/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/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:43:27,397 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:43:27,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:43:27,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:43:27,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:43:27,425 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:43:27,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:43:27,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:43:27,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:43:27,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:43:27,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:43:27,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:43:27,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:43:27,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:43:27,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:43:27,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:43:27,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:43:27,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:43:27,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:43:27,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:43:27,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:43:27,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:43:27,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:43:27,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:43:27,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:43:27,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:43:27,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:43:27,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:43:27,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:43:27,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:43:27,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:43:27,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:43:27,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:43:27,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:43:27,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:43:27,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:43:27,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:43:27,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:43:27,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:43:27,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:43:27,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:43:27,479 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 14:43:27,522 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:43:27,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:43:27,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:43:27,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:43:27,524 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:43:27,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:43:27,524 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:43:27,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:43:27,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:43:27,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:43:27,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:43:27,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:43:27,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:43:27,527 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:43:27,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:43:27,527 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:43:27,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:43:27,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:43:27,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:43:27,528 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:43:27,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:43:27,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:43:27,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:43:27,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:43:27,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:43:27,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:43:27,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:43:27,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:43:27,530 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:43:27,530 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 14:43:27,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:43:27,851 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:43:27,855 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:43:27,856 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:43:27,857 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:43:27,857 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-13 14:43:27,938 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad3905cb6/df567b0b867447caa94f47eaa7eb8250/FLAGd1e76f7ab [2020-10-13 14:43:28,653 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:43:28,654 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-13 14:43:28,685 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad3905cb6/df567b0b867447caa94f47eaa7eb8250/FLAGd1e76f7ab [2020-10-13 14:43:28,772 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad3905cb6/df567b0b867447caa94f47eaa7eb8250 [2020-10-13 14:43:28,782 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:43:28,784 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:43:28,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:43:28,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:43:28,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:43:28,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:43:28" (1/1) ... [2020-10-13 14:43:28,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e4ff61e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:43:28, skipping insertion in model container [2020-10-13 14:43:28,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:43:28" (1/1) ... [2020-10-13 14:43:28,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:43:28,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:43:30,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:43:30,231 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:43:31,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:43:31,274 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:43:31,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:43:31 WrapperNode [2020-10-13 14:43:31,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:43:31,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:43:31,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:43:31,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:43:31,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:43:31" (1/1) ... [2020-10-13 14:43:31,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:43:31" (1/1) ... [2020-10-13 14:43:31,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:43:31" (1/1) ... [2020-10-13 14:43:31,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:43:31" (1/1) ... [2020-10-13 14:43:31,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:43:31" (1/1) ... [2020-10-13 14:43:31,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:43:31" (1/1) ... [2020-10-13 14:43:31,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:43:31" (1/1) ... [2020-10-13 14:43:31,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:43:31,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:43:31,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:43:31,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:43:31,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:43:31" (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 14:43:31,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:43:31,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:43:31,624 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:43:31,624 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:43:31,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:43:31,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:43:31,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:43:31,626 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:43:31,626 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:43:31,626 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:43:31,627 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:43:31,627 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:43:31,627 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:43:31,627 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:43:31,627 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:43:31,628 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:43:31,629 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:43:31,629 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:43:31,629 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:43:31,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:43:31,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:43:35,378 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:43:35,379 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:43:35,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:43:35 BoogieIcfgContainer [2020-10-13 14:43:35,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:43:35,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:43:35,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:43:35,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:43:35,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:43:28" (1/3) ... [2020-10-13 14:43:35,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@200bbfd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:43:35, skipping insertion in model container [2020-10-13 14:43:35,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:43:31" (2/3) ... [2020-10-13 14:43:35,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@200bbfd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:43:35, skipping insertion in model container [2020-10-13 14:43:35,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:43:35" (3/3) ... [2020-10-13 14:43:35,399 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-13 14:43:35,409 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:43:35,418 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-13 14:43:35,432 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-13 14:43:35,460 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:43:35,460 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:43:35,460 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:43:35,461 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:43:35,461 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:43:35,461 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:43:35,461 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:43:35,461 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:43:35,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states. [2020-10-13 14:43:35,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 14:43:35,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:43:35,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:35,521 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:43:35,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:43:35,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1316397812, now seen corresponding path program 1 times [2020-10-13 14:43:35,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:43:35,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351521325] [2020-10-13 14:43:35,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:43:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:43:36,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:43:36,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:43:36,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:43:37,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:43:37,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:43:37,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:43:38,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:43:38,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:43:41,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:43:41,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 14:43:41,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:43:41,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 14:43:41,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:43:41,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:43:41,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 14:43:41,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:43:41,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 14:43:43,515 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-13 14:43:43,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:43:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:43:43,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:43:43,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:43:43,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:43:43,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:43:43,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 14:43:43,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:43:43,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:43:43,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:43:43,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:43:43,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:43:43,628 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 14:43:43,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351521325] [2020-10-13 14:43:43,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:43:43,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:43:43,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984163422] [2020-10-13 14:43:43,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:43:43,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:43:43,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:43:43,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:43:43,655 INFO L87 Difference]: Start difference. First operand 1111 states. Second operand 7 states. [2020-10-13 14:43:45,991 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 620 [2020-10-13 14:43:58,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:43:58,648 INFO L93 Difference]: Finished difference Result 3229 states and 5712 transitions. [2020-10-13 14:43:58,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:43:58,650 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-10-13 14:43:58,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:43:58,683 INFO L225 Difference]: With dead ends: 3229 [2020-10-13 14:43:58,686 INFO L226 Difference]: Without dead ends: 2120 [2020-10-13 14:43:58,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:43:58,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2120 states. [2020-10-13 14:43:58,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2120 to 1835. [2020-10-13 14:43:58,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1835 states. [2020-10-13 14:43:58,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1835 states to 1835 states and 2550 transitions. [2020-10-13 14:43:58,856 INFO L78 Accepts]: Start accepts. Automaton has 1835 states and 2550 transitions. Word has length 68 [2020-10-13 14:43:58,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:43:58,857 INFO L479 AbstractCegarLoop]: Abstraction has 1835 states and 2550 transitions. [2020-10-13 14:43:58,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:43:58,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1835 states and 2550 transitions. [2020-10-13 14:43:58,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 14:43:58,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:43:58,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:58,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:43:58,864 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:43:58,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:43:58,864 INFO L82 PathProgramCache]: Analyzing trace with hash 953481631, now seen corresponding path program 1 times [2020-10-13 14:43:58,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:43:58,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697779214] [2020-10-13 14:43:58,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:43:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:43:58,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:43:59,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:43:59,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:43:59,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:01,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:02,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:02,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:03,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:03,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:44:03,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 14:44:03,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:44:03,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 14:44:03,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:44:03,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:44:03,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 14:44:03,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 14:44:03,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:44:06,315 WARN L193 SmtUtils]: Spent 2.26 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-13 14:44:06,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:44:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:44:06,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:06,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:44:06,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:44:06,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:44:06,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 14:44:06,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:44:06,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:44:06,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:44:06,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:44:06,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:44:06,419 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 14:44:06,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697779214] [2020-10-13 14:44:06,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:44:06,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:44:06,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896603976] [2020-10-13 14:44:06,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:44:06,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:44:06,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:44:06,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:44:06,423 INFO L87 Difference]: Start difference. First operand 1835 states and 2550 transitions. Second operand 4 states. [2020-10-13 14:44:08,534 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 620 [2020-10-13 14:44:16,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:44:16,502 INFO L93 Difference]: Finished difference Result 3589 states and 5195 transitions. [2020-10-13 14:44:16,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:44:16,503 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-10-13 14:44:16,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:44:16,517 INFO L225 Difference]: With dead ends: 3589 [2020-10-13 14:44:16,517 INFO L226 Difference]: Without dead ends: 2558 [2020-10-13 14:44:16,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:44:16,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2020-10-13 14:44:16,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 2542. [2020-10-13 14:44:16,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2542 states. [2020-10-13 14:44:16,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2542 states to 2542 states and 3604 transitions. [2020-10-13 14:44:16,618 INFO L78 Accepts]: Start accepts. Automaton has 2542 states and 3604 transitions. Word has length 69 [2020-10-13 14:44:16,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:44:16,620 INFO L479 AbstractCegarLoop]: Abstraction has 2542 states and 3604 transitions. [2020-10-13 14:44:16,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:44:16,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2542 states and 3604 transitions. [2020-10-13 14:44:16,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 14:44:16,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:44:16,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:16,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:44:16,628 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:44:16,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:44:16,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1115394027, now seen corresponding path program 1 times [2020-10-13 14:44:16,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:44:16,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329482000] [2020-10-13 14:44:16,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:44:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:44:16,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:16,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:17,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:18,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:18,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:19,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:19,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:20,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:21,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:44:21,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 14:44:21,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:44:21,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:44:21,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:44:21,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:44:21,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 14:44:21,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 14:44:21,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:44:24,117 WARN L193 SmtUtils]: Spent 2.27 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-13 14:44:24,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:44:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:44:24,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:24,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:44:24,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:44:24,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:44:24,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 14:44:24,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:44:24,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:44:24,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:44:24,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:44:24,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:44:24,192 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 14:44:24,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329482000] [2020-10-13 14:44:24,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:44:24,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:44:24,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550467910] [2020-10-13 14:44:24,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:44:24,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:44:24,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:44:24,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:44:24,195 INFO L87 Difference]: Start difference. First operand 2542 states and 3604 transitions. Second operand 4 states. [2020-10-13 14:44:26,467 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification that was a NOOP. DAG size: 620 [2020-10-13 14:44:34,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:44:34,062 INFO L93 Difference]: Finished difference Result 5292 states and 7684 transitions. [2020-10-13 14:44:34,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:44:34,068 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-10-13 14:44:34,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:44:34,087 INFO L225 Difference]: With dead ends: 5292 [2020-10-13 14:44:34,088 INFO L226 Difference]: Without dead ends: 3921 [2020-10-13 14:44:34,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:44:34,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3921 states. [2020-10-13 14:44:34,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3921 to 3913. [2020-10-13 14:44:34,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3913 states. [2020-10-13 14:44:34,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3913 states to 3913 states and 5572 transitions. [2020-10-13 14:44:34,240 INFO L78 Accepts]: Start accepts. Automaton has 3913 states and 5572 transitions. Word has length 69 [2020-10-13 14:44:34,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:44:34,241 INFO L479 AbstractCegarLoop]: Abstraction has 3913 states and 5572 transitions. [2020-10-13 14:44:34,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:44:34,241 INFO L276 IsEmpty]: Start isEmpty. Operand 3913 states and 5572 transitions. [2020-10-13 14:44:34,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 14:44:34,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:44:34,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:34,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:44:34,255 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:44:34,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:44:34,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1386895488, now seen corresponding path program 1 times [2020-10-13 14:44:34,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:44:34,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149962784] [2020-10-13 14:44:34,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:44:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:44:34,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:34,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:34,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:34,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:36,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:36,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:38,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:38,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:39,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:44:39,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 14:44:39,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:44:39,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 14:44:39,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:44:39,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:44:39,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 14:44:39,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 14:44:39,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:44:41,419 WARN L193 SmtUtils]: Spent 2.00 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-13 14:44:41,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:44:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:44:41,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:41,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:44:41,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:44:41,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:44:41,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 14:44:41,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:44:41,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:44:41,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:44:41,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:44:41,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:44:41,488 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 14:44:41,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149962784] [2020-10-13 14:44:41,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:44:41,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:44:41,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444882755] [2020-10-13 14:44:41,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:44:41,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:44:41,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:44:41,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:44:41,491 INFO L87 Difference]: Start difference. First operand 3913 states and 5572 transitions. Second operand 4 states. [2020-10-13 14:44:43,609 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 620 [2020-10-13 14:44:50,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:44:50,667 INFO L93 Difference]: Finished difference Result 9011 states and 13025 transitions. [2020-10-13 14:44:50,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:44:50,668 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-10-13 14:44:50,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:44:50,697 INFO L225 Difference]: With dead ends: 9011 [2020-10-13 14:44:50,697 INFO L226 Difference]: Without dead ends: 6220 [2020-10-13 14:44:50,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:44:50,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6220 states. [2020-10-13 14:44:50,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6220 to 6212. [2020-10-13 14:44:50,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6212 states. [2020-10-13 14:44:50,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 8822 transitions. [2020-10-13 14:44:50,916 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 8822 transitions. Word has length 69 [2020-10-13 14:44:50,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:44:50,918 INFO L479 AbstractCegarLoop]: Abstraction has 6212 states and 8822 transitions. [2020-10-13 14:44:50,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:44:50,918 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 8822 transitions. [2020-10-13 14:44:50,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 14:44:50,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:44:50,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:50,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:44:50,929 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:44:50,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:44:50,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1149018834, now seen corresponding path program 1 times [2020-10-13 14:44:50,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:44:50,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385256726] [2020-10-13 14:44:50,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:44:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:44:51,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:51,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:51,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:51,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:51,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:51,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:52,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:52,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:53,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:53,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:53,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:55,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:44:55,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 14:44:55,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:44:55,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 14:44:55,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:44:55,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:44:55,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 14:44:55,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 14:44:55,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:44:58,223 WARN L193 SmtUtils]: Spent 1.99 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-13 14:44:58,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:44:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:44:58,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:58,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:44:58,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:44:58,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:44:58,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 14:44:58,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:44:58,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:44:58,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:44:58,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:44:58,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:44:58,316 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 14:44:58,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385256726] [2020-10-13 14:44:58,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:44:58,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:44:58,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434649191] [2020-10-13 14:44:58,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:44:58,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:44:58,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:44:58,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:44:58,319 INFO L87 Difference]: Start difference. First operand 6212 states and 8822 transitions. Second operand 9 states. [2020-10-13 14:45:00,556 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 636 [2020-10-13 14:45:14,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:45:14,419 INFO L93 Difference]: Finished difference Result 27310 states and 39320 transitions. [2020-10-13 14:45:14,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:45:14,419 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-10-13 14:45:14,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:45:14,504 INFO L225 Difference]: With dead ends: 27310 [2020-10-13 14:45:14,504 INFO L226 Difference]: Without dead ends: 23748 [2020-10-13 14:45:14,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2020-10-13 14:45:14,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23748 states. [2020-10-13 14:45:14,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23748 to 6348. [2020-10-13 14:45:14,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6348 states. [2020-10-13 14:45:14,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6348 states to 6348 states and 8970 transitions. [2020-10-13 14:45:14,999 INFO L78 Accepts]: Start accepts. Automaton has 6348 states and 8970 transitions. Word has length 69 [2020-10-13 14:45:15,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:45:15,000 INFO L479 AbstractCegarLoop]: Abstraction has 6348 states and 8970 transitions. [2020-10-13 14:45:15,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:45:15,000 INFO L276 IsEmpty]: Start isEmpty. Operand 6348 states and 8970 transitions. [2020-10-13 14:45:15,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 14:45:15,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:45:15,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:45:15,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:45:15,011 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:45:15,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:45:15,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1994883108, now seen corresponding path program 1 times [2020-10-13 14:45:15,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:45:15,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544283300] [2020-10-13 14:45:15,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:45:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:45:15,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:15,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:15,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:15,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:16,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:16,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:16,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:17,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:18,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:18,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:20,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:45:20,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 14:45:20,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:45:20,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 14:45:20,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:45:20,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:45:20,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 14:45:20,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 14:45:20,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:45:22,252 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-13 14:45:22,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:45:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:45:22,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:22,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:45:22,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:45:22,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:45:22,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 14:45:22,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:45:22,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:45:22,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:45:22,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:45:22,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:45:22,322 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 14:45:22,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544283300] [2020-10-13 14:45:22,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:45:22,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:45:22,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256347270] [2020-10-13 14:45:22,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:45:22,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:45:22,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:45:22,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:45:22,325 INFO L87 Difference]: Start difference. First operand 6348 states and 8970 transitions. Second operand 7 states. [2020-10-13 14:45:24,490 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 620 [2020-10-13 14:45:33,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:45:33,214 INFO L93 Difference]: Finished difference Result 40330 states and 58442 transitions. [2020-10-13 14:45:33,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:45:33,214 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-10-13 14:45:33,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:45:33,311 INFO L225 Difference]: With dead ends: 40330 [2020-10-13 14:45:33,311 INFO L226 Difference]: Without dead ends: 34470 [2020-10-13 14:45:33,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:45:33,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34470 states. [2020-10-13 14:45:34,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34470 to 25749. [2020-10-13 14:45:34,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25749 states. [2020-10-13 14:45:34,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25749 states to 25749 states and 37018 transitions. [2020-10-13 14:45:34,630 INFO L78 Accepts]: Start accepts. Automaton has 25749 states and 37018 transitions. Word has length 69 [2020-10-13 14:45:34,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:45:34,630 INFO L479 AbstractCegarLoop]: Abstraction has 25749 states and 37018 transitions. [2020-10-13 14:45:34,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:45:34,631 INFO L276 IsEmpty]: Start isEmpty. Operand 25749 states and 37018 transitions. [2020-10-13 14:45:34,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 14:45:34,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:45:34,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:45:34,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:45:34,651 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:45:34,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:45:34,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1733657777, now seen corresponding path program 1 times [2020-10-13 14:45:34,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:45:34,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258467405] [2020-10-13 14:45:34,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:45:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:45:34,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:34,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:34,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:34,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:35,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:35,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:37,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:37,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:38,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:38,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:39,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:39,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:39,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:45:39,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 14:45:39,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:45:39,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:45:39,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:45:39,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:45:39,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 14:45:39,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 14:45:39,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:45:41,759 WARN L193 SmtUtils]: Spent 1.99 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-13 14:45:41,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:45:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:45:41,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:41,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:45:41,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:45:41,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:45:41,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 14:45:41,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:45:41,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:45:41,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:45:41,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:45:41,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:45:41,823 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 14:45:41,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258467405] [2020-10-13 14:45:41,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:45:41,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:45:41,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244215981] [2020-10-13 14:45:41,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:45:41,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:45:41,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:45:41,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:45:41,825 INFO L87 Difference]: Start difference. First operand 25749 states and 37018 transitions. Second operand 4 states. [2020-10-13 14:45:43,952 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 620 [2020-10-13 14:45:51,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:45:51,155 INFO L93 Difference]: Finished difference Result 70223 states and 101031 transitions. [2020-10-13 14:45:51,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:45:51,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-10-13 14:45:51,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:45:51,263 INFO L225 Difference]: With dead ends: 70223 [2020-10-13 14:45:51,263 INFO L226 Difference]: Without dead ends: 45820 [2020-10-13 14:45:51,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:45:51,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45820 states. [2020-10-13 14:45:53,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45820 to 44426. [2020-10-13 14:45:53,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44426 states. [2020-10-13 14:45:53,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44426 states to 44426 states and 63190 transitions. [2020-10-13 14:45:53,533 INFO L78 Accepts]: Start accepts. Automaton has 44426 states and 63190 transitions. Word has length 69 [2020-10-13 14:45:53,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:45:53,534 INFO L479 AbstractCegarLoop]: Abstraction has 44426 states and 63190 transitions. [2020-10-13 14:45:53,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:45:53,534 INFO L276 IsEmpty]: Start isEmpty. Operand 44426 states and 63190 transitions. [2020-10-13 14:45:53,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 14:45:53,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:45:53,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:45:53,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:45:53,554 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:45:53,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:45:53,554 INFO L82 PathProgramCache]: Analyzing trace with hash 778837593, now seen corresponding path program 1 times [2020-10-13 14:45:53,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:45:53,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332440579] [2020-10-13 14:45:53,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:45:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:45:53,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:53,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:53,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:54,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:54,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:54,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:55,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:56,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:56,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:57,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:57,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:58,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:58,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:45:58,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 14:45:58,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:45:58,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:45:58,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:45:58,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:45:58,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 14:45:58,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 14:45:58,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:46:00,596 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-13 14:46:00,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:46:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:46:00,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:00,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:46:00,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:46:00,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:46:00,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 14:46:00,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:46:00,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:46:00,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:46:00,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:46:00,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:46:00,644 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 14:46:00,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332440579] [2020-10-13 14:46:00,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:46:00,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:46:00,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722043923] [2020-10-13 14:46:00,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:46:00,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:46:00,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:46:00,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:46:00,647 INFO L87 Difference]: Start difference. First operand 44426 states and 63190 transitions. Second operand 6 states. [2020-10-13 14:46:15,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:46:15,922 INFO L93 Difference]: Finished difference Result 229527 states and 330140 transitions. [2020-10-13 14:46:15,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:46:15,922 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-13 14:46:15,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:46:16,205 INFO L225 Difference]: With dead ends: 229527 [2020-10-13 14:46:16,206 INFO L226 Difference]: Without dead ends: 192526 [2020-10-13 14:46:16,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:46:16,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192526 states. [2020-10-13 14:46:22,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192526 to 43311. [2020-10-13 14:46:22,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43311 states. [2020-10-13 14:46:22,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43311 states to 43311 states and 61271 transitions. [2020-10-13 14:46:22,241 INFO L78 Accepts]: Start accepts. Automaton has 43311 states and 61271 transitions. Word has length 69 [2020-10-13 14:46:22,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:46:22,241 INFO L479 AbstractCegarLoop]: Abstraction has 43311 states and 61271 transitions. [2020-10-13 14:46:22,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:46:22,241 INFO L276 IsEmpty]: Start isEmpty. Operand 43311 states and 61271 transitions. [2020-10-13 14:46:22,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:46:22,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:46:22,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:46:22,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:46:22,254 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:46:22,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:46:22,254 INFO L82 PathProgramCache]: Analyzing trace with hash 734621720, now seen corresponding path program 1 times [2020-10-13 14:46:22,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:46:22,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523750022] [2020-10-13 14:46:22,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:46:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:46:22,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:22,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:22,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:22,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:23,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:23,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:23,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:24,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:24,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:24,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:26,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:27,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:27,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:46:27,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:46:27,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:46:27,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:46:27,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:46:27,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:46:27,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 14:46:27,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 14:46:27,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:46:29,344 WARN L193 SmtUtils]: Spent 1.98 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-13 14:46:29,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:46:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:46:29,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:29,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:46:29,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:46:29,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:46:29,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 14:46:29,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:46:29,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:46:29,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:46:29,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:46:29,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:46:29,405 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 14:46:29,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523750022] [2020-10-13 14:46:29,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:46:29,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:46:29,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789832348] [2020-10-13 14:46:29,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:46:29,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:46:29,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:46:29,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:46:29,407 INFO L87 Difference]: Start difference. First operand 43311 states and 61271 transitions. Second operand 6 states. [2020-10-13 14:46:44,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:46:44,027 INFO L93 Difference]: Finished difference Result 153993 states and 217389 transitions. [2020-10-13 14:46:44,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:46:44,028 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-13 14:46:44,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:46:44,192 INFO L225 Difference]: With dead ends: 153993 [2020-10-13 14:46:44,192 INFO L226 Difference]: Without dead ends: 133982 [2020-10-13 14:46:44,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:46:44,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133982 states. [2020-10-13 14:46:47,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133982 to 41681. [2020-10-13 14:46:47,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41681 states. [2020-10-13 14:46:47,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41681 states to 41681 states and 59144 transitions. [2020-10-13 14:46:47,259 INFO L78 Accepts]: Start accepts. Automaton has 41681 states and 59144 transitions. Word has length 70 [2020-10-13 14:46:47,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:46:47,260 INFO L479 AbstractCegarLoop]: Abstraction has 41681 states and 59144 transitions. [2020-10-13 14:46:47,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:46:47,260 INFO L276 IsEmpty]: Start isEmpty. Operand 41681 states and 59144 transitions. [2020-10-13 14:46:47,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:46:47,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:46:47,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:46:47,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:46:47,271 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:46:47,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:46:47,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1529791141, now seen corresponding path program 1 times [2020-10-13 14:46:47,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:46:47,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928932498] [2020-10-13 14:46:47,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:46:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:46:47,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:47,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:47,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:47,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:47,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:49,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:50,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:50,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:50,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:51,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:51,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:52,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:46:52,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:46:52,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:46:52,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5569 [2020-10-13 14:46:52,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:46:52,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:46:52,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 14:46:52,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 14:46:52,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:46:54,869 WARN L193 SmtUtils]: Spent 1.90 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-13 14:46:54,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:46:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:46:54,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:54,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:46:54,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:46:54,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:46:54,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 14:46:54,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:46:54,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:46:54,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:46:54,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:46:54,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:46:54,917 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 14:46:54,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928932498] [2020-10-13 14:46:54,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:46:54,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:46:54,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691862205] [2020-10-13 14:46:54,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:46:54,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:46:54,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:46:54,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:46:54,919 INFO L87 Difference]: Start difference. First operand 41681 states and 59144 transitions. Second operand 7 states. [2020-10-13 14:46:56,994 WARN L193 SmtUtils]: Spent 1.98 s on a formula simplification that was a NOOP. DAG size: 620