/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/Problem18_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:51:38,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:51:38,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:51:38,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:51:38,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:51:38,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:51:38,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:51:38,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:51:38,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:51:38,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:51:38,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:51:38,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:51:38,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:51:38,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:51:38,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:51:38,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:51:38,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:51:38,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:51:38,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:51:38,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:51:38,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:51:38,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:51:38,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:51:38,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:51:38,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:51:38,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:51:38,498 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:51:38,499 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:51:38,500 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:51:38,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:51:38,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:51:38,504 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:51:38,505 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:51:38,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:51:38,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:51:38,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:51:38,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:51:38,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:51:38,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:51:38,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:51:38,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:51:38,514 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 09:51:38,576 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:51:38,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:51:38,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:51:38,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:51:38,581 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:51:38,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:51:38,581 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:51:38,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:51:38,582 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:51:38,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:51:38,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:51:38,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:51:38,585 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:51:38,585 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:51:38,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:51:38,586 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:51:38,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:51:38,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:51:38,586 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:51:38,587 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:51:38,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:51:38,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:51:38,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:51:38,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:51:38,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:51:38,590 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:51:38,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:51:38,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:51:38,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:51:38,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:51:38,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:51:38,937 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:51:38,941 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:51:38,943 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:51:38,943 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:51:38,944 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label38.c [2020-10-13 09:51:39,011 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e4d6e858/d377ccf6759941ba8ec8371031362df1/FLAGfaeb81e1f [2020-10-13 09:51:39,746 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:51:39,747 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label38.c [2020-10-13 09:51:39,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e4d6e858/d377ccf6759941ba8ec8371031362df1/FLAGfaeb81e1f [2020-10-13 09:51:39,844 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e4d6e858/d377ccf6759941ba8ec8371031362df1 [2020-10-13 09:51:39,857 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:51:39,859 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:51:39,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:51:39,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:51:39,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:51:39,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:51:39" (1/1) ... [2020-10-13 09:51:39,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b309059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:51:39, skipping insertion in model container [2020-10-13 09:51:39,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:51:39" (1/1) ... [2020-10-13 09:51:39,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:51:40,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:51:41,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:51:41,497 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:51:42,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:51:42,087 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:51:42,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:51:42 WrapperNode [2020-10-13 09:51:42,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:51:42,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:51:42,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:51:42,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:51:42,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:51:42" (1/1) ... [2020-10-13 09:51:42,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:51:42" (1/1) ... [2020-10-13 09:51:42,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:51:42" (1/1) ... [2020-10-13 09:51:42,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:51:42" (1/1) ... [2020-10-13 09:51:42,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:51:42" (1/1) ... [2020-10-13 09:51:42,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:51:42" (1/1) ... [2020-10-13 09:51:42,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:51:42" (1/1) ... [2020-10-13 09:51:42,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:51:42,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:51:42,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:51:42,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:51:42,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:51:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:51:42,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:51:42,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:51:42,433 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:51:42,434 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:51:42,434 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 09:51:42,434 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:51:42,434 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:51:42,435 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:51:42,435 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 09:51:42,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:51:42,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:51:42,435 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:51:42,436 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:51:42,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:51:42,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:51:48,536 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:51:48,537 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:51:48,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:51:48 BoogieIcfgContainer [2020-10-13 09:51:48,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:51:48,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:51:48,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:51:48,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:51:48,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:51:39" (1/3) ... [2020-10-13 09:51:48,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e475e28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:51:48, skipping insertion in model container [2020-10-13 09:51:48,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:51:42" (2/3) ... [2020-10-13 09:51:48,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e475e28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:51:48, skipping insertion in model container [2020-10-13 09:51:48,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:51:48" (3/3) ... [2020-10-13 09:51:48,556 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label38.c [2020-10-13 09:51:48,568 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:51:48,577 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:51:48,592 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:51:48,618 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:51:48,619 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:51:48,619 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:51:48,619 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:51:48,619 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:51:48,619 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:51:48,620 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:51:48,620 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:51:48,656 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-13 09:51:48,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 09:51:48,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:48,666 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] [2020-10-13 09:51:48,667 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:48,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:48,675 INFO L82 PathProgramCache]: Analyzing trace with hash 2095199465, now seen corresponding path program 1 times [2020-10-13 09:51:48,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:48,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934777774] [2020-10-13 09:51:48,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:48,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:49,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:49,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 09:51:49,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:49,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-13 09:51:49,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:49,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:51:49,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:51:49,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 09:51:49,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:51:49,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:49,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:49,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:49,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:49,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:49,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:51:49,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:49,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:49,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:49,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:51:49,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:49,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:51:49,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934777774] [2020-10-13 09:51:49,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:51:49,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:51:49,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766708385] [2020-10-13 09:51:49,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:51:49,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:49,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:51:49,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:51:49,346 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-13 09:51:56,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:56,976 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-13 09:51:56,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:51:56,979 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-13 09:51:56,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:57,024 INFO L225 Difference]: With dead ends: 2270 [2020-10-13 09:51:57,024 INFO L226 Difference]: Without dead ends: 1432 [2020-10-13 09:51:57,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:51:57,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-13 09:51:57,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-13 09:51:57,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-13 09:51:57,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2229 transitions. [2020-10-13 09:51:57,224 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2229 transitions. Word has length 26 [2020-10-13 09:51:57,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:57,225 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2229 transitions. [2020-10-13 09:51:57,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:51:57,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2229 transitions. [2020-10-13 09:51:57,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 09:51:57,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:57,230 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:51:57,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:51:57,231 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:57,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:57,232 INFO L82 PathProgramCache]: Analyzing trace with hash 978092004, now seen corresponding path program 1 times [2020-10-13 09:51:57,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:57,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622183226] [2020-10-13 09:51:57,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:57,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:57,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:58,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:58,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 09:51:58,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:51:58,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 813 [2020-10-13 09:51:58,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:58,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:58,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 09:51:58,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:51:58,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:51:58,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:58,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:58,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:58,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:58,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:58,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:51:58,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:58,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:58,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:58,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:58,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:51:58,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:58,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:58,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:58,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:51:58,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:58,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 09:51:58,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:58,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:58,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:58,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:51:58,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:58,260 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:51:58,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622183226] [2020-10-13 09:51:58,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:58,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:51:58,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985208798] [2020-10-13 09:51:58,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:51:58,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:58,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:51:58,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:51:58,264 INFO L87 Difference]: Start difference. First operand 1425 states and 2229 transitions. Second operand 5 states. [2020-10-13 09:52:06,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:52:06,939 INFO L93 Difference]: Finished difference Result 4276 states and 6734 transitions. [2020-10-13 09:52:06,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:52:06,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-13 09:52:06,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:52:06,959 INFO L225 Difference]: With dead ends: 4276 [2020-10-13 09:52:06,959 INFO L226 Difference]: Without dead ends: 2857 [2020-10-13 09:52:06,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:52:06,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2020-10-13 09:52:07,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 2853. [2020-10-13 09:52:07,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2853 states. [2020-10-13 09:52:07,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 4026 transitions. [2020-10-13 09:52:07,038 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 4026 transitions. Word has length 96 [2020-10-13 09:52:07,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:52:07,039 INFO L479 AbstractCegarLoop]: Abstraction has 2853 states and 4026 transitions. [2020-10-13 09:52:07,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:52:07,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 4026 transitions. [2020-10-13 09:52:07,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 09:52:07,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:52:07,042 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:52:07,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:52:07,043 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:52:07,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:52:07,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1410584092, now seen corresponding path program 1 times [2020-10-13 09:52:07,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:52:07,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127785368] [2020-10-13 09:52:07,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:52:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:07,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:07,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:07,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:07,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 09:52:07,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:52:07,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 553 [2020-10-13 09:52:07,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:07,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:52:07,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 09:52:07,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:52:07,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:07,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:52:07,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:07,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:07,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:07,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:52:07,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:07,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:52:07,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:07,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:07,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:07,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:07,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:52:07,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:52:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:07,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:07,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:07,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:52:07,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:07,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 09:52:07,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:07,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:07,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:07,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:52:07,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:07,912 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:52:07,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127785368] [2020-10-13 09:52:07,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:52:07,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:52:07,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964118246] [2020-10-13 09:52:07,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:52:07,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:52:07,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:52:07,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:52:07,914 INFO L87 Difference]: Start difference. First operand 2853 states and 4026 transitions. Second operand 6 states. [2020-10-13 09:52:18,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:52:18,524 INFO L93 Difference]: Finished difference Result 7842 states and 11356 transitions. [2020-10-13 09:52:18,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:52:18,527 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2020-10-13 09:52:18,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:52:18,553 INFO L225 Difference]: With dead ends: 7842 [2020-10-13 09:52:18,553 INFO L226 Difference]: Without dead ends: 4995 [2020-10-13 09:52:18,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:52:18,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4995 states. [2020-10-13 09:52:18,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4995 to 4991. [2020-10-13 09:52:18,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4991 states. [2020-10-13 09:52:18,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4991 states to 4991 states and 7253 transitions. [2020-10-13 09:52:18,709 INFO L78 Accepts]: Start accepts. Automaton has 4991 states and 7253 transitions. Word has length 100 [2020-10-13 09:52:18,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:52:18,710 INFO L479 AbstractCegarLoop]: Abstraction has 4991 states and 7253 transitions. [2020-10-13 09:52:18,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:52:18,710 INFO L276 IsEmpty]: Start isEmpty. Operand 4991 states and 7253 transitions. [2020-10-13 09:52:18,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 09:52:18,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:52:18,714 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:52:18,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:52:18,714 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:52:18,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:52:18,715 INFO L82 PathProgramCache]: Analyzing trace with hash 732317436, now seen corresponding path program 1 times [2020-10-13 09:52:18,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:52:18,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111225902] [2020-10-13 09:52:18,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:52:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:18,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:18,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:19,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:19,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 09:52:19,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:52:19,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 642 [2020-10-13 09:52:19,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:19,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:52:19,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 09:52:19,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:52:19,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:19,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:52:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:19,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:19,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:19,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:52:19,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:19,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:52:19,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:19,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:19,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:19,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:19,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:19,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:52:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:19,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:19,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:19,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:52:19,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:19,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 09:52:19,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:19,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:19,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:19,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 09:52:19,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:19,595 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:52:19,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111225902] [2020-10-13 09:52:19,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:52:19,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:52:19,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110694845] [2020-10-13 09:52:19,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:52:19,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:52:19,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:52:19,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:52:19,598 INFO L87 Difference]: Start difference. First operand 4991 states and 7253 transitions. Second operand 6 states. [2020-10-13 09:52:33,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:52:33,921 INFO L93 Difference]: Finished difference Result 14237 states and 22094 transitions. [2020-10-13 09:52:33,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:52:33,924 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2020-10-13 09:52:33,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:52:33,976 INFO L225 Difference]: With dead ends: 14237 [2020-10-13 09:52:33,977 INFO L226 Difference]: Without dead ends: 9252 [2020-10-13 09:52:33,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:52:34,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9252 states. [2020-10-13 09:52:34,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9252 to 7831. [2020-10-13 09:52:34,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7831 states. [2020-10-13 09:52:34,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7831 states to 7831 states and 11419 transitions. [2020-10-13 09:52:34,232 INFO L78 Accepts]: Start accepts. Automaton has 7831 states and 11419 transitions. Word has length 116 [2020-10-13 09:52:34,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:52:34,233 INFO L479 AbstractCegarLoop]: Abstraction has 7831 states and 11419 transitions. [2020-10-13 09:52:34,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:52:34,233 INFO L276 IsEmpty]: Start isEmpty. Operand 7831 states and 11419 transitions. [2020-10-13 09:52:34,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-13 09:52:34,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:52:34,238 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:52:34,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:52:34,238 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:52:34,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:52:34,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1462918212, now seen corresponding path program 1 times [2020-10-13 09:52:34,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:52:34,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544643664] [2020-10-13 09:52:34,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:52:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:34,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:34,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:34,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 09:52:34,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:34,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-13 09:52:34,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:34,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:52:34,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:52:34,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-13 09:52:34,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:34,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:52:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:34,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:34,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:34,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:52:34,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:34,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:52:34,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:34,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:34,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:34,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:52:34,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:34,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:52:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:34,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:34,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:34,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:52:34,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:34,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-13 09:52:34,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:34,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:52:34,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:52:34,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-13 09:52:34,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:52:35,075 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:52:35,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544643664] [2020-10-13 09:52:35,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:52:35,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 09:52:35,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95157472] [2020-10-13 09:52:35,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:52:35,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:52:35,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:52:35,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:52:35,078 INFO L87 Difference]: Start difference. First operand 7831 states and 11419 transitions. Second operand 7 states. [2020-10-13 09:52:47,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:52:47,490 INFO L93 Difference]: Finished difference Result 23694 states and 35363 transitions. [2020-10-13 09:52:47,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:52:47,491 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-10-13 09:52:47,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:52:47,556 INFO L225 Difference]: With dead ends: 23694 [2020-10-13 09:52:47,556 INFO L226 Difference]: Without dead ends: 15869 [2020-10-13 09:52:47,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:52:47,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15869 states. [2020-10-13 09:52:47,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15869 to 12991. [2020-10-13 09:52:47,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12991 states. [2020-10-13 09:52:47,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12991 states to 12991 states and 17565 transitions. [2020-10-13 09:52:47,967 INFO L78 Accepts]: Start accepts. Automaton has 12991 states and 17565 transitions. Word has length 176 [2020-10-13 09:52:47,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:52:47,969 INFO L479 AbstractCegarLoop]: Abstraction has 12991 states and 17565 transitions. [2020-10-13 09:52:47,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:52:47,969 INFO L276 IsEmpty]: Start isEmpty. Operand 12991 states and 17565 transitions. [2020-10-13 09:52:47,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-13 09:52:47,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:52:47,973 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:52:47,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:52:47,973 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:52:47,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:52:47,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1388897450, now seen corresponding path program 1 times [2020-10-13 09:52:47,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:52:47,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940084399] [2020-10-13 09:52:47,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:52:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:48,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:48,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:48,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:50,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:50,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-13 09:52:50,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:52:50,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2404 [2020-10-13 09:52:50,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:50,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:52:50,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-10-13 09:52:50,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:52:50,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:50,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:52:50,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:50,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:50,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:50,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:52:50,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:50,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:52:50,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:50,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:50,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:50,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:50,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:50,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:52:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:50,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:50,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:50,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:52:50,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:50,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:52:50,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:50,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:50,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:50,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:50,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:50,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 09:52:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:50,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:50,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:50,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 09:52:50,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:50,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 09:52:50,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:50,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:50,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:50,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:52:50,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:50,708 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-13 09:52:50,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940084399] [2020-10-13 09:52:50,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:52:50,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:52:50,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903815768] [2020-10-13 09:52:50,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:52:50,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:52:50,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:52:50,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:52:50,712 INFO L87 Difference]: Start difference. First operand 12991 states and 17565 transitions. Second operand 5 states. [2020-10-13 09:52:59,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:52:59,218 INFO L93 Difference]: Finished difference Result 32349 states and 45667 transitions. [2020-10-13 09:52:59,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:52:59,219 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2020-10-13 09:52:59,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:52:59,289 INFO L225 Difference]: With dead ends: 32349 [2020-10-13 09:52:59,289 INFO L226 Difference]: Without dead ends: 19364 [2020-10-13 09:52:59,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:52:59,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19364 states. [2020-10-13 09:52:59,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19364 to 19349. [2020-10-13 09:52:59,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19349 states. [2020-10-13 09:52:59,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19349 states to 19349 states and 25843 transitions. [2020-10-13 09:52:59,739 INFO L78 Accepts]: Start accepts. Automaton has 19349 states and 25843 transitions. Word has length 205 [2020-10-13 09:52:59,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:52:59,740 INFO L479 AbstractCegarLoop]: Abstraction has 19349 states and 25843 transitions. [2020-10-13 09:52:59,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:52:59,741 INFO L276 IsEmpty]: Start isEmpty. Operand 19349 states and 25843 transitions. [2020-10-13 09:52:59,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-13 09:52:59,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:52:59,753 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:52:59,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:52:59,753 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:52:59,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:52:59,754 INFO L82 PathProgramCache]: Analyzing trace with hash 560999463, now seen corresponding path program 1 times [2020-10-13 09:52:59,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:52:59,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245056514] [2020-10-13 09:52:59,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:52:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:59,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:59,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:01,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:01,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:04,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:04,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-13 09:53:04,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:53:04,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 09:53:04,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:53:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 308 [2020-10-13 09:53:04,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:53:04,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:53:04,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:53:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:04,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:04,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:04,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:53:04,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:04,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:53:04,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:04,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:04,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:04,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:04,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:04,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:53:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:05,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:05,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:05,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:53:05,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:05,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 09:53:05,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:05,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:05,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:05,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:05,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:05,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:53:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:05,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:05,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:05,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-13 09:53:05,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:05,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-13 09:53:05,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:05,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:53:05,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:05,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-13 09:53:05,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:05,371 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-13 09:53:05,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245056514] [2020-10-13 09:53:05,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:53:05,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:53:05,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295532037] [2020-10-13 09:53:05,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:53:05,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:53:05,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:53:05,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:53:05,374 INFO L87 Difference]: Start difference. First operand 19349 states and 25843 transitions. Second operand 5 states. [2020-10-13 09:53:19,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:53:19,678 INFO L93 Difference]: Finished difference Result 38707 states and 51771 transitions. [2020-10-13 09:53:19,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:53:19,680 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2020-10-13 09:53:19,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:53:19,737 INFO L225 Difference]: With dead ends: 38707 [2020-10-13 09:53:19,737 INFO L226 Difference]: Without dead ends: 19364 [2020-10-13 09:53:19,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:53:19,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19364 states. [2020-10-13 09:53:20,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19364 to 18647. [2020-10-13 09:53:20,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18647 states. [2020-10-13 09:53:20,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18647 states to 18647 states and 22457 transitions. [2020-10-13 09:53:20,151 INFO L78 Accepts]: Start accepts. Automaton has 18647 states and 22457 transitions. Word has length 322 [2020-10-13 09:53:20,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:53:20,152 INFO L479 AbstractCegarLoop]: Abstraction has 18647 states and 22457 transitions. [2020-10-13 09:53:20,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:53:20,152 INFO L276 IsEmpty]: Start isEmpty. Operand 18647 states and 22457 transitions. [2020-10-13 09:53:20,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-13 09:53:20,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:53:20,168 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:53:20,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:53:20,169 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:53:20,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:53:20,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1917502198, now seen corresponding path program 1 times [2020-10-13 09:53:20,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:53:20,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656238232] [2020-10-13 09:53:20,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:53:20,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:20,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:20,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:21,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:24,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:24,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-13 09:53:24,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:53:24,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3901 [2020-10-13 09:53:24,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:24,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:53:24,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 09:53:24,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:53:24,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:53:24,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:53:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:24,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:24,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:24,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:53:24,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:24,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:53:24,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:24,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:24,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:24,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:24,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:24,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:53:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:24,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:24,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:24,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:53:24,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:24,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 09:53:24,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:24,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:53:24,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:24,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 09:53:24,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:24,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:53:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:24,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:24,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:24,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:53:24,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:24,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 09:53:24,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:24,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:53:24,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:53:24,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:53:24,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:24,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-13 09:53:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:24,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:24,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:24,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:53:24,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:24,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 09:53:24,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:24,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:24,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-13 09:53:24,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:24,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:25,024 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 132 proven. 73 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-13 09:53:25,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656238232] [2020-10-13 09:53:25,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:53:25,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:53:25,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917602680] [2020-10-13 09:53:25,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:53:25,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:53:25,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:53:25,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:53:25,028 INFO L87 Difference]: Start difference. First operand 18647 states and 22457 transitions. Second operand 7 states. [2020-10-13 09:53:40,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:53:40,993 INFO L93 Difference]: Finished difference Result 46865 states and 57714 transitions. [2020-10-13 09:53:40,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:53:40,994 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 372 [2020-10-13 09:53:40,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:53:41,064 INFO L225 Difference]: With dead ends: 46865 [2020-10-13 09:53:41,064 INFO L226 Difference]: Without dead ends: 26730 [2020-10-13 09:53:41,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:53:41,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26730 states. [2020-10-13 09:53:41,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26730 to 26004. [2020-10-13 09:53:41,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26004 states. [2020-10-13 09:53:41,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26004 states to 26004 states and 29476 transitions. [2020-10-13 09:53:41,533 INFO L78 Accepts]: Start accepts. Automaton has 26004 states and 29476 transitions. Word has length 372 [2020-10-13 09:53:41,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:53:41,533 INFO L479 AbstractCegarLoop]: Abstraction has 26004 states and 29476 transitions. [2020-10-13 09:53:41,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:53:41,534 INFO L276 IsEmpty]: Start isEmpty. Operand 26004 states and 29476 transitions. [2020-10-13 09:53:41,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2020-10-13 09:53:41,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:53:41,555 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:53:41,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:53:41,556 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:53:41,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:53:41,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1519627574, now seen corresponding path program 1 times [2020-10-13 09:53:41,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:53:41,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334902565] [2020-10-13 09:53:41,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:53:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:41,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:41,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:43,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:45,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:45,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 418 [2020-10-13 09:53:45,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:53:45,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3842 [2020-10-13 09:53:45,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:45,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:53:45,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 09:53:45,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-13 09:53:45,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:45,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:53:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:45,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:45,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:45,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:53:45,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:45,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:53:45,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:45,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:45,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:45,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:45,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:53:45,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:53:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:45,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:45,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:45,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:53:45,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:45,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 09:53:45,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:45,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:53:45,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:45,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 09:53:45,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:53:45,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:53:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:45,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:45,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:45,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 09:53:45,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:45,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-13 09:53:45,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:45,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:53:45,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:53:45,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 09:53:45,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:45,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-13 09:53:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:46,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:46,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:46,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:53:46,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:46,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 09:53:46,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:46,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:46,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-13 09:53:46,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:46,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:46,487 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 164 proven. 105 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-13 09:53:46,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334902565] [2020-10-13 09:53:46,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:53:46,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:53:46,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853563715] [2020-10-13 09:53:46,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:53:46,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:53:46,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:53:46,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:53:46,495 INFO L87 Difference]: Start difference. First operand 26004 states and 29476 transitions. Second operand 7 states. [2020-10-13 09:53:58,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:53:58,695 INFO L93 Difference]: Finished difference Result 62562 states and 74055 transitions. [2020-10-13 09:53:58,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:53:58,697 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 404 [2020-10-13 09:53:58,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:53:58,818 INFO L225 Difference]: With dead ends: 62562 [2020-10-13 09:53:58,818 INFO L226 Difference]: Without dead ends: 36568 [2020-10-13 09:53:58,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:53:58,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36568 states. [2020-10-13 09:53:59,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36568 to 36344. [2020-10-13 09:53:59,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36344 states. [2020-10-13 09:53:59,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36344 states to 36344 states and 41688 transitions. [2020-10-13 09:53:59,479 INFO L78 Accepts]: Start accepts. Automaton has 36344 states and 41688 transitions. Word has length 404 [2020-10-13 09:53:59,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:53:59,479 INFO L479 AbstractCegarLoop]: Abstraction has 36344 states and 41688 transitions. [2020-10-13 09:53:59,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:53:59,479 INFO L276 IsEmpty]: Start isEmpty. Operand 36344 states and 41688 transitions. [2020-10-13 09:53:59,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2020-10-13 09:53:59,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:53:59,510 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 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 09:53:59,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:53:59,511 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:53:59,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:53:59,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1065657587, now seen corresponding path program 1 times [2020-10-13 09:53:59,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:53:59,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497708427] [2020-10-13 09:53:59,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:53:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:59,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:59,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:00,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:04,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:04,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 490 [2020-10-13 09:54:04,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:54:04,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 09:54:04,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:04,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:54:04,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:54:04,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 09:54:04,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:04,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:54:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:04,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:04,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:04,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:54:04,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:04,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 09:54:04,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:04,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:54:04,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:54:04,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:54:04,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:04,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:54:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:04,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:04,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:04,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:54:04,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:04,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 09:54:04,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:04,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:54:04,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:54:04,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 09:54:04,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:04,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 09:54:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:04,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:04,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:04,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:54:04,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:04,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:54:04,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-13 09:54:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:04,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:04,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-13 09:54:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:04,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:04,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:04,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 09:54:04,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:04,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:54:04,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:04,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:04,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-13 09:54:04,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:04,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:04,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2020-10-13 09:54:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:04,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:04,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:04,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:54:04,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:04,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 09:54:04,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:04,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:04,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-13 09:54:04,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:04,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:05,229 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 76 proven. 236 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2020-10-13 09:54:05,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497708427] [2020-10-13 09:54:05,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:54:05,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:54:05,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059079511] [2020-10-13 09:54:05,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:54:05,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:54:05,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:54:05,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:54:05,232 INFO L87 Difference]: Start difference. First operand 36344 states and 41688 transitions. Second operand 7 states. [2020-10-13 09:54:14,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:54:14,062 INFO L93 Difference]: Finished difference Result 94805 states and 110701 transitions. [2020-10-13 09:54:14,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:54:14,063 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 474 [2020-10-13 09:54:14,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:54:14,229 INFO L225 Difference]: With dead ends: 94805 [2020-10-13 09:54:14,229 INFO L226 Difference]: Without dead ends: 58471 [2020-10-13 09:54:14,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:54:14,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58471 states. [2020-10-13 09:54:15,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58471 to 57025. [2020-10-13 09:54:15,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57025 states. [2020-10-13 09:54:15,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57025 states to 57025 states and 64367 transitions. [2020-10-13 09:54:15,542 INFO L78 Accepts]: Start accepts. Automaton has 57025 states and 64367 transitions. Word has length 474 [2020-10-13 09:54:15,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:54:15,543 INFO L479 AbstractCegarLoop]: Abstraction has 57025 states and 64367 transitions. [2020-10-13 09:54:15,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:54:15,543 INFO L276 IsEmpty]: Start isEmpty. Operand 57025 states and 64367 transitions. [2020-10-13 09:54:15,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2020-10-13 09:54:15,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:54:15,595 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:54:15,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:54:15,595 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:54:15,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:54:15,596 INFO L82 PathProgramCache]: Analyzing trace with hash 629299905, now seen corresponding path program 1 times [2020-10-13 09:54:15,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:54:15,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728855547] [2020-10-13 09:54:15,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:54:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:15,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:15,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:16,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:20,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:20,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 801 [2020-10-13 09:54:20,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:54:20,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 09:54:20,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:20,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:54:20,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-13 09:54:20,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 09:54:20,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:20,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:54:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:20,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:20,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:20,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:54:20,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:20,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:54:20,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:20,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:20,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:54:20,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:20,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:54:20,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:54:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:21,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:21,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:21,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 09:54:21,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:21,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-13 09:54:21,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:21,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:54:21,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:54:21,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-13 09:54:21,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:54:21,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:54:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:21,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:21,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:21,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 09:54:21,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:21,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 09:54:21,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:21,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:54:21,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:54:21,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 09:54:21,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:54:21,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-13 09:54:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:21,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:21,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:21,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:54:21,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:21,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 09:54:21,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:21,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:54:21,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:54:21,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 09:54:21,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:54:21,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-13 09:54:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:21,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:21,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:21,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:54:21,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:21,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:54:21,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:21,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:21,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-13 09:54:21,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:21,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:54:21,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2020-10-13 09:54:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:21,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:21,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:21,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 09:54:21,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:21,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 09:54:21,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:21,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:21,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-13 09:54:21,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:21,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:21,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2020-10-13 09:54:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:21,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:21,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:21,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:54:21,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:21,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 09:54:21,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:21,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:21,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-13 09:54:21,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:21,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:22,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 194 proven. 244 refuted. 0 times theorem prover too weak. 635 trivial. 0 not checked. [2020-10-13 09:54:22,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728855547] [2020-10-13 09:54:22,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:54:22,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:54:22,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799646012] [2020-10-13 09:54:22,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:54:22,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:54:22,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:54:22,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:54:22,565 INFO L87 Difference]: Start difference. First operand 57025 states and 64367 transitions. Second operand 7 states. [2020-10-13 09:54:37,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:54:37,392 INFO L93 Difference]: Finished difference Result 141670 states and 162389 transitions. [2020-10-13 09:54:37,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:54:37,393 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 781 [2020-10-13 09:54:37,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:54:37,637 INFO L225 Difference]: With dead ends: 141670 [2020-10-13 09:54:37,638 INFO L226 Difference]: Without dead ends: 84655 [2020-10-13 09:54:37,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:54:37,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84655 states. [2020-10-13 09:54:38,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84655 to 84641. [2020-10-13 09:54:38,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84641 states. [2020-10-13 09:54:38,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84641 states to 84641 states and 95641 transitions. [2020-10-13 09:54:38,836 INFO L78 Accepts]: Start accepts. Automaton has 84641 states and 95641 transitions. Word has length 781 [2020-10-13 09:54:38,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:54:38,837 INFO L479 AbstractCegarLoop]: Abstraction has 84641 states and 95641 transitions. [2020-10-13 09:54:38,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:54:38,838 INFO L276 IsEmpty]: Start isEmpty. Operand 84641 states and 95641 transitions. [2020-10-13 09:54:38,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2020-10-13 09:54:38,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:54:38,866 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:54:38,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:54:38,866 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:54:38,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:54:38,867 INFO L82 PathProgramCache]: Analyzing trace with hash -846518979, now seen corresponding path program 1 times [2020-10-13 09:54:38,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:54:38,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876870796] [2020-10-13 09:54:38,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:54:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:39,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:39,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:39,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:44,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:44,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 840 [2020-10-13 09:54:44,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:54:44,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-13 09:54:44,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:44,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:54:44,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:54:44,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 09:54:44,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:44,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:54:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:44,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:44,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:44,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:54:44,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:44,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:54:44,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:44,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:54:44,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:54:44,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:54:44,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:44,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:54:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:44,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:44,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:44,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:54:44,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:44,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-13 09:54:44,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:44,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:54:44,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:54:44,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 09:54:44,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:44,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:54:44,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:44,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:44,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:44,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 390 [2020-10-13 09:54:44,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:44,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-13 09:54:44,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:44,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:44,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 387 [2020-10-13 09:54:44,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:44,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:44,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:54:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:44,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:44,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:44,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 09:54:44,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:44,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:54:44,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:44,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:44,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:54:44,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:44,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:45,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-13 09:54:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:45,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:45,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:45,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 09:54:45,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:45,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 09:54:45,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:45,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:45,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-13 09:54:45,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:45,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:45,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-10-13 09:54:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:45,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:45,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:45,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:54:45,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:45,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 09:54:45,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:45,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:45,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-13 09:54:45,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:45,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:46,766 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 76 proven. 351 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2020-10-13 09:54:46,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876870796] [2020-10-13 09:54:46,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:54:46,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:54:46,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873805218] [2020-10-13 09:54:46,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:54:46,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:54:46,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:54:46,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:54:46,769 INFO L87 Difference]: Start difference. First operand 84641 states and 95641 transitions. Second operand 7 states. [2020-10-13 09:54:55,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:54:55,213 INFO L93 Difference]: Finished difference Result 169569 states and 188708 transitions. [2020-10-13 09:54:55,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:54:55,215 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 822 [2020-10-13 09:54:55,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:54:55,366 INFO L225 Difference]: With dead ends: 169569 [2020-10-13 09:54:55,366 INFO L226 Difference]: Without dead ends: 84938 [2020-10-13 09:54:55,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:54:55,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84938 states. [2020-10-13 09:54:56,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84938 to 81420. [2020-10-13 09:54:56,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81420 states. [2020-10-13 09:54:56,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81420 states to 81420 states and 89497 transitions. [2020-10-13 09:54:56,234 INFO L78 Accepts]: Start accepts. Automaton has 81420 states and 89497 transitions. Word has length 822 [2020-10-13 09:54:56,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:54:56,235 INFO L479 AbstractCegarLoop]: Abstraction has 81420 states and 89497 transitions. [2020-10-13 09:54:56,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:54:56,235 INFO L276 IsEmpty]: Start isEmpty. Operand 81420 states and 89497 transitions. [2020-10-13 09:54:56,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 865 [2020-10-13 09:54:56,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:54:56,264 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:54:56,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:54:56,264 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:54:56,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:54:56,265 INFO L82 PathProgramCache]: Analyzing trace with hash 924092998, now seen corresponding path program 1 times [2020-10-13 09:54:56,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:54:56,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676148408] [2020-10-13 09:54:56,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:54:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:56,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:56,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:56,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:56,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:01,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:01,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 886 [2020-10-13 09:55:01,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:55:01,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 09:55:01,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:01,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:55:01,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-10-13 09:55:01,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 09:55:01,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:01,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:55:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:01,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:01,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:01,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:55:01,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:55:01,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:55:01,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:55:01,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:55:01,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:55:01,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:01,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:55:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:01,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:01,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:01,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-13 09:55:01,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:55:01,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 09:55:01,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:01,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:55:01,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:55:01,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-13 09:55:01,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:01,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:55:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:01,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:01,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:01,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 09:55:01,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:55:01,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:55:01,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:01,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:55:01,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:55:01,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 09:55:01,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:01,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-13 09:55:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:01,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:01,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:01,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:55:01,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:55:01,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:55:01,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:01,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:55:01,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:55:01,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:55:01,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:01,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-10-13 09:55:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:01,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:01,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:01,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:55:01,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:55:01,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:55:01,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:01,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:55:01,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 09:55:01,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:55:01,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:01,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-10-13 09:55:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:01,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:01,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:01,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:55:01,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:55:01,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:55:01,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:01,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:55:01,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-13 09:55:01,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:55:01,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:01,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2020-10-13 09:55:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:01,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:02,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:02,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 09:55:02,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:55:02,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:55:02,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:02,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:55:02,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-13 09:55:02,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:55:02,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:02,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 696 [2020-10-13 09:55:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:02,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:02,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:02,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:55:02,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:55:02,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 09:55:02,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:02,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:55:02,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-13 09:55:02,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:55:02,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:02,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1467 backedges. 203 proven. 289 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-13 09:55:02,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676148408] [2020-10-13 09:55:02,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:55:02,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:55:02,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658878883] [2020-10-13 09:55:02,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:55:02,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:55:02,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:55:02,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:55:02,790 INFO L87 Difference]: Start difference. First operand 81420 states and 89497 transitions. Second operand 7 states.