/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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:35:05,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:35:05,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:35:05,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:35:05,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:35:05,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:35:05,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:35:05,861 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:35:05,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:35:05,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:35:05,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:35:05,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:35:05,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:35:05,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:35:05,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:35:05,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:35:05,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:35:05,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:35:05,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:35:05,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:35:05,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:35:05,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:35:05,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:35:05,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:35:05,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:35:05,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:35:05,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:35:05,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:35:05,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:35:05,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:35:05,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:35:05,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:35:05,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:35:05,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:35:05,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:35:05,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:35:05,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:35:05,897 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:35:05,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:35:05,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:35:05,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:35:05,903 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 04:35:05,963 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:35:05,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:35:05,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:35:05,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:35:05,967 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:35:05,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:35:05,967 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:35:05,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:35:05,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:35:05,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:35:05,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:35:05,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:35:05,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:35:05,968 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:35:05,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:35:05,970 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:35:05,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:35:05,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:35:05,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:35:05,971 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:35:05,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:35:05,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:35:05,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:35:05,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:35:05,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:35:05,972 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:35:05,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:35:05,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:35:05,973 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:35:05,974 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 04:35:06,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:35:06,528 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:35:06,533 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:35:06,536 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:35:06,536 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:35:06,538 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 04:35:06,634 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c3a1cce1/ff6e0dde36104dda824ba1591150f95c/FLAG0113bae78 [2020-09-25 04:35:07,211 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:35:07,211 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 04:35:07,225 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c3a1cce1/ff6e0dde36104dda824ba1591150f95c/FLAG0113bae78 [2020-09-25 04:35:07,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c3a1cce1/ff6e0dde36104dda824ba1591150f95c [2020-09-25 04:35:07,556 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:35:07,561 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:35:07,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:35:07,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:35:07,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:35:07,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:35:07" (1/1) ... [2020-09-25 04:35:07,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56344ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:35:07, skipping insertion in model container [2020-09-25 04:35:07,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:35:07" (1/1) ... [2020-09-25 04:35:07,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:35:07,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:35:07,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:35:07,927 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:35:07,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:35:08,061 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:35:08,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:35:08 WrapperNode [2020-09-25 04:35:08,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:35:08,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:35:08,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:35:08,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:35:08,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:35:08" (1/1) ... [2020-09-25 04:35:08,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:35:08" (1/1) ... [2020-09-25 04:35:08,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:35:08" (1/1) ... [2020-09-25 04:35:08,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:35:08" (1/1) ... [2020-09-25 04:35:08,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:35:08" (1/1) ... [2020-09-25 04:35:08,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:35:08" (1/1) ... [2020-09-25 04:35:08,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:35:08" (1/1) ... [2020-09-25 04:35:08,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:35:08,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:35:08,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:35:08,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:35:08,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:35:08" (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 04:35:08,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:35:08,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:35:08,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 04:35:08,200 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-09-25 04:35:08,200 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-09-25 04:35:08,200 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:35:08,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:35:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 04:35:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-09-25 04:35:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-09-25 04:35:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-09-25 04:35:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-09-25 04:35:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-09-25 04:35:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-09-25 04:35:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-09-25 04:35:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-09-25 04:35:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-09-25 04:35:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-09-25 04:35:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-09-25 04:35:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-09-25 04:35:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-09-25 04:35:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-25 04:35:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-09-25 04:35:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-09-25 04:35:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-09-25 04:35:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-09-25 04:35:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-09-25 04:35:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-09-25 04:35:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-09-25 04:35:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-09-25 04:35:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-09-25 04:35:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-09-25 04:35:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-09-25 04:35:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-09-25 04:35:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 04:35:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 04:35:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 04:35:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 04:35:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:35:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:35:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:35:08,700 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:35:08,700 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 