/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/Problem15_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:02:50,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:02:50,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:02:51,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:02:51,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:02:51,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:02:51,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:02:51,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:02:51,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:02:51,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:02:51,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:02:51,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:02:51,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:02:51,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:02:51,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:02:51,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:02:51,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:02:51,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:02:51,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:02:51,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:02:51,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:02:51,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:02:51,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:02:51,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:02:51,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:02:51,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:02:51,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:02:51,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:02:51,048 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:02:51,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:02:51,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:02:51,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:02:51,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:02:51,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:02:51,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:02:51,053 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:02:51,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:02:51,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:02:51,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:02:51,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:02:51,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:02:51,056 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 09:02:51,078 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:02:51,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:02:51,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:02:51,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:02:51,080 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:02:51,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:02:51,080 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:02:51,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:02:51,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:02:51,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:02:51,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:02:51,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:02:51,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:02:51,082 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:02:51,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:02:51,082 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:02:51,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:02:51,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:02:51,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:02:51,083 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:02:51,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:02:51,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:02:51,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:02:51,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:02:51,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:02:51,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:02:51,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:02:51,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:02:51,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:02:51,085 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 09:02:51,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:02:51,449 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:02:51,453 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:02:51,454 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:02:51,455 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:02:51,455 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label25.c [2020-10-13 09:02:51,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab006c7b9/75c0fbf89a3147d3ae0274b1f5dce420/FLAG89f3db2dd [2020-10-13 09:02:52,254 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:02:52,255 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label25.c [2020-10-13 09:02:52,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab006c7b9/75c0fbf89a3147d3ae0274b1f5dce420/FLAG89f3db2dd [2020-10-13 09:02:52,411 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab006c7b9/75c0fbf89a3147d3ae0274b1f5dce420 [2020-10-13 09:02:52,420 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:02:52,422 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:02:52,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:02:52,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:02:52,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:02:52,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:02:52" (1/1) ... [2020-10-13 09:02:52,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532b1c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:52, skipping insertion in model container [2020-10-13 09:02:52,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:02:52" (1/1) ... [2020-10-13 09:02:52,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:02:52,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:02:53,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:02:53,566 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:02:54,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:02:54,041 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:02:54,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:54 WrapperNode [2020-10-13 09:02:54,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:02:54,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:02:54,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:02:54,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:02:54,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:54" (1/1) ... [2020-10-13 09:02:54,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:54" (1/1) ... [2020-10-13 09:02:54,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:54" (1/1) ... [2020-10-13 09:02:54,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:54" (1/1) ... [2020-10-13 09:02:54,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:54" (1/1) ... [2020-10-13 09:02:54,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:54" (1/1) ... [2020-10-13 09:02:54,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:54" (1/1) ... [2020-10-13 09:02:54,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:02:54,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:02:54,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:02:54,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:02:54,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:54" (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 09:02:54,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:02:54,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:02:54,316 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:02:54,317 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:02:54,317 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:02:54,317 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:02:54,317 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:02:54,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:02:54,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:02:54,318 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:02:54,318 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:02:54,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:02:54,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:03:00,665 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:03:00,666 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:03:00,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:03:00 BoogieIcfgContainer [2020-10-13 09:03:00,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:03:00,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:03:00,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:03:00,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:03:00,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:02:52" (1/3) ... [2020-10-13 09:03:00,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194a0adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:03:00, skipping insertion in model container [2020-10-13 09:03:00,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:54" (2/3) ... [2020-10-13 09:03:00,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194a0adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:03:00, skipping insertion in model container [2020-10-13 09:03:00,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:03:00" (3/3) ... [2020-10-13 09:03:00,698 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label25.c [2020-10-13 09:03:00,712 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:03:00,728 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:03:00,744 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:03:00,774 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:03:00,775 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:03:00,775 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:03:00,775 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:03:00,775 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:03:00,775 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:03:00,775 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:03:00,775 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:03:00,805 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-13 09:03:00,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 09:03:00,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:03:00,815 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] [2020-10-13 09:03:00,815 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:03:00,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:03:00,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1873863040, now seen corresponding path program 1 times [2020-10-13 09:03:00,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:03:00,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148628224] [2020-10-13 09:03:00,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:03:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:01,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:01,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:01,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 09:03:01,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:01,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-10-13 09:03:01,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:01,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:03:01,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:03:01,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 09:03:01,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:03:01,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:01,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:01,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:01,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:01,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:01,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:01,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 09:03:01,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:01,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:01,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:01,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:03:01,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:01,554 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 09:03:01,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148628224] [2020-10-13 09:03:01,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:03:01,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:03:01,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617620472] [2020-10-13 09:03:01,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:03:01,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:01,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:03:01,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:03:01,583 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-13 09:03:12,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:03:12,118 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-13 09:03:12,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:03:12,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-13 09:03:12,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:03:12,141 INFO L225 Difference]: With dead ends: 1199 [2020-10-13 09:03:12,141 INFO L226 Difference]: Without dead ends: 697 [2020-10-13 09:03:12,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:03:12,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-13 09:03:12,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-13 09:03:12,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-13 09:03:12,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-13 09:03:12,255 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 30 [2020-10-13 09:03:12,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:03:12,255 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-13 09:03:12,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:03:12,256 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-13 09:03:12,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 09:03:12,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:03:12,261 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:03:12,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:03:12,262 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:03:12,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:03:12,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1986342532, now seen corresponding path program 1 times [2020-10-13 09:03:12,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:03:12,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237483128] [2020-10-13 09:03:12,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:03:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:12,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:12,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:13,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:13,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 09:03:13,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:03:13,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1575 [2020-10-13 09:03:13,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:13,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:13,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 09:03:13,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 09:03:13,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:03:13,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:13,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:13,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:13,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:13,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:13,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:03:13,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:13,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:13,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:13,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:13,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 09:03:14,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:03:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:14,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:14,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:14,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:03:14,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:14,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 09:03:14,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:14,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:14,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:14,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:03:14,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:03:14,197 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:03:14,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237483128] [2020-10-13 09:03:14,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:03:14,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:03:14,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052982474] [2020-10-13 09:03:14,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:03:14,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:14,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:03:14,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:03:14,203 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 5 states. [2020-10-13 09:03:22,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:03:22,666 INFO L93 Difference]: Finished difference Result 2008 states and 2962 transitions. [2020-10-13 09:03:22,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:03:22,667 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-13 09:03:22,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:03:22,680 INFO L225 Difference]: With dead ends: 2008 [2020-10-13 09:03:22,680 INFO L226 Difference]: Without dead ends: 1323 [2020-10-13 09:03:22,683 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 09:03:22,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2020-10-13 09:03:22,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1317. [2020-10-13 09:03:22,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1317 states. [2020-10-13 09:03:22,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1710 transitions. [2020-10-13 09:03:22,788 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1710 transitions. Word has length 99 [2020-10-13 09:03:22,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:03:22,789 INFO L479 AbstractCegarLoop]: Abstraction has 1317 states and 1710 transitions. [2020-10-13 09:03:22,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:03:22,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1710 transitions. [2020-10-13 09:03:22,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-13 09:03:22,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:03:22,804 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, 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, 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] [2020-10-13 09:03:22,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:03:22,805 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:03:22,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:03:22,805 INFO L82 PathProgramCache]: Analyzing trace with hash 62176103, now seen corresponding path program 1 times [2020-10-13 09:03:22,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:03:22,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131380025] [2020-10-13 09:03:22,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:03:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:22,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:23,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:23,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:24,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:24,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:26,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:27,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:27,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:03:27,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:03:27,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 09:03:27,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:27,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:27,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-13 09:03:27,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 09:03:27,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:03:28,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:28,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:28,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:28,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:28,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:28,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:28,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:03:28,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:28,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:28,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:28,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:28,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:03:28,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:03:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:28,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:28,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:28,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:03:28,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:28,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:03:28,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:28,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:28,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:28,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:28,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:28,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 09:03:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:28,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:28,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:28,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:03:28,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:28,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 09:03:28,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:28,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:28,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:28,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:03:28,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:28,425 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-13 09:03:28,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131380025] [2020-10-13 09:03:28,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:03:28,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:03:28,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189799249] [2020-10-13 09:03:28,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:03:28,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:28,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:03:28,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:03:28,431 INFO L87 Difference]: Start difference. First operand 1317 states and 1710 transitions. Second operand 5 states. [2020-10-13 09:03:37,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:03:37,851 INFO L93 Difference]: Finished difference Result 3259 states and 4364 transitions. [2020-10-13 09:03:37,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:03:37,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-10-13 09:03:37,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:03:37,869 INFO L225 Difference]: With dead ends: 3259 [2020-10-13 09:03:37,869 INFO L226 Difference]: Without dead ends: 1948 [2020-10-13 09:03:37,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 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 09:03:37,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2020-10-13 09:03:37,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1944. [2020-10-13 09:03:37,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1944 states. [2020-10-13 09:03:37,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1944 states to 1944 states and 2578 transitions. [2020-10-13 09:03:37,954 INFO L78 Accepts]: Start accepts. Automaton has 1944 states and 2578 transitions. Word has length 204 [2020-10-13 09:03:37,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:03:37,956 INFO L479 AbstractCegarLoop]: Abstraction has 1944 states and 2578 transitions. [2020-10-13 09:03:37,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:03:37,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1944 states and 2578 transitions. [2020-10-13 09:03:37,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-13 09:03:37,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:03:37,961 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, 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, 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] [2020-10-13 09:03:37,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:03:37,962 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:03:37,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:03:37,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1755320287, now seen corresponding path program 1 times [2020-10-13 09:03:37,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:03:37,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731858672] [2020-10-13 09:03:37,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:03:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:38,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:38,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:38,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:39,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:41,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:41,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-13 09:03:41,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:03:41,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3095 [2020-10-13 09:03:41,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:41,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:41,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-13 09:03:41,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 09:03:41,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:03:41,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:41,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:41,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:41,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:41,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:41,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:03:41,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:41,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:41,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:03:41,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:03:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:41,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:41,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:41,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:03:41,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:41,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 09:03:41,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:41,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:41,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:41,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:41,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:03:41,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 09:03:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:41,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:41,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:41,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:03:41,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:41,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-13 09:03:41,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:41,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:41,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:41,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 09:03:41,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:03:41,654 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-13 09:03:41,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731858672] [2020-10-13 09:03:41,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:03:41,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:03:41,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084632532] [2020-10-13 09:03:41,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:03:41,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:41,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:03:41,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:03:41,662 INFO L87 Difference]: Start difference. First operand 1944 states and 2578 transitions. Second operand 6 states. [2020-10-13 09:03:51,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:03:51,465 INFO L93 Difference]: Finished difference Result 5765 states and 8129 transitions. [2020-10-13 09:03:51,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:03:51,466 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 208 [2020-10-13 09:03:51,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:03:51,493 INFO L225 Difference]: With dead ends: 5765 [2020-10-13 09:03:51,494 INFO L226 Difference]: Without dead ends: 3827 [2020-10-13 09:03:51,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:03:51,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3827 states. [2020-10-13 09:03:51,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3827 to 3511. [2020-10-13 09:03:51,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3511 states. [2020-10-13 09:03:51,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3511 states to 3511 states and 4685 transitions. [2020-10-13 09:03:51,627 INFO L78 Accepts]: Start accepts. Automaton has 3511 states and 4685 transitions. Word has length 208 [2020-10-13 09:03:51,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:03:51,628 INFO L479 AbstractCegarLoop]: Abstraction has 3511 states and 4685 transitions. [2020-10-13 09:03:51,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:03:51,629 INFO L276 IsEmpty]: Start isEmpty. Operand 3511 states and 4685 transitions. [2020-10-13 09:03:51,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-13 09:03:51,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:03:51,635 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, 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, 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] [2020-10-13 09:03:51,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:03:51,635 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:03:51,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:03:51,636 INFO L82 PathProgramCache]: Analyzing trace with hash -644994672, now seen corresponding path program 1 times [2020-10-13 09:03:51,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:03:51,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065562289] [2020-10-13 09:03:51,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:03:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:51,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:51,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:52,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:53,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:53,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 09:03:53,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:03:53,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2127 [2020-10-13 09:03:53,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:53,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:53,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:03:53,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:03:53,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:53,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:53,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:53,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:53,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:53,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:53,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:03:53,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:53,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:53,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:53,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:53,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:03:54,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:03:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:54,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:54,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:54,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:03:54,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:54,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 09:03:54,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:54,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:54,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:54,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 09:03:54,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:54,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 09:03:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:54,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:54,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:54,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:54,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:03:54,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:03:54,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 729 [2020-10-13 09:03:54,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:54,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:54,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:03:54,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-13 09:03:54,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:55,500 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:03:55,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065562289] [2020-10-13 09:03:55,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:03:55,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:03:55,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005884800] [2020-10-13 09:03:55,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:03:55,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:55,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:03:55,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:03:55,503 INFO L87 Difference]: Start difference. First operand 3511 states and 4685 transitions. Second operand 6 states. [2020-10-13 09:04:04,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:04,343 INFO L93 Difference]: Finished difference Result 7096 states and 9480 transitions. [2020-10-13 09:04:04,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:04:04,344 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 275 [2020-10-13 09:04:04,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:04,370 INFO L225 Difference]: With dead ends: 7096 [2020-10-13 09:04:04,370 INFO L226 Difference]: Without dead ends: 3551 [2020-10-13 09:04:04,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 09:04:04,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3551 states. [2020-10-13 09:04:04,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3551 to 3513. [2020-10-13 09:04:04,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3513 states. [2020-10-13 09:04:04,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 4665 transitions. [2020-10-13 09:04:04,500 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 4665 transitions. Word has length 275 [2020-10-13 09:04:04,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:04,501 INFO L479 AbstractCegarLoop]: Abstraction has 3513 states and 4665 transitions. [2020-10-13 09:04:04,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:04:04,501 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 4665 transitions. [2020-10-13 09:04:04,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-13 09:04:04,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:04,509 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, 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, 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, 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] [2020-10-13 09:04:04,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:04:04,510 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:04,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:04,511 INFO L82 PathProgramCache]: Analyzing trace with hash -608449795, now seen corresponding path program 1 times [2020-10-13 09:04:04,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:04,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491283723] [2020-10-13 09:04:04,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:04,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:04,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:04,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:07,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:09,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:09,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-13 09:04:09,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:04:09,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 09:04:09,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:09,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:09,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-13 09:04:09,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:04:09,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:09,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:09,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:09,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:09,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:09,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:09,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:04:09,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:09,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:09,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:09,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:09,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:09,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:04:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:09,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:09,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:09,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:04:09,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:09,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-13 09:04:09,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:09,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:09,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:09,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-13 09:04:09,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:10,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-13 09:04:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:10,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:10,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:11,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:11,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:04:11,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:04:11,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 949 [2020-10-13 09:04:11,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:11,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:11,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:04:11,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-13 09:04:11,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:11,766 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:04:11,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491283723] [2020-10-13 09:04:11,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:04:11,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:04:11,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847077823] [2020-10-13 09:04:11,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:04:11,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:11,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:04:11,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:04:11,769 INFO L87 Difference]: Start difference. First operand 3513 states and 4665 transitions. Second operand 6 states. [2020-10-13 09:04:22,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:22,757 INFO L93 Difference]: Finished difference Result 7097 states and 9435 transitions. [2020-10-13 09:04:22,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:04:22,760 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 342 [2020-10-13 09:04:22,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:22,779 INFO L225 Difference]: With dead ends: 7097 [2020-10-13 09:04:22,779 INFO L226 Difference]: Without dead ends: 3553 [2020-10-13 09:04:22,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 09:04:22,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3553 states. [2020-10-13 09:04:22,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3553 to 3515. [2020-10-13 09:04:22,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3515 states. [2020-10-13 09:04:22,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3515 states to 3515 states and 4504 transitions. [2020-10-13 09:04:22,898 INFO L78 Accepts]: Start accepts. Automaton has 3515 states and 4504 transitions. Word has length 342 [2020-10-13 09:04:22,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:22,899 INFO L479 AbstractCegarLoop]: Abstraction has 3515 states and 4504 transitions. [2020-10-13 09:04:22,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:04:22,900 INFO L276 IsEmpty]: Start isEmpty. Operand 3515 states and 4504 transitions. [2020-10-13 09:04:22,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2020-10-13 09:04:22,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:22,911 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:22,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:04:22,912 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:22,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:22,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1744859645, now seen corresponding path program 1 times [2020-10-13 09:04:22,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:22,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883339525] [2020-10-13 09:04:22,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:23,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:23,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:23,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:28,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:28,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 424 [2020-10-13 09:04:28,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:04:28,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 09:04:28,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:28,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:28,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-13 09:04:28,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:04:28,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:28,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:28,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:28,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:28,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:28,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:28,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:04:28,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:28,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:28,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:28,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:28,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:28,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:04:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:28,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:28,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:28,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:04:28,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:28,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-13 09:04:28,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:28,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:28,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:28,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-13 09:04:28,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:28,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:04:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:28,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:28,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:28,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:04:28,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:28,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-13 09:04:28,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:28,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:28,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:04:28,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 09:04:28,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:28,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-13 09:04:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:28,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:28,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:28,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 09:04:28,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:28,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 09:04:28,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:28,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:28,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 09:04:28,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:28,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:29,229 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 150 proven. 79 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-13 09:04:29,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883339525] [2020-10-13 09:04:29,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:04:29,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:04:29,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913686840] [2020-10-13 09:04:29,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:04:29,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:29,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:04:29,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:04:29,233 INFO L87 Difference]: Start difference. First operand 3515 states and 4504 transitions. Second operand 7 states. [2020-10-13 09:04:39,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:39,228 INFO L93 Difference]: Finished difference Result 8029 states and 10540 transitions. [2020-10-13 09:04:39,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:04:39,230 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 410 [2020-10-13 09:04:39,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:39,254 INFO L225 Difference]: With dead ends: 8029 [2020-10-13 09:04:39,255 INFO L226 Difference]: Without dead ends: 4520 [2020-10-13 09:04:39,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:04:39,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4520 states. [2020-10-13 09:04:39,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4520 to 4504. [2020-10-13 09:04:39,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4504 states. [2020-10-13 09:04:39,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4504 states to 4504 states and 5613 transitions. [2020-10-13 09:04:39,396 INFO L78 Accepts]: Start accepts. Automaton has 4504 states and 5613 transitions. Word has length 410 [2020-10-13 09:04:39,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:39,397 INFO L479 AbstractCegarLoop]: Abstraction has 4504 states and 5613 transitions. [2020-10-13 09:04:39,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:04:39,398 INFO L276 IsEmpty]: Start isEmpty. Operand 4504 states and 5613 transitions. [2020-10-13 09:04:39,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2020-10-13 09:04:39,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:39,408 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:39,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:04:39,409 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:39,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:39,409 INFO L82 PathProgramCache]: Analyzing trace with hash -537279133, now seen corresponding path program 1 times [2020-10-13 09:04:39,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:39,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002754522] [2020-10-13 09:04:39,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:39,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:39,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:40,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:40,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:44,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:44,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 429 [2020-10-13 09:04:44,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:04:44,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 09:04:44,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:44,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:04:44,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-13 09:04:44,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 09:04:44,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:44,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:44,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:44,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:44,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:44,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:44,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:04:44,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:44,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:44,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:44,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:44,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:44,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:04:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:44,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:45,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:45,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-13 09:04:45,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:45,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-13 09:04:45,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:45,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:45,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:45,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-13 09:04:45,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:45,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-13 09:04:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:45,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:45,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:45,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:45,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:04:45,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:04:45,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 528 [2020-10-13 09:04:45,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:45,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:45,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:04:45,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-13 09:04:45,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:46,022 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:04:46,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002754522] [2020-10-13 09:04:46,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:04:46,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:04:46,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503259231] [2020-10-13 09:04:46,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:04:46,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:46,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:04:46,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:04:46,025 INFO L87 Difference]: Start difference. First operand 4504 states and 5613 transitions. Second operand 7 states. [2020-10-13 09:05:01,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:01,723 INFO L93 Difference]: Finished difference Result 10996 states and 14316 transitions. [2020-10-13 09:05:01,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:05:01,725 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 417 [2020-10-13 09:05:01,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:01,756 INFO L225 Difference]: With dead ends: 10996 [2020-10-13 09:05:01,756 INFO L226 Difference]: Without dead ends: 6175 [2020-10-13 09:05:01,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:05:01,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6175 states. [2020-10-13 09:05:01,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6175 to 6109. [2020-10-13 09:05:01,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6109 states. [2020-10-13 09:05:01,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6109 states to 6109 states and 7830 transitions. [2020-10-13 09:05:01,985 INFO L78 Accepts]: Start accepts. Automaton has 6109 states and 7830 transitions. Word has length 417 [2020-10-13 09:05:01,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:01,986 INFO L479 AbstractCegarLoop]: Abstraction has 6109 states and 7830 transitions. [2020-10-13 09:05:01,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:05:01,986 INFO L276 IsEmpty]: Start isEmpty. Operand 6109 states and 7830 transitions. [2020-10-13 09:05:02,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-10-13 09:05:02,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:02,010 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:02,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:05:02,011 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:02,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:02,011 INFO L82 PathProgramCache]: Analyzing trace with hash -295362474, now seen corresponding path program 1 times [2020-10-13 09:05:02,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:02,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484338133] [2020-10-13 09:05:02,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:02,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:02,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:02,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:02,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:04,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:04,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:07,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:07,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 463 [2020-10-13 09:05:07,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:05:07,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-13 09:05:07,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:05:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-13 09:05:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 09:05:07,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:07,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:07,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:07,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:07,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:07,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:07,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:05:07,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:07,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:07,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:07,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:07,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:07,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:07,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:07,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:07,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:05:07,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:07,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 09:05:07,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:07,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:07,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:07,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:07,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:07,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:05:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:07,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:07,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:07,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:05:07,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:07,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:05:07,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:07,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:07,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:07,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:05:07,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:07,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-13 09:05:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:07,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:07,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:08,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:08,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:05:08,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:05:08,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 692 [2020-10-13 09:05:08,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:08,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:05:08,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:05:08,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-13 09:05:08,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:08,435 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 287 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-13 09:05:08,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484338133] [2020-10-13 09:05:08,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:05:08,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:05:08,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213289588] [2020-10-13 09:05:08,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:05:08,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:08,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:05:08,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:05:08,438 INFO L87 Difference]: Start difference. First operand 6109 states and 7830 transitions. Second operand 7 states. [2020-10-13 09:05:16,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:16,407 INFO L93 Difference]: Finished difference Result 13549 states and 17617 transitions. [2020-10-13 09:05:16,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:05:16,410 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 449 [2020-10-13 09:05:16,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:16,441 INFO L225 Difference]: With dead ends: 13549 [2020-10-13 09:05:16,441 INFO L226 Difference]: Without dead ends: 7129 [2020-10-13 09:05:16,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:05:16,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7129 states. [2020-10-13 09:05:16,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7129 to 4555. [2020-10-13 09:05:16,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4555 states. [2020-10-13 09:05:16,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4555 states to 4555 states and 5598 transitions. [2020-10-13 09:05:16,601 INFO L78 Accepts]: Start accepts. Automaton has 4555 states and 5598 transitions. Word has length 449 [2020-10-13 09:05:16,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:16,602 INFO L479 AbstractCegarLoop]: Abstraction has 4555 states and 5598 transitions. [2020-10-13 09:05:16,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:05:16,602 INFO L276 IsEmpty]: Start isEmpty. Operand 4555 states and 5598 transitions. [2020-10-13 09:05:16,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2020-10-13 09:05:16,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:16,618 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:05:16,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:05:16,618 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:16,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:16,619 INFO L82 PathProgramCache]: Analyzing trace with hash 513555356, now seen corresponding path program 1 times [2020-10-13 09:05:16,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:16,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879992559] [2020-10-13 09:05:16,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:16,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:16,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:16,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:17,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:19,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:21,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:21,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:21,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 485 [2020-10-13 09:05:21,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:05:21,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-13 09:05:21,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:21,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:05:21,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 303 [2020-10-13 09:05:21,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 09:05:21,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:21,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:21,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:21,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:21,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:21,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:21,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:05:21,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:21,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:21,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:21,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:21,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:05:21,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:21,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:22,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:22,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:05:22,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:22,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 09:05:22,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:22,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:22,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:22,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:22,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:05:22,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:05:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:22,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:22,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:22,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:05:22,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:22,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 09:05:22,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:22,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:22,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:22,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 09:05:22,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:22,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-13 09:05:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:22,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:22,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:23,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:23,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:05:23,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:05:23,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 663 [2020-10-13 09:05:23,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:23,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:05:23,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:05:23,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-13 09:05:23,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:23,211 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 309 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-13 09:05:23,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879992559] [2020-10-13 09:05:23,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:05:23,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:05:23,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412895276] [2020-10-13 09:05:23,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:05:23,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:23,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:05:23,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:05:23,214 INFO L87 Difference]: Start difference. First operand 4555 states and 5598 transitions. Second operand 7 states. [2020-10-13 09:05:31,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:31,110 INFO L93 Difference]: Finished difference Result 9459 states and 11670 transitions. [2020-10-13 09:05:31,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:05:31,118 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 471 [2020-10-13 09:05:31,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:31,134 INFO L225 Difference]: With dead ends: 9459 [2020-10-13 09:05:31,135 INFO L226 Difference]: Without dead ends: 4593 [2020-10-13 09:05:31,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:05:31,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4593 states. [2020-10-13 09:05:31,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4593 to 4557. [2020-10-13 09:05:31,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4557 states. [2020-10-13 09:05:31,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4557 states to 4557 states and 5570 transitions. [2020-10-13 09:05:31,239 INFO L78 Accepts]: Start accepts. Automaton has 4557 states and 5570 transitions. Word has length 471 [2020-10-13 09:05:31,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:31,240 INFO L479 AbstractCegarLoop]: Abstraction has 4557 states and 5570 transitions. [2020-10-13 09:05:31,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:05:31,240 INFO L276 IsEmpty]: Start isEmpty. Operand 4557 states and 5570 transitions. [2020-10-13 09:05:31,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2020-10-13 09:05:31,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:31,249 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:31,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:05:31,250 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:31,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:31,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1771623955, now seen corresponding path program 1 times [2020-10-13 09:05:31,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:31,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185426077] [2020-10-13 09:05:31,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:31,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:31,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:31,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:36,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:36,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 505 [2020-10-13 09:05:36,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:05:36,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 09:05:36,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:36,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:05:36,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-13 09:05:36,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-13 09:05:36,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:36,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:36,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:36,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:36,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:36,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:36,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:05:36,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:36,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:36,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:36,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:36,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:36,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:36,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:36,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:36,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:05:36,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:36,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 09:05:36,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:36,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:36,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:36,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-13 09:05:36,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:36,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:05:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:36,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:36,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:36,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:05:36,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:36,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 09:05:36,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:36,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:05:36,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:05:36,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-13 09:05:36,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:36,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-13 09:05:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:36,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:36,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:36,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:05:36,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:36,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 09:05:36,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:36,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:36,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-13 09:05:36,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:36,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:37,045 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 181 proven. 110 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-13 09:05:37,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185426077] [2020-10-13 09:05:37,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:05:37,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:05:37,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760102487] [2020-10-13 09:05:37,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:05:37,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:37,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:05:37,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:05:37,048 INFO L87 Difference]: Start difference. First operand 4557 states and 5570 transitions. Second operand 7 states. [2020-10-13 09:05:46,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:46,421 INFO L93 Difference]: Finished difference Result 10083 states and 12392 transitions. [2020-10-13 09:05:46,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:05:46,424 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 491 [2020-10-13 09:05:46,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:46,441 INFO L225 Difference]: With dead ends: 10083 [2020-10-13 09:05:46,441 INFO L226 Difference]: Without dead ends: 5532 [2020-10-13 09:05:46,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:05:46,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5532 states. [2020-10-13 09:05:46,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5532 to 5503. [2020-10-13 09:05:46,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5503 states. [2020-10-13 09:05:46,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5503 states to 5503 states and 6665 transitions. [2020-10-13 09:05:46,554 INFO L78 Accepts]: Start accepts. Automaton has 5503 states and 6665 transitions. Word has length 491 [2020-10-13 09:05:46,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:46,555 INFO L479 AbstractCegarLoop]: Abstraction has 5503 states and 6665 transitions. [2020-10-13 09:05:46,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:05:46,555 INFO L276 IsEmpty]: Start isEmpty. Operand 5503 states and 6665 transitions. [2020-10-13 09:05:46,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2020-10-13 09:05:46,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:46,563 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:46,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:05:46,563 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:46,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:46,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1028173242, now seen corresponding path program 1 times [2020-10-13 09:05:46,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:46,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108902789] [2020-10-13 09:05:46,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:46,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:46,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:47,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:49,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:51,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:51,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 520 [2020-10-13 09:05:51,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:05:51,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 09:05:51,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:51,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:05:51,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-13 09:05:51,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-13 09:05:51,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:51,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:51,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:51,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:51,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:51,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:51,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:51,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:05:51,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:51,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:51,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:51,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:51,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:51,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:51,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:51,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:51,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:51,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:05:51,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:51,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 09:05:51,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:51,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:51,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:51,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-13 09:05:51,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:51,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:05:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:51,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:52,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:52,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 09:05:52,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:52,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-13 09:05:52,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:52,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:05:52,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:05:52,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-13 09:05:52,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:05:52,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-13 09:05:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:52,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:52,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:52,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:05:52,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:52,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 09:05:52,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:52,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:52,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-13 09:05:52,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:52,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:52,397 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 194 proven. 123 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-13 09:05:52,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108902789] [2020-10-13 09:05:52,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:05:52,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:05:52,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921380865] [2020-10-13 09:05:52,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:05:52,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:52,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:05:52,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:05:52,399 INFO L87 Difference]: Start difference. First operand 5503 states and 6665 transitions. Second operand 7 states. [2020-10-13 09:06:04,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:06:04,085 INFO L93 Difference]: Finished difference Result 16035 states and 19964 transitions. [2020-10-13 09:06:04,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:06:04,093 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 506 [2020-10-13 09:06:04,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:06:04,141 INFO L225 Difference]: With dead ends: 16035 [2020-10-13 09:06:04,141 INFO L226 Difference]: Without dead ends: 10538 [2020-10-13 09:06:04,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:06:04,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10538 states. [2020-10-13 09:06:04,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10538 to 10506. [2020-10-13 09:06:04,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10506 states. [2020-10-13 09:06:04,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10506 states to 10506 states and 13050 transitions. [2020-10-13 09:06:04,369 INFO L78 Accepts]: Start accepts. Automaton has 10506 states and 13050 transitions. Word has length 506 [2020-10-13 09:06:04,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:06:04,369 INFO L479 AbstractCegarLoop]: Abstraction has 10506 states and 13050 transitions. [2020-10-13 09:06:04,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:06:04,370 INFO L276 IsEmpty]: Start isEmpty. Operand 10506 states and 13050 transitions. [2020-10-13 09:06:04,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2020-10-13 09:06:04,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:06:04,390 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:04,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:06:04,390 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:06:04,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:06:04,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1826443275, now seen corresponding path program 1 times [2020-10-13 09:06:04,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:06:04,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800682365] [2020-10-13 09:06:04,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:06:04,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:04,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:04,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:06,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:07,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:09,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:09,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 571 [2020-10-13 09:06:09,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:06:09,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 09:06:09,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:09,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:09,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 388 [2020-10-13 09:06:09,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-13 09:06:09,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:09,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:06:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:09,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:09,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:09,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:06:09,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:09,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:06:09,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:09,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:09,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:09,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:09,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:09,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:06:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:09,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:09,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:09,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-13 09:06:09,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:09,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 09:06:09,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:09,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:09,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:09,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:09,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:09,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-13 09:06:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:09,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:09,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:09,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 09:06:09,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:09,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 09:06:09,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:09,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:09,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:09,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-13 09:06:09,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:09,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-10-13 09:06:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:09,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:10,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:10,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:06:10,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:10,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-13 09:06:10,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:10,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:10,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:06:10,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-13 09:06:10,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:10,292 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 342 proven. 2 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-13 09:06:10,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800682365] [2020-10-13 09:06:10,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:06:10,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:06:10,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156576802] [2020-10-13 09:06:10,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:06:10,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:06:10,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:06:10,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:06:10,294 INFO L87 Difference]: Start difference. First operand 10506 states and 13050 transitions. Second operand 7 states. [2020-10-13 09:06:21,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:06:21,974 INFO L93 Difference]: Finished difference Result 27110 states and 36295 transitions. [2020-10-13 09:06:21,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:06:21,976 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 557 [2020-10-13 09:06:21,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:06:22,044 INFO L225 Difference]: With dead ends: 27110 [2020-10-13 09:06:22,045 INFO L226 Difference]: Without dead ends: 16610 [2020-10-13 09:06:22,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:06:22,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16610 states. [2020-10-13 09:06:22,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16610 to 13071. [2020-10-13 09:06:22,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13071 states. [2020-10-13 09:06:22,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13071 states to 13071 states and 16214 transitions. [2020-10-13 09:06:22,547 INFO L78 Accepts]: Start accepts. Automaton has 13071 states and 16214 transitions. Word has length 557 [2020-10-13 09:06:22,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:06:22,548 INFO L479 AbstractCegarLoop]: Abstraction has 13071 states and 16214 transitions. [2020-10-13 09:06:22,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:06:22,548 INFO L276 IsEmpty]: Start isEmpty. Operand 13071 states and 16214 transitions. [2020-10-13 09:06:22,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2020-10-13 09:06:22,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:06:22,571 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:22,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:06:22,573 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:06:22,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:06:22,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1222061142, now seen corresponding path program 1 times [2020-10-13 09:06:22,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:06:22,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666669304] [2020-10-13 09:06:22,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:06:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:22,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:22,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:25,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:25,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 579 [2020-10-13 09:06:25,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:06:25,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2363 [2020-10-13 09:06:25,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:25,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:25,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-13 09:06:25,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-13 09:06:25,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:25,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:06:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:25,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:25,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:25,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:06:25,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:25,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:06:25,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:25,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:25,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:25,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:25,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:25,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:06:25,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:25,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:25,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:25,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-13 09:06:25,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:25,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-13 09:06:25,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:25,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:25,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:25,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-13 09:06:25,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:25,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:06:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:25,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:25,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:25,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:06:25,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:25,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 09:06:25,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:25,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:25,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:06:25,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-13 09:06:25,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:25,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-13 09:06:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:25,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:25,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:25,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:06:25,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:25,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 09:06:25,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:25,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:25,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-13 09:06:25,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:25,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:26,260 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 181 proven. 110 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-13 09:06:26,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666669304] [2020-10-13 09:06:26,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:06:26,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:06:26,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425549274] [2020-10-13 09:06:26,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:06:26,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:06:26,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:06:26,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:06:26,262 INFO L87 Difference]: Start difference. First operand 13071 states and 16214 transitions. Second operand 7 states.