44,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:44,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:44,069 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:50:44,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729066631] [2020-09-25 07:50:44,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:44,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 07:50:44,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103194165] [2020-09-25 07:50:44,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 07:50:44,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:44,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 07:50:44,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-09-25 07:50:44,073 INFO L87 Difference]: Start difference. First operand 258 states and 285 transitions. Second operand 18 states. [2020-09-25 07:50:45,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:45,927 INFO L93 Difference]: Finished difference Result 352 states and 384 transitions. [2020-09-25 07:50:45,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 07:50:45,928 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2020-09-25 07:50:45,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:45,930 INFO L225 Difference]: With dead ends: 352 [2020-09-25 07:50:45,931 INFO L226 Difference]: Without dead ends: 346 [2020-09-25 07:50:45,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=406, Invalid=1486, Unknown=0, NotChecked=0, Total=1892 [2020-09-25 07:50:45,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-09-25 07:50:45,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 272. [2020-09-25 07:50:45,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-09-25 07:50:45,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 300 transitions. [2020-09-25 07:50:45,953 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 300 transitions. Word has length 78 [2020-09-25 07:50:45,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:45,953 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 300 transitions. [2020-09-25 07:50:45,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 07:50:45,954 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 300 transitions. [2020-09-25 07:50:45,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 07:50:45,955 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:45,956 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:45,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 07:50:45,956 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:45,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:45,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1736898641, now seen corresponding path program 1 times [2020-09-25 07:50:45,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:45,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199266156] [2020-09-25 07:50:45,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:46,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:46,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:49,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:49,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:50:49,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:50:49,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3252 [2020-09-25 07:50:49,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:49,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:49,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 07:50:49,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 07:50:49,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 07:50:49,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:49,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:49,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:49,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:49,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:49,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:49,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:50:49,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:49,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:49,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:49,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:49,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:49,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:49,555 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:50:49,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199266156] [2020-09-25 07:50:49,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:49,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 07:50:49,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838037545] [2020-09-25 07:50:49,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 07:50:49,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:49,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 07:50:49,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-09-25 07:50:49,559 INFO L87 Difference]: Start difference. First operand 272 states and 300 transitions. Second operand 18 states. [2020-09-25 07:50:51,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:51,037 INFO L93 Difference]: Finished difference Result 378 states and 412 transitions. [2020-09-25 07:50:51,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 07:50:51,037 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2020-09-25 07:50:51,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:51,040 INFO L225 Difference]: With dead ends: 378 [2020-09-25 07:50:51,040 INFO L226 Difference]: Without dead ends: 372 [2020-09-25 07:50:51,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=406, Invalid=1486, Unknown=0, NotChecked=0, Total=1892 [2020-09-25 07:50:51,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-09-25 07:50:51,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 284. [2020-09-25 07:50:51,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-09-25 07:50:51,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 313 transitions. [2020-09-25 07:50:51,051 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 313 transitions. Word has length 78 [2020-09-25 07:50:51,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:51,051 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 313 transitions. [2020-09-25 07:50:51,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 07:50:51,052 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 313 transitions. [2020-09-25 07:50:51,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 07:50:51,053 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:51,053 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:51,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 07:50:51,053 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:51,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:51,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1698374602, now seen corresponding path program 1 times [2020-09-25 07:50:51,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:51,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017710767] [2020-09-25 07:50:51,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:51,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:51,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:51,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 07:50:51,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:51,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 690 [2020-09-25 07:50:51,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:51,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:51,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 07:50:51,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 07:50:51,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 07:50:51,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:52,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:52,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:52,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:52,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:52,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:52,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:50:52,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:52,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:52,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:52,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:52,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:52,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:52,064 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:50:52,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017710767] [2020-09-25 07:50:52,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:52,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 07:50:52,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19498415] [2020-09-25 07:50:52,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 07:50:52,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:52,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 07:50:52,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:50:52,067 INFO L87 Difference]: Start difference. First operand 284 states and 313 transitions. Second operand 16 states. [2020-09-25 07:50:53,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:53,522 INFO L93 Difference]: Finished difference Result 350 states and 382 transitions. [2020-09-25 07:50:53,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 07:50:53,522 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-09-25 07:50:53,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:53,525 INFO L225 Difference]: With dead ends: 350 [2020-09-25 07:50:53,525 INFO L226 Difference]: Without dead ends: 335 [2020-09-25 07:50:53,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=203, Invalid=987, Unknown=0, NotChecked=0, Total=1190 [2020-09-25 07:50:53,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-09-25 07:50:53,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 286. [2020-09-25 07:50:53,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-09-25 07:50:53,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 315 transitions. [2020-09-25 07:50:53,535 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 315 transitions. Word has length 79 [2020-09-25 07:50:53,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:53,535 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 315 transitions. [2020-09-25 07:50:53,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 07:50:53,535 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 315 transitions. [2020-09-25 07:50:53,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 07:50:53,536 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:53,537 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:53,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 07:50:53,537 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:53,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:53,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1559910918, now seen corresponding path program 2 times [2020-09-25 07:50:53,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:53,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871018871] [2020-09-25 07:50:53,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:53,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:53,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:54,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:54,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 07:50:54,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:54,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-09-25 07:50:54,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:54,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:54,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 07:50:54,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 07:50:54,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 07:50:54,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:54,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:54,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:54,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:54,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:54,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:54,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:54,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:50:54,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:54,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:54,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:54,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:54,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:54,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:50:54,706 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:50:54,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871018871] [2020-09-25 07:50:54,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:54,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 07:50:54,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291192580] [2020-09-25 07:50:54,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 07:50:54,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:54,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 07:50:54,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:50:54,712 INFO L87 Difference]: Start difference. First operand 286 states and 315 transitions. Second operand 16 states. [2020-09-25 07:50:56,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:56,089 INFO L93 Difference]: Finished difference Result 330 states and 361 transitions. [2020-09-25 07:50:56,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 07:50:56,090 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-09-25 07:50:56,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:56,091 INFO L225 Difference]: With dead ends: 330 [2020-09-25 07:50:56,092 INFO L226 Difference]: Without dead ends: 300 [2020-09-25 07:50:56,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2020-09-25 07:50:56,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-09-25 07:50:56,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 275. [2020-09-25 07:50:56,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-09-25 07:50:56,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 303 transitions. [2020-09-25 07:50:56,104 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 303 transitions. Word has length 79 [2020-09-25 07:50:56,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:56,104 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 303 transitions. [2020-09-25 07:50:56,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 07:50:56,104 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 303 transitions. [2020-09-25 07:50:56,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 07:50:56,105 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:56,106 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:56,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 07:50:56,106 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:56,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:56,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1643861864, now seen corresponding path program 2 times [2020-09-25 07:50:56,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:56,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856003834] [2020-09-25 07:50:56,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:56,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:56,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:56,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 07:50:56,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:56,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 620 [2020-09-25 07:50:56,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:56,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:56,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 07:50:56,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 07:50:56,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 07:50:56,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:57,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:57,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:57,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:57,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:57,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:57,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:50:57,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:57,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:57,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:57,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:57,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:57,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:57,041 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:50:57,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856003834] [2020-09-25 07:50:57,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:57,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 07:50:57,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545210916] [2020-09-25 07:50:57,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 07:50:57,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:57,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 07:50:57,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:50:57,043 INFO L87 Difference]: Start difference. First operand 275 states and 303 transitions. Second operand 16 states. [2020-09-25 07:50:58,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:58,477 INFO L93 Difference]: Finished difference Result 314 states and 343 transitions. [2020-09-25 07:50:58,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 07:50:58,478 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-09-25 07:50:58,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:58,479 INFO L225 Difference]: With dead ends: 314 [2020-09-25 07:50:58,479 INFO L226 Difference]: Without dead ends: 288 [2020-09-25 07:50:58,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=181, Invalid=875, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 07:50:58,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-09-25 07:50:58,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 261. [2020-09-25 07:50:58,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-09-25 07:50:58,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 288 transitions. [2020-09-25 07:50:58,488 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 288 transitions. Word has length 79 [2020-09-25 07:50:58,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:58,489 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 288 transitions. [2020-09-25 07:50:58,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 07:50:58,489 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 288 transitions. [2020-09-25 07:50:58,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-25 07:50:58,490 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:58,490 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:58,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 07:50:58,491 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:58,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:58,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1435872375, now seen corresponding path program 2 times [2020-09-25 07:50:58,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:58,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71717990] [2020-09-25 07:50:58,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:58,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:58,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:00,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:00,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 07:51:00,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:51:00,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2055 [2020-09-25 07:51:00,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:00,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:00,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 07:51:00,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 07:51:00,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 07:51:00,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:51:00,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:00,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:00,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:00,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:51:00,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:00,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:51:00,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:00,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:00,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:00,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:00,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:00,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:51:00,859 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:51:00,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71717990] [2020-09-25 07:51:00,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:00,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 07:51:00,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379371777] [2020-09-25 07:51:00,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 07:51:00,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:00,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 07:51:00,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:51:00,861 INFO L87 Difference]: Start difference. First operand 261 states and 288 transitions. Second operand 16 states.