04:35:08,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:35:08 BoogieIcfgContainer [2020-09-25 04:35:08,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:35:08,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:35:08,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:35:08,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:35:08,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:35:07" (1/3) ... [2020-09-25 04:35:08,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39bb5caa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:35:08, skipping insertion in model container [2020-09-25 04:35:08,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:35:08" (2/3) ... [2020-09-25 04:35:08,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39bb5caa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:35:08, skipping insertion in model container [2020-09-25 04:35:08,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:35:08" (3/3) ... [2020-09-25 04:35:08,720 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 04:35:08,730 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:35:08,741 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:35:08,764 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:35:08,798 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:35:08,799 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:35:08,799 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:35:08,799 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:35:08,799 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:35:08,799 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:35:08,799 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:35:08,800 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:35:08,825 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-09-25 04:35:08,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 04:35:08,836 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:35:08,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:35:08,838 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:35:08,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:35:08,846 INFO L82 PathProgramCache]: Analyzing trace with hash 2116113079, now seen corresponding path program 1 times [2020-09-25 04:35:08,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:35:08,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285292966] [2020-09-25 04:35:08,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:35:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:09,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:09,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:09,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:09,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:09,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:10,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:11,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:11,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 04:35:11,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:35:11,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2243 [2020-09-25 04:35:11,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:11,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:11,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:35:11,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 04:35:11,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:35:11,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:35:11,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:35:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:11,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:11,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:11,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:35:11,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:35:11,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:35:11,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:11,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:11,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:35:11,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:35:11,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:35:11,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 04:35:11,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 04:35:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:11,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:11,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:11,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:35:11,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:35:11,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:35:11,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:11,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:11,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:35:11,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:35:11,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:35:11,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:35:11,414 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 04:35:11,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285292966] [2020-09-25 04:35:11,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:35:11,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 04:35:11,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545647687] [2020-09-25 04:35:11,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 04:35:11,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:35:11,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 04:35:11,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:35:11,455 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 3 states. [2020-09-25 04:35:11,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:35:11,775 INFO L93 Difference]: Finished difference Result 227 states and 257 transitions. [2020-09-25 04:35:11,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 04:35:11,777 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-09-25 04:35:11,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:35:11,792 INFO L225 Difference]: With dead ends: 227 [2020-09-25 04:35:11,793 INFO L226 Difference]: Without dead ends: 102 [2020-09-25 04:35:11,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 04:35:11,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-25 04:35:11,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-09-25 04:35:11,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-09-25 04:35:11,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 111 transitions. [2020-09-25 04:35:11,859 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 111 transitions. Word has length 48 [2020-09-25 04:35:11,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:35:11,859 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 111 transitions. [2020-09-25 04:35:11,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 04:35:11,860 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 111 transitions. [2020-09-25 04:35:11,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 04:35:11,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:35:11,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:35:11,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:35:11,864 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:35:11,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:35:11,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1227098254, now seen corresponding path program 1 times [2020-09-25 04:35:11,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:35:11,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029929353] [2020-09-25 04:35:11,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:35:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:11,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:11,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:11,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:12,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:12,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:12,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:13,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:13,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:16,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:16,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 04:35:16,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:35:16,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:35:16,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:16,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:16,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:35:16,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 04:35:16,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 04:35:16,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:35:16,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:35:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:16,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:16,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:16,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:35:16,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:35:16,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:35:16,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:16,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:16,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:35:16,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:35:16,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:35:16,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:35:16,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 04:35:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:16,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:16,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:16,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:35:16,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:35:16,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:35:16,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:16,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:16,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:35:16,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:35:16,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:35:16,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:35:16,953 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 04:35:16,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029929353] [2020-09-25 04:35:16,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:35:16,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:35:16,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068067243] [2020-09-25 04:35:16,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:35:16,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:35:16,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:35:16,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:35:16,958 INFO L87 Difference]: Start difference. First operand 102 states and 111 transitions. Second operand 4 states. [2020-09-25 04:35:17,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:35:17,153 INFO L93 Difference]: Finished difference Result 189 states and 208 transitions. [2020-09-25 04:35:17,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 04:35:17,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-09-25 04:35:17,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:35:17,155 INFO L225 Difference]: With dead ends: 189 [2020-09-25 04:35:17,155 INFO L226 Difference]: Without dead ends: 103 [2020-09-25 04:35:17,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 04:35:17,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-09-25 04:35:17,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-09-25 04:35:17,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 04:35:17,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2020-09-25 04:35:17,169 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 60 [2020-09-25 04:35:17,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:35:17,169 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2020-09-25 04:35:17,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:35:17,170 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2020-09-25 04:35:17,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 04:35:17,172 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:35:17,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:35:17,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:35:17,173 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:35:17,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:35:17,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1578191403, now seen corresponding path program 1 times [2020-09-25 04:35:17,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:35:17,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525536810] [2020-09-25 04:35:17,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:35:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:17,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:17,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:17,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:17,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:17,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:18,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:19,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:19,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:35:19,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:35:19,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2437 [2020-09-25 04:35:19,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:19,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:19,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:35:19,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:35:19,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 04:35:19,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:35:19,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:35:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:19,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:19,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:19,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:35:19,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:35:19,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:35:19,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:19,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:19,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:35:19,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:35:19,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:35:19,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:35:19,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 04:35:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:19,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:19,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:19,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:35:19,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:35:19,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:35:19,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:19,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:19,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:35:19,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:35:19,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:35:19,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:35:19,767 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 04:35:19,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525536810] [2020-09-25 04:35:19,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:35:19,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 04:35:19,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340830623] [2020-09-25 04:35:19,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:35:19,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:35:19,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:35:19,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:35:19,770 INFO L87 Difference]: Start difference. First operand 103 states and 112 transitions. Second operand 8 states. [2020-09-25 04:35:20,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:35:20,200 INFO L93 Difference]: Finished difference Result 208 states and 232 transitions. [2020-09-25 04:35:20,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:35:20,201 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-09-25 04:35:20,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:35:20,207 INFO L225 Difference]: With dead ends: 208 [2020-09-25 04:35:20,208 INFO L226 Difference]: Without dead ends: 206 [2020-09-25 04:35:20,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-09-25 04:35:20,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-25 04:35:20,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 163. [2020-09-25 04:35:20,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-09-25 04:35:20,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 183 transitions. [2020-09-25 04:35:20,232 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 183 transitions. Word has length 62 [2020-09-25 04:35:20,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:35:20,233 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 183 transitions. [2020-09-25 04:35:20,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:35:20,233 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 183 transitions. [2020-09-25 04:35:20,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 04:35:20,240 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:35:20,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:35:20,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:35:20,241 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:35:20,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:35:20,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1116699365, now seen corresponding path program 1 times [2020-09-25 04:35:20,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:35:20,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089991450] [2020-09-25 04:35:20,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:35:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:20,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:20,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:20,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:20,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:20,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:20,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:23,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:23,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:23,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:23,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:23,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:25,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:25,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 04:35:25,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 04:35:25,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:35:25,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:25,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:25,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:35:25,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:35:25,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 04:35:25,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:35:25,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:35:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:25,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:25,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:25,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:35:25,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:35:25,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:35:25,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:25,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:25,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:35:25,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:35:25,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:35:25,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:35:25,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:35:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:25,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:25,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:25,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:35:25,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:35:25,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:35:25,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:25,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:25,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:35:25,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:35:25,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:35:25,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:35:25,374 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 04:35:25,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089991450] [2020-09-25 04:35:25,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:35:25,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 04:35:25,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317566460] [2020-09-25 04:35:25,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:35:25,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:35:25,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:35:25,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:35:25,379 INFO L87 Difference]: Start difference. First operand 163 states and 183 transitions. Second operand 8 states. [2020-09-25 04:35:25,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:35:25,884 INFO L93 Difference]: Finished difference Result 344 states and 387 transitions. [2020-09-25 04:35:25,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 04:35:25,885 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2020-09-25 04:35:25,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:35:25,892 INFO L225 Difference]: With dead ends: 344 [2020-09-25 04:35:25,892 INFO L226 Difference]: Without dead ends: 254 [2020-09-25 04:35:25,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:35:25,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-09-25 04:35:25,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 194. [2020-09-25 04:35:25,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-09-25 04:35:25,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 219 transitions. [2020-09-25 04:35:25,935 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 219 transitions. Word has length 65 [2020-09-25 04:35:25,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:35:25,936 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 219 transitions. [2020-09-25 04:35:25,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:35:25,936 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 219 transitions. [2020-09-25 04:35:25,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 04:35:25,941 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:35:25,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:35:25,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:35:25,945 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:35:25,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:35:25,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1492663361, now seen corresponding path program 1 times [2020-09-25 04:35:25,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:35:25,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058075649] [2020-09-25 04:35:25,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:35:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:25,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:25,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:26,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:26,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:26,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:26,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:26,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:27,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:28,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:28,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:28,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:28,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:29,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:29,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 04:35:29,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 04:35:29,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3799 [2020-09-25 04:35:29,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:29,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:29,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:35:29,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 04:35:29,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 04:35:29,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:35:29,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:35:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:29,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:29,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:29,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:35:29,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:35:29,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:35:29,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:29,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:29,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:35:29,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:35:29,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:35:29,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:35:29,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:35:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:29,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:29,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:29,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:35:29,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:35:29,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:35:29,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:29,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:29,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:35:29,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:35:29,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:35:29,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:35:29,850 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 04:35:29,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058075649] [2020-09-25 04:35:29,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:35:29,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:35:29,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898520049] [2020-09-25 04:35:29,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:35:29,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:35:29,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:35:29,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:35:29,856 INFO L87 Difference]: Start difference. First operand 194 states and 219 transitions. Second operand 4 states. [2020-09-25 04:35:30,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:35:30,065 INFO L93 Difference]: Finished difference Result 284 states and 320 transitions. [2020-09-25 04:35:30,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 04:35:30,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-09-25 04:35:30,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:35:30,067 INFO L225 Difference]: With dead ends: 284 [2020-09-25 04:35:30,068 INFO L226 Difference]: Without dead ends: 196 [2020-09-25 04:35:30,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 04:35:30,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-09-25 04:35:30,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2020-09-25 04:35:30,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-09-25 04:35:30,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 220 transitions. [2020-09-25 04:35:30,094 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 220 transitions. Word has length 65 [2020-09-25 04:35:30,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:35:30,095 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 220 transitions. [2020-09-25 04:35:30,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:35:30,095 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 220 transitions. [2020-09-25 04:35:30,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 04:35:30,098 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:35:30,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:35:30,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:35:30,099 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:35:30,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:35:30,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1905607281, now seen corresponding path program 1 times [2020-09-25 04:35:30,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:35:30,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803021227] [2020-09-25 04:35:30,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:35:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:30,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:30,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:30,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:30,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:30,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:30,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:31,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:31,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:31,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:34,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:34,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:34,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:35,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:35,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:35:35,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 04:35:35,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 04:35:35,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:35,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:35,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:35:35,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 04:35:35,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 04:35:35,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:35:35,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:35:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:35,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:35,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:35,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:35:35,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:35:35,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:35:35,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:35,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:35,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:35:35,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:35:35,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:35:35,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:35:35,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 