/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:22:34,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:22:34,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:22:34,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:22:34,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:22:34,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:22:34,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:22:34,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:22:34,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:22:34,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:22:34,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:22:34,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:22:34,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:22:34,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:22:34,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:22:34,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:22:34,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:22:34,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:22:34,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:22:34,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:22:34,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:22:34,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:22:34,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:22:34,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:22:34,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:22:34,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:22:34,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:22:34,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:22:34,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:22:34,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:22:34,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:22:34,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:22:34,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:22:34,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:22:34,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:22:34,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:22:34,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:22:34,120 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:22:34,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:22:34,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:22:34,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:22:34,123 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 13:22:34,161 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:22:34,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:22:34,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:22:34,163 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:22:34,164 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:22:34,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:22:34,164 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:22:34,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:22:34,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:22:34,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:22:34,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:22:34,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:22:34,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:22:34,166 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:22:34,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:22:34,166 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:22:34,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:22:34,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:22:34,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:22:34,167 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:22:34,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:22:34,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:22:34,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:22:34,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:22:34,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:22:34,169 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:22:34,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:22:34,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:22:34,169 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:22:34,170 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 13:22:34,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:22:34,517 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:22:34,524 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:22:34,527 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:22:34,529 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:22:34,530 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label23.c [2020-10-12 13:22:34,624 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8177a6862/3d2ffa96ff9b4d8a9d90270bc8c02a61/FLAG56ccd5414 [2020-10-12 13:22:35,512 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:22:35,513 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label23.c [2020-10-12 13:22:35,545 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8177a6862/3d2ffa96ff9b4d8a9d90270bc8c02a61/FLAG56ccd5414 [2020-10-12 13:22:36,027 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8177a6862/3d2ffa96ff9b4d8a9d90270bc8c02a61 [2020-10-12 13:22:36,038 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:22:36,041 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:22:36,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:22:36,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:22:36,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:22:36,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:22:36" (1/1) ... [2020-10-12 13:22:36,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39315203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:22:36, skipping insertion in model container [2020-10-12 13:22:36,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:22:36" (1/1) ... [2020-10-12 13:22:36,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:22:36,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:22:37,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:22:37,970 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:22:38,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:22:38,825 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:22:38,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:22:38 WrapperNode [2020-10-12 13:22:38,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:22:38,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:22:38,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:22:38,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:22:38,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:22:38" (1/1) ... [2020-10-12 13:22:38,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:22:38" (1/1) ... [2020-10-12 13:22:38,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:22:38" (1/1) ... [2020-10-12 13:22:38,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:22:38" (1/1) ... [2020-10-12 13:22:38,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:22:38" (1/1) ... [2020-10-12 13:22:39,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:22:38" (1/1) ... [2020-10-12 13:22:39,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:22:38" (1/1) ... [2020-10-12 13:22:39,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:22:39,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:22:39,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:22:39,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:22:39,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:22:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:22:39,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:22:39,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:22:39,144 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:22:39,144 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 13:22:39,144 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 13:22:39,144 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 13:22:39,144 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:22:39,145 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:22:39,145 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 13:22:39,145 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 13:22:39,145 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 13:22:39,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:22:39,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:22:39,146 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:22:39,146 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:22:39,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:22:39,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:22:44,131 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:22:44,132 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:22:44,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:22:44 BoogieIcfgContainer [2020-10-12 13:22:44,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:22:44,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:22:44,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:22:44,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:22:44,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:22:36" (1/3) ... [2020-10-12 13:22:44,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f97585d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:22:44, skipping insertion in model container [2020-10-12 13:22:44,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:22:38" (2/3) ... [2020-10-12 13:22:44,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f97585d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:22:44, skipping insertion in model container [2020-10-12 13:22:44,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:22:44" (3/3) ... [2020-10-12 13:22:44,163 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label23.c [2020-10-12 13:22:44,173 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:22:44,182 