/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=NARROWEST --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/Problem17_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:30:07,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:30:07,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:30:07,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:30:07,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:30:08,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:30:08,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:30:08,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:30:08,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:30:08,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:30:08,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:30:08,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:30:08,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:30:08,031 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:30:08,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:30:08,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:30:08,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:30:08,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:30:08,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:30:08,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:30:08,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:30:08,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:30:08,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:30:08,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:30:08,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:30:08,081 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:30:08,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:30:08,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:30:08,083 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:30:08,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:30:08,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:30:08,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:30:08,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:30:08,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:30:08,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:30:08,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:30:08,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:30:08,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:30:08,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:30:08,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:30:08,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:30:08,102 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 [2020-10-13 09:30:08,150 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:30:08,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:30:08,154 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:30:08,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:30:08,154 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:30:08,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:30:08,155 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:30:08,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:30:08,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:30:08,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:30:08,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:30:08,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:30:08,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:30:08,158 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:30:08,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:30:08,158 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:30:08,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:30:08,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:30:08,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:30:08,159 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:30:08,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:30:08,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:30:08,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:30:08,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:30:08,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:30:08,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:30:08,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:30:08,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:30:08,162 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:30:08,163 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:30:08,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:30:08,559 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:30:08,567 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:30:08,569 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:30:08,570 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:30:08,571 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label16.c [2020-10-13 09:30:08,646 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d9492f41/02a06e79208540c6a00293484147bf41/FLAG98965a20d [2020-10-13 09:30:09,544 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:30:09,545 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label16.c [2020-10-13 09:30:09,584 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d9492f41/02a06e79208540c6a00293484147bf41/FLAG98965a20d [2020-10-13 09:30:10,021 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d9492f41/02a06e79208540c6a00293484147bf41 [2020-10-13 09:30:10,035 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:30:10,038 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:30:10,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:30:10,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:30:10,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:30:10,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:30:10" (1/1) ... [2020-10-13 09:30:10,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c1ac066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:10, skipping insertion in model container [2020-10-13 09:30:10,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:30:10" (1/1) ... [2020-10-13 09:30:10,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:30:10,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:30:11,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:30:11,664 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:30:12,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:30:12,154 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:30:12,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:12 WrapperNode [2020-10-13 09:30:12,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:30:12,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:30:12,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:30:12,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:30:12,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:12" (1/1) ... [2020-10-13 09:30:12,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:12" (1/1) ... [2020-10-13 09:30:12,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:12" (1/1) ... [2020-10-13 09:30:12,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:12" (1/1) ... [2020-10-13 09:30:12,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:12" (1/1) ... [2020-10-13 09:30:12,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:12" (1/1) ... [2020-10-13 09:30:12,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:12" (1/1) ... [2020-10-13 09:30:12,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:30:12,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:30:12,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:30:12,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:30:12,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:12" (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 [2020-10-13 09:30:12,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:30:12,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:30:12,510 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:30:12,510 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:30:12,510 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:30:12,510 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:30:12,510 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:30:12,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:30:12,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:30:12,511 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:30:12,511 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:30:12,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:30:12,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:30:21,857 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:30:21,858 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:30:21,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:30:21 BoogieIcfgContainer [2020-10-13 09:30:21,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:30:21,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:30:21,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:30:21,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:30:21,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:30:10" (1/3) ... [2020-10-13 09:30:21,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3edfbbe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:30:21, skipping insertion in model container [2020-10-13 09:30:21,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:12" (2/3) ... [2020-10-13 09:30:21,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3edfbbe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:30:21, skipping insertion in model container [2020-10-13 09:30:21,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:30:21" (3/3) ... [2020-10-13 09:30:21,902 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label16.c [2020-10-13 09:30:21,916 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:30:21,933 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:30:21,953 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:30:21,998 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:30:21,999 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:30:21,999 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:30:21,999 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:30:21,999 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:30:21,999 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:30:21,999 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:30:22,000 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:30:22,063 