/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=DEEPEST --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 01:10:03,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:10:03,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:10:03,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:10:03,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:10:03,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:10:04,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:10:04,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:10:04,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:10:04,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:10:04,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:10:04,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:10:04,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:10:04,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:10:04,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:10:04,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:10:04,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:10:04,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:10:04,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:10:04,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:10:04,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:10:04,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:10:04,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:10:04,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:10:04,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:10:04,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:10:04,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:10:04,028 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:10:04,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:10:04,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:10:04,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:10:04,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:10:04,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:10:04,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:10:04,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:10:04,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:10:04,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:10:04,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:10:04,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:10:04,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:10:04,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:10:04,038 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 01:10:04,065 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:10:04,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:10:04,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:10:04,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:10:04,068 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:10:04,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:10:04,068 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:10:04,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:10:04,069 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:10:04,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:10:04,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:10:04,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:10:04,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:10:04,070 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:10:04,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:10:04,070 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:10:04,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:10:04,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:10:04,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:10:04,071 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:10:04,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:10:04,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:10:04,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:10:04,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:10:04,072 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:10:04,072 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:10:04,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:10:04,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:10:04,073 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:10:04,073 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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;log-additional-information=true; [2020-09-25 01:10:04,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:10:04,574 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:10:04,578 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:10:04,580 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:10:04,580 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:10:04,582 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 01:10:04,665 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a393e357/af4b5f4e6aca4ded9fea7c1ec6ed6523/FLAG29c4b1d5f [2020-09-25 01:10:05,274 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:10:05,275 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 01:10:05,289 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a393e357/af4b5f4e6aca4ded9fea7c1ec6ed6523/FLAG29c4b1d5f [2020-09-25 01:10:05,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a393e357/af4b5f4e6aca4ded9fea7c1ec6ed6523 [2020-09-25 01:10:05,565 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:10:05,574 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:10:05,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:10:05,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:10:05,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:10:05,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:10:05" (1/1) ... [2020-09-25 01:10:05,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b5d0024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:05, skipping insertion in model container [2020-09-25 01:10:05,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:10:05" (1/1) ... [2020-09-25 01:10:05,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:10:05,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:10:05,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:10:05,920 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:10:06,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:10:06,075 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:10:06,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:06 WrapperNode [2020-09-25 01:10:06,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:10:06,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:10:06,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:10:06,077 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:10:06,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:06" (1/1) ... [2020-09-25 01:10:06,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:06" (1/1) ... [2020-09-25 01:10:06,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:06" (1/1) ... [2020-09-25 01:10:06,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:06" (1/1) ... [2020-09-25 01:10:06,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:06" (1/1) ... [2020-09-25 01:10:06,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:06" (1/1) ... [2020-09-25 01:10:06,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:06" (1/1) ... [2020-09-25 01:10:06,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:10:06,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:10:06,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:10:06,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:10:06,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:06" (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 01:10:06,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:10:06,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:10:06,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 01:10:06,218 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-09-25 01:10:06,220 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-09-25 01:10:06,220 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:10:06,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:10:06,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 01:10:06,221 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-09-25 01:10:06,221 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-09-25 01:10:06,222 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-09-25 01:10:06,222 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-09-25 01:10:06,222 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-09-25 01:10:06,222 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-09-25 01:10:06,222 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-09-25 01:10:06,223 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-09-25 01:10:06,223 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-09-25 01:10:06,223 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-09-25 01:10:06,224 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-09-25 01:10:06,224 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-09-25 01:10:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-09-25 01:10:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-25 01:10:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-09-25 01:10:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-09-25 01:10:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-09-25 01:10:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-09-25 01:10:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-09-25 01:10:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-09-25 01:10:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-09-25 01:10:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-09-25 01:10:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-09-25 01:10:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-09-25 01:10:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-09-25 01:10:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-09-25 01:10:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:10:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:10:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:10:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:10:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:10:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:10:06,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:10:06,800 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:10:06,801 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 01:10:06,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:10:06 BoogieIcfgContainer [2020-09-25 01:10:06,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:10:06,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:10:06,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:10:06,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:10:06,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:10:05" (1/3) ... [2020-09-25 01:10:06,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c218dbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:10:06, skipping insertion in model container [2020-09-25 01:10:06,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:06" (2/3) ... [2020-09-25 01:10:06,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c218dbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:10:06, skipping insertion in model container [2020-09-25 01:10:06,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:10:06" (3/3) ... [2020-09-25 01:10:06,824 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 01:10:06,834 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:10:06,845 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:10:06,867 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:10:06,896 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:10:06,896 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:10:06,896 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:10:06,896 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:10:06,896 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:10:06,896 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:10:06,897 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:10:06,897 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:10:06,921 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-09-25 01:10:06,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 01:10:06,931 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:06,932 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 01:10:06,933 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:06,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:06,940 INFO L82 PathProgramCache]: Analyzing trace with hash 2116113079, now seen corresponding path program 1 times [2020-09-25 01:10:06,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:06,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143447020] [2020-09-25 01:10:06,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:07,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:07,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:07,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:07,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:07,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:08,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:09,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:09,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 01:10:09,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 01:10:09,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2419 [2020-09-25 01:10:09,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:09,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:09,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-25 01:10:09,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:09,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 01:10:09,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:09,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:09,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:09,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:10:09,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:09,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 01:10:09,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:09,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:09,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:09,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:09,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 15 [2020-09-25 01:10:09,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 01:10:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:09,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:09,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:09,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 01:10:09,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:09,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 01:10:09,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:09,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:09,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 01:10:09,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:09,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:09,738 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 01:10:09,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143447020] [2020-09-25 01:10:09,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:10:09,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 01:10:09,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067204418] [2020-09-25 01:10:09,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 01:10:09,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:09,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 01:10:09,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:10:09,783 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 3 states. [2020-09-25 01:10:10,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:10,242 INFO L93 Difference]: Finished difference Result 227 states and 257 transitions. [2020-09-25 01:10:10,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 01:10:10,246 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-09-25 01:10:10,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:10,270 INFO L225 Difference]: With dead ends: 227 [2020-09-25 01:10:10,270 INFO L226 Difference]: Without dead ends: 102 [2020-09-25 01:10:10,278 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 01:10:10,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-25 01:10:10,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-09-25 01:10:10,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-09-25 01:10:10,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 111 transitions. [2020-09-25 01:10:10,375 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 111 transitions. Word has length 48 [2020-09-25 01:10:10,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:10,376 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 111 transitions. [2020-09-25 01:10:10,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 01:10:10,377 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 111 transitions. [2020-09-25 01:10:10,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 01:10:10,379 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:10,380 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 01:10:10,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:10:10,380 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:10,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:10,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1227098254, now seen corresponding path program 1 times [2020-09-25 01:10:10,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:10,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458186887] [2020-09-25 01:10:10,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:10,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:10,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:10,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:11,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:11,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:11,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:11,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:12,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:15,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:15,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 01:10:15,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 01:10:15,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 01:10:15,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:15,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:10:15,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 01:10:15,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 01:10:15,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:15,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:15,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:15,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:15,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:10:15,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:15,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:10:15,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:15,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:15,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:15,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:15,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:15,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 01:10:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:15,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:15,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:15,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 01:10:15,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:15,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 01:10:15,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:15,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:15,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 01:10:15,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:15,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:15,497 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 01:10:15,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458186887] [2020-09-25 01:10:15,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:10:15,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:10:15,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334151362] [2020-09-25 01:10:15,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:10:15,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:15,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:10:15,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:10:15,503 INFO L87 Difference]: Start difference. First operand 102 states and 111 transitions. Second operand 4 states. [2020-09-25 01:10:15,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:15,729 INFO L93 Difference]: Finished difference Result 189 states and 208 transitions. [2020-09-25 01:10:15,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 01:10:15,731 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-09-25 01:10:15,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:15,733 INFO L225 Difference]: With dead ends: 189 [2020-09-25 01:10:15,733 INFO L226 Difference]: Without dead ends: 103 [2020-09-25 01:10:15,736 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 01:10:15,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-09-25 01:10:15,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-09-25 01:10:15,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 01:10:15,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2020-09-25 01:10:15,755 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 60 [2020-09-25 01:10:15,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:15,756 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2020-09-25 01:10:15,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:10:15,756 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2020-09-25 01:10:15,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 01:10:15,764 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:15,764 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 01:10:15,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:10:15,767 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:15,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:15,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1578191403, now seen corresponding path program 1 times [2020-09-25 01:10:15,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:15,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208978170] [2020-09-25 01:10:15,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:15,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:15,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:15,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:15,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:16,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:16,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:18,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:18,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 01:10:18,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 01:10:18,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2402 [2020-09-25 01:10:18,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:18,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:10:18,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 01:10:18,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 01:10:18,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:18,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:18,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:18,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:18,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:10:18,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:18,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 01:10:18,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:18,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:18,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:18,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:18,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:18,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 01:10:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:18,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:18,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:18,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 01:10:18,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:18,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 01:10:18,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:18,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:10:18,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:18,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 01:10:18,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:18,402 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 01:10:18,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208978170] [2020-09-25 01:10:18,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:10:18,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 01:10:18,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083271323] [2020-09-25 01:10:18,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 01:10:18,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:18,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 01:10:18,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 01:10:18,405 INFO L87 Difference]: Start difference. First operand 103 states and 112 transitions. Second operand 8 states. [2020-09-25 01:10:19,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:19,012 INFO L93 Difference]: Finished difference Result 208 states and 232 transitions. [2020-09-25 01:10:19,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 01:10:19,013 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-09-25 01:10:19,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:19,019 INFO L225 Difference]: With dead ends: 208 [2020-09-25 01:10:19,019 INFO L226 Difference]: Without dead ends: 206 [2020-09-25 01:10:19,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-09-25 01:10:19,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-25 01:10:19,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 163. [2020-09-25 01:10:19,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-09-25 01:10:19,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 183 transitions. [2020-09-25 01:10:19,042 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 183 transitions. Word has length 62 [2020-09-25 01:10:19,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:19,043 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 183 transitions. [2020-09-25 01:10:19,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 01:10:19,043 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 183 transitions. [2020-09-25 01:10:19,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 01:10:19,045 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:19,046 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 01:10:19,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:10:19,046 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:19,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:19,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1116699365, now seen corresponding path program 1 times [2020-09-25 01:10:19,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:19,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40107882] [2020-09-25 01:10:19,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:19,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:19,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:19,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:19,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:19,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:19,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:21,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:22,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:22,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:22,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:22,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:24,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:24,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 01:10:24,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 01:10:24,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 01:10:24,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:24,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 01:10:24,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 01:10:24,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 01:10:24,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:24,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:24,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:24,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:24,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:10:24,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:24,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:10:24,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:24,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:24,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:24,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:24,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:24,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 01:10:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:24,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:24,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:24,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 01:10:24,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:24,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 01:10:24,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:24,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:10:24,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:24,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 01:10:24,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:24,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:10:24,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40107882] [2020-09-25 01:10:24,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:10:24,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 01:10:24,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880125691] [2020-09-25 01:10:24,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 01:10:24,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:24,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 01:10:24,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 01:10:24,217 INFO L87 Difference]: Start difference. First operand 163 states and 183 transitions. Second operand 10 states. [2020-09-25 01:10:24,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:24,753 INFO L93 Difference]: Finished difference Result 329 states and 370 transitions. [2020-09-25 01:10:24,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 01:10:24,754 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 65 [2020-09-25 01:10:24,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:24,758 INFO L225 Difference]: With dead ends: 329 [2020-09-25 01:10:24,759 INFO L226 Difference]: Without dead ends: 239 [2020-09-25 01:10:24,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-09-25 01:10:24,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-09-25 01:10:24,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 191. [2020-09-25 01:10:24,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-25 01:10:24,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 215 transitions. [2020-09-25 01:10:24,775 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 215 transitions. Word has length 65 [2020-09-25 01:10:24,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:24,775 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 215 transitions. [2020-09-25 01:10:24,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 01:10:24,776 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 215 transitions. [2020-09-25 01:10:24,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 01:10:24,777 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:24,777 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 01:10:24,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:10:24,778 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:24,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:24,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1492663361, now seen corresponding path program 1 times [2020-09-25 01:10:24,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:24,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719691154] [2020-09-25 01:10:24,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:24,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:24,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:24,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:24,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:24,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:24,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:25,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:25,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:25,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:26,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:27,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:27,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:27,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:28,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:28,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 01:10:28,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 01:10:28,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3629 [2020-09-25 01:10:28,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:28,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:10:28,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 01:10:28,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 01:10:28,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:28,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:28,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:28,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:28,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:10:28,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:28,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:10:28,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:28,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:28,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:28,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:28,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:28,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 01:10:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:28,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:28,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:28,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 01:10:28,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:28,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:10:28,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:28,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:28,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 01:10:28,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:28,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:28,488 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 01:10:28,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719691154] [2020-09-25 01:10:28,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:10:28,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:10:28,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531483634] [2020-09-25 01:10:28,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:10:28,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:28,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:10:28,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:10:28,491 INFO L87 Difference]: Start difference. First operand 191 states and 215 transitions. Second operand 4 states. [2020-09-25 01:10:28,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:28,647 INFO L93 Difference]: Finished difference Result 280 states and 315 transitions. [2020-09-25 01:10:28,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 01:10:28,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-09-25 01:10:28,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:28,649 INFO L225 Difference]: With dead ends: 280 [2020-09-25 01:10:28,649 INFO L226 Difference]: Without dead ends: 192 [2020-09-25 01:10:28,650 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 01:10:28,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-09-25 01:10:28,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2020-09-25 01:10:28,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-09-25 01:10:28,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 215 transitions. [2020-09-25 01:10:28,672 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 215 transitions. Word has length 65 [2020-09-25 01:10:28,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:28,672 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 215 transitions. [2020-09-25 01:10:28,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:10:28,672 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 215 transitions. [2020-09-25 01:10:28,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 01:10:28,675 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:28,675 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 01:10:28,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 01:10:28,676 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:28,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:28,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1905607281, now seen corresponding path program 1 times [2020-09-25 01:10:28,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:28,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427981868] [2020-09-25 01:10:28,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:28,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:28,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:28,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:28,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:28,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:28,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:29,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:30,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:30,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:33,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:33,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:33,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:33,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:33,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 01:10:33,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 01:10:33,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 01:10:33,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:33,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:10:33,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 01:10:33,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 01:10:33,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:33,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:33,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:33,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:33,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:10:33,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:33,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:10:33,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:33,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:33,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:33,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:33,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:33,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 01:10:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:33,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:33,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:33,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 01:10:33,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:33,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:10:33,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:33,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:33,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 01:10:33,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:33,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:33,755 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 01:10:33,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427981868] [2020-09-25 01:10:33,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:10:33,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:10:33,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079281808] [2020-09-25 01:10:33,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:10:33,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:33,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:10:33,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:10:33,757 INFO L87 Difference]: Start difference. First operand 192 states and 215 transitions. Second operand 5 states. [2020-09-25 01:10:33,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:33,959 INFO L93 Difference]: Finished difference Result 304 states and 339 transitions. [2020-09-25 01:10:33,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:10:33,959 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-09-25 01:10:33,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:33,961 INFO L225 Difference]: With dead ends: 304 [2020-09-25 01:10:33,961 INFO L226 Difference]: Without dead ends: 210 [2020-09-25 01:10:33,962 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 01:10:33,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-09-25 01:10:33,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 198. [2020-09-25 01:10:33,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-09-25 01:10:33,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 221 transitions. [2020-09-25 01:10:33,971 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 221 transitions. Word has length 66 [2020-09-25 01:10:33,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:33,971 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 221 transitions. [2020-09-25 01:10:33,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:10:33,972 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 221 transitions. [2020-09-25 01:10:33,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 01:10:33,973 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:33,973 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 01:10:33,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 01:10:33,973 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:33,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:33,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1560412514, now seen corresponding path program 1 times [2020-09-25 01:10:33,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:33,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375112552] [2020-09-25 01:10:33,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:33,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:34,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:34,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:34,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:34,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:34,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:34,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:36,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:37,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:37,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:38,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:38,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 01:10:38,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 01:10:38,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 01:10:38,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:38,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:10:38,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 01:10:38,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 01:10:38,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:39,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:39,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:39,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:39,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:10:39,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:39,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:10:39,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:39,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:39,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:39,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:39,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 01:10:39,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 01:10:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:39,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:39,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:39,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 01:10:39,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:39,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:10:39,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:39,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:39,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 01:10:39,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:39,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:39,090 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 01:10:39,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375112552] [2020-09-25 01:10:39,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:10:39,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 01:10:39,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107881790] [2020-09-25 01:10:39,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:10:39,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:39,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:10:39,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:10:39,092 INFO L87 Difference]: Start difference. First operand 198 states and 221 transitions. Second operand 6 states. [2020-09-25 01:10:39,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:39,417 INFO L93 Difference]: Finished difference Result 374 states and 416 transitions. [2020-09-25 01:10:39,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 01:10:39,419 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-09-25 01:10:39,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:39,421 INFO L225 Difference]: With dead ends: 374 [2020-09-25 01:10:39,422 INFO L226 Difference]: Without dead ends: 265 [2020-09-25 01:10:39,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 01:10:39,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-09-25 01:10:39,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 202. [2020-09-25 01:10:39,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-25 01:10:39,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 224 transitions. [2020-09-25 01:10:39,442 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 224 transitions. Word has length 67 [2020-09-25 01:10:39,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:39,443 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 224 transitions. [2020-09-25 01:10:39,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:10:39,443 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 224 transitions. [2020-09-25 01:10:39,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 01:10:39,444 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:39,444 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 01:10:39,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 01:10:39,445 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:39,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:39,445 INFO L82 PathProgramCache]: Analyzing trace with hash -846336012, now seen corresponding path program 1 times [2020-09-25 01:10:39,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:39,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8587175] [2020-09-25 01:10:39,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:39,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:39,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:39,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:39,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:40,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:40,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:40,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:40,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:40,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 01:10:40,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 01:10:40,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1405 [2020-09-25 01:10:40,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:40,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:10:40,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 01:10:40,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 01:10:40,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:40,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:40,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:40,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:40,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:10:40,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:40,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:10:40,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:40,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:40,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:40,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:40,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:40,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 01:10:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:40,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:40,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:40,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 01:10:40,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:40,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:10:40,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:40,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:40,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 01:10:40,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:40,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:40,933 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 01:10:40,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8587175] [2020-09-25 01:10:40,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:10:40,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 01:10:40,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792704575] [2020-09-25 01:10:40,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:10:40,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:40,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:10:40,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:10:40,936 INFO L87 Difference]: Start difference. First operand 202 states and 224 transitions. Second operand 6 states. [2020-09-25 01:10:41,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:41,294 INFO L93 Difference]: Finished difference Result 343 states and 381 transitions. [2020-09-25 01:10:41,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:10:41,295 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-09-25 01:10:41,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:41,297 INFO L225 Difference]: With dead ends: 343 [2020-09-25 01:10:41,298 INFO L226 Difference]: Without dead ends: 246 [2020-09-25 01:10:41,298 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 01:10:41,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-09-25 01:10:41,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 196. [2020-09-25 01:10:41,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-09-25 01:10:41,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 217 transitions. [2020-09-25 01:10:41,306 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 217 transitions. Word has length 68 [2020-09-25 01:10:41,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:41,306 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 217 transitions. [2020-09-25 01:10:41,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:10:41,306 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 217 transitions. [2020-09-25 01:10:41,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 01:10:41,308 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:41,308 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 01:10:41,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 01:10:41,308 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:41,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:41,309 INFO L82 PathProgramCache]: Analyzing trace with hash 574058161, now seen corresponding path program 1 times [2020-09-25 01:10:41,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:41,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924969534] [2020-09-25 01:10:41,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:41,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:41,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:41,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:42,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:43,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:43,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 01:10:43,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:10:43,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1913 [2020-09-25 01:10:43,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:43,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:10:43,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 01:10:43,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 01:10:43,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:43,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:43,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:43,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:43,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:10:43,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:43,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:10:43,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:43,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:43,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:43,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 01:10:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:43,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:43,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:43,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 01:10:43,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:43,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:10:43,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:43,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:43,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 01:10:43,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:43,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:43,326 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 01:10:43,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924969534] [2020-09-25 01:10:43,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:10:43,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 01:10:43,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521866686] [2020-09-25 01:10:43,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 01:10:43,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:43,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 01:10:43,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 01:10:43,329 INFO L87 Difference]: Start difference. First operand 196 states and 217 transitions. Second operand 8 states. [2020-09-25 01:10:43,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:43,725 INFO L93 Difference]: Finished difference Result 482 states and 540 transitions. [2020-09-25 01:10:43,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 01:10:43,725 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-09-25 01:10:43,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:43,728 INFO L225 Difference]: With dead ends: 482 [2020-09-25 01:10:43,728 INFO L226 Difference]: Without dead ends: 322 [2020-09-25 01:10:43,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-09-25 01:10:43,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-09-25 01:10:43,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 243. [2020-09-25 01:10:43,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-09-25 01:10:43,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 267 transitions. [2020-09-25 01:10:43,739 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 267 transitions. Word has length 70 [2020-09-25 01:10:43,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:43,739 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 267 transitions. [2020-09-25 01:10:43,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 01:10:43,740 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 267 