04:35:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:35,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:35,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:35,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:35:35,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:35:35,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:35:35,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:35,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:35,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:35:35,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:35:35,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:35:35,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:35:35,213 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 04:35:35,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803021227] [2020-09-25 04:35:35,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:35:35,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:35:35,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455577062] [2020-09-25 04:35:35,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:35:35,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:35:35,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:35:35,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:35:35,217 INFO L87 Difference]: Start difference. First operand 196 states and 220 transitions. Second operand 5 states. [2020-09-25 04:35:35,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:35:35,401 INFO L93 Difference]: Finished difference Result 302 states and 338 transitions. [2020-09-25 04:35:35,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:35:35,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-09-25 04:35:35,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:35:35,404 INFO L225 Difference]: With dead ends: 302 [2020-09-25 04:35:35,404 INFO L226 Difference]: Without dead ends: 214 [2020-09-25 04:35:35,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 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 04:35:35,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-09-25 04:35:35,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 202. [2020-09-25 04:35:35,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-25 04:35:35,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 226 transitions. [2020-09-25 04:35:35,413 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 226 transitions. Word has length 66 [2020-09-25 04:35:35,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:35:35,413 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 226 transitions. [2020-09-25 04:35:35,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:35:35,413 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 226 transitions. [2020-09-25 04:35:35,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 04:35:35,414 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:35:35,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:35:35,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:35:35,415 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:35:35,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:35:35,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1492389340, now seen corresponding path program 1 times [2020-09-25 04:35:35,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:35:35,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736100772] [2020-09-25 04:35:35,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:35:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:35,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:35,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:35,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:35,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:35,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:35,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:36,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:36,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:36,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:37,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:37,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 04:35:37,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:35:37,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2070 [2020-09-25 04:35:37,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:37,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:37,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:35:37,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:35:37,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:35:37,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:35:37,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:35:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:37,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:37,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:37,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:35:37,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:35:37,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:35:37,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:37,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:37,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:35:37,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:35:37,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:35:37,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:35:37,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 04:35:37,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:37,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:37,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:37,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:35:37,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:35:37,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:35:37,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:37,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:37,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:35:37,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:35:37,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:35:37,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:35:37,580 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 04:35:37,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736100772] [2020-09-25 04:35:37,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:35:37,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 04:35:37,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395695988] [2020-09-25 04:35:37,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:35:37,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:35:37,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:35:37,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:35:37,582 INFO L87 Difference]: Start difference. First operand 202 states and 226 transitions. Second operand 6 states. [2020-09-25 04:35:37,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:35:37,842 INFO L93 Difference]: Finished difference Result 371 states and 413 transitions. [2020-09-25 04:35:37,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:35:37,842 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-09-25 04:35:37,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:35:37,845 INFO L225 Difference]: With dead ends: 371 [2020-09-25 04:35:37,845 INFO L226 Difference]: Without dead ends: 259 [2020-09-25 04:35:37,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:35:37,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-09-25 04:35:37,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 196. [2020-09-25 04:35:37,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-09-25 04:35:37,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 218 transitions. [2020-09-25 04:35:37,854 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 218 transitions. Word has length 67 [2020-09-25 04:35:37,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:35:37,855 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 218 transitions. [2020-09-25 04:35:37,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:35:37,855 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 218 transitions. [2020-09-25 04:35:37,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 04:35:37,856 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:35:37,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:35:37,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:35:37,857 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:35:37,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:35:37,857 INFO L82 PathProgramCache]: Analyzing trace with hash -846336012, now seen corresponding path program 1 times [2020-09-25 04:35:37,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:35:37,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842711170] [2020-09-25 04:35:37,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:35:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:37,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:37,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:37,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:37,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:38,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:38,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:38,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:39,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:39,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 04:35:39,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:35:39,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1464 [2020-09-25 04:35:39,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:39,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:39,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:35:39,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:35:39,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:35:39,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:35:39,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:35:39,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:39,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:39,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:39,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:35:39,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:35:39,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:35:39,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:39,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:39,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:35:39,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:35:39,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:35:39,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:35:39,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 04:35:39,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:39,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:39,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:39,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:35:39,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:35:39,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:35:39,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:39,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:39,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:35:39,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:35:39,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:35:39,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:35:39,398 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 04:35:39,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842711170] [2020-09-25 04:35:39,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:35:39,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 04:35:39,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848343128] [2020-09-25 04:35:39,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:35:39,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:35:39,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:35:39,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:35:39,401 INFO L87 Difference]: Start difference. First operand 196 states and 218 transitions. Second operand 6 states. [2020-09-25 04:35:39,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:35:39,702 INFO L93 Difference]: Finished difference Result 337 states and 375 transitions. [2020-09-25 04:35:39,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:35:39,703 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-09-25 04:35:39,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:35:39,705 INFO L225 Difference]: With dead ends: 337 [2020-09-25 04:35:39,705 INFO L226 Difference]: Without dead ends: 240 [2020-09-25 04:35:39,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:35:39,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-09-25 04:35:39,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 196. [2020-09-25 04:35:39,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-09-25 04:35:39,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 217 transitions. [2020-09-25 04:35:39,713 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 217 transitions. Word has length 68 [2020-09-25 04:35:39,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:35:39,713 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 217 transitions. [2020-09-25 04:35:39,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:35:39,714 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 217 transitions. [2020-09-25 04:35:39,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 04:35:39,719 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:35:39,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:35:39,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:35:39,720 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:35:39,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:35:39,720 INFO L82 PathProgramCache]: Analyzing trace with hash 574058161, now seen corresponding path program 1 times [2020-09-25 04:35:39,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:35:39,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000760702] [2020-09-25 04:35:39,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:35:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:39,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:39,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:39,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:40,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:41,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:41,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 04:35:41,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:35:41,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1828 [2020-09-25 04:35:41,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:41,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:41,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:35:41,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:35:41,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 04:35:41,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:35:41,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:35:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:41,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:41,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:41,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:35:41,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:35:41,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:35:41,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:41,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:41,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:35:41,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:35:41,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:35:41,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:35:41,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 04:35:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:41,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:41,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:41,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:35:41,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:35:41,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:35:41,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:41,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:41,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:35:41,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:35:41,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:35:41,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:35:41,675 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 04:35:41,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000760702] [2020-09-25 04:35:41,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:35:41,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 04:35:41,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194957360] [2020-09-25 04:35:41,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:35:41,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:35:41,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:35:41,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:35:41,678 INFO L87 Difference]: Start difference. First operand 196 states and 217 transitions. Second operand 8 states. [2020-09-25 04:35:42,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:35:42,299 INFO L93 Difference]: Finished difference Result 590 states and 658 transitions. [2020-09-25 04:35:42,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 04:35:42,300 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-09-25 04:35:42,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:35:42,305 INFO L225 Difference]: With dead ends: 590 [2020-09-25 04:35:42,306 INFO L226 Difference]: Without dead ends: 463 [2020-09-25 04:35:42,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2020-09-25 04:35:42,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2020-09-25 04:35:42,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 266. [2020-09-25 04:35:42,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-09-25 04:35:42,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 301 transitions. [2020-09-25 04:35:42,323 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 301 transitions. Word has length 70 [2020-09-25 04:35:42,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:35:42,324 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 301 transitions. [2020-09-25 04:35:42,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:35:42,324 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 301 transitions. [2020-09-25 04:35:42,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 04:35:42,330 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:35:42,330 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] [2020-09-25 04:35:42,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 04:35:42,331 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:35:42,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:35:42,332 INFO L82 PathProgramCache]: Analyzing trace with hash 588909148, now seen corresponding path program 1 times [2020-09-25 04:35:42,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:35:42,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590970346] [2020-09-25 04:35:42,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:35:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:42,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:42,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:42,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:42,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:42,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:42,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:43,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:43,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:46,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:46,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:46,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:46,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:47,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:47,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:35:47,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 04:35:47,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 04:35:47,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:47,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:47,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:35:47,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:35:47,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 