/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_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:56:59,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:56:59,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:56:59,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:56:59,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:56:59,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:56:59,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:56:59,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:56:59,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:56:59,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:56:59,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:56:59,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:56:59,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:56:59,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:56:59,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:56:59,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:56:59,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:56:59,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:56:59,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:56:59,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:56:59,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:56:59,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:56:59,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:56:59,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:56:59,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:56:59,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:56:59,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:56:59,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:56:59,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:56:59,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:56:59,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:56:59,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:56:59,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:56:59,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:56:59,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:56:59,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:56:59,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:56:59,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:56:59,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:56:59,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:56:59,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:56:59,429 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 08:56:59,469 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:56:59,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:56:59,471 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:56:59,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:56:59,472 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:56:59,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:56:59,473 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:56:59,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:56:59,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:56:59,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:56:59,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:56:59,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:56:59,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:56:59,475 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:56:59,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:56:59,475 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:56:59,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:56:59,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:56:59,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:56:59,476 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:56:59,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:56:59,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:56:59,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:56:59,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:56:59,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:56:59,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:56:59,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:56:59,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:56:59,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:56:59,478 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 08:56:59,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:56:59,784 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:56:59,787 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:56:59,788 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:56:59,789 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:56:59,790 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label02.c [2020-10-13 08:56:59,851 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d6abc7a2/97a136092fe343d192107e8e600305a9/FLAGcbecdc815 [2020-10-13 08:57:00,501 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:57:00,502 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label02.c [2020-10-13 08:57:00,524 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d6abc7a2/97a136092fe343d192107e8e600305a9/FLAGcbecdc815 [2020-10-13 08:57:00,704 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d6abc7a2/97a136092fe343d192107e8e600305a9 [2020-10-13 08:57:00,715 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:57:00,718 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:57:00,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:57:00,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:57:00,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:57:00,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:57:00" (1/1) ... [2020-10-13 08:57:00,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20e20dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:00, skipping insertion in model container [2020-10-13 08:57:00,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:57:00" (1/1) ... [2020-10-13 08:57:00,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:57:00,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:57:01,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:57:01,715 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:57:02,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:57:02,079 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:57:02,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:02 WrapperNode [2020-10-13 08:57:02,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:57:02,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:57:02,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:57:02,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:57:02,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:02" (1/1) ... [2020-10-13 08:57:02,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:02" (1/1) ... [2020-10-13 08:57:02,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:02" (1/1) ... [2020-10-13 08:57:02,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:02" (1/1) ... [2020-10-13 08:57:02,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:02" (1/1) ... [2020-10-13 08:57:02,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:02" (1/1) ... [2020-10-13 08:57:02,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:02" (1/1) ... [2020-10-13 08:57:02,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:57:02,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:57:02,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:57:02,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:57:02,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:02" (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 08:57:02,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:57:02,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:57:02,347 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:57:02,347 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:57:02,347 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:57:02,348 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:57:02,348 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:57:02,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:57:02,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:57:02,348 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:57:02,349 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:57:02,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:57:02,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:57:08,926 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:57:08,927 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:57:08,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:57:08 BoogieIcfgContainer [2020-10-13 08:57:08,935 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:57:08,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:57:08,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:57:08,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:57:08,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:57:00" (1/3) ... [2020-10-13 08:57:08,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3b73df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:57:08, skipping insertion in model container [2020-10-13 08:57:08,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:02" (2/3) ... [2020-10-13 08:57:08,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3b73df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:57:08, skipping insertion in model container [2020-10-13 08:57:08,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:57:08" (3/3) ... [2020-10-13 08:57:08,943 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label02.c [2020-10-13 08:57:08,954 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:57:08,962 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:57:08,977 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:57:09,005 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:57:09,005 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:57:09,005 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:57:09,006 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:57:09,006 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:57:09,006 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:57:09,006 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:57:09,006 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:57:09,040 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-13 08:57:09,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-13 08:57:09,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:57:09,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:57:09,054 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:57:09,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:57:09,059 INFO L82 PathProgramCache]: Analyzing trace with hash -2039644208, now seen corresponding path program 1 times [2020-10-13 08:57:09,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:57:09,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407777266] [2020-10-13 08:57:09,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:57:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:09,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:09,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:09,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 08:57:09,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:57:09,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-10-13 08:57:09,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:09,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:57:09,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:57:09,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 08:57:09,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:57:09,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:57:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:09,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:09,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:09,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:57:09,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:57:09,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 08:57:09,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:57:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:57:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:57:09,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:57:09,676 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 08:57:09,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407777266] [2020-10-13 08:57:09,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:57:09,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:57:09,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509970577] [2020-10-13 08:57:09,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:57:09,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:57:09,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:57:09,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:57:09,707 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-13 08:57:17,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:57:17,646 INFO L93 Difference]: Finished difference Result 1224 states and 2200 transitions. [2020-10-13 08:57:17,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:57:17,648 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-13 08:57:17,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:57:17,670 INFO L225 Difference]: With dead ends: 1224 [2020-10-13 08:57:17,670 INFO L226 Difference]: Without dead ends: 708 [2020-10-13 08:57:17,682 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 08:57:17,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-10-13 08:57:17,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 694. [2020-10-13 08:57:17,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-13 08:57:17,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1080 transitions. [2020-10-13 08:57:17,785 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1080 transitions. Word has length 34 [2020-10-13 08:57:17,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:57:17,786 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1080 transitions. [2020-10-13 08:57:17,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:57:17,786 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1080 transitions. [2020-10-13 08:57:17,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 08:57:17,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:57:17,791 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:17,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:57:17,792 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:57:17,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:57:17,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1171994513, now seen corresponding path program 1 times [2020-10-13 08:57:17,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:57:17,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651202384] [2020-10-13 08:57:17,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:57:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:17,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:18,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:18,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:18,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 08:57:18,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:57:18,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1074 [2020-10-13 08:57:18,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:18,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:57:18,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 08:57:18,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 08:57:18,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:57:18,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:57:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:19,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:19,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:19,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:57:19,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:57:19,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:57:19,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:19,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:57:19,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:57:19,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:57:19,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:57:19,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:57:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:19,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:19,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:19,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:57:19,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:57:19,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 08:57:19,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:19,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:57:19,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:57:19,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 08:57:19,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:57:19,152 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:57:19,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651202384] [2020-10-13 08:57:19,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:57:19,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:57:19,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325465226] [2020-10-13 08:57:19,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:57:19,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:57:19,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:57:19,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:57:19,157 INFO L87 Difference]: Start difference. First operand 694 states and 1080 transitions. Second operand 5 states. [2020-10-13 08:57:27,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:57:27,682 INFO L93 Difference]: Finished difference Result 1406 states and 2320 transitions. [2020-10-13 08:57:27,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:57:27,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 08:57:27,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:57:27,693 INFO L225 Difference]: With dead ends: 1406 [2020-10-13 08:57:27,693 INFO L226 Difference]: Without dead ends: 1033 [2020-10-13 08:57:27,695 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 08:57:27,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2020-10-13 08:57:27,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 1018. [2020-10-13 08:57:27,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1018 states. [2020-10-13 08:57:27,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1528 transitions. [2020-10-13 08:57:27,736 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1528 transitions. Word has length 104 [2020-10-13 08:57:27,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:57:27,737 INFO L479 AbstractCegarLoop]: Abstraction has 1018 states and 1528 transitions. [2020-10-13 08:57:27,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:57:27,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1528 transitions. [2020-10-13 08:57:27,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 08:57:27,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:57:27,775 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:27,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:57:27,776 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:57:27,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:57:27,777 INFO L82 PathProgramCache]: Analyzing trace with hash -355222741, now seen corresponding path program 1 times [2020-10-13 08:57:27,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:57:27,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831978941] [2020-10-13 08:57:27,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:57:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:27,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:28,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:28,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:29,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:29,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 08:57:29,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:57:29,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1618 [2020-10-13 08:57:29,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:29,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:57:29,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 08:57:29,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 08:57:29,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:57:29,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:57:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:29,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:29,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:29,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:57:29,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:57:29,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:57:29,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:29,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:57:29,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:57:29,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:57:29,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:57:29,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:57:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:29,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:29,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:29,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 08:57:29,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:57:29,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 08:57:29,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:29,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:57:29,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:57:29,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 08:57:29,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:57:29,740 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:57:29,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831978941] [2020-10-13 08:57:29,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:57:29,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:57:29,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657503388] [2020-10-13 08:57:29,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:57:29,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:57:29,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:57:29,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:57:29,743 INFO L87 Difference]: Start difference. First operand 1018 states and 1528 transitions. Second operand 5 states. [2020-10-13 08:57:37,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:57:37,563 INFO L93 Difference]: Finished difference Result 1744 states and 2649 transitions. [2020-10-13 08:57:37,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:57:37,565 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-13 08:57:37,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:57:37,575 INFO L225 Difference]: With dead ends: 1744 [2020-10-13 08:57:37,576 INFO L226 Difference]: Without dead ends: 1024 [2020-10-13 08:57:37,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:57:37,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-10-13 08:57:37,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1018. [2020-10-13 08:57:37,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1018 states. [2020-10-13 08:57:37,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1525 transitions. [2020-10-13 08:57:37,628 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1525 transitions. Word has length 106 [2020-10-13 08:57:37,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:57:37,630 INFO L479 AbstractCegarLoop]: Abstraction has 1018 states and 1525 transitions. [2020-10-13 08:57:37,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:57:37,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1525 transitions. [2020-10-13 08:57:37,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 08:57:37,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:57:37,641 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:37,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:57:37,641 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:57:37,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:57:37,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1307311965, now seen corresponding path program 1 times [2020-10-13 08:57:37,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:57:37,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574516431] [2020-10-13 08:57:37,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:57:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:37,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:37,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:38,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:38,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:38,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 08:57:38,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:57:38,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 903 [2020-10-13 08:57:38,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:38,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:57:38,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 08:57:38,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 08:57:38,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:57:38,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:57:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:38,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:38,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:38,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:57:38,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:57:38,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:57:38,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:38,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:57:38,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:57:38,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:57:38,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:57:38,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:57:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:38,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:38,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:38,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:57:38,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:57:38,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 08:57:38,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:38,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:57:38,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:57:38,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:57:38,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:57:38,947 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:57:38,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574516431] [2020-10-13 08:57:38,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:57:38,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:57:38,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870127269] [2020-10-13 08:57:38,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:57:38,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:57:38,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:57:38,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:57:38,953 INFO L87 Difference]: Start difference. First operand 1018 states and 1525 transitions. Second operand 5 states. [2020-10-13 08:57:48,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:57:48,293 INFO L93 Difference]: Finished difference Result 1740 states and 2640 transitions. [2020-10-13 08:57:48,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:57:48,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-13 08:57:48,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:57:48,307 INFO L225 Difference]: With dead ends: 1740 [2020-10-13 08:57:48,307 INFO L226 Difference]: Without dead ends: 1024 [2020-10-13 08:57:48,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 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 08:57:48,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-10-13 08:57:48,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1018. [2020-10-13 08:57:48,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1018 states. [2020-10-13 08:57:48,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1522 transitions. [2020-10-13 08:57:48,340 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1522 transitions. Word has length 110 [2020-10-13 08:57:48,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:57:48,340 INFO L479 AbstractCegarLoop]: Abstraction has 1018 states and 1522 transitions. [2020-10-13 08:57:48,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:57:48,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1522 transitions. [2020-10-13 08:57:48,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 08:57:48,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:57:48,342 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:48,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:57:48,343 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:57:48,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:57:48,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1280099867, now seen corresponding path program 1 times [2020-10-13 08:57:48,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:57:48,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838661037] [2020-10-13 08:57:48,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:57:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:48,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:48,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:49,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:49,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 08:57:49,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:57:49,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 939 [2020-10-13 08:57:49,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:49,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:57:49,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 08:57:49,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 08:57:49,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:57:49,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:57:49,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:49,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:49,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:49,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:57:49,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:57:49,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:57:49,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:49,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:57:49,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:57:49,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:57:49,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:57:49,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:57:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:49,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:49,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:49,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 08:57:49,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:57:49,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-13 08:57:49,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:49,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:57:49,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:57:49,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 08:57:49,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:57:49,636 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:57:49,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838661037] [2020-10-13 08:57:49,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:57:49,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:57:49,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573017863] [2020-10-13 08:57:49,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:57:49,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:57:49,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:57:49,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:57:49,639 INFO L87 Difference]: Start difference. First operand 1018 states and 1522 transitions. Second operand 5 states. [2020-10-13 08:57:59,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:57:59,631 INFO L93 Difference]: Finished difference Result 2404 states and 3689 transitions. [2020-10-13 08:57:59,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:57:59,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-13 08:57:59,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:57:59,649 INFO L225 Difference]: With dead ends: 2404 [2020-10-13 08:57:59,649 INFO L226 Difference]: Without dead ends: 1704 [2020-10-13 08:57:59,652 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 08:57:59,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2020-10-13 08:57:59,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1693. [2020-10-13 08:57:59,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1693 states. [2020-10-13 08:57:59,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2501 transitions. [2020-10-13 08:57:59,723 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2501 transitions. Word has length 114 [2020-10-13 08:57:59,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:57:59,724 INFO L479 AbstractCegarLoop]: Abstraction has 1693 states and 2501 transitions. [2020-10-13 08:57:59,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:57:59,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2501 transitions. [2020-10-13 08:57:59,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 08:57:59,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:57:59,726 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:59,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:57:59,726 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:57:59,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:57:59,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1666494065, now seen corresponding path program 1 times [2020-10-13 08:57:59,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:57:59,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457283888] [2020-10-13 08:57:59,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:57:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:59,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:59,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:00,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:00,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:58:00,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:58:00,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 827 [2020-10-13 08:58:00,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:00,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:58:00,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 08:58:00,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 08:58:00,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:00,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:58:00,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:00,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:00,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:00,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:58:00,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:00,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:58:00,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:00,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:00,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:00,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:00,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:00,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:58:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:00,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:00,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:00,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 08:58:00,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:00,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 08:58:00,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:00,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:58:00,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:00,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 08:58:00,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:00,819 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:58:00,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457283888] [2020-10-13 08:58:00,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:58:00,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:58:00,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932347758] [2020-10-13 08:58:00,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:58:00,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:58:00,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:58:00,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:58:00,823 INFO L87 Difference]: Start difference. First operand 1693 states and 2501 transitions. Second operand 5 states. [2020-10-13 08:58:10,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:58:10,483 INFO L93 Difference]: Finished difference Result 4329 states and 6515 transitions. [2020-10-13 08:58:10,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:58:10,485 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-13 08:58:10,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:58:10,500 INFO L225 Difference]: With dead ends: 4329 [2020-10-13 08:58:10,501 INFO L226 Difference]: Without dead ends: 2954 [2020-10-13 08:58:10,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:58:10,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2020-10-13 08:58:10,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2948. [2020-10-13 08:58:10,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2948 states. [2020-10-13 08:58:10,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2948 states to 2948 states and 3929 transitions. [2020-10-13 08:58:10,578 INFO L78 Accepts]: Start accepts. Automaton has 2948 states and 3929 transitions. Word has length 117 [2020-10-13 08:58:10,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:58:10,579 INFO L479 AbstractCegarLoop]: Abstraction has 2948 states and 3929 transitions. [2020-10-13 08:58:10,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:58:10,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2948 states and 3929 transitions. [2020-10-13 08:58:10,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 08:58:10,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:58:10,581 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:58:10,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:58:10,582 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:58:10,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:58:10,582 INFO L82 PathProgramCache]: Analyzing trace with hash 744872420, now seen corresponding path program 1 times [2020-10-13 08:58:10,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:58:10,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468212321] [2020-10-13 08:58:10,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:58:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:10,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:10,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:11,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:11,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:11,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:58:11,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:58:11,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 689 [2020-10-13 08:58:11,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:11,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:58:11,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 08:58:11,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 08:58:11,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:58:11,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:58:11,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:11,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:11,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:11,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:58:11,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:11,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:58:11,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:11,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:11,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:11,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:11,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:11,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:58:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:11,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:11,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:11,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 08:58:11,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:11,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 08:58:11,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:11,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:58:11,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:11,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 08:58:11,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:58:11,514 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:58:11,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468212321] [2020-10-13 08:58:11,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:58:11,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:58:11,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295523928] [2020-10-13 08:58:11,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:58:11,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:58:11,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:58:11,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:58:11,517 INFO L87 Difference]: Start difference. First operand 2948 states and 3929 transitions. Second operand 5 states. [2020-10-13 08:58:20,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:58:20,215 INFO L93 Difference]: Finished difference Result 7140 states and 9632 transitions. [2020-10-13 08:58:20,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:58:20,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-13 08:58:20,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:58:20,237 INFO L225 Difference]: With dead ends: 7140 [2020-10-13 08:58:20,237 INFO L226 Difference]: Without dead ends: 4510 [2020-10-13 08:58:20,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 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 08:58:20,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4510 states. [2020-10-13 08:58:20,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4510 to 4500. [2020-10-13 08:58:20,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4500 states. [2020-10-13 08:58:20,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4500 states to 4500 states and 5955 transitions. [2020-10-13 08:58:20,367 INFO L78 Accepts]: Start accepts. Automaton has 4500 states and 5955 transitions. Word has length 122 [2020-10-13 08:58:20,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:58:20,367 INFO L479 AbstractCegarLoop]: Abstraction has 4500 states and 5955 transitions. [2020-10-13 08:58:20,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:58:20,368 INFO L276 IsEmpty]: Start isEmpty. Operand 4500 states and 5955 transitions. [2020-10-13 08:58:20,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 08:58:20,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:58:20,370 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:58:20,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:58:20,371 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:58:20,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:58:20,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1472005980, now seen corresponding path program 1 times [2020-10-13 08:58:20,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:58:20,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402878914] [2020-10-13 08:58:20,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:58:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:20,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:20,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:20,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:21,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:21,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 08:58:21,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:58:21,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1237 [2020-10-13 08:58:21,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:21,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:58:21,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-13 08:58:21,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 08:58:21,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:58:21,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:58:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:21,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:21,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:21,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:58:21,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:21,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:58:21,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:21,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:21,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:21,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:21,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:21,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:58:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:21,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:21,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:21,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 08:58:21,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:21,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 08:58:21,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:21,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:58:21,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:21,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 08:58:21,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:21,886 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:58:21,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402878914] [2020-10-13 08:58:21,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:58:21,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:58:21,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629979508] [2020-10-13 08:58:21,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:58:21,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:58:21,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:58:21,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:58:21,889 INFO L87 Difference]: Start difference. First operand 4500 states and 5955 transitions. Second operand 5 states. [2020-10-13 08:58:32,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:58:32,389 INFO L93 Difference]: Finished difference Result 9972 states and 13490 transitions. [2020-10-13 08:58:32,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:58:32,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-13 08:58:32,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:58:32,422 INFO L225 Difference]: With dead ends: 9972 [2020-10-13 08:58:32,423 INFO L226 Difference]: Without dead ends: 6099 [2020-10-13 08:58:32,434 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 08:58:32,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6099 states. [2020-10-13 08:58:32,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6099 to 6069. [2020-10-13 08:58:32,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6069 states. [2020-10-13 08:58:32,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6069 states to 6069 states and 7937 transitions. [2020-10-13 08:58:32,629 INFO L78 Accepts]: Start accepts. Automaton has 6069 states and 7937 transitions. Word has length 126 [2020-10-13 08:58:32,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:58:32,629 INFO L479 AbstractCegarLoop]: Abstraction has 6069 states and 7937 transitions. [2020-10-13 08:58:32,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:58:32,630 INFO L276 IsEmpty]: Start isEmpty. Operand 6069 states and 7937 transitions. [2020-10-13 08:58:32,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-13 08:58:32,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:58:32,633 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:58:32,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:58:32,633 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:58:32,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:58:32,634 INFO L82 PathProgramCache]: Analyzing trace with hash 750425292, now seen corresponding path program 1 times [2020-10-13 08:58:32,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:58:32,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422434027] [2020-10-13 08:58:32,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:58:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:32,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:32,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:32,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:33,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:33,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:33,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 08:58:33,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:58:33,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 905 [2020-10-13 08:58:33,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:33,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:58:33,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 08:58:33,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 08:58:33,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:33,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:58:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:33,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:33,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:33,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:58:33,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:33,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:58:33,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:33,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:33,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:33,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:33,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:33,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:58:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:33,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:33,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:33,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 08:58:33,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:33,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 08:58:33,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:33,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:58:33,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:33,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-13 08:58:33,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:33,848 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:58:33,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422434027] [2020-10-13 08:58:33,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:58:33,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:58:33,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142016062] [2020-10-13 08:58:33,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:58:33,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:58:33,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:58:33,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:58:33,856 INFO L87 Difference]: Start difference. First operand 6069 states and 7937 transitions. Second operand 5 states. [2020-10-13 08:58:45,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:58:45,363 INFO L93 Difference]: Finished difference Result 13995 states and 18899 transitions. [2020-10-13 08:58:45,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:58:45,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-13 08:58:45,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:58:45,404 INFO L225 Difference]: With dead ends: 13995 [2020-10-13 08:58:45,405 INFO L226 Difference]: Without dead ends: 8553 [2020-10-13 08:58:45,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:58:45,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8553 states. [2020-10-13 08:58:45,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8553 to 8545. [2020-10-13 08:58:45,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8545 states. [2020-10-13 08:58:45,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8545 states to 8545 states and 11038 transitions. [2020-10-13 08:58:45,625 INFO L78 Accepts]: Start accepts. Automaton has 8545 states and 11038 transitions. Word has length 133 [2020-10-13 08:58:45,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:58:45,626 INFO L479 AbstractCegarLoop]: Abstraction has 8545 states and 11038 transitions. [2020-10-13 08:58:45,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:58:45,626 INFO L276 IsEmpty]: Start isEmpty. Operand 8545 states and 11038 transitions. [2020-10-13 08:58:45,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-13 08:58:45,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:58:45,629 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:58:45,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:58:45,630 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:58:45,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:58:45,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1442540612, now seen corresponding path program 1 times [2020-10-13 08:58:45,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:58:45,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477085139] [2020-10-13 08:58:45,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:58:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:45,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:45,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:46,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:46,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:47,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:47,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:58:47,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:58:47,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1609 [2020-10-13 08:58:47,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:47,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:58:47,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-13 08:58:47,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 08:58:47,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:47,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:58:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:47,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:47,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:47,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:58:47,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:47,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:58:47,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:47,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:47,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:47,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:47,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:47,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:58:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:47,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:47,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:47,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 08:58:47,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:47,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 08:58:47,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:47,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:58:47,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:47,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-13 08:58:47,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:47,639 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:58:47,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477085139] [2020-10-13 08:58:47,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:58:47,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:58:47,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823406179] [2020-10-13 08:58:47,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:58:47,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:58:47,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:58:47,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:58:47,643 INFO L87 Difference]: Start difference. First operand 8545 states and 11038 transitions. Second operand 5 states. [2020-10-13 08:58:54,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:58:54,999 INFO L93 Difference]: Finished difference Result 16479 states and 21285 transitions. [2020-10-13 08:58:55,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:58:55,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-13 08:58:55,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:58:55,030 INFO L225 Difference]: With dead ends: 16479 [2020-10-13 08:58:55,031 INFO L226 Difference]: Without dead ends: 8553 [2020-10-13 08:58:55,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:58:55,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8553 states. [2020-10-13 08:58:55,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8553 to 8545. [2020-10-13 08:58:55,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8545 states. [2020-10-13 08:58:55,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8545 states to 8545 states and 11024 transitions. [2020-10-13 08:58:55,262 INFO L78 Accepts]: Start accepts. Automaton has 8545 states and 11024 transitions. Word has length 138 [2020-10-13 08:58:55,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:58:55,263 INFO L479 AbstractCegarLoop]: Abstraction has 8545 states and 11024 transitions. [2020-10-13 08:58:55,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:58:55,263 INFO L276 IsEmpty]: Start isEmpty. Operand 8545 states and 11024 transitions. [2020-10-13 08:58:55,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-13 08:58:55,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:58:55,268 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:58:55,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:58:55,269 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:58:55,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:58:55,270 INFO L82 PathProgramCache]: Analyzing trace with hash -812012749, now seen corresponding path program 1 times [2020-10-13 08:58:55,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:58:55,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269608291] [2020-10-13 08:58:55,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:58:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:55,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:55,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:55,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 08:58:55,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:55,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-13 08:58:55,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:55,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:58:55,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:58:55,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 08:58:55,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:55,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:58:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:55,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:55,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:55,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:58:55,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:55,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:58:55,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:55,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:58:55,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:55,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:58:55,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:55,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:58:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:55,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:55,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:55,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 08:58:55,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:55,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-13 08:58:55,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:55,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:58:55,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:58:55,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 08:58:55,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:56,124 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:58:56,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269608291] [2020-10-13 08:58:56,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:58:56,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 08:58:56,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606432716] [2020-10-13 08:58:56,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:58:56,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:58:56,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:58:56,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:58:56,128 INFO L87 Difference]: Start difference. First operand 8545 states and 11024 transitions. Second operand 8 states. [2020-10-13 08:59:06,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:59:06,255 INFO L93 Difference]: Finished difference Result 16821 states and 21845 transitions. [2020-10-13 08:59:06,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 08:59:06,263 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 141 [2020-10-13 08:59:06,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:59:06,293 INFO L225 Difference]: With dead ends: 16821 [2020-10-13 08:59:06,293 INFO L226 Difference]: Without dead ends: 8282 [2020-10-13 08:59:06,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:59:06,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8282 states. [2020-10-13 08:59:06,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8282 to 8282. [2020-10-13 08:59:06,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8282 states. [2020-10-13 08:59:06,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8282 states to 8282 states and 10712 transitions. [2020-10-13 08:59:06,517 INFO L78 Accepts]: Start accepts. Automaton has 8282 states and 10712 transitions. Word has length 141 [2020-10-13 08:59:06,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:59:06,517 INFO L479 AbstractCegarLoop]: Abstraction has 8282 states and 10712 transitions. [2020-10-13 08:59:06,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:59:06,518 INFO L276 IsEmpty]: Start isEmpty. Operand 8282 states and 10712 transitions. [2020-10-13 08:59:06,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-13 08:59:06,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:59:06,521 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:06,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:59:06,521 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:59:06,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:59:06,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1909890777, now seen corresponding path program 1 times [2020-10-13 08:59:06,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:59:06,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802547012] [2020-10-13 08:59:06,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:59:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:06,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:06,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:07,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:07,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-13 08:59:07,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:59:07,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 927 [2020-10-13 08:59:07,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:07,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:59:07,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-13 08:59:07,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 08:59:07,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:07,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:59:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:07,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:07,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:07,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:59:07,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:07,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 08:59:07,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:07,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:07,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:07,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:07,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 08:59:07,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:59:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:07,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:07,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:07,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 08:59:07,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:07,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-13 08:59:07,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:07,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:59:07,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:07,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 08:59:07,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:07,900 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:59:07,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802547012] [2020-10-13 08:59:07,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:59:07,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:59:07,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198936337] [2020-10-13 08:59:07,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:59:07,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:59:07,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:59:07,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:59:07,903 INFO L87 Difference]: Start difference. First operand 8282 states and 10712 transitions. Second operand 6 states. [2020-10-13 08:59:20,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:59:20,361 INFO L93 Difference]: Finished difference Result 18743 states and 25286 transitions. [2020-10-13 08:59:20,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:59:20,364 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2020-10-13 08:59:20,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:59:20,406 INFO L225 Difference]: With dead ends: 18743 [2020-10-13 08:59:20,406 INFO L226 Difference]: Without dead ends: 10775 [2020-10-13 08:59:20,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:59:20,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10775 states. [2020-10-13 08:59:20,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10775 to 10766. [2020-10-13 08:59:20,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10766 states. [2020-10-13 08:59:20,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10766 states to 10766 states and 14578 transitions. [2020-10-13 08:59:20,759 INFO L78 Accepts]: Start accepts. Automaton has 10766 states and 14578 transitions. Word has length 163 [2020-10-13 08:59:20,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:59:20,760 INFO L479 AbstractCegarLoop]: Abstraction has 10766 states and 14578 transitions. [2020-10-13 08:59:20,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:59:20,760 INFO L276 IsEmpty]: Start isEmpty. Operand 10766 states and 14578 transitions. [2020-10-13 08:59:20,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-13 08:59:20,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:59:20,768 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:20,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 08:59:20,769 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:59:20,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:59:20,769 INFO L82 PathProgramCache]: Analyzing trace with hash 820767802, now seen corresponding path program 1 times [2020-10-13 08:59:20,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:59:20,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347472082] [2020-10-13 08:59:20,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:59:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:20,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:20,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:21,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:22,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:22,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 08:59:22,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:59:22,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1684 [2020-10-13 08:59:22,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:22,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:59:22,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-13 08:59:22,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 08:59:22,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:22,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:59:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:22,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:22,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:22,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:59:22,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:22,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:59:22,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:22,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:22,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:22,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:22,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:22,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:59:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:22,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:22,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:22,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 08:59:22,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:22,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-13 08:59:22,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:22,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:59:22,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:22,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-13 08:59:22,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:23,013 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:59:23,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347472082] [2020-10-13 08:59:23,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:59:23,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:59:23,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813590941] [2020-10-13 08:59:23,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:59:23,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:59:23,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:59:23,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:59:23,017 INFO L87 Difference]: Start difference. First operand 10766 states and 14578 transitions. Second operand 5 states. [2020-10-13 08:59:32,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:59:32,971 INFO L93 Difference]: Finished difference Result 21226 states and 28868 transitions. [2020-10-13 08:59:32,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:59:32,977 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-10-13 08:59:32,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:59:33,026 INFO L225 Difference]: With dead ends: 21226 [2020-10-13 08:59:33,027 INFO L226 Difference]: Without dead ends: 10766 [2020-10-13 08:59:33,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:59:33,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10766 states. [2020-10-13 08:59:33,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10766 to 10766. [2020-10-13 08:59:33,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10766 states. [2020-10-13 08:59:33,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10766 states to 10766 states and 14567 transitions. [2020-10-13 08:59:33,539 INFO L78 Accepts]: Start accepts. Automaton has 10766 states and 14567 transitions. Word has length 186 [2020-10-13 08:59:33,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:59:33,539 INFO L479 AbstractCegarLoop]: Abstraction has 10766 states and 14567 transitions. [2020-10-13 08:59:33,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:59:33,539 INFO L276 IsEmpty]: Start isEmpty. Operand 10766 states and 14567 transitions. [2020-10-13 08:59:33,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-13 08:59:33,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:59:33,547 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:59:33,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 08:59:33,548 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:59:33,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:59:33,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1041926642, now seen corresponding path program 1 times [2020-10-13 08:59:33,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:59:33,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786650224] [2020-10-13 08:59:33,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:59:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:33,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:33,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:33,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:37,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:37,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-13 08:59:37,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:59:37,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3573 [2020-10-13 08:59:37,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:37,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:59:37,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 08:59:37,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 08:59:37,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:37,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:59:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:37,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:37,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:37,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:59:37,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:37,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:59:37,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:37,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:37,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:37,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:37,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:37,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:59:37,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:37,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:37,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:37,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 08:59:37,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:37,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 08:59:37,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:37,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:59:37,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:37,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 08:59:37,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:59:37,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 08:59:37,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:37,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:37,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:37,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:37,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 08:59:37,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:59:37,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 473 [2020-10-13 08:59:37,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:37,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:59:37,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:59:37,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 08:59:37,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:38,144 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:59:38,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786650224] [2020-10-13 08:59:38,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:59:38,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:59:38,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547372878] [2020-10-13 08:59:38,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:59:38,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:59:38,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:59:38,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:59:38,148 INFO L87 Difference]: Start difference. First operand 10766 states and 14567 transitions. Second operand 7 states. [2020-10-13 08:59:55,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:59:55,024 INFO L93 Difference]: Finished difference Result 23419 states and 34903 transitions. [2020-10-13 08:59:55,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:59:55,031 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 224 [2020-10-13 08:59:55,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:59:55,114 INFO L225 Difference]: With dead ends: 23419 [2020-10-13 08:59:55,115 INFO L226 Difference]: Without dead ends: 12967 [2020-10-13 08:59:55,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:59:55,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12967 states. [2020-10-13 08:59:55,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12967 to 12827. [2020-10-13 08:59:55,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12827 states. [2020-10-13 08:59:55,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12827 states to 12827 states and 18453 transitions. [2020-10-13 08:59:55,553 INFO L78 Accepts]: Start accepts. Automaton has 12827 states and 18453 transitions. Word has length 224 [2020-10-13 08:59:55,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:59:55,554 INFO L479 AbstractCegarLoop]: Abstraction has 12827 states and 18453 transitions. [2020-10-13 08:59:55,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:59:55,554 INFO L276 IsEmpty]: Start isEmpty. Operand 12827 states and 18453 transitions. [2020-10-13 08:59:55,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-13 08:59:55,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:59:55,564 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:59:55,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 08:59:55,564 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:59:55,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:59:55,565 INFO L82 PathProgramCache]: Analyzing trace with hash 2106315947, now seen corresponding path program 1 times [2020-10-13 08:59:55,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:59:55,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178634953] [2020-10-13 08:59:55,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:59:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:55,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:56,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:57,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:57,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-13 08:59:57,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:59:57,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2167 [2020-10-13 08:59:57,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:57,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:59:57,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-13 08:59:57,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 08:59:57,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:57,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:59:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:57,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:57,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:57,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:59:57,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:57,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:59:57,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:57,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:57,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:57,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:57,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:57,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:59:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:57,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:58,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:58,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 08:59:58,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:58,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 08:59:58,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:58,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:59:58,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:58,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 08:59:58,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:58,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-13 08:59:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:58,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:58,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:58,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 08:59:58,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:58,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 08:59:58,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:58,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:59:58,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:59:58,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:59:58,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:58,338 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 95 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:59:58,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178634953] [2020-10-13 08:59:58,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:59:58,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:59:58,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142010093] [2020-10-13 08:59:58,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:59:58,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:59:58,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:59:58,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:59:58,340 INFO L87 Difference]: Start difference. First operand 12827 states and 18453 transitions. Second operand 8 states. [2020-10-13 09:00:16,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:00:16,925 INFO L93 Difference]: Finished difference Result 33731 states and 52672 transitions. [2020-10-13 09:00:16,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 09:00:16,931 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 232 [2020-10-13 09:00:16,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:00:17,049 INFO L225 Difference]: With dead ends: 33731 [2020-10-13 09:00:17,049 INFO L226 Difference]: Without dead ends: 21218 [2020-10-13 09:00:17,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-13 09:00:17,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21218 states. [2020-10-13 09:00:17,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21218 to 20846. [2020-10-13 09:00:17,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20846 states. [2020-10-13 09:00:17,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20846 states to 20846 states and 33529 transitions. [2020-10-13 09:00:17,789 INFO L78 Accepts]: Start accepts. Automaton has 20846 states and 33529 transitions. Word has length 232 [2020-10-13 09:00:17,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:00:17,790 INFO L479 AbstractCegarLoop]: Abstraction has 20846 states and 33529 transitions. [2020-10-13 09:00:17,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:00:17,790 INFO L276 IsEmpty]: Start isEmpty. Operand 20846 states and 33529 transitions. [2020-10-13 09:00:17,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-13 09:00:17,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:00:17,800 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 09:00:17,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:00:17,801 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:00:17,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:00:17,801 INFO L82 PathProgramCache]: Analyzing trace with hash -535550296, now seen corresponding path program 1 times [2020-10-13 09:00:17,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:00:17,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571215127] [2020-10-13 09:00:17,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:00:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:17,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:18,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:19,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:19,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:21,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:21,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-13 09:00:21,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:00:21,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3785 [2020-10-13 09:00:21,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:21,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:00:21,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 219 [2020-10-13 09:00:21,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 09:00:21,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:21,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:00:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:21,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:21,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:21,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:00:21,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:21,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:00:21,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:21,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:21,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:21,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:21,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:21,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:00:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:21,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:21,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:21,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:00:21,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:21,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:00:21,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:21,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:21,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:21,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:21,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:22,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-13 09:00:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:22,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:22,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:22,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 09:00:22,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:22,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 09:00:22,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:22,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:00:22,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:22,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:00:22,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:22,343 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-13 09:00:22,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571215127] [2020-10-13 09:00:22,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:00:22,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:00:22,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610806492] [2020-10-13 09:00:22,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:00:22,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:00:22,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:00:22,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:00:22,346 INFO L87 Difference]: Start difference. First operand 20846 states and 33529 transitions. Second operand 5 states. [2020-10-13 09:00:35,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:00:35,444 INFO L93 Difference]: Finished difference Result 39379 states and 61497 transitions. [2020-10-13 09:00:35,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:00:35,447 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 241 [2020-10-13 09:00:35,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:00:35,575 INFO L225 Difference]: With dead ends: 39379 [2020-10-13 09:00:35,575 INFO L226 Difference]: Without dead ends: 20846 [2020-10-13 09:00:35,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:00:35,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20846 states. [2020-10-13 09:00:36,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20846 to 20846. [2020-10-13 09:00:36,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20846 states. [2020-10-13 09:00:36,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20846 states to 20846 states and 33502 transitions. [2020-10-13 09:00:36,504 INFO L78 Accepts]: Start accepts. Automaton has 20846 states and 33502 transitions. Word has length 241 [2020-10-13 09:00:36,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:00:36,505 INFO L479 AbstractCegarLoop]: Abstraction has 20846 states and 33502 transitions. [2020-10-13 09:00:36,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:00:36,505 INFO L276 IsEmpty]: Start isEmpty. Operand 20846 states and 33502 transitions. [2020-10-13 09:00:36,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-13 09:00:36,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:00:36,524 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:00:36,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:00:36,524 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:00:36,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:00:36,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1241155288, now seen corresponding path program 1 times [2020-10-13 09:00:36,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:00:36,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591835637] [2020-10-13 09:00:36,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:00:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:36,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:36,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:37,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:37,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:38,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:41,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:41,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-13 09:00:41,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:00:41,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4976 [2020-10-13 09:00:41,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:41,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:00:41,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 261 [2020-10-13 09:00:41,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 09:00:41,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:41,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:00:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:41,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:41,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:41,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:00:41,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:41,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:00:41,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:41,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:41,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:41,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:41,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:41,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:00:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:41,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:41,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:41,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:00:41,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:41,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 09:00:41,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:41,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:41,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:41,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:41,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:41,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 09:00:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:41,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:41,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:41,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 09:00:41,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:41,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-13 09:00:41,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:41,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:00:41,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:41,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-13 09:00:41,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:41,934 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-13 09:00:41,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591835637] [2020-10-13 09:00:41,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:00:41,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:00:41,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584385884] [2020-10-13 09:00:41,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:00:41,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:00:41,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:00:41,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:00:41,937 INFO L87 Difference]: Start difference. First operand 20846 states and 33502 transitions. Second operand 5 states.