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:22:44,197 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:22:44,227 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:22:44,227 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:22:44,227 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:22:44,228 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:22:44,228 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:22:44,228 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:22:44,228 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:22:44,228 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:22:44,264 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-12 13:22:44,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 13:22:44,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:22:44,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:22:44,274 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:22:44,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:22:44,281 INFO L82 PathProgramCache]: Analyzing trace with hash -2070539302, now seen corresponding path program 1 times [2020-10-12 13:22:44,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:22:44,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509781150] [2020-10-12 13:22:44,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:22:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:44,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:44,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:44,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 13:22:44,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:44,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 437 [2020-10-12 13:22:44,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:44,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:22:44,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:22:44,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 13:22:44,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 13:22:45,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:22:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:45,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:45,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:45,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:22:45,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:45,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 13:22:45,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:45,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:22:45,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:22:45,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:22:45,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:45,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:22:45,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509781150] [2020-10-12 13:22:45,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:22:45,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 13:22:45,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525621712] [2020-10-12 13:22:45,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 13:22:45,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:22:45,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 13:22:45,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 13:22:45,123 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-12 13:22:54,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:22:54,937 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-12 13:22:54,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:22:54,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-12 13:22:54,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:22:55,006 INFO L225 Difference]: With dead ends: 2471 [2020-10-12 13:22:55,007 INFO L226 Difference]: Without dead ends: 1568 [2020-10-12 13:22:55,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:22:55,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-12 13:22:55,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-12 13:22:55,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-12 13:22:55,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2863 transitions. [2020-10-12 13:22:55,318 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2863 transitions. Word has length 41 [2020-10-12 13:22:55,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:22:55,319 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2863 transitions. [2020-10-12 13:22:55,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 13:22:55,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2863 transitions. [2020-10-12 13:22:55,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 13:22:55,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:22:55,327 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:22:55,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:22:55,328 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:22:55,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:22:55,329 INFO L82 PathProgramCache]: Analyzing trace with hash 119524935, now seen corresponding path program 1 times [2020-10-12 13:22:55,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:22:55,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099904328] [2020-10-12 13:22:55,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:22:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:55,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:55,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:56,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:56,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:56,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 13:22:56,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:22:56,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1157 [2020-10-12 13:22:56,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:56,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:22:56,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:22:56,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 13:22:56,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:22:56,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:22:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:56,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:56,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:56,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:22:56,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:56,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 13:22:56,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:56,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:22:56,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:22:56,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:22:56,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:22:56,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:22:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:56,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:56,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:56,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:56,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 13:22:56,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:22:56,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-12 13:22:56,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:22:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:22:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:22:56,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:22:56,997 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:22:56,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099904328] [2020-10-12 13:22:56,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:22:56,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:22:57,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225797084] [2020-10-12 13:22:57,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:22:57,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:22:57,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:22:57,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:22:57,005 INFO L87 Difference]: Start difference. First operand 1553 states and 2863 transitions. Second operand 7 states. [2020-10-12 13:23:08,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:23:08,701 INFO L93 Difference]: Finished difference Result 4714 states and 8764 transitions. [2020-10-12 13:23:08,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:23:08,707 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-10-12 13:23:08,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:23:08,726 INFO L225 Difference]: With dead ends: 4714 [2020-10-12 13:23:08,727 INFO L226 Difference]: Without dead ends: 3167 [2020-10-12 13:23:08,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:23:08,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3167 states. [2020-10-12 13:23:08,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3167 to 3114. [2020-10-12 13:23:08,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3114 states. [2020-10-12 13:23:08,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3114 states to 3114 states and 5586 transitions. [2020-10-12 13:23:08,829 INFO L78 Accepts]: Start accepts. Automaton has 3114 states and 5586 transitions. Word has length 110 [2020-10-12 13:23:08,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:23:08,830 INFO L479 AbstractCegarLoop]: Abstraction has 3114 states and 5586 transitions. [2020-10-12 13:23:08,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:23:08,830 INFO L276 IsEmpty]: Start isEmpty. Operand 3114 states and 5586 transitions. [2020-10-12 13:23:08,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 13:23:08,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:23:08,833 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:23:08,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:23:08,834 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:23:08,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:23:08,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1567221619, now seen corresponding path program 1 times [2020-10-12 13:23:08,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:23:08,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382073176] [2020-10-12 13:23:08,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:23:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:08,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:09,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:09,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 13:23:09,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:09,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-12 13:23:09,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:09,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:23:09,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 13:23:09,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 13:23:09,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:09,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:23:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:09,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:09,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:09,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:23:09,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:09,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:23:09,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:09,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:23:09,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:09,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:23:09,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:09,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:23:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:09,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:09,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:09,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:23:09,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:09,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 13:23:09,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:09,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:23:09,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:09,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:23:09,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:09,362 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:23:09,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382073176] [2020-10-12 13:23:09,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:23:09,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:23:09,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869500348] [2020-10-12 13:23:09,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:23:09,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:23:09,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:23:09,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:23:09,366 INFO L87 Difference]: Start difference. First operand 3114 states and 5586 transitions. Second operand 6 states. [2020-10-12 13:23:25,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:23:25,947 INFO L93 Difference]: Finished difference Result 12491 states and 22997 transitions. [2020-10-12 13:23:25,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:23:25,948 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2020-10-12 13:23:25,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:23:26,008 INFO L225 Difference]: With dead ends: 12491 [2020-10-12 13:23:26,008 INFO L226 Difference]: Without dead ends: 9383 [2020-10-12 13:23:26,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:23:26,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9383 states. [2020-10-12 13:23:26,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9383 to 9349. [2020-10-12 13:23:26,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9349 states. [2020-10-12 13:23:26,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9349 states to 9349 states and 14793 transitions. [2020-10-12 13:23:26,335 INFO L78 Accepts]: Start accepts. Automaton has 9349 states and 14793 transitions. Word has length 116 [2020-10-12 13:23:26,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:23:26,337 INFO L479 AbstractCegarLoop]: Abstraction has 9349 states and 14793 transitions. [2020-10-12 13:23:26,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:23:26,337 INFO L276 IsEmpty]: Start isEmpty. Operand 9349 states and 14793 transitions. [2020-10-12 13:23:26,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-12 13:23:26,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:23:26,358 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:23:26,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:23:26,358 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:23:26,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:23:26,359 INFO L82 PathProgramCache]: Analyzing trace with hash -502732398, now seen corresponding path program 1 times [2020-10-12 13:23:26,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:23:26,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638350665] [2020-10-12 13:23:26,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:23:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:26,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:26,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:27,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:30,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:30,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-12 13:23:30,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:23:30,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4399 [2020-10-12 13:23:30,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:30,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:23:30,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:23:30,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 13:23:30,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:30,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:23:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:30,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:30,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:30,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:23:30,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:30,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:23:30,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:30,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:23:30,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:30,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:23:30,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:30,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:23:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:31,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:31,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:31,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 13:23:31,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:31,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-12 13:23:31,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:31,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:23:31,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:23:31,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 13:23:31,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:31,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-12 13:23:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:31,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:31,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:31,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 13:23:31,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:31,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-12 13:23:31,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:31,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:23:31,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-12 13:23:31,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:23:31,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:31,410 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 68 proven. 79 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:23:31,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638350665] [2020-10-12 13:23:31,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:23:31,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:23:31,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64112616] [2020-10-12 13:23:31,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:23:31,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:23:31,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:23:31,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:23:31,413 INFO L87 Difference]: Start difference. First operand 9349 states and 14793 transitions. Second operand 7 states. [2020-10-12 13:23:43,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:23:43,860 INFO L93 Difference]: Finished difference Result 23619 states and 38405 transitions. [2020-10-12 13:23:43,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:23:43,862 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2020-10-12 13:23:43,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:23:43,954 INFO L225 Difference]: With dead ends: 23619 [2020-10-12 13:23:43,955 INFO L226 Difference]: Without dead ends: 14276 [2020-10-12 13:23:43,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:23:44,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14276 states. [2020-10-12 13:23:44,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14276 to 14145. [2020-10-12 13:23:44,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14145 states. [2020-10-12 13:23:44,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14145 states to 14145 states and 20999 transitions. [2020-10-12 13:23:44,622 INFO L78 Accepts]: Start accepts. Automaton has 14145 states and 20999 transitions. Word has length 233 [2020-10-12 13:23:44,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:23:44,624 INFO L479 AbstractCegarLoop]: Abstraction has 14145 states and 20999 transitions. [2020-10-12 13:23:44,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:23:44,624 INFO L276 IsEmpty]: Start isEmpty. Operand 14145 states and 20999 transitions. [2020-10-12 13:23:44,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-12 13:23:44,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:23:44,641 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:23:44,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:23:44,642 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:23:44,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:23:44,642 INFO L82 PathProgramCache]: Analyzing trace with hash -2098612857, now seen corresponding path program 1 times [2020-10-12 13:23:44,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:23:44,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017737714] [2020-10-12 13:23:44,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:23:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:44,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:44,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:45,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:46,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:49,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:49,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 352 [2020-10-12 13:23:49,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:23:49,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-12 13:23:49,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:49,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:23:49,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 13:23:49,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 13:23:49,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:49,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:23:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:49,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:49,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:49,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:23:49,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:49,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:23:49,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:49,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:23:49,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:49,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:23:49,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:49,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:23:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:49,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:49,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:49,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:23:49,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:49,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 13:23:49,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:49,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:23:49,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:49,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:23:49,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 13:23:49,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 13:23:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:49,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:50,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:50,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-12 13:23:50,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:50,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-12 13:23:50,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:50,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:23:50,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:23:50,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-12 13:23:50,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:50,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-12 13:23:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:50,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:50,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:50,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 13:23:50,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:50,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-12 13:23:50,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:50,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:23:50,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-12 13:23:50,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:23:50,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:50,459 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 178 proven. 107 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-12 13:23:50,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017737714] [2020-10-12 13:23:50,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:23:50,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:23:50,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929576881] [2020-10-12 13:23:50,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:23:50,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:23:50,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:23:50,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:23:50,463 INFO L87 Difference]: Start difference. First operand 14145 states and 20999 transitions. Second operand 7 states. [2020-10-12 13:24:04,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:24:04,875 INFO L93 Difference]: Finished difference Result 28594 states and 43160 transitions. [2020-10-12 13:24:04,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:24:04,877 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 338 [2020-10-12 13:24:04,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:24:04,938 INFO L225 Difference]: With dead ends: 28594 [2020-10-12 13:24:04,939 INFO L226 Difference]: Without dead ends: 14455 [2020-10-12 13:24:04,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:24:04,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14455 states. [2020-10-12 13:24:05,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14455 to 14257. [2020-10-12 13:24:05,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14257 states. [2020-10-12 13:24:05,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14257 states to 14257 states and 18483 transitions. [2020-10-12 13:24:05,336 INFO L78 Accepts]: Start accepts. Automaton has 14257 states and 18483 transitions. Word has length 338 [2020-10-12 13:24:05,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:24:05,337 INFO L479 AbstractCegarLoop]: Abstraction has 14257 states and 18483 transitions. [2020-10-12 13:24:05,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:24:05,338 INFO L276 IsEmpty]: Start isEmpty. Operand 14257 states and 18483 transitions. [2020-10-12 13:24:05,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-12 13:24:05,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:24:05,359 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:24:05,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:24:05,359 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:24:05,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:24:05,360 INFO L82 PathProgramCache]: Analyzing trace with hash 2091657722, now seen corresponding path program 1 times [2020-10-12 13:24:05,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:24:05,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998398359] [2020-10-12 13:24:05,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:24:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:05,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:05,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:05,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:09,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:10,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:10,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-12 13:24:10,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:24:10,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 13:24:10,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:10,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:24:10,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:24:10,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 13:24:10,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:10,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:24:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:10,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:10,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:10,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:24:10,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:10,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:24:10,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:10,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:24:10,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:24:10,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:24:10,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:24:10,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:24:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:10,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:10,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:10,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 13:24:10,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:10,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-12 13:24:10,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:10,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:24:10,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:24:10,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 13:24:10,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:10,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-12 13:24:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:10,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:10,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:10,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:24:10,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:10,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-12 13:24:10,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:10,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:24:10,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-12 13:24:10,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:24:10,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:11,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-12 13:24:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:11,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:11,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:11,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 13:24:11,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:11,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 13:24:11,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:11,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:24:11,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-12 13:24:11,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:24:11,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:11,292 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 102 proven. 