04:35:47,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:35:47,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:35:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:47,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:47,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:47,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:35:47,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:35:47,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:35:47,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:47,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:47,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:35:47,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:35:47,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:35:47,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:35:47,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 04:35:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:47,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:47,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:47,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:35:47,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:35:47,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 04:35:47,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:47,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:47,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:35:47,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:35:47,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:35:47,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:35:47,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:35:47,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590970346] [2020-09-25 04:35:47,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:35:47,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 04:35:47,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752905626] [2020-09-25 04:35:47,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:35:47,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:35:47,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:35:47,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:35:47,487 INFO L87 Difference]: Start difference. First operand 266 states and 301 transitions. Second operand 8 states. [2020-09-25 04:35:47,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:35:47,983 INFO L93 Difference]: Finished difference Result 516 states and 580 transitions. [2020-09-25 04:35:47,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 04:35:47,984 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 72 [2020-09-25 04:35:47,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:35:47,986 INFO L225 Difference]: With dead ends: 516 [2020-09-25 04:35:47,986 INFO L226 Difference]: Without dead ends: 367 [2020-09-25 04:35:47,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:35:47,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-09-25 04:35:47,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 285. [2020-09-25 04:35:47,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2020-09-25 04:35:47,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 323 transitions. [2020-09-25 04:35:47,998 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 323 transitions. Word has length 72 [2020-09-25 04:35:47,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:35:47,999 INFO L479 AbstractCegarLoop]: Abstraction has 285 states and 323 transitions. [2020-09-25 04:35:47,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:35:47,999 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 323 transitions. [2020-09-25 04:35:48,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 04:35:48,000 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:35:48,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:35:48,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 04:35:48,001 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:35:48,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:35:48,001 INFO L82 PathProgramCache]: Analyzing trace with hash 926827883, now seen corresponding path program 1 times [2020-09-25 04:35:48,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:35:48,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862912997] [2020-09-25 04:35:48,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:35:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:48,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:48,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:48,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:48,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:51,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:53,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:53,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 04:35:53,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:35:53,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:35:53,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:53,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:53,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:35:53,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 04:35:53,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 04:35:53,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:35:53,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:35:53,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:53,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:53,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:53,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:35:53,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:35:53,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:35:53,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:53,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:53,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:35:53,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:35:53,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:35:53,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:35:53,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 04:35:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:53,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:53,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:35:53,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:35:53,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:35:53,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:35:53,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:35:53,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:35:53,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:35:53,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:35:53,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:35:53,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:35:53,111 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 04:35:53,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862912997] [2020-09-25 04:35:53,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:35:53,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 04:35:53,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448791852] [2020-09-25 04:35:53,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:35:53,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:35:53,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:35:53,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:35:53,114 INFO L87 Difference]: Start difference. First operand 285 states and 323 transitions. Second operand 8 states. [2020-09-25 04:35:53,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:35:53,560 INFO L93 Difference]: Finished difference Result 694 states and 784 transitions. [2020-09-25 04:35:53,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 04:35:53,561 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 73 [2020-09-25 04:35:53,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:35:53,565 INFO L225 Difference]: With dead ends: 694 [2020-09-25 04:35:53,565 INFO L226 Difference]: Without dead ends: 543 [2020-09-25 04:35:53,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:35:53,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2020-09-25 04:35:53,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 326. [2020-09-25 04:35:53,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-09-25 04:35:53,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 370 transitions. [2020-09-25 04:35:53,581 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 370 transitions. Word has length 73 [2020-09-25 04:35:53,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:35:53,581 INFO L479 AbstractCegarLoop]: Abstraction has 326 states and 370 transitions. [2020-09-25 04:35:53,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:35:53,581 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 370 transitions. [2020-09-25 04:35:53,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 04:35:53,583 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:35:53,583 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] [2020-09-25 04:35:53,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 04:35:53,583 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:35:53,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:35:53,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1474625812, now seen corresponding path program 1 times [2020-09-25 04:35:53,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:35:53,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167177821] [2020-09-25 04:35:53,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:35:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:35:53,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:53,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:53,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:53,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:53,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:54,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:54,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:54,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:54,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:54,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:54,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:35:55,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking...