/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:01:34,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:01:34,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:01:34,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:01:34,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:01:34,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:01:34,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:01:34,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:01:34,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:01:34,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:01:34,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:01:34,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:01:34,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:01:34,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:01:34,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:01:34,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:01:34,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:01:34,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:01:34,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:01:34,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:01:34,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:01:34,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:01:34,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:01:34,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:01:34,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:01:34,994 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:01:34,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:01:34,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:01:34,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:01:34,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:01:34,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:01:35,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:01:35,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:01:35,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:01:35,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:01:35,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:01:35,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:01:35,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:01:35,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:01:35,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:01:35,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:01:35,009 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 08:01:35,058 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:01:35,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:01:35,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:01:35,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:01:35,061 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:01:35,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:01:35,061 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:01:35,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:01:35,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:01:35,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:01:35,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:01:35,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:01:35,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:01:35,064 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:01:35,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:01:35,064 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:01:35,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:01:35,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:01:35,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:01:35,065 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:01:35,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:01:35,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:01:35,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:01:35,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:01:35,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:01:35,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:01:35,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:01:35,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:01:35,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:01:35,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 08:01:35,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:01:35,556 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:01:35,563 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:01:35,565 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:01:35,566 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:01:35,567 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 08:01:35,655 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd4ac749d/8cd172f4b4674dc8b886543e4e10c2ff/FLAGb092371c7 [2020-09-25 08:01:36,248 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:01:36,249 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 08:01:36,258 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd4ac749d/8cd172f4b4674dc8b886543e4e10c2ff/FLAGb092371c7 [2020-09-25 08:01:36,562 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd4ac749d/8cd172f4b4674dc8b886543e4e10c2ff [2020-09-25 08:01:36,575 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:01:36,581 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:01:36,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:01:36,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:01:36,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:01:36,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:01:36" (1/1) ... [2020-09-25 08:01:36,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@742cf951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:36, skipping insertion in model container [2020-09-25 08:01:36,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:01:36" (1/1) ... [2020-09-25 08:01:36,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:01:36,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:01:36,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:01:36,913 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:01:37,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:01:37,046 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:01:37,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:37 WrapperNode [2020-09-25 08:01:37,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:01:37,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:01:37,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:01:37,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:01:37,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:37" (1/1) ... [2020-09-25 08:01:37,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:37" (1/1) ... [2020-09-25 08:01:37,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:37" (1/1) ... [2020-09-25 08:01:37,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:37" (1/1) ... [2020-09-25 08:01:37,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:37" (1/1) ... [2020-09-25 08:01:37,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:37" (1/1) ... [2020-09-25 08:01:37,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:37" (1/1) ... [2020-09-25 08:01:37,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:01:37,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:01:37,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:01:37,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:01:37,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:37" (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 08:01:37,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:01:37,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:01:37,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 08:01:37,190 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-09-25 08:01:37,190 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-09-25 08:01:37,190 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:01:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:01:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 08:01:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-09-25 08:01:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-09-25 08:01:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-09-25 08:01:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-09-25 08:01:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-09-25 08:01:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-09-25 08:01:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-09-25 08:01:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-09-25 08:01:37,193 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-09-25 08:01:37,193 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-09-25 08:01:37,193 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-09-25 08:01:37,193 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-09-25 08:01:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-09-25 08:01:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-25 08:01:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-09-25 08:01:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-09-25 08:01:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-09-25 08:01:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-09-25 08:01:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-09-25 08:01:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-09-25 08:01:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-09-25 08:01:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-09-25 08:01:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-09-25 08:01:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-09-25 08:01:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-09-25 08:01:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-09-25 08:01:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 08:01:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 08:01:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 08:01:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 08:01:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:01:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:01:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:01:37,669 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:01:37,670 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 08:01:37,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:01:37 BoogieIcfgContainer [2020-09-25 08:01:37,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:01:37,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:01:37,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:01:37,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:01:37,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:01:36" (1/3) ... [2020-09-25 08:01:37,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644f768d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:01:37, skipping insertion in model container [2020-09-25 08:01:37,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:37" (2/3) ... [2020-09-25 08:01:37,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644f768d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:01:37, skipping insertion in model container [2020-09-25 08:01:37,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:01:37" (3/3) ... [2020-09-25 08:01:37,687 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 08:01:37,698 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:01:37,709 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:01:37,732 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:01:37,765 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:01:37,765 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:01:37,765 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:01:37,765 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:01:37,766 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:01:37,766 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:01:37,766 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:01:37,766 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:01:37,794 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-09-25 08:01:37,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 08:01:37,805 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:01:37,807 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 08:01:37,807 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:01:37,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:01:37,815 INFO L82 PathProgramCache]: Analyzing trace with hash 2116113079, now seen corresponding path program 1 times [2020-09-25 08:01:37,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:01:37,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970880027] [2020-09-25 08:01:37,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:01:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:38,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:38,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:38,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:38,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:38,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:39,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:40,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:40,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 08:01:40,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:01:40,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2229 [2020-09-25 08:01:40,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:40,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:40,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:01:40,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 08:01:40,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:01:40,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 08:01:40,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:01:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:40,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:40,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:40,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:01:40,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:01:40,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:01:40,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:40,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:40,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:01:40,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:01:40,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:01:40,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:01:40,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 08:01:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:40,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:40,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:40,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 08:01:40,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:01:40,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:01:40,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:40,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:40,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:01:40,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:01:40,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:01:40,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:01:40,365 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 08:01:40,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970880027] [2020-09-25 08:01:40,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:01:40,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:01:40,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053007663] [2020-09-25 08:01:40,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:01:40,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:01:40,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:01:40,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:01:40,408 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 3 states. [2020-09-25 08:01:40,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:01:40,713 INFO L93 Difference]: Finished difference Result 227 states and 257 transitions. [2020-09-25 08:01:40,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:01:40,716 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-09-25 08:01:40,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:01:40,728 INFO L225 Difference]: With dead ends: 227 [2020-09-25 08:01:40,729 INFO L226 Difference]: Without dead ends: 102 [2020-09-25 08:01:40,735 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 08:01:40,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-25 08:01:40,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-09-25 08:01:40,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-09-25 08:01:40,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 111 transitions. [2020-09-25 08:01:40,796 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 111 transitions. Word has length 48 [2020-09-25 08:01:40,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:01:40,797 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 111 transitions. [2020-09-25 08:01:40,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:01:40,797 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 111 transitions. [2020-09-25 08:01:40,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 08:01:40,800 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:01:40,800 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 08:01:40,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:01:40,801 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:01:40,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:01:40,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1227098254, now seen corresponding path program 1 times [2020-09-25 08:01:40,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:01:40,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069140857] [2020-09-25 08:01:40,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:01:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:40,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:40,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:40,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:41,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:41,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:41,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:42,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:43,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:45,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:45,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 08:01:45,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 08:01:45,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 08:01:45,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:45,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:01:45,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 08:01:45,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 08:01:45,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:01:45,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:01:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:45,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:45,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:45,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:01:45,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:01:45,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:01:45,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:45,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:45,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:01:45,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:01:45,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:01:45,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:01:45,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 08:01:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:45,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:45,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:45,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 08:01:45,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:01:45,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:01:45,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:45,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:45,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:01:45,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:01:45,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:01:45,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:01:45,897 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 08:01:45,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069140857] [2020-09-25 08:01:45,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:01:45,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:01:45,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276751072] [2020-09-25 08:01:45,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:01:45,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:01:45,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:01:45,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:01:45,902 INFO L87 Difference]: Start difference. First operand 102 states and 111 transitions. Second operand 4 states. [2020-09-25 08:01:46,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:01:46,162 INFO L93 Difference]: Finished difference Result 189 states and 208 transitions. [2020-09-25 08:01:46,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 08:01:46,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-09-25 08:01:46,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:01:46,164 INFO L225 Difference]: With dead ends: 189 [2020-09-25 08:01:46,164 INFO L226 Difference]: Without dead ends: 103 [2020-09-25 08:01:46,167 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 08:01:46,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-09-25 08:01:46,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-09-25 08:01:46,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 08:01:46,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2020-09-25 08:01:46,179 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 60 [2020-09-25 08:01:46,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:01:46,180 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2020-09-25 08:01:46,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:01:46,181 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2020-09-25 08:01:46,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 08:01:46,183 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:01:46,183 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 08:01:46,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:01:46,184 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:01:46,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:01:46,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1578191403, now seen corresponding path program 1 times [2020-09-25 08:01:46,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:01:46,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70536801] [2020-09-25 08:01:46,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:01:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:46,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:46,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:46,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:46,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:46,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:47,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:48,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:48,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 08:01:48,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:01:48,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2300 [2020-09-25 08:01:48,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:48,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:01:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:01:48,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 08:01:48,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:01:48,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:01:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:48,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:48,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:48,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:01:48,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:01:48,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:01:48,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:48,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:48,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:01:48,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:01:48,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:01:48,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:01:48,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 08:01:48,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:48,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:48,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:48,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 08:01:48,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:01:48,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 08:01:48,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:48,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:48,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:01:48,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:01:48,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:01:48,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:01:48,669 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 08:01:48,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70536801] [2020-09-25 08:01:48,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:01:48,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 08:01:48,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666239964] [2020-09-25 08:01:48,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 08:01:48,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:01:48,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 08:01:48,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:01:48,673 INFO L87 Difference]: Start difference. First operand 103 states and 112 transitions. Second operand 8 states. [2020-09-25 08:01:49,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:01:49,199 INFO L93 Difference]: Finished difference Result 208 states and 232 transitions. [2020-09-25 08:01:49,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 08:01:49,200 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-09-25 08:01:49,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:01:49,206 INFO L225 Difference]: With dead ends: 208 [2020-09-25 08:01:49,206 INFO L226 Difference]: Without dead ends: 206 [2020-09-25 08:01:49,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-09-25 08:01:49,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-25 08:01:49,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 163. [2020-09-25 08:01:49,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-09-25 08:01:49,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 183 transitions. [2020-09-25 08:01:49,230 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 183 transitions. Word has length 62 [2020-09-25 08:01:49,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:01:49,231 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 183 transitions. [2020-09-25 08:01:49,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 08:01:49,231 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 183 transitions. [2020-09-25 08:01:49,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 08:01:49,235 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:01:49,235 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 08:01:49,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:01:49,235 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:01:49,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:01:49,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1116699365, now seen corresponding path program 1 times [2020-09-25 08:01:49,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:01:49,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990154031] [2020-09-25 08:01:49,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:01:49,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:49,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:49,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:49,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:49,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:49,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:49,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:52,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:52,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:52,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:52,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:52,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:54,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:54,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 08:01:54,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 08:01:54,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 08:01:54,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:54,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:54,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:01:54,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:01:54,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 08:01:54,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:01:54,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:01:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:54,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:54,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:54,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:01:54,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:01:54,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:01:54,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:54,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:54,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:01:54,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:01:54,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:01:54,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:01:54,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 08:01:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:54,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:54,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:54,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 08:01:54,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:01:54,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:01:54,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:54,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:54,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:01:54,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:01:54,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:01:54,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:01:54,401 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 08:01:54,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990154031] [2020-09-25 08:01:54,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:01:54,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 08:01:54,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492430203] [2020-09-25 08:01:54,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 08:01:54,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:01:54,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 08:01:54,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 08:01:54,406 INFO L87 Difference]: Start difference. First operand 163 states and 183 transitions. Second operand 10 states. [2020-09-25 08:01:55,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:01:55,054 INFO L93 Difference]: Finished difference Result 344 states and 387 transitions. [2020-09-25 08:01:55,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 08:01:55,055 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 65 [2020-09-25 08:01:55,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:01:55,060 INFO L225 Difference]: With dead ends: 344 [2020-09-25 08:01:55,061 INFO L226 Difference]: Without dead ends: 254 [2020-09-25 08:01:55,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-09-25 08:01:55,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-09-25 08:01:55,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 194. [2020-09-25 08:01:55,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-09-25 08:01:55,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 219 transitions. [2020-09-25 08:01:55,102 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 219 transitions. Word has length 65 [2020-09-25 08:01:55,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:01:55,102 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 219 transitions. [2020-09-25 08:01:55,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 08:01:55,102 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 219 transitions. [2020-09-25 08:01:55,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 08:01:55,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:01:55,110 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 08:01:55,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:01:55,111 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:01:55,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:01:55,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1492663361, now seen corresponding path program 1 times [2020-09-25 08:01:55,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:01:55,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720392892] [2020-09-25 08:01:55,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:01:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:55,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:55,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:55,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:55,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:55,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:55,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:55,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:56,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:57,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:57,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:57,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:57,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:58,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:58,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 08:01:58,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 08:01:58,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3535 [2020-09-25 08:01:58,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:58,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:58,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:01:58,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 08:01:58,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 08:01:58,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:01:58,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:01:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:58,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:58,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:58,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:01:58,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:01:58,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:01:58,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:58,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:58,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:01:58,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:01:58,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:01:58,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:01:58,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 08:01:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:58,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:58,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:58,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 08:01:58,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:01:58,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:01:58,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:58,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:58,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:01:58,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:01:58,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:01:58,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:01:58,750 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 08:01:58,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720392892] [2020-09-25 08:01:58,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:01:58,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:01:58,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740552478] [2020-09-25 08:01:58,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:01:58,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:01:58,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:01:58,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:01:58,754 INFO L87 Difference]: Start difference. First operand 194 states and 219 transitions. Second operand 4 states. [2020-09-25 08:01:58,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:01:58,952 INFO L93 Difference]: Finished difference Result 284 states and 320 transitions. [2020-09-25 08:01:58,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 08:01:58,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-09-25 08:01:58,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:01:58,955 INFO L225 Difference]: With dead ends: 284 [2020-09-25 08:01:58,955 INFO L226 Difference]: Without dead ends: 196 [2020-09-25 08:01:58,957 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 08:01:58,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-09-25 08:01:58,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2020-09-25 08:01:58,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-09-25 08:01:58,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 220 transitions. [2020-09-25 08:01:58,966 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 220 transitions. Word has length 65 [2020-09-25 08:01:58,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:01:58,966 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 220 transitions. [2020-09-25 08:01:58,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:01:58,967 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 220 transitions. [2020-09-25 08:01:58,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 08:01:58,969 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:01:58,969 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 08:01:58,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:01:58,970 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:01:58,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:01:58,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1905607281, now seen corresponding path program 1 times [2020-09-25 08:01:58,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:01:58,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786436638] [2020-09-25 08:01:58,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:01:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:59,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:59,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:59,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:59,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:59,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:59,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:00,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:00,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:00,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:03,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:03,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:03,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:03,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:03,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 08:02:03,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 08:02:03,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 08:02:03,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:03,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:03,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:02:03,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 08:02:03,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 08:02:03,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:04,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:04,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:04,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:04,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:02:04,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:04,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:02:04,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:04,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:04,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:04,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:04,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:04,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:04,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 08:02:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:04,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:04,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:04,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 08:02:04,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:04,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:02:04,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:04,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:04,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:04,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:02:04,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:04,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:04,106 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 08:02:04,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786436638] [2020-09-25 08:02:04,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:02:04,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 08:02:04,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283414914] [2020-09-25 08:02:04,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:02:04,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:04,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:02:04,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:02:04,110 INFO L87 Difference]: Start difference. First operand 196 states and 220 transitions. Second operand 6 states. [2020-09-25 08:02:04,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:02:04,434 INFO L93 Difference]: Finished difference Result 341 states and 383 transitions. [2020-09-25 08:02:04,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:02:04,434 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-09-25 08:02:04,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:02:04,440 INFO L225 Difference]: With dead ends: 341 [2020-09-25 08:02:04,440 INFO L226 Difference]: Without dead ends: 253 [2020-09-25 08:02:04,442 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 08:02:04,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-25 08:02:04,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 203. [2020-09-25 08:02:04,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-09-25 08:02:04,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 228 transitions. [2020-09-25 08:02:04,461 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 228 transitions. Word has length 66 [2020-09-25 08:02:04,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:02:04,462 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 228 transitions. [2020-09-25 08:02:04,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:02:04,462 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 228 transitions. [2020-09-25 08:02:04,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 08:02:04,464 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:04,464 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 08:02:04,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:02:04,465 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:04,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:04,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1492389340, now seen corresponding path program 1 times [2020-09-25 08:02:04,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:04,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352407865] [2020-09-25 08:02:04,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:04,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:04,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:04,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:04,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:04,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:05,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:05,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:05,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:05,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:06,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:06,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 08:02:06,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 08:02:06,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2121 [2020-09-25 08:02:06,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:06,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:06,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:02:06,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:02:06,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 08:02:06,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:06,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:06,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:06,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:06,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:02:06,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:06,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:02:06,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:06,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:06,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:06,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:06,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:06,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 08:02:06,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 08:02:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:06,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:06,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:06,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 08:02:06,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:06,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:02:06,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:06,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:06,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:06,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:02:06,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:06,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:06,706 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 08:02:06,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352407865] [2020-09-25 08:02:06,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:02:06,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 08:02:06,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854158350] [2020-09-25 08:02:06,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 08:02:06,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:06,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 08:02:06,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:02:06,709 INFO L87 Difference]: Start difference. First operand 203 states and 228 transitions. Second operand 8 states. [2020-09-25 08:02:07,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:02:07,095 INFO L93 Difference]: Finished difference Result 340 states and 378 transitions. [2020-09-25 08:02:07,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 08:02:07,096 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-09-25 08:02:07,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:02:07,097 INFO L225 Difference]: With dead ends: 340 [2020-09-25 08:02:07,098 INFO L226 Difference]: Without dead ends: 239 [2020-09-25 08:02:07,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-09-25 08:02:07,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-09-25 08:02:07,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 202. [2020-09-25 08:02:07,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-25 08:02:07,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 226 transitions. [2020-09-25 08:02:07,106 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 226 transitions. Word has length 67 [2020-09-25 08:02:07,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:02:07,107 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 226 transitions. [2020-09-25 08:02:07,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 08:02:07,107 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 226 transitions. [2020-09-25 08:02:07,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 08:02:07,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:07,108 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 08:02:07,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 08:02:07,108 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:07,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:07,109 INFO L82 PathProgramCache]: Analyzing trace with hash -508291602, now seen corresponding path program 1 times [2020-09-25 08:02:07,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:07,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062116136] [2020-09-25 08:02:07,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:07,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:07,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:07,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:07,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:09,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:11,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:11,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 08:02:11,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:02:11,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4682 [2020-09-25 08:02:11,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:11,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:11,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:02:11,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 08:02:11,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 08:02:11,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:11,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:11,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:11,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:11,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:02:11,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:11,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:02:11,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:11,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:11,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:11,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:11,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:11,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:11,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 08:02:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:11,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:11,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:11,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 08:02:11,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:11,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:02:11,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:11,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:11,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:11,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:02:11,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:11,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:11,855 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 08:02:11,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062116136] [2020-09-25 08:02:11,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:02:11,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:02:11,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252998708] [2020-09-25 08:02:11,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:02:11,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:11,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:02:11,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:02:11,857 INFO L87 Difference]: Start difference. First operand 202 states and 226 transitions. Second operand 5 states. [2020-09-25 08:02:12,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:02:12,083 INFO L93 Difference]: Finished difference Result 309 states and 346 transitions. [2020-09-25 08:02:12,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:02:12,084 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-09-25 08:02:12,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:02:12,086 INFO L225 Difference]: With dead ends: 309 [2020-09-25 08:02:12,086 INFO L226 Difference]: Without dead ends: 214 [2020-09-25 08:02:12,087 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 08:02:12,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-09-25 08:02:12,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 208. [2020-09-25 08:02:12,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-09-25 08:02:12,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 232 transitions. [2020-09-25 08:02:12,095 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 232 transitions. Word has length 68 [2020-09-25 08:02:12,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:02:12,095 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 232 transitions. [2020-09-25 08:02:12,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:02:12,096 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 232 transitions. [2020-09-25 08:02:12,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 08:02:12,097 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:12,097 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 08:02:12,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 08:02:12,098 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:12,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:12,098 INFO L82 PathProgramCache]: Analyzing trace with hash 122758570, now seen corresponding path program 1 times [2020-09-25 08:02:12,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:12,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677563263] [2020-09-25 08:02:12,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:12,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:12,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:12,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:12,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:12,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:12,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:13,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:16,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:16,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:16,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:17,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:17,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 08:02:17,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 08:02:17,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 08:02:17,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:17,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:17,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:02:17,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 08:02:17,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 08:02:17,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:17,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:17,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:17,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:17,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:02:17,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:17,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:02:17,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:17,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:17,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:17,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:17,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:17,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:17,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 08:02:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:17,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:17,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:17,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 08:02:17,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:17,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:02:17,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:17,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:17,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:17,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:02:17,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:17,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:17,218 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 08:02:17,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677563263] [2020-09-25 08:02:17,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:02:17,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 08:02:17,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542496250] [2020-09-25 08:02:17,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 08:02:17,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:17,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 08:02:17,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:02:17,227 INFO L87 Difference]: Start difference. First operand 208 states and 232 transitions. Second operand 8 states. [2020-09-25 08:02:17,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:02:17,628 INFO L93 Difference]: Finished difference Result 631 states and 714 transitions. [2020-09-25 08:02:17,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 08:02:17,633 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-09-25 08:02:17,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:02:17,636 INFO L225 Difference]: With dead ends: 631 [2020-09-25 08:02:17,637 INFO L226 Difference]: Without dead ends: 506 [2020-09-25 08:02:17,637 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 08:02:17,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-09-25 08:02:17,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 291. [2020-09-25 08:02:17,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-09-25 08:02:17,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 330 transitions. [2020-09-25 08:02:17,669 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 330 transitions. Word has length 70 [2020-09-25 08:02:17,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:02:17,669 INFO L479 AbstractCegarLoop]: Abstraction has 291 states and 330 transitions. [2020-09-25 08:02:17,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 08:02:17,670 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 330 transitions. [2020-09-25 08:02:17,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 08:02:17,671 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:17,671 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 08:02:17,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 08:02:17,672 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:17,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:17,672 INFO L82 PathProgramCache]: Analyzing trace with hash 588909148, now seen corresponding path program 1 times [2020-09-25 08:02:17,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:17,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898939016] [2020-09-25 08:02:17,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:17,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:17,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:17,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:17,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:17,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:18,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:18,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:18,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:21,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:21,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:21,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:21,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:22,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:22,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:02:22,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 08:02:22,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 08:02:22,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:22,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:22,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:02:22,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:02:22,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 08:02:22,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:22,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:22,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:22,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:22,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:02:22,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:22,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:02:22,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:22,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:22,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:22,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:22,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:22,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:22,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 08:02:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:22,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:22,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:22,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 08:02:22,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:22,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:02:22,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:22,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:22,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:22,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:22,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:02:22,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:22,844 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:02:22,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898939016] [2020-09-25 08:02:22,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:02:22,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 08:02:22,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519200526] [2020-09-25 08:02:22,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 08:02:22,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:22,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 08:02:22,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 08:02:22,846 INFO L87 Difference]: Start difference. First operand 291 states and 330 transitions. Second operand 10 states. [2020-09-25 08:02:23,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:02:23,723 INFO L93 Difference]: Finished difference Result 468 states and 529 transitions. [2020-09-25 08:02:23,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 08:02:23,723 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 72 [2020-09-25 08:02:23,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:02:23,726 INFO L225 Difference]: With dead ends: 468 [2020-09-25 08:02:23,726 INFO L226 Difference]: Without dead ends: 466 [2020-09-25 08:02:23,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2020-09-25 08:02:23,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-09-25 08:02:23,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 367. [2020-09-25 08:02:23,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-09-25 08:02:23,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 421 transitions. [2020-09-25 08:02:23,741 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 421 transitions. Word has length 72 [2020-09-25 08:02:23,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:02:23,742 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 421 transitions. [2020-09-25 08:02:23,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 08:02:23,742 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 421 transitions. [2020-09-25 08:02:23,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 08:02:23,743 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:23,744 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 08:02:23,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 08:02:23,744 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:23,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:23,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1474625812, now seen corresponding path program 1 times [2020-09-25 08:02:23,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:23,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299819068] [2020-09-25 08:02:23,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:23,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:23,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:23,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:24,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:24,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:24,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:24,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:24,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:24,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:24,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:24,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:25,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:28,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:28,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 08:02:28,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 08:02:28,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 08:02:28,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:28,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:28,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:02:28,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:02:28,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 08:02:28,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:28,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:28,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:28,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:28,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:02:28,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:28,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:02:28,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:28,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:28,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:28,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:28,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:28,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:28,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 08:02:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:28,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:28,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:28,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 08:02:28,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:28,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:02:28,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:28,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:02:28,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:28,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:02:28,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299819068] [2020-09-25 08:02:28,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:02:28,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 08:02:28,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28660898] [2020-09-25 08:02:28,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 08:02:28,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:28,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 08:02:28,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:02:28,919 INFO L87 Difference]: Start difference. First operand 367 states and 421 transitions. Second operand 12 states.