144 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-12 13:24:11,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998398359] [2020-10-12 13:24:11,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:24:11,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:24:11,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182120670] [2020-10-12 13:24:11,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:24:11,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:24:11,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:24:11,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:24:11,296 INFO L87 Difference]: Start difference. First operand 14257 states and 18483 transitions. Second operand 7 states. [2020-10-12 13:24:28,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:24:28,064 INFO L93 Difference]: Finished difference Result 42257 states and 56565 transitions. [2020-10-12 13:24:28,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:24:28,066 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 357 [2020-10-12 13:24:28,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:24:28,165 INFO L225 Difference]: With dead ends: 42257 [2020-10-12 13:24:28,166 INFO L226 Difference]: Without dead ends: 24053 [2020-10-12 13:24:28,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:24:28,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24053 states. [2020-10-12 13:24:28,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24053 to 21571. [2020-10-12 13:24:28,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21571 states. [2020-10-12 13:24:28,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21571 states to 21571 states and 27122 transitions. [2020-10-12 13:24:28,809 INFO L78 Accepts]: Start accepts. Automaton has 21571 states and 27122 transitions. Word has length 357 [2020-10-12 13:24:28,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:24:28,810 INFO L479 AbstractCegarLoop]: Abstraction has 21571 states and 27122 transitions. [2020-10-12 13:24:28,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:24:28,810 INFO L276 IsEmpty]: Start isEmpty. Operand 21571 states and 27122 transitions. [2020-10-12 13:24:28,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-12 13:24:28,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:24:28,839 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:24:28,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:24:28,839 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:24:28,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:24:28,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1214969558, now seen corresponding path program 1 times [2020-10-12 13:24:28,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:24:28,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707069764] [2020-10-12 13:24:28,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:24:28,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:28,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:29,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:30,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:31,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:31,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:33,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:33,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 413 [2020-10-12 13:24:33,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:24:33,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-12 13:24:33,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:33,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:24:33,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:24:33,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-12 13:24:33,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:34,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:24:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:34,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:34,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:34,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:24:34,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:34,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 13:24:34,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:34,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:24:34,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:24:34,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:24:34,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:24:34,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:24:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:34,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:34,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:34,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:34,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 13:24:34,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:24:34,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-12 13:24:34,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:34,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:24:34,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:24:34,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 13:24:34,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:34,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 13:24:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:34,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:34,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:34,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-12 13:24:34,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:34,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-12 13:24:34,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:34,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:24:34,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:24:34,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-12 13:24:34,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:34,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-12 13:24:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:34,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:35,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:35,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 13:24:35,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:35,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-12 13:24:35,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:35,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:24:35,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-12 13:24:35,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:24:35,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:24:35,261 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 183 proven. 186 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 13:24:35,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707069764] [2020-10-12 13:24:35,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:24:35,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 13:24:35,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709986466] [2020-10-12 13:24:35,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 13:24:35,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:24:35,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 13:24:35,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:24:35,266 INFO L87 Difference]: Start difference. First operand 21571 states and 27122 transitions. Second operand 9 states. [2020-10-12 13:24:39,799 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-10-12 13:24:51,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:24:51,890 INFO L93 Difference]: Finished difference Result 43744 states and 55924 transitions. [2020-10-12 13:24:51,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 13:24:51,892 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 399 [2020-10-12 13:24:51,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:24:51,982 INFO L225 Difference]: With dead ends: 43744 [2020-10-12 13:24:51,982 INFO L226 Difference]: Without dead ends: 22179 [2020-10-12 13:24:52,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-12 13:24:52,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22179 states. [2020-10-12 13:24:52,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22179 to 21917. [2020-10-12 13:24:52,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21917 states. [2020-10-12 13:24:52,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21917 states to 21917 states and 26126 transitions. [2020-10-12 13:24:52,819 INFO L78 Accepts]: Start accepts. Automaton has 21917 states and 26126 transitions. Word has length 399 [2020-10-12 13:24:52,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:24:52,820 INFO L479 AbstractCegarLoop]: Abstraction has 21917 states and 26126 transitions. [2020-10-12 13:24:52,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 13:24:52,820 INFO L276 IsEmpty]: Start isEmpty. Operand 21917 states and 26126 transitions. [2020-10-12 13:24:52,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-10-12 13:24:52,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:24:52,852 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 13:24:52,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:24:52,853 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:24:52,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:24:52,854 INFO L82 PathProgramCache]: Analyzing trace with hash 793154030, now seen corresponding path program 1 times [2020-10-12 13:24:52,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:24:52,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327295888] [2020-10-12 13:24:52,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:24:52,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:52,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:53,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:54,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:54,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:57,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:57,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 433 [2020-10-12 13:24:57,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:24:57,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-12 13:24:57,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:57,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:24:57,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:24:57,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-12 13:24:57,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:58,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:24:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:58,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:58,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:58,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:24:58,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:58,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:24:58,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:58,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:24:58,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:24:58,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:24:58,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:58,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:24:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:58,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:58,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:58,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 13:24:58,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:58,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-12 13:24:58,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:58,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:24:58,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:24:58,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-12 13:24:58,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:58,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-12 13:24:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:58,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:58,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:58,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-12 13:24:58,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:58,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-12 13:24:58,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:58,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:24:58,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-10-12 13:24:58,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:24:58,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:58,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-12 13:24:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:58,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:58,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:58,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 13:24:58,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:58,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 13:24:58,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:58,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:24:58,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-12 13:24:58,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:24:58,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:58,677 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 102 proven. 196 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-12 13:24:58,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327295888] [2020-10-12 13:24:58,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:24:58,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:24:58,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062273409] [2020-10-12 13:24:58,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:24:58,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:24:58,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:24:58,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:24:58,681 INFO L87 Difference]: Start difference. First operand 21917 states and 26126 transitions. Second operand 7 states. [2020-10-12 13:25:15,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:25:15,215 INFO L93 Difference]: Finished difference Result 45818 states and 58847 transitions. [2020-10-12 13:25:15,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:25:15,218 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 419 [2020-10-12 13:25:15,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:25:15,322 INFO L225 Difference]: With dead ends: 45818 [2020-10-12 13:25:15,322 INFO L226 Difference]: Without dead ends: 23907 [2020-10-12 13:25:15,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:25:15,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23907 states. [2020-10-12 13:25:16,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23907 to 22976. [2020-10-12 13:25:16,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22976 states. [2020-10-12 13:25:16,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22976 states to 22976 states and 27390 transitions. [2020-10-12 13:25:16,096 INFO L78 Accepts]: Start accepts. Automaton has 22976 states and 27390 transitions. Word has length 419 [2020-10-12 13:25:16,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:25:16,097 INFO L479 AbstractCegarLoop]: Abstraction has 22976 states and 27390 transitions. [2020-10-12 13:25:16,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:25:16,097 INFO L276 IsEmpty]: Start isEmpty. Operand 22976 states and 27390 transitions. [2020-10-12 13:25:16,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2020-10-12 13:25:16,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:25:16,122 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:25:16,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 13:25:16,122 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:25:16,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:25:16,123 INFO L82 PathProgramCache]: Analyzing trace with hash 464482971, now seen corresponding path program 1 times [2020-10-12 13:25:16,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:25:16,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054458244] [2020-10-12 13:25:16,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:25:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:25:16,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:16,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:17,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:17,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:21,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:25:21,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 478 [2020-10-12 13:25:21,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:25:21,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 13:25:21,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:25:21,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:25:21,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:25:21,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-12 13:25:21,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:25:21,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:25:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:25:21,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:21,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:25:21,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:25:21,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:25:21,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:25:21,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:25:21,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:25:21,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:25:21,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:25:21,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:25:21,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:25:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:25:21,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:21,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:25:21,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 13:25:21,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:25:21,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-12 13:25:21,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:25:21,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:25:21,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:25:21,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 13:25:21,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:25:21,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-12 13:25:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:25:21,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:21,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:25:21,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-12 13:25:21,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:25:21,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 13:25:21,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:25:21,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:25:21,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-10-12 13:25:21,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:25:21,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:25:21,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-10-12 13:25:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:25:21,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:21,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:25:21,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 13:25:21,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:25:21,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 13:25:21,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:25:21,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:25:21,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-12 13:25:21,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:25:21,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:25:22,304 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 102 proven. 246 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-12 13:25:22,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054458244] [2020-10-12 13:25:22,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:25:22,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:25:22,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470927855] [2020-10-12 13:25:22,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:25:22,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:25:22,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:25:22,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:25:22,307 INFO L87 Difference]: Start difference. First operand 22976 states and 27390 transitions. Second operand 7 states. [2020-10-12 13:25:41,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:25:41,338 INFO L93 Difference]: Finished difference Result 51114 states and 61924 transitions. [2020-10-12 13:25:41,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 13:25:41,340 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 464 [2020-10-12 13:25:41,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:25:41,430 INFO L225 Difference]: With dead ends: 51114 [2020-10-12 13:25:41,431 INFO L226 Difference]: Without dead ends: 28911 [2020-10-12 13:25:41,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-12 13:25:41,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28911 states. [2020-10-12 13:25:42,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28911 to 28590. [2020-10-12 13:25:42,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28590 states. [2020-10-12 13:25:42,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28590 states to 28590 states and 33637 transitions. [2020-10-12 13:25:42,489 INFO L78 Accepts]: Start accepts. Automaton has 28590 states and 33637 transitions. Word has length 464 [2020-10-12 13:25:42,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:25:42,490 INFO L479 AbstractCegarLoop]: Abstraction has 28590 states and 33637 transitions. [2020-10-12 13:25:42,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:25:42,490 INFO L276 IsEmpty]: Start isEmpty. Operand 28590 states and 33637 transitions. [2020-10-12 13:25:42,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2020-10-12 13:25:42,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:25:42,514 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:25:42,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 13:25:42,514 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:25:42,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:25:42,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1641067158, now seen corresponding path program 1 times [2020-10-12 13:25:42,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:25:42,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365696574] [2020-10-12 13:25:42,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:25:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:25:42,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:42,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:42,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:45,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:45,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:45,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:47,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:25:47,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 517 [2020-10-12 13:25:47,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 13:25:47,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-12 13:25:47,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:25:47,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 13:25:47,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:25:47,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 362 [2020-10-12 13:25:47,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:25:47,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:25:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:25:47,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:47,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:25:47,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:25:47,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:25:47,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:25:47,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:25:47,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:25:47,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:25:47,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:25:47,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:25:47,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:25:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:25:47,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:47,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:48,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:25:48,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 13:25:48,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:25:48,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-12 13:25:48,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:25:48,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:25:48,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:25:48,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-12 13:25:48,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:25:48,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 13:25:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:25:48,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:48,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:48,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:25:48,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 13:25:48,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:25:48,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-12 13:25:48,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:25:48,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:25:48,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:25:48,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 13:25:48,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:25:48,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-12 13:25:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:25:48,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:48,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:25:48,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-12 13:25:48,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:25:48,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-12 13:25:48,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:25:48,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:25:48,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:25:48,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-12 13:25:48,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:25:48,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-10-12 13:25:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:25:48,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:49,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:25:49,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 13:25:49,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:25:49,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 13:25:49,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:25:49,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:25:49,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-12 13:25:49,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:25:49,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:25:49,579 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 185 proven. 535 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 13:25:49,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365696574] [2020-10-12 13:25:49,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:25:49,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 13:25:49,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203422789] [2020-10-12 13:25:49,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 13:25:49,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:25:49,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 13:25:49,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:25:49,583 INFO L87 Difference]: Start difference. First operand 28590 states and 33637 transitions. Second operand 11 states. [2020-10-12 13:26:01,630 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26