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-13 09:30:22,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 09:30:22,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:30:22,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:30:22,084 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:30:22,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:30:22,096 INFO L82 PathProgramCache]: Analyzing trace with hash 736430857, now seen corresponding path program 1 times [2020-10-13 09:30:22,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:30:22,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648169555] [2020-10-13 09:30:22,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:30:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:22,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:23,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:23,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 09:30:23,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:23,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 566 [2020-10-13 09:30:23,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:23,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:30:23,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:30:23,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 09:30:23,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 09:30:23,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:30:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:23,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:23,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:23,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:30:23,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:23,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:30:23,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:23,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:30:23,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:23,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:30:23,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:30:23,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:30:23,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648169555] [2020-10-13 09:30:23,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:30:23,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:30:23,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750701085] [2020-10-13 09:30:23,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:30:23,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:30:23,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:30:23,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:30:23,330 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-13 09:30:36,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:30:36,747 INFO L93 Difference]: Finished difference Result 1689 states and 3086 transitions. [2020-10-13 09:30:36,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:30:36,753 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-13 09:30:36,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:30:36,789 INFO L225 Difference]: With dead ends: 1689 [2020-10-13 09:30:36,790 INFO L226 Difference]: Without dead ends: 1009 [2020-10-13 09:30:36,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:30:36,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-13 09:30:36,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 991. [2020-10-13 09:30:36,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-10-13 09:30:36,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1526 transitions. [2020-10-13 09:30:36,945 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1526 transitions. Word has length 31 [2020-10-13 09:30:36,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:30:36,946 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1526 transitions. [2020-10-13 09:30:36,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:30:36,947 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1526 transitions. [2020-10-13 09:30:36,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 09:30:36,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:30:36,956 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:30:36,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:30:36,957 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:30:36,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:30:36,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1876242177, now seen corresponding path program 1 times [2020-10-13 09:30:36,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:30:36,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079772899] [2020-10-13 09:30:36,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:30:37,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:37,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:37,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:38,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:38,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:38,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:30:38,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:30:38,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1541 [2020-10-13 09:30:38,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:38,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:30:38,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 09:30:38,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 09:30:38,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:30:38,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:30:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:38,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:38,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:38,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:30:38,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:38,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:30:38,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:38,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:30:38,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:38,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:30:38,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:30:38,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:30:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:38,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:38,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:38,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:30:38,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:38,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-13 09:30:38,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:38,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:30:38,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:38,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:30:38,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-13 09:30:39,072 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:30:39,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079772899] [2020-10-13 09:30:39,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:30:39,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:30:39,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685597070] [2020-10-13 09:30:39,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:30:39,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:30:39,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:30:39,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:30:39,080 INFO L87 Difference]: Start difference. First operand 991 states and 1526 transitions. Second operand 5 states. [2020-10-13 09:30:51,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:30:51,046 INFO L93 Difference]: Finished difference Result 2899 states and 4501 transitions. [2020-10-13 09:30:51,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:30:51,048 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 09:30:51,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:30:51,060 INFO L225 Difference]: With dead ends: 2899 [2020-10-13 09:30:51,060 INFO L226 Difference]: Without dead ends: 1914 [2020-10-13 09:30:51,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:30:51,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2020-10-13 09:30:51,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1889. [2020-10-13 09:30:51,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1889 states. [2020-10-13 09:30:51,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2683 transitions. [2020-10-13 09:30:51,123 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2683 transitions. Word has length 102 [2020-10-13 09:30:51,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:30:51,125 INFO L479 AbstractCegarLoop]: Abstraction has 1889 states and 2683 transitions. [2020-10-13 09:30:51,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:30:51,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2683 transitions. [2020-10-13 09:30:51,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 09:30:51,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:30:51,129 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:30:51,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:30:51,130 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:30:51,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:30:51,130 INFO L82 PathProgramCache]: Analyzing trace with hash -368469103, now seen corresponding path program 1 times [2020-10-13 09:30:51,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:30:51,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724376147] [2020-10-13 09:30:51,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:30:51,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:51,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:51,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:51,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 09:30:51,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:51,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 454 [2020-10-13 09:30:51,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:51,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 09:30:51,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:30:51,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-13 09:30:51,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:51,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:30:51,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:51,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:51,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:51,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:30:51,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:51,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:30:51,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:51,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:30:51,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:51,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:30:51,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:51,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:30:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:51,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:52,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:52,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:30:52,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:52,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-13 09:30:52,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:52,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:30:52,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:30:52,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:30:52,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:52,448 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:30:52,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724376147] [2020-10-13 09:30:52,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:30:52,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:30:52,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336285963] [2020-10-13 09:30:52,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:30:52,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:30:52,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:30:52,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:30:52,452 INFO L87 Difference]: Start difference. First operand 1889 states and 2683 transitions. Second operand 8 states. [2020-10-13 09:31:10,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:31:10,479 INFO L93 Difference]: Finished difference Result 5660 states and 8141 transitions. [2020-10-13 09:31:10,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 09:31:10,480 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 105 [2020-10-13 09:31:10,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:31:10,504 INFO L225 Difference]: With dead ends: 5660 [2020-10-13 09:31:10,504 INFO L226 Difference]: Without dead ends: 3777 [2020-10-13 09:31:10,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-13 09:31:10,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3777 states. [2020-10-13 09:31:10,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3777 to 3718. [2020-10-13 09:31:10,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3718 states. [2020-10-13 09:31:10,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3718 states to 3718 states and 5045 transitions. [2020-10-13 09:31:10,616 INFO L78 Accepts]: Start accepts. Automaton has 3718 states and 5045 transitions. Word has length 105 [2020-10-13 09:31:10,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:31:10,617 INFO L479 AbstractCegarLoop]: Abstraction has 3718 states and 5045 transitions. [2020-10-13 09:31:10,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:31:10,617 INFO L276 IsEmpty]: Start isEmpty. Operand 3718 states and 5045 transitions. [2020-10-13 09:31:10,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 09:31:10,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:31:10,620 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:31:10,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:31:10,621 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:31:10,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:31:10,621 INFO L82 PathProgramCache]: Analyzing trace with hash 269805784, now seen corresponding path program 1 times [2020-10-13 09:31:10,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:31:10,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825359428] [2020-10-13 09:31:10,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:31:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:10,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:11,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:12,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:12,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 09:31:12,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:31:12,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1380 [2020-10-13 09:31:12,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:12,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:31:12,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 09:31:12,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 09:31:12,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:31:12,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:31:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:12,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:12,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:12,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:31:12,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:12,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:31:12,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:12,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:31:12,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:12,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:31:12,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:31:12,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:31:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:12,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:12,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:12,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:31:12,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:12,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-13 09:31:12,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:12,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:31:12,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:12,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 09:31:12,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:12,390 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:31:12,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825359428] [2020-10-13 09:31:12,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:31:12,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:31:12,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156297927] [2020-10-13 09:31:12,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:31:12,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:31:12,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:31:12,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:31:12,395 INFO L87 Difference]: Start difference. First operand 3718 states and 5045 transitions. Second operand 5 states. [2020-10-13 09:31:29,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:31:29,311 INFO L93 Difference]: Finished difference Result 8812 states and 12558 transitions. [2020-10-13 09:31:29,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:31:29,313 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-13 09:31:29,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:31:29,352 INFO L225 Difference]: With dead ends: 8812 [2020-10-13 09:31:29,352 INFO L226 Difference]: Without dead ends: 5971 [2020-10-13 09:31:29,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:31:29,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5971 states. [2020-10-13 09:31:29,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5971 to 5957. [2020-10-13 09:31:29,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5957 states. [2020-10-13 09:31:29,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5957 states to 5957 states and 7861 transitions. [2020-10-13 09:31:29,690 INFO L78 Accepts]: Start accepts. Automaton has 5957 states and 7861 transitions. Word has length 121 [2020-10-13 09:31:29,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:31:29,690 INFO L479 AbstractCegarLoop]: Abstraction has 5957 states and 7861 transitions. [2020-10-13 09:31:29,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:31:29,691 INFO L276 IsEmpty]: Start isEmpty. Operand 5957 states and 7861 transitions. [2020-10-13 09:31:29,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 09:31:29,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:31:29,697 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:31:29,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:31:29,698 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:31:29,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:31:29,698 INFO L82 PathProgramCache]: Analyzing trace with hash 530099091, now seen corresponding path program 1 times [2020-10-13 09:31:29,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:31:29,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593496588] [2020-10-13 09:31:29,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:31:29,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:29,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:29,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:30,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:30,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 09:31:30,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:31:30,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 746 [2020-10-13 09:31:30,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:30,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:31:30,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-13 09:31:30,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 09:31:30,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:30,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:31:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:30,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:30,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:30,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:31:30,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:30,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:31:30,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:30,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:31:30,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:30,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:31:30,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:30,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:31:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:30,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:30,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:30,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 09:31:30,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:30,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 09:31:30,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:30,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:31:30,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:30,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 09:31:30,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:30,773 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:31:30,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593496588] [2020-10-13 09:31:30,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:31:30,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:31:30,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289504302] [2020-10-13 09:31:30,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:31:30,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:31:30,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:31:30,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:31:30,776 INFO L87 Difference]: Start difference. First operand 5957 states and 7861 transitions. Second operand 5 states. [2020-10-13 09:31:47,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:31:47,014 INFO L93 Difference]: Finished difference Result 13280 states and 18422 transitions. [2020-10-13 09:31:47,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:31:47,020 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-13 09:31:47,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:31:47,075 INFO L225 Difference]: With dead ends: 13280 [2020-10-13 09:31:47,075 INFO L226 Difference]: Without dead ends: 9540 [2020-10-13 09:31:47,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:31:47,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9540 states. [2020-10-13 09:31:47,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9540 to 9509. [2020-10-13 09:31:47,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9509 states. [2020-10-13 09:31:47,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9509 states to 9509 states and 12416 transitions. [2020-10-13 09:31:47,407 INFO L78 Accepts]: Start accepts. Automaton has 9509 states and 12416 transitions. Word has length 128 [2020-10-13 09:31:47,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:31:47,408 INFO L479 AbstractCegarLoop]: Abstraction has 9509 states and 12416 transitions. [2020-10-13 09:31:47,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:31:47,408 INFO L276 IsEmpty]: Start isEmpty. Operand 9509 states and 12416 transitions. [2020-10-13 09:31:47,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-13 09:31:47,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:31:47,411 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, 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] [2020-10-13 09:31:47,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:31:47,412 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:31:47,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:31:47,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1504631663, now seen corresponding path program 1 times [2020-10-13 09:31:47,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:31:47,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149471791] [2020-10-13 09:31:47,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:31:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:47,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:47,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:47,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:48,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:52,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:52,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:52,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-13 09:31:52,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:31:52,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 09:31:52,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:52,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:31:52,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-13 09:31:52,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 09:31:52,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:52,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:31:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:52,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:52,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:52,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:31:52,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:52,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:31:52,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:52,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:31:52,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:52,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:31:52,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:52,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:31:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:52,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:52,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:52,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:31:52,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:52,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 09:31:52,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:52,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:31:52,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:52,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:31:52,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:52,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 09:31:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:52,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:52,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:52,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:31:52,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:52,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-13 09:31:52,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:52,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:31:52,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:52,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:31:52,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:52,799 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-13 09:31:52,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149471791] [2020-10-13 09:31:52,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:31:52,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:31:52,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651089537] [2020-10-13 09:31:52,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:31:52,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:31:52,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:31:52,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:31:52,802 INFO L87 Difference]: Start difference. First operand 9509 states and 12416 transitions. Second operand 5 states. [2020-10-13 09:32:09,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:32:09,284 INFO L93 Difference]: Finished difference Result 23001 states and 31046 transitions. [2020-10-13 09:32:09,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:32:09,286 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-10-13 09:32:09,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:32:09,359 INFO L225 Difference]: With dead ends: 23001 [2020-10-13 09:32:09,360 INFO L226 Difference]: Without dead ends: 13931 [2020-10-13 09:32:09,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:32:09,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13931 states. [2020-10-13 09:32:09,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13931 to 13928. [2020-10-13 09:32:09,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13928 states. [2020-10-13 09:32:09,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13928 states to 13928 states and 18201 transitions. [2020-10-13 09:32:09,701 INFO L78 Accepts]: Start accepts. Automaton has 13928 states and 18201 transitions. Word has length 175 [2020-10-13 09:32:09,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:32:09,702 INFO L479 AbstractCegarLoop]: Abstraction has 13928 states and 18201 transitions. [2020-10-13 09:32:09,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:32:09,702 INFO L276 IsEmpty]: Start isEmpty. Operand 13928 states and 18201 transitions. [2020-10-13 09:32:09,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 09:32:09,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:32:09,707 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, 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] [2020-10-13 09:32:09,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:32:09,708 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:32:09,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:32:09,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1871015169, now seen corresponding path program 1 times [2020-10-13 09:32:09,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:32:09,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558037332] [2020-10-13 09:32:09,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:32:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:09,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:09,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:10,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:10,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:13,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:13,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:14,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:14,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 09:32:14,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:32:14,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 09:32:14,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:14,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:32:14,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-10-13 09:32:14,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:32:14,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:32:14,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:32:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:14,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:14,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:14,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:32:14,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:14,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:32:14,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:14,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:32:14,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:14,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:32:14,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:14,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:32:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:14,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:15,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:15,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:32:15,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:15,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:32:15,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:15,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:32:15,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:15,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:32:15,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:32:15,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 09:32:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:15,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:15,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:15,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:32:15,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:15,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 09:32:15,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:15,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:32:15,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:15,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:32:15,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:15,219 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 09:32:15,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558037332] [2020-10-13 09:32:15,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:32:15,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:32:15,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307853781] [2020-10-13 09:32:15,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:32:15,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:32:15,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:32:15,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:32:15,225 INFO L87 Difference]: Start difference. First operand 13928 states and 18201 transitions. Second operand 5 states. [2020-10-13 09:32:29,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:32:29,505 INFO L93 Difference]: Finished difference Result 22136 states and 29343 transitions. [2020-10-13 09:32:29,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:32:29,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-10-13 09:32:29,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:32:29,569 INFO L225 Difference]: With dead ends: 22136 [2020-10-13 09:32:29,570 INFO L226 Difference]: Without dead ends: 13931 [2020-10-13 09:32:29,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:32:29,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13931 states. [2020-10-13 09:32:29,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13931 to 13928. [2020-10-13 09:32:29,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13928 states. [2020-10-13 09:32:29,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13928 states to 13928 states and 18193 transitions. [2020-10-13 09:32:29,900 INFO L78 Accepts]: Start accepts. Automaton has 13928 states and 18193 transitions. Word has length 180 [2020-10-13 09:32:29,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:32:29,901 INFO L479 AbstractCegarLoop]: Abstraction has 13928 states and 18193 transitions. [2020-10-13 09:32:29,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:32:29,901 INFO L276 IsEmpty]: Start isEmpty. Operand 13928 states and 18193 transitions. [2020-10-13 09:32:29,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-13 09:32:29,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:32:29,906 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, 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] [2020-10-13 09:32:29,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:32:29,907 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:32:29,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:32:29,907 INFO L82 PathProgramCache]: Analyzing trace with hash -415150457, now seen corresponding path program 1 times [2020-10-13 09:32:29,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:32:29,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604351595] [2020-10-13 09:32:29,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:32:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:30,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:30,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:30,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:31,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:33,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:34,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:34,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:32:34,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:32:34,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 09:32:34,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:34,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:32:34,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-10-13 09:32:34,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 09:32:34,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:35,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:32:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:35,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:35,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:35,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:32:35,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:35,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:32:35,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:35,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:32:35,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:35,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:32:35,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:32:35,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:32:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:35,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:35,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:35,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:32:35,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:35,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:32:35,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:35,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:32:35,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:35,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:32:35,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:32:35,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 09:32:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:35,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:35,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:35,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:32:35,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:35,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 09:32:35,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:35,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:32:35,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:35,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:32:35,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:32:35,385 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 09:32:35,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604351595] [2020-10-13 09:32:35,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:32:35,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:32:35,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368767574] [2020-10-13 09:32:35,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:32:35,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:32:35,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:32:35,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:32:35,390 INFO L87 Difference]: Start difference. First operand 13928 states and 18193 transitions. Second operand 5 states. [2020-10-13 09:32:52,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:32:52,664 INFO L93 Difference]: Finished difference Result 30105 states and 40890 transitions. [2020-10-13 09:32:52,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:32:52,667 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-13 09:32:52,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:32:52,742 INFO L225 Difference]: With dead ends: 30105 [2020-10-13 09:32:52,742 INFO L226 Difference]: Without dead ends: 19268 [2020-10-13 09:32:52,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:32:52,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19268 states. [2020-10-13 09:32:53,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19268 to 19252. [2020-10-13 09:32:53,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19252 states. [2020-10-13 09:32:53,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19252 states to 19252 states and 25253 transitions. [2020-10-13 09:32:53,177 INFO L78 Accepts]: Start accepts. Automaton has 19252 states and 25253 transitions. Word has length 184 [2020-10-13 09:32:53,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:32:53,178 INFO L479 AbstractCegarLoop]: Abstraction has 19252 states and 25253 transitions. [2020-10-13 09:32:53,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:32:53,178 INFO L276 IsEmpty]: Start isEmpty. Operand 19252 states and 25253 transitions. [2020-10-13 09:32:53,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-13 09:32:53,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:32:53,183 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:32:53,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:32:53,183 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:32:53,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:32:53,184 INFO L82 PathProgramCache]: Analyzing trace with hash -2098190831, now seen corresponding path program 1 times [2020-10-13 09:32:53,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:32:53,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388070764] [2020-10-13 09:32:53,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:32:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:53,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:53,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:54,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:54,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:54,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:32:54,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:32:54,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1136 [2020-10-13 09:32:54,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:54,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:32:54,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-10-13 09:32:54,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 09:32:54,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:54,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:32:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:54,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:54,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:54,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:32:54,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:54,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:32:54,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:54,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:32:54,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:54,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:32:54,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:54,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:32:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:54,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:54,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:54,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 09:32:54,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:54,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-13 09:32:54,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:54,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:32:54,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:54,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-13 09:32:54,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:54,935 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:32:54,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388070764] [2020-10-13 09:32:54,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:32:54,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:32:54,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173385582] [2020-10-13 09:32:54,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:32:54,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:32:54,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:32:54,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:32:54,950 INFO L87 Difference]: Start difference. First operand 19252 states and 25253 transitions. Second operand 5 states. [2020-10-13 09:33:18,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:33:18,688 INFO L93 Difference]: Finished difference Result 37238 states and 50682 transitions. [2020-10-13 09:33:18,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:33:18,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-10-13 09:33:18,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:33:18,763 INFO L225 Difference]: With dead ends: 37238 [2020-10-13 09:33:18,763 INFO L226 Difference]: Without dead ends: 23270 [2020-10-13 09:33:18,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:33:18,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23270 states. [2020-10-13 09:33:19,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23270 to 23252. [2020-10-13 09:33:19,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23252 states. [2020-10-13 09:33:19,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23252 states to 23252 states and 30770 transitions. [2020-10-13 09:33:19,406 INFO L78 Accepts]: Start accepts. Automaton has 23252 states and 30770 transitions. Word has length 186 [2020-10-13 09:33:19,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:33:19,407 INFO L479 AbstractCegarLoop]: Abstraction has 23252 states and 30770 transitions. [2020-10-13 09:33:19,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:33:19,407 INFO L276 IsEmpty]: Start isEmpty. Operand 23252 states and 30770 transitions. [2020-10-13 09:33:19,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-13 09:33:19,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:33:19,412 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, 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] [2020-10-13 09:33:19,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:33:19,412 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:33:19,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:33:19,413 INFO L82 PathProgramCache]: Analyzing trace with hash 678184316, now seen corresponding path program 1 times [2020-10-13 09:33:19,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:33:19,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936176809] [2020-10-13 09:33:19,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:33:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:19,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:19,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:19,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:20,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:23,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:23,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:24,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:24,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-13 09:33:24,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:33:24,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 09:33:24,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:24,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:33:24,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-13 09:33:24,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 09:33:24,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:24,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:33:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:24,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:24,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:24,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:33:24,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:24,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:33:24,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:24,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:24,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:24,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:24,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:24,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:33:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:24,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:24,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:24,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:33:24,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:24,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:33:24,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:24,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:24,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:24,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:24,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:24,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 09:33:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:24,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:24,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:24,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:33:24,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:24,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 09:33:24,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:24,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:33:24,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:24,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:33:24,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:24,816 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 09:33:24,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936176809] [2020-10-13 09:33:24,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:33:24,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:33:24,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247967909] [2020-10-13 09:33:24,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:33:24,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:33:24,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:33:24,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:33:24,819 INFO L87 Difference]: Start difference. First operand 23252 states and 30770 transitions. Second operand 5 states. [2020-10-13 09:33:40,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:33:40,737 INFO L93 Difference]: Finished difference Result 39522 states and 52866 transitions. [2020-10-13 09:33:40,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:33:40,739 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-10-13 09:33:40,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:33:40,825 INFO L225 Difference]: With dead ends: 39522 [2020-10-13 09:33:40,825 INFO L226 Difference]: Without dead ends: 23255 [2020-10-13 09:33:40,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:33:40,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23255 states. [2020-10-13 09:33:41,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23255 to 23252. [2020-10-13 09:33:41,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23252 states. [2020-10-13 09:33:41,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23252 states to 23252 states and 30746 transitions. [2020-10-13 09:33:41,443 INFO L78 Accepts]: Start accepts. Automaton has 23252 states and 30746 transitions. Word has length 193 [2020-10-13 09:33:41,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:33:41,444 INFO L479 AbstractCegarLoop]: Abstraction has 23252 states and 30746 transitions. [2020-10-13 09:33:41,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:33:41,444 INFO L276 IsEmpty]: Start isEmpty. Operand 23252 states and 30746 transitions. [2020-10-13 09:33:41,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-13 09:33:41,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:33:41,448 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, 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] [2020-10-13 09:33:41,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:33:41,449 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:33:41,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:33:41,450 INFO L82 PathProgramCache]: Analyzing trace with hash 753177735, now seen corresponding path program 1 times [2020-10-13 09:33:41,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:33:41,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285038924] [2020-10-13 09:33:41,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:33:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:41,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:41,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:41,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:42,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:44,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:44,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:46,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:46,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-13 09:33:46,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:33:46,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-13 09:33:46,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:46,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:33:46,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-13 09:33:46,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:33:46,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:46,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:33:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:46,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:46,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:46,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:33:46,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:46,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:33:46,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:46,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:46,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:46,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:46,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:46,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:33:46,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:46,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:46,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:46,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:33:46,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:46,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:33:46,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:46,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:46,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:46,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:46,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:46,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 09:33:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:46,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:46,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:46,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:33:46,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:46,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 09:33:46,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:46,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:33:46,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:46,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 09:33:46,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:46,853 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 09:33:46,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285038924] [2020-10-13 09:33:46,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:33:46,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:33:46,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844066511] [2020-10-13 09:33:46,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:33:46,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:33:46,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:33:46,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:33:46,856 INFO L87 Difference]: Start difference. First operand 23252 states and 30746 transitions. Second operand 5 states. [2020-10-13 09:34:00,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:34:00,557 INFO L93 Difference]: Finished difference Result 39466 states and 52659 transitions. [2020-10-13 09:34:00,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:34:00,561 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2020-10-13 09:34:00,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:34:00,645 INFO L225 Difference]: With dead ends: 39466 [2020-10-13 09:34:00,645 INFO L226 Difference]: Without dead ends: 23255 [2020-10-13 09:34:00,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:34:00,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23255 states. [2020-10-13 09:34:01,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23255 to 23252. [2020-10-13 09:34:01,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23252 states. [2020-10-13 09:34:01,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23252 states to 23252 states and 30736 transitions. [2020-10-13 09:34:01,153 INFO L78 Accepts]: Start accepts. Automaton has 23252 states and 30736 transitions. Word has length 200 [2020-10-13 09:34:01,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:34:01,154 INFO L479 AbstractCegarLoop]: Abstraction has 23252 states and 30736 transitions. [2020-10-13 09:34:01,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:34:01,154 INFO L276 IsEmpty]: Start isEmpty. Operand 23252 states and 30736 transitions. [2020-10-13 09:34:01,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-13 09:34:01,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:34:01,161 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, 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] [2020-10-13 09:34:01,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:34:01,163 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:34:01,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:34:01,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1197979749, now seen corresponding path program 1 times [2020-10-13 09:34:01,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:34:01,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164996281] [2020-10-13 09:34:01,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:34:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:01,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:01,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:02,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:02,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 09:34:02,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:34:02,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1449 [2020-10-13 09:34:02,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:02,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:34:02,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:34:02,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 09:34:02,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:02,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:34:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:02,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:02,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:02,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:34:02,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:02,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:34:02,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:02,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:34:02,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:02,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:34:02,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:02,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:34:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:02,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:02,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:02,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 09:34:02,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:02,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 09:34:02,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:02,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:34:02,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:34:02,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 09:34:02,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:02,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 09:34:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:02,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:02,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:02,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:34:02,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:02,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:34:02,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:02,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:02,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-13 09:34:02,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:02,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:03,024 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 48 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 09:34:03,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164996281] [2020-10-13 09:34:03,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:34:03,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:34:03,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979771831] [2020-10-13 09:34:03,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:34:03,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:34:03,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:34:03,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:34:03,027 INFO L87 Difference]: Start difference. First operand 23252 states and 30736 transitions. Second operand 7 states.