transitions. [2020-09-25 01:10:43,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 01:10:43,741 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:43,741 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 01:10:43,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 01:10:43,741 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:43,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:43,742 INFO L82 PathProgramCache]: Analyzing trace with hash 588909148, now seen corresponding path program 1 times [2020-09-25 01:10:43,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:43,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239555301] [2020-09-25 01:10:43,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:43,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:43,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:43,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:43,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:44,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:44,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:44,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:44,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:47,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:47,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:47,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:48,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:48,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:48,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:10:48,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 01:10:48,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 01:10:48,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:48,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 01:10:48,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 01:10:48,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 01:10:48,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:48,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:48,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:48,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:48,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:10:48,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:48,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:10:48,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:48,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:48,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:48,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:48,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:48,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 01:10:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:48,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:48,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:48,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 01:10:48,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:48,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 01:10:48,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:48,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:10:48,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:48,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 01:10:48,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:48,943 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 01:10:48,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239555301] [2020-09-25 01:10:48,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:10:48,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 01:10:48,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845780448] [2020-09-25 01:10:48,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 01:10:48,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:48,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 01:10:48,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-25 01:10:48,947 INFO L87 Difference]: Start difference. First operand 243 states and 267 transitions. Second operand 12 states. [2020-09-25 01:10:49,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:49,781 INFO L93 Difference]: Finished difference Result 358 states and 390 transitions. [2020-09-25 01:10:49,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 01:10:49,782 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-09-25 01:10:49,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:49,787 INFO L225 Difference]: With dead ends: 358 [2020-09-25 01:10:49,787 INFO L226 Difference]: Without dead ends: 356 [2020-09-25 01:10:49,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2020-09-25 01:10:49,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-09-25 01:10:49,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 261. [2020-09-25 01:10:49,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-09-25 01:10:49,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 288 transitions. [2020-09-25 01:10:49,798 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 288 transitions. Word has length 72 [2020-09-25 01:10:49,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:49,799 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 288 transitions. [2020-09-25 01:10:49,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 01:10:49,799 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 288 transitions. [2020-09-25 01:10:49,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 01:10:49,800 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:49,800 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 01:10:49,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 01:10:49,801 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:49,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:49,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1474625812, now seen corresponding path program 1 times [2020-09-25 01:10:49,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:49,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108295411] [2020-09-25 01:10:49,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:49,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:49,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:49,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:49,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:50,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:50,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:50,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:50,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:50,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:50,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:50,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:50,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:51,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:54,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:54,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 01:10:54,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 01:10:54,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 01:10:54,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:54,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 01:10:54,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 01:10:54,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 01:10:54,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:54,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:54,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:54,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:54,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:10:54,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:54,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:10:54,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:54,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:54,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:54,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:54,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:54,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 01:10:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:54,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:54,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:54,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 01:10:54,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:54,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 01:10:54,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:54,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:10:54,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:54,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 01:10:54,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:54,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:10:54,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108295411] [2020-09-25 01:10:54,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:10:54,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-25 01:10:54,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968210577] [2020-09-25 01:10:54,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 01:10:54,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:54,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 01:10:54,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-25 01:10:54,983 INFO L87 Difference]: Start difference. First operand 261 states and 288 transitions. Second operand 12 states. [2020-09-25 01:10:55,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:55,648 INFO L93 Difference]: Finished difference Result 531 states and 586 transitions. [2020-09-25 01:10:55,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 01:10:55,648 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 75 [2020-09-25 01:10:55,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:55,652 INFO L225 Difference]: With dead ends: 531 [2020-09-25 01:10:55,653 INFO L226 Difference]: Without dead ends: 416 [2020-09-25 01:10:55,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2020-09-25 01:10:55,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-09-25 01:10:55,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 270. [2020-09-25 01:10:55,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-09-25 01:10:55,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 298 transitions. [2020-09-25 01:10:55,673 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 298 transitions. Word has length 75 [2020-09-25 01:10:55,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:55,673 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 298 transitions. [2020-09-25 01:10:55,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 01:10:55,673 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 298 transitions. [2020-09-25 01:10:55,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 01:10:55,674 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:55,675 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:10:55,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 01:10:55,675 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:55,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:55,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1111268393, now seen corresponding path program 1 times [2020-09-25 01:10:55,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:55,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501221464] [2020-09-25 01:10:55,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:55,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:55,